Mergehs25-b52

52 files changed, 1207 insertions, 669 deletions

diff --git a/agent/src/os/linux/ps_core.c b/agent/src/os/linux/ps_core.c
index 85abab802..c16204078 100644
--- a/agent/src/os/linux/ps_core.c
+++ b/agent/src/os/linux/ps_core.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -698,29 +698,58 @@ err:
 
 // read segments of a shared object
 static bool read_lib_segments(struct ps_prochandle* ph, int lib_fd, ELF_EHDR* lib_ehdr, uintptr_t lib_base) {
-   int i = 0;
-   ELF_PHDR* phbuf;
-   ELF_PHDR* lib_php = NULL;
+  int i = 0;
+  ELF_PHDR* phbuf;
+  ELF_PHDR* lib_php = NULL;
 
-   if ((phbuf = read_program_header_table(lib_fd, lib_ehdr)) == NULL)
-      return false;
+  int page_size=sysconf(_SC_PAGE_SIZE);
+
+  if ((phbuf = read_program_header_table(lib_fd, lib_ehdr)) == NULL) {
+    return false;
+  }
 
-   // we want to process only PT_LOAD segments that are not writable.
-   // i.e., text segments. The read/write/exec (data) segments would
-   // have been already added from core file segments.
-   for (lib_php = phbuf, i = 0; i < lib_ehdr->e_phnum; i++) {
-      if ((lib_php->p_type == PT_LOAD) && !(lib_php->p_flags & PF_W) && (lib_php->p_filesz != 0)) {
-         if (add_map_info(ph, lib_fd, lib_php->p_offset, lib_php->p_vaddr + lib_base, lib_php->p_filesz) == NULL)
-            goto err;
+  // we want to process only PT_LOAD segments that are not writable.
+  // i.e., text segments. The read/write/exec (data) segments would
+  // have been already added from core file segments.
+  for (lib_php = phbuf, i = 0; i < lib_ehdr->e_phnum; i++) {
+    if ((lib_php->p_type == PT_LOAD) && !(lib_php->p_flags & PF_W) && (lib_php->p_filesz != 0)) {
+
+      uintptr_t target_vaddr = lib_php->p_vaddr + lib_base;
+      map_info *existing_map = core_lookup(ph, target_vaddr);
+
+      if (existing_map == NULL){
+        if (add_map_info(ph, lib_fd, lib_php->p_offset,
+                          target_vaddr, lib_php->p_filesz) == NULL) {
+          goto err;
+        }
+      } else {
+        if ((existing_map->memsz != page_size) &&
+            (existing_map->fd != lib_fd) &&
+            (existing_map->memsz != lib_php->p_filesz)){
+
+          print_debug("address conflict @ 0x%lx (size = %ld, flags = %d\n)",
+                        target_vaddr, lib_php->p_filesz, lib_php->p_flags);
+          goto err;
+        }
+
+        /* replace PT_LOAD segment with library segment */
+        print_debug("overwrote with new address mapping (memsz %ld -> %ld)\n",
+                     existing_map->memsz, lib_php->p_filesz);
+
+        existing_map->fd = lib_fd;
+        existing_map->offset = lib_php->p_offset;
+        existing_map->memsz = lib_php->p_filesz;
       }
-      lib_php++;
-   }
+    }
 
-   free(phbuf);
-   return true;
+    lib_php++;
+  }
+
+  free(phbuf);
+  return true;
 err:
-   free(phbuf);
-   return false;
+  free(phbuf);
+  return false;
 }
 
 // process segments from interpreter (ld.so or ld-linux.so)
diff --git a/make/excludeSrc.make b/make/excludeSrc.make
index c3a9b4dea..a95dc1b11 100644
--- a/make/excludeSrc.make
+++ b/make/excludeSrc.make
@@ -88,7 +88,7 @@ ifeq ($(INCLUDE_ALL_GCS), false)
 	g1ErgoVerbose.cpp g1GCPhaseTimes.cpp g1HRPrinter.cpp g1HotCardCache.cpp g1Log.cpp \
 	g1MMUTracker.cpp g1MarkSweep.cpp g1MemoryPool.cpp g1MonitoringSupport.cpp \
 	g1RemSet.cpp g1RemSetSummary.cpp g1SATBCardTableModRefBS.cpp g1_globals.cpp heapRegion.cpp \
-	heapRegionRemSet.cpp heapRegionSeq.cpp heapRegionSet.cpp heapRegionSets.cpp \
+	g1BiasedArray.cpp heapRegionRemSet.cpp heapRegionSeq.cpp heapRegionSet.cpp heapRegionSets.cpp \
 	ptrQueue.cpp satbQueue.cpp sparsePRT.cpp survRateGroup.cpp vm_operations_g1.cpp \
 	adjoiningGenerations.cpp adjoiningVirtualSpaces.cpp asPSOldGen.cpp asPSYoungGen.cpp \
 	cardTableExtension.cpp gcTaskManager.cpp gcTaskThread.cpp objectStartArray.cpp \
diff --git a/make/hotspot_version b/make/hotspot_version
index fa4d6554e..dc0872c1d 100644
--- a/make/hotspot_version
+++ b/make/hotspot_version
@@ -35,7 +35,7 @@ HOTSPOT_VM_COPYRIGHT=Copyright 2013
 
 HS_MAJOR_VER=25
 HS_MINOR_VER=0
-HS_BUILD_NUMBER=51
+HS_BUILD_NUMBER=52
 
 JDK_MAJOR_VER=1
 JDK_MINOR_VER=8
diff --git a/src/cpu/sparc/vm/vtableStubs_sparc.cpp b/src/cpu/sparc/vm/vtableStubs_sparc.cpp
index ce19d4d7e..cdbb57fbe 100644
--- a/src/cpu/sparc/vm/vtableStubs_sparc.cpp
+++ b/src/cpu/sparc/vm/vtableStubs_sparc.cpp
@@ -52,6 +52,11 @@ extern "C" void bad_compiled_vtable_index(JavaThread* thread, oopDesc* receiver,
 VtableStub* VtableStubs::create_vtable_stub(int vtable_index) {
   const int sparc_code_length = VtableStub::pd_code_size_limit(true);
   VtableStub* s = new(sparc_code_length) VtableStub(true, vtable_index);
+  // Can be NULL if there is no free space in the code cache.
+  if (s == NULL) {
+    return NULL;
+  }
+
   ResourceMark rm;
   CodeBuffer cb(s->entry_point(), sparc_code_length);
   MacroAssembler* masm = new MacroAssembler(&cb);
@@ -125,6 +130,11 @@ VtableStub* VtableStubs::create_vtable_stub(int vtable_index) {
 VtableStub* VtableStubs::create_itable_stub(int itable_index) {
   const int sparc_code_length = VtableStub::pd_code_size_limit(false);
   VtableStub* s = new(sparc_code_length) VtableStub(false, itable_index);
+  // Can be NULL if there is no free space in the code cache.
+  if (s == NULL) {
+    return NULL;
+  }
+
   ResourceMark rm;
   CodeBuffer cb(s->entry_point(), sparc_code_length);
   MacroAssembler* masm = new MacroAssembler(&cb);
diff --git a/src/cpu/x86/vm/vtableStubs_x86_32.cpp b/src/cpu/x86/vm/vtableStubs_x86_32.cpp
index c470004eb..7c49d737f 100644
--- a/src/cpu/x86/vm/vtableStubs_x86_32.cpp
+++ b/src/cpu/x86/vm/vtableStubs_x86_32.cpp
@@ -58,6 +58,11 @@ extern "C" void bad_compiled_vtable_index(JavaThread* thread, oop receiver, int
 VtableStub* VtableStubs::create_vtable_stub(int vtable_index) {
   const int i486_code_length = VtableStub::pd_code_size_limit(true);
   VtableStub* s = new(i486_code_length) VtableStub(true, vtable_index);
+  // Can be NULL if there is no free space in the code cache.
+  if (s == NULL) {
+    return NULL;
+  }
+
   ResourceMark rm;
   CodeBuffer cb(s->entry_point(), i486_code_length);
   MacroAssembler* masm = new MacroAssembler(&cb);
@@ -132,6 +137,11 @@ VtableStub* VtableStubs::create_itable_stub(int itable_index) {
   //            add code here, bump the code stub size returned by pd_code_size_limit!
   const int i486_code_length = VtableStub::pd_code_size_limit(false);
   VtableStub* s = new(i486_code_length) VtableStub(false, itable_index);
+  // Can be NULL if there is no free space in the code cache.
+  if (s == NULL) {
+    return NULL;
+  }
+
   ResourceMark rm;
   CodeBuffer cb(s->entry_point(), i486_code_length);
   MacroAssembler* masm = new MacroAssembler(&cb);
diff --git a/src/cpu/x86/vm/vtableStubs_x86_64.cpp b/src/cpu/x86/vm/vtableStubs_x86_64.cpp
index 5f5f94f41..911341736 100644
--- a/src/cpu/x86/vm/vtableStubs_x86_64.cpp
+++ b/src/cpu/x86/vm/vtableStubs_x86_64.cpp
@@ -49,6 +49,11 @@ extern "C" void bad_compiled_vtable_index(JavaThread* thread,
 VtableStub* VtableStubs::create_vtable_stub(int vtable_index) {
   const int amd64_code_length = VtableStub::pd_code_size_limit(true);
   VtableStub* s = new(amd64_code_length) VtableStub(true, vtable_index);
+  // Can be NULL if there is no free space in the code cache.
+  if (s == NULL) {
+    return NULL;
+  }
+
   ResourceMark rm;
   CodeBuffer cb(s->entry_point(), amd64_code_length);
   MacroAssembler* masm = new MacroAssembler(&cb);
@@ -126,6 +131,11 @@ VtableStub* VtableStubs::create_itable_stub(int itable_index) {
   // returned by pd_code_size_limit!
   const int amd64_code_length = VtableStub::pd_code_size_limit(false);
   VtableStub* s = new(amd64_code_length) VtableStub(false, itable_index);
+  // Can be NULL if there is no free space in the code cache.
+  if (s == NULL) {
+    return NULL;
+  }
+
   ResourceMark rm;
   CodeBuffer cb(s->entry_point(), amd64_code_length);
   MacroAssembler* masm = new MacroAssembler(&cb);
diff --git a/src/share/vm/c1/c1_GraphBuilder.cpp b/src/share/vm/c1/c1_GraphBuilder.cpp
index b7ea6eebb..03d0d75fa 100644
--- a/src/share/vm/c1/c1_GraphBuilder.cpp
+++ b/src/share/vm/c1/c1_GraphBuilder.cpp
@@ -4219,7 +4219,9 @@ void GraphBuilder::print_inlining(ciMethod* callee, const char* msg, bool succes
     }
   }
 
-  if (!PrintInlining)  return;
+  if (!PrintInlining && !compilation()->method()->has_option("PrintInlining")) {
+    return;
+  }
   CompileTask::print_inlining(callee, scope()->level(), bci(), msg);
   if (success && CIPrintMethodCodes) {
     callee->print_codes();
diff --git a/src/share/vm/classfile/javaClasses.cpp b/src/share/vm/classfile/javaClasses.cpp
index 8e94d834a..9331cc124 100644
--- a/src/share/vm/classfile/javaClasses.cpp
+++ b/src/share/vm/classfile/javaClasses.cpp
@@ -438,6 +438,29 @@ bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
   return true;
 }
 
+bool java_lang_String::equals(oop str1, oop str2) {
+  assert(str1->klass() == SystemDictionary::String_klass(),
+         "must be java String");
+  assert(str2->klass() == SystemDictionary::String_klass(),
+         "must be java String");
+  typeArrayOop value1  = java_lang_String::value(str1);
+  int          offset1 = java_lang_String::offset(str1);
+  int          length1 = java_lang_String::length(str1);
+  typeArrayOop value2  = java_lang_String::value(str2);
+  int          offset2 = java_lang_String::offset(str2);
+  int          length2 = java_lang_String::length(str2);
+
+  if (length1 != length2) {
+    return false;
+  }
+  for (int i = 0; i < length1; i++) {
+    if (value1->char_at(i + offset1) != value2->char_at(i + offset2)) {
+      return false;
+    }
+  }
+  return true;
+}
+
 void java_lang_String::print(Handle java_string, outputStream* st) {
   oop          obj    = java_string();
   assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
diff --git a/src/share/vm/classfile/javaClasses.hpp b/src/share/vm/classfile/javaClasses.hpp
index 8a8e801f3..ffccf2f0e 100644
--- a/src/share/vm/classfile/javaClasses.hpp
+++ b/src/share/vm/classfile/javaClasses.hpp
@@ -182,6 +182,7 @@ class java_lang_String : AllStatic {
   static unsigned int hash_string(oop java_string);
 
   static bool equals(oop java_string, jchar* chars, int len);
+  static bool equals(oop str1, oop str2);
 
   // Conversion between '.' and '/' formats
   static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
diff --git a/src/share/vm/classfile/symbolTable.cpp b/src/share/vm/classfile/symbolTable.cpp
index c00e95817..62988c7bf 100644
--- a/src/share/vm/classfile/symbolTable.cpp
+++ b/src/share/vm/classfile/symbolTable.cpp
@@ -341,7 +341,7 @@ Symbol* SymbolTable::new_permanent_symbol(const char* name, TRAPS) {
 
 Symbol* SymbolTable::basic_add(int index_arg, u1 *name, int len,
                                unsigned int hashValue_arg, bool c_heap, TRAPS) {
-  assert(!Universe::heap()->is_in_reserved(name) || GC_locker::is_active(),
+  assert(!Universe::heap()->is_in_reserved(name),
          "proposed name of symbol must be stable");
 
   // Don't allow symbols to be created which cannot fit in a Symbol*.
@@ -685,7 +685,7 @@ oop StringTable::intern(Handle string_or_null, jchar* name,
   if (found_string != NULL) return found_string;
 
   debug_only(StableMemoryChecker smc(name, len * sizeof(name[0])));
-  assert(!Universe::heap()->is_in_reserved(name) || GC_locker::is_active(),
+  assert(!Universe::heap()->is_in_reserved(name),
          "proposed name of symbol must be stable");
 
   Handle string;
@@ -807,6 +807,8 @@ void StringTable::possibly_parallel_oops_do(OopClosure* f) {
   }
 }
 
+// This verification is part of Universe::verify() and needs to be quick.
+// See StringTable::verify_and_compare() below for exhaustive verification.
 void StringTable::verify() {
   for (int i = 0; i < the_table()->table_size(); ++i) {
     HashtableEntry<oop, mtSymbol>* p = the_table()->bucket(i);
@@ -825,6 +827,162 @@ void StringTable::dump(outputStream* st) {
   the_table()->dump_table(st, "StringTable");
 }
 
+StringTable::VerifyRetTypes StringTable::compare_entries(
+                                      int bkt1, int e_cnt1,
+                                      HashtableEntry<oop, mtSymbol>* e_ptr1,
+                                      int bkt2, int e_cnt2,
+                                      HashtableEntry<oop, mtSymbol>* e_ptr2) {
+  // These entries are sanity checked by verify_and_compare_entries()
+  // before this function is called.
+  oop str1 = e_ptr1->literal();
+  oop str2 = e_ptr2->literal();
+
+  if (str1 == str2) {
+    tty->print_cr("ERROR: identical oop values (0x" PTR_FORMAT ") "
+                  "in entry @ bucket[%d][%d] and entry @ bucket[%d][%d]",
+                  str1, bkt1, e_cnt1, bkt2, e_cnt2);
+    return _verify_fail_continue;
+  }
+
+  if (java_lang_String::equals(str1, str2)) {
+    tty->print_cr("ERROR: identical String values in entry @ "
+                  "bucket[%d][%d] and entry @ bucket[%d][%d]",
+                  bkt1, e_cnt1, bkt2, e_cnt2);
+    return _verify_fail_continue;
+  }
+
+  return _verify_pass;
+}
+
+StringTable::VerifyRetTypes StringTable::verify_entry(int bkt, int e_cnt,
+                                      HashtableEntry<oop, mtSymbol>* e_ptr,
+                                      StringTable::VerifyMesgModes mesg_mode) {
+
+  VerifyRetTypes ret = _verify_pass;  // be optimistic
+
+  oop str = e_ptr->literal();
+  if (str == NULL) {
+    if (mesg_mode == _verify_with_mesgs) {
+      tty->print_cr("ERROR: NULL oop value in entry @ bucket[%d][%d]", bkt,
+                    e_cnt);
+    }
+    // NULL oop means no more verifications are possible
+    return _verify_fail_done;
+  }
+
+  if (str->klass() != SystemDictionary::String_klass()) {
+    if (mesg_mode == _verify_with_mesgs) {
+      tty->print_cr("ERROR: oop is not a String in entry @ bucket[%d][%d]",
+                    bkt, e_cnt);
+    }
+    // not a String means no more verifications are possible
+    return _verify_fail_done;
+  }
+
+  unsigned int h = java_lang_String::hash_string(str);
+  if (e_ptr->hash() != h) {
+    if (mesg_mode == _verify_with_mesgs) {
+      tty->print_cr("ERROR: broken hash value in entry @ bucket[%d][%d], "
+                    "bkt_hash=%d, str_hash=%d", bkt, e_cnt, e_ptr->hash(), h);
+    }
+    ret = _verify_fail_continue;
+  }
+
+  if (the_table()->hash_to_index(h) != bkt) {
+    if (mesg_mode == _verify_with_mesgs) {
+      tty->print_cr("ERROR: wrong index value for entry @ bucket[%d][%d], "
+                    "str_hash=%d, hash_to_index=%d", bkt, e_cnt, h,
+                    the_table()->hash_to_index(h));
+    }
+    ret = _verify_fail_continue;
+  }
+
+  return ret;
+}
+
+// See StringTable::verify() above for the quick verification that is
+// part of Universe::verify(). This verification is exhaustive and
+// reports on every issue that is found. StringTable::verify() only
+// reports on the first issue that is found.
+//
+// StringTable::verify_entry() checks:
+// - oop value != NULL (same as verify())
+// - oop value is a String
+// - hash(String) == hash in entry (same as verify())
+// - index for hash == index of entry (same as verify())
+//
+// StringTable::compare_entries() checks:
+// - oops are unique across all entries
+// - String values are unique across all entries
+//
+int StringTable::verify_and_compare_entries() {
+  assert(StringTable_lock->is_locked(), "sanity check");
+
+  int  fail_cnt = 0;
+
+  // first, verify all the entries individually:
+  for (int bkt = 0; bkt < the_table()->table_size(); bkt++) {
+    HashtableEntry<oop, mtSymbol>* e_ptr = the_table()->bucket(bkt);
+    for (int e_cnt = 0; e_ptr != NULL; e_ptr = e_ptr->next(), e_cnt++) {
+      VerifyRetTypes ret = verify_entry(bkt, e_cnt, e_ptr, _verify_with_mesgs);
+      if (ret != _verify_pass) {
+        fail_cnt++;
+      }
+    }
+  }
+
+  // Optimization: if the above check did not find any failures, then
+  // the comparison loop below does not need to call verify_entry()
+  // before calling compare_entries(). If there were failures, then we
+  // have to call verify_entry() to see if the entry can be passed to
+  // compare_entries() safely. When we call verify_entry() in the loop
+  // below, we do so quietly to void duplicate messages and we don't
+  // increment fail_cnt because the failures have already been counted.
+  bool need_entry_verify = (fail_cnt != 0);
+
+  // second, verify all entries relative to each other:
+  for (int bkt1 = 0; bkt1 < the_table()->table_size(); bkt1++) {
+    HashtableEntry<oop, mtSymbol>* e_ptr1 = the_table()->bucket(bkt1);
+    for (int e_cnt1 = 0; e_ptr1 != NULL; e_ptr1 = e_ptr1->next(), e_cnt1++) {
+      if (need_entry_verify) {
+        VerifyRetTypes ret = verify_entry(bkt1, e_cnt1, e_ptr1,
+                                          _verify_quietly);
+        if (ret == _verify_fail_done) {
+          // cannot use the current entry to compare against other entries
+          continue;
+        }
+      }
+
+      for (int bkt2 = bkt1; bkt2 < the_table()->table_size(); bkt2++) {
+        HashtableEntry<oop, mtSymbol>* e_ptr2 = the_table()->bucket(bkt2);
+        int e_cnt2;
+        for (e_cnt2 = 0; e_ptr2 != NULL; e_ptr2 = e_ptr2->next(), e_cnt2++) {
+          if (bkt1 == bkt2 && e_cnt2 <= e_cnt1) {
+            // skip the entries up to and including the one that
+            // we're comparing against
+            continue;
+          }
+
+          if (need_entry_verify) {
+            VerifyRetTypes ret = verify_entry(bkt2, e_cnt2, e_ptr2,
+                                              _verify_quietly);
+            if (ret == _verify_fail_done) {
+              // cannot compare against this entry
+              continue;
+            }
+          }
+
+          // compare two entries, report and count any failures:
+          if (compare_entries(bkt1, e_cnt1, e_ptr1, bkt2, e_cnt2, e_ptr2)
+              != _verify_pass) {
+            fail_cnt++;
+          }
+        }
+      }
+    }
+  }
+  return fail_cnt;
+}
 
 // Create a new table and using alternate hash code, populate the new table
 // with the existing strings.   Set flag to use the alternate hash code afterwards.
diff --git a/src/share/vm/classfile/symbolTable.hpp b/src/share/vm/classfile/symbolTable.hpp
index 7a0031c9a..dc7d0337a 100644
--- a/src/share/vm/classfile/symbolTable.hpp
+++ b/src/share/vm/classfile/symbolTable.hpp
@@ -311,6 +311,26 @@ public:
   static void verify();
   static void dump(outputStream* st);
 
+  enum VerifyMesgModes {
+    _verify_quietly    = 0,
+    _verify_with_mesgs = 1
+  };
+
+  enum VerifyRetTypes {
+    _verify_pass          = 0,
+    _verify_fail_continue = 1,
+    _verify_fail_done     = 2
+  };
+
+  static VerifyRetTypes compare_entries(int bkt1, int e_cnt1,
+                                        HashtableEntry<oop, mtSymbol>* e_ptr1,
+                                        int bkt2, int e_cnt2,
+                                        HashtableEntry<oop, mtSymbol>* e_ptr2);
+  static VerifyRetTypes verify_entry(int bkt, int e_cnt,
+                                     HashtableEntry<oop, mtSymbol>* e_ptr,
+                                     VerifyMesgModes mesg_mode);
+  static int verify_and_compare_entries();
+
   // Sharing
   static void copy_buckets(char** top, char*end) {
     the_table()->Hashtable<oop, mtSymbol>::copy_buckets(top, end);
diff --git a/src/share/vm/code/compiledIC.cpp b/src/share/vm/code/compiledIC.cpp
index b9db323e5..489e649fa 100644
--- a/src/share/vm/code/compiledIC.cpp
+++ b/src/share/vm/code/compiledIC.cpp
@@ -160,7 +160,7 @@ address CompiledIC::stub_address() const {
 // High-level access to an inline cache. Guaranteed to be MT-safe.
 
 
-void CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS) {
+bool CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS) {
   assert(CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "");
   assert(!is_optimized(), "cannot set an optimized virtual call to megamorphic");
   assert(is_call_to_compiled() || is_call_to_interpreted(), "going directly to megamorphic?");
@@ -170,8 +170,10 @@ void CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecod
     assert(bytecode == Bytecodes::_invokeinterface, "");
     int itable_index = call_info->itable_index();
     entry = VtableStubs::find_itable_stub(itable_index);
+    if (entry == false) {
+      return false;
+    }
 #ifdef ASSERT
-    assert(entry != NULL, "entry not computed");
     int index = call_info->resolved_method()->itable_index();
     assert(index == itable_index, "CallInfo pre-computes this");
 #endif //ASSERT
@@ -184,6 +186,9 @@ void CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecod
     int vtable_index = call_info->vtable_index();
     assert(call_info->resolved_klass()->verify_vtable_index(vtable_index), "sanity check");
     entry = VtableStubs::find_vtable_stub(vtable_index);
+    if (entry == NULL) {
+      return false;
+    }
     InlineCacheBuffer::create_transition_stub(this, NULL, entry);
   }
 
@@ -200,6 +205,7 @@ void CompiledIC::set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecod
   // race because the IC entry was complete when we safepointed so
   // cleaning it immediately is harmless.
   // assert(is_megamorphic(), "sanity check");
+  return true;
 }
 
 
diff --git a/src/share/vm/code/compiledIC.hpp b/src/share/vm/code/compiledIC.hpp
index 96cb0a582..598cbe949 100644
--- a/src/share/vm/code/compiledIC.hpp
+++ b/src/share/vm/code/compiledIC.hpp
@@ -226,7 +226,10 @@ class CompiledIC: public ResourceObj {
   //
   void set_to_clean();  // Can only be called during a safepoint operation
   void set_to_monomorphic(CompiledICInfo& info);
-  void set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS);
+
+  // Returns true if successful and false otherwise. The call can fail if memory
+  // allocation in the code cache fails.
+  bool set_to_megamorphic(CallInfo* call_info, Bytecodes::Code bytecode, TRAPS);
 
   static void compute_monomorphic_entry(methodHandle method, KlassHandle receiver_klass,
                                         bool is_optimized, bool static_bound, CompiledICInfo& info, TRAPS);
diff --git a/src/share/vm/code/vtableStubs.cpp b/src/share/vm/code/vtableStubs.cpp
index 7d9d7efaf..5af91a3a6 100644
--- a/src/share/vm/code/vtableStubs.cpp
+++ b/src/share/vm/code/vtableStubs.cpp
@@ -46,12 +46,9 @@ address VtableStub::_chunk             = NULL;
 address VtableStub::_chunk_end         = NULL;
 VMReg   VtableStub::_receiver_location = VMRegImpl::Bad();
 
-static int num_vtable_chunks = 0;
-
 
 void* VtableStub::operator new(size_t size, int code_size) throw() {
   assert(size == sizeof(VtableStub), "mismatched size");
-  num_vtable_chunks++;
   // compute real VtableStub size (rounded to nearest word)
   const int real_size = round_to(code_size + sizeof(VtableStub), wordSize);
   // malloc them in chunks to minimize header overhead
@@ -60,7 +57,7 @@ void* VtableStub::operator new(size_t size, int code_size) throw() {
     const int bytes = chunk_factor * real_size + pd_code_alignment();
     BufferBlob* blob = BufferBlob::create("vtable chunks", bytes);
     if (blob == NULL) {
-      vm_exit_out_of_memory(bytes, OOM_MALLOC_ERROR, "CodeCache: no room for vtable chunks");
+      return NULL;
     }
     _chunk = blob->content_begin();
     _chunk_end = _chunk + bytes;
@@ -121,6 +118,12 @@ address VtableStubs::find_stub(bool is_vtable_stub, int vtable_index) {
     } else {
       s = create_itable_stub(vtable_index);
     }
+
+    // Creation of vtable or itable can fail if there is not enough free space in the code cache.
+    if (s == NULL) {
+      return NULL;
+    }
+
     enter(is_vtable_stub, vtable_index, s);
     if (PrintAdapterHandlers) {
       tty->print_cr("Decoding VtableStub %s[%d]@%d",
diff --git a/src/share/vm/gc_implementation/g1/g1BiasedArray.cpp b/src/share/vm/gc_implementation/g1/g1BiasedArray.cpp
new file mode 100644
index 000000000..7f5023b42
--- /dev/null
+++ b/src/share/vm/gc_implementation/g1/g1BiasedArray.cpp
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "gc_implementation/g1/g1BiasedArray.hpp"
+
+#ifndef PRODUCT
+void G1BiasedMappedArrayBase::verify_index(idx_t index) const {
+  guarantee(_base != NULL, "Array not initialized");
+  guarantee(index < length(), err_msg("Index out of bounds index: "SIZE_FORMAT" length: "SIZE_FORMAT, index, length()));
+}
+
+void G1BiasedMappedArrayBase::verify_biased_index(idx_t biased_index) const {
+  guarantee(_biased_base != NULL, "Array not initialized");
+  guarantee(biased_index >= bias() && biased_index < (bias() + length()),
+    err_msg("Biased index out of bounds, index: "SIZE_FORMAT" bias: "SIZE_FORMAT" length: "SIZE_FORMAT, biased_index, bias(), length()));
+}
+
+void G1BiasedMappedArrayBase::verify_biased_index_inclusive_end(idx_t biased_index) const {
+  guarantee(_biased_base != NULL, "Array not initialized");
+  guarantee(biased_index >= bias() && biased_index <= (bias() + length()),
+    err_msg("Biased index out of inclusive bounds, index: "SIZE_FORMAT" bias: "SIZE_FORMAT" length: "SIZE_FORMAT, biased_index, bias(), length()));
+}
+
+class TestMappedArray : public G1BiasedMappedArray<int> {
+protected:
+  virtual int default_value() const { return 0xBAADBABE; }
+public:
+  static void test_biasedarray() {
+    const size_t REGION_SIZE_IN_WORDS = 512;
+    const size_t NUM_REGIONS = 20;
+    HeapWord* fake_heap = (HeapWord*)LP64_ONLY(0xBAAA00000) NOT_LP64(0xBA000000); // Any value that is non-zero
+
+    TestMappedArray array;
+    array.initialize(fake_heap, fake_heap + REGION_SIZE_IN_WORDS * NUM_REGIONS,
+            REGION_SIZE_IN_WORDS * HeapWordSize);
+    // Check address calculation (bounds)
+    assert(array.bottom_address_mapped() == fake_heap,
+      err_msg("bottom mapped address should be "PTR_FORMAT", but is "PTR_FORMAT, fake_heap, array.bottom_address_mapped()));
+    assert(array.end_address_mapped() == (fake_heap + REGION_SIZE_IN_WORDS * NUM_REGIONS), "must be");
+
+    int* bottom = array.address_mapped_to(fake_heap);
+    assert((void*)bottom == (void*) array.base(), "must be");
+    int* end = array.address_mapped_to(fake_heap + REGION_SIZE_IN_WORDS * NUM_REGIONS);
+    assert((void*)end == (void*)(array.base() + array.length()), "must be");
+    // The entire array should contain default value elements
+    for (int* current = bottom; current < end; current++) {
+      assert(*current == array.default_value(), "must be");
+    }
+
+    // Test setting values in the table
+
+    HeapWord* region_start_address = fake_heap + REGION_SIZE_IN_WORDS * (NUM_REGIONS / 2);
+    HeapWord* region_end_address = fake_heap + (REGION_SIZE_IN_WORDS * (NUM_REGIONS / 2) + REGION_SIZE_IN_WORDS - 1);
+
+    // Set/get by address tests: invert some value; first retrieve one
+    int actual_value = array.get_by_index(NUM_REGIONS / 2);
+    array.set_by_index(NUM_REGIONS / 2, ~actual_value);
+    // Get the same value by address, should correspond to the start of the "region"
+    int value = array.get_by_address(region_start_address);
+    assert(value == ~actual_value, "must be");
+    // Get the same value by address, at one HeapWord before the start
+    value = array.get_by_address(region_start_address - 1);
+    assert(value == array.default_value(), "must be");
+    // Get the same value by address, at the end of the "region"
+    value = array.get_by_address(region_end_address);
+    assert(value == ~actual_value, "must be");
+    // Make sure the next value maps to another index
+    value = array.get_by_address(region_end_address + 1);
+    assert(value == array.default_value(), "must be");
+
+    // Reset the value in the array
+    array.set_by_address(region_start_address + (region_end_address - region_start_address) / 2, actual_value);
+
+    // The entire array should have the default value again
+    for (int* current = bottom; current < end; current++) {
+      assert(*current == array.default_value(), "must be");
+    }
+
+    // Set/get by index tests: invert some value
+    idx_t index = NUM_REGIONS / 2;
+    actual_value = array.get_by_index(index);
+    array.set_by_index(index, ~actual_value);
+
+    value = array.get_by_index(index);
+    assert(value == ~actual_value, "must be");
+
+    value = array.get_by_index(index - 1);
+    assert(value == array.default_value(), "must be");
+
+    value = array.get_by_index(index + 1);
+    assert(value == array.default_value(), "must be");
+
+    array.set_by_index(0, 0);
+    value = array.get_by_index(0);
+    assert(value == 0, "must be");
+
+    array.set_by_index(array.length() - 1, 0);
+    value = array.get_by_index(array.length() - 1);
+    assert(value == 0, "must be");
+
+    array.set_by_index(index, 0);
+
+    // The array should have three zeros, and default values otherwise
+    size_t num_zeros = 0;
+    for (int* current = bottom; current < end; current++) {
+      assert(*current == array.default_value() || *current == 0, "must be");
+      if (*current == 0) {
+        num_zeros++;
+      }
+    }
+    assert(num_zeros == 3, "must be");
+  }
+};
+
+void TestG1BiasedArray_test() {
+  TestMappedArray::test_biasedarray();
+}
+
+#endif
diff --git a/src/share/vm/gc_implementation/g1/g1BiasedArray.hpp b/src/share/vm/gc_implementation/g1/g1BiasedArray.hpp
new file mode 100644
index 000000000..f80c70b4e
--- /dev/null
+++ b/src/share/vm/gc_implementation/g1/g1BiasedArray.hpp
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1BIASEDARRAY_HPP
+#define SHARE_VM_GC_IMPLEMENTATION_G1_G1BIASEDARRAY_HPP
+
+#include "utilities/debug.hpp"
+#include "memory/allocation.inline.hpp"
+
+// Implements the common base functionality for arrays that contain provisions
+// for accessing its elements using a biased index.
+// The element type is defined by the instantiating the template.
+class G1BiasedMappedArrayBase VALUE_OBJ_CLASS_SPEC {
+  friend class VMStructs;
+public:
+  typedef size_t idx_t;
+protected:
+  address _base;          // the real base address
+  size_t _length;         // the length of the array
+  address _biased_base;   // base address biased by "bias" elements
+  size_t _bias;           // the bias, i.e. the offset biased_base is located to the right in elements
+  uint _shift_by;         // the amount of bits to shift right when mapping to an index of the array.
+
+protected:
+
+  G1BiasedMappedArrayBase() : _base(NULL), _length(0), _biased_base(NULL),
+    _bias(0), _shift_by(0) { }
+
+  // Allocate a new array, generic version.
+  static address create_new_base_array(size_t length, size_t elem_size) {
+    assert(length > 0, "just checking");
+    assert(elem_size > 0, "just checking");
+    return NEW_C_HEAP_ARRAY(u_char, length * elem_size, mtGC);
+  }
+
+  // Initialize the members of this class. The biased start address of this array
+  // is the bias (in elements) multiplied by the element size.
+  void initialize_base(address base, size_t length, size_t bias, size_t elem_size, uint shift_by) {
+    assert(base != NULL, "just checking");
+    assert(length > 0, "just checking");
+    assert(shift_by < sizeof(uintptr_t) * 8, err_msg("Shifting by %zd, larger than word size?", shift_by));
+    _base = base;
+    _length = length;
+    _biased_base = base - (bias * elem_size);
+    _bias = bias;
+    _shift_by = shift_by;
+  }
+
+  // Allocate and initialize this array to cover the heap addresses in the range
+  // of [bottom, end).
+  void initialize(HeapWord* bottom, HeapWord* end, size_t target_elem_size_in_bytes, size_t mapping_granularity_in_bytes) {
+    assert(mapping_granularity_in_bytes > 0, "just checking");
+    assert(is_power_of_2(mapping_granularity_in_bytes),
+      err_msg("mapping granularity must be power of 2, is %zd", mapping_granularity_in_bytes));
+    assert((uintptr_t)bottom % mapping_granularity_in_bytes == 0,
+      err_msg("bottom mapping area address must be a multiple of mapping granularity %zd, is "PTR_FORMAT,
+        mapping_granularity_in_bytes, bottom));
+    assert((uintptr_t)end % mapping_granularity_in_bytes == 0,
+      err_msg("end mapping area address must be a multiple of mapping granularity %zd, is "PTR_FORMAT,
+        mapping_granularity_in_bytes, end));
+    size_t num_target_elems = (end - bottom) / (mapping_granularity_in_bytes / HeapWordSize);
+    idx_t bias = (uintptr_t)bottom / mapping_granularity_in_bytes;
+    address base = create_new_base_array(num_target_elems, target_elem_size_in_bytes);
+    initialize_base(base, num_target_elems, bias, target_elem_size_in_bytes, log2_intptr(mapping_granularity_in_bytes));
+  }
+
+  size_t bias() const { return _bias; }
+  uint shift_by() const { return _shift_by; }
+
+  void verify_index(idx_t index) const PRODUCT_RETURN;
+  void verify_biased_index(idx_t biased_index) const PRODUCT_RETURN;
+  void verify_biased_index_inclusive_end(idx_t biased_index) const PRODUCT_RETURN;
+
+public:
+   // Return the length of the array in elements.
+   size_t length() const { return _length; }
+};
+
+// Array that provides biased access and mapping from (valid) addresses in the
+// heap into this array.
+template<class T>
+class G1BiasedMappedArray : public G1BiasedMappedArrayBase {
+public:
+  typedef G1BiasedMappedArrayBase::idx_t idx_t;
+
+  T* base() const { return (T*)G1BiasedMappedArrayBase::_base; }
+  // Return the element of the given array at the given index. Assume
+  // the index is valid. This is a convenience method that does sanity
+  // checking on the index.
+  T get_by_index(idx_t index) const {
+    verify_index(index);
+    return this->base()[index];
+  }
+
+  // Set the element of the given array at the given index to the
+  // given value. Assume the index is valid. This is a convenience
+  // method that does sanity checking on the index.
+  void set_by_index(idx_t index, T value) {
+    verify_index(index);
+    this->base()[index] = value;
+  }
+
+  // The raw biased base pointer.
+  T* biased_base() const { return (T*)G1BiasedMappedArrayBase::_biased_base; }
+
+  // Return the element of the given array that covers the given word in the
+  // heap. Assumes the index is valid.
+  T get_by_address(HeapWord* value) const {
+    idx_t biased_index = ((uintptr_t)value) >> this->shift_by();
+    this->verify_biased_index(biased_index);
+    return biased_base()[biased_index];
+  }
+
+  // Set the value of the array entry that corresponds to the given array.
+  void set_by_address(HeapWord * address, T value) {
+    idx_t biased_index = ((uintptr_t)address) >> this->shift_by();
+    this->verify_biased_index(biased_index);
+    biased_base()[biased_index] = value;
+  }
+
+protected:
+  // Returns the address of the element the given address maps to
+  T* address_mapped_to(HeapWord* address) {
+    idx_t biased_index = ((uintptr_t)address) >> this->shift_by();
+    this->verify_biased_index_inclusive_end(biased_index);
+    return biased_base() + biased_index;
+  }
+
+public:
+  // Return the smallest address (inclusive) in the heap that this array covers.
+  HeapWord* bottom_address_mapped() const {
+    return (HeapWord*) ((uintptr_t)this->bias() << this->shift_by());
+  }
+
+  // Return the highest address (exclusive) in the heap that this array covers.
+  HeapWord* end_address_mapped() const {
+    return (HeapWord*) ((uintptr_t)(this->bias() + this->length()) << this->shift_by());
+  }
+
+protected:
+  virtual T default_value() const = 0;
+  // Set all elements of the given array to the given value.
+  void clear() {
+    T value = default_value();
+    for (idx_t i = 0; i < length(); i++) {
+      set_by_index(i, value);
+    }
+  }
+public:
+  G1BiasedMappedArray() {}
+
+  // Allocate and initialize this array to cover the heap addresses in the range
+  // of [bottom, end).
+  void initialize(HeapWord* bottom, HeapWord* end, size_t mapping_granularity) {
+    G1BiasedMappedArrayBase::initialize(bottom, end, sizeof(T), mapping_granularity);
+    this->clear();
+  }
+};
+
+#endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1BIASEDARRAY_HPP
diff --git a/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp b/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
index 1d8ff8a26..0ecfd3ab3 100644
--- a/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
+++ b/src/share/vm/gc_implementation/g1/g1CollectedHeap.cpp
@@ -2069,8 +2069,10 @@ jint G1CollectedHeap::initialize() {
   _g1_storage.initialize(g1_rs, 0);
   _g1_committed = MemRegion((HeapWord*)_g1_storage.low(), (size_t) 0);
   _hrs.initialize((HeapWord*) _g1_reserved.start(),
-                  (HeapWord*) _g1_reserved.end(),
-                  _expansion_regions);
+                  (HeapWord*) _g1_reserved.end());
+  assert(_hrs.max_length() == _expansion_regions,
+         err_msg("max length: %u expansion regions: %u",
+                 _hrs.max_length(), _expansion_regions));
 
   // Do later initialization work for concurrent refinement.
   _cg1r->init();
diff --git a/src/share/vm/gc_implementation/g1/heapRegionSeq.cpp b/src/share/vm/gc_implementation/g1/heapRegionSeq.cpp
index dade3dfdf..eaa8e10f3 100644
--- a/src/share/vm/gc_implementation/g1/heapRegionSeq.cpp
+++ b/src/share/vm/gc_implementation/g1/heapRegionSeq.cpp
@@ -71,27 +71,16 @@ uint HeapRegionSeq::find_contiguous_from(uint from, uint num) {
 
 // Public
 
-void HeapRegionSeq::initialize(HeapWord* bottom, HeapWord* end,
-                               uint max_length) {
+void HeapRegionSeq::initialize(HeapWord* bottom, HeapWord* end) {
   assert((uintptr_t) bottom % HeapRegion::GrainBytes == 0,
          "bottom should be heap region aligned");
   assert((uintptr_t) end % HeapRegion::GrainBytes == 0,
          "end should be heap region aligned");
 
-  _length = 0;
-  _heap_bottom = bottom;
-  _heap_end = end;
-  _region_shift = HeapRegion::LogOfHRGrainBytes;
   _next_search_index = 0;
   _allocated_length = 0;
-  _max_length = max_length;
 
-  _regions = NEW_C_HEAP_ARRAY(HeapRegion*, max_length, mtGC);
-  memset(_regions, 0, (size_t) max_length * sizeof(HeapRegion*));
-  _regions_biased = _regions - ((uintx) bottom >> _region_shift);
-
-  assert(&_regions[0] == &_regions_biased[addr_to_index_biased(bottom)],
-         "bottom should be included in the region with index 0");
+  _regions.initialize(bottom, end, HeapRegion::GrainBytes);
 }
 
 MemRegion HeapRegionSeq::expand_by(HeapWord* old_end,
@@ -101,15 +90,15 @@ MemRegion HeapRegionSeq::expand_by(HeapWord* old_end,
   G1CollectedHeap* g1h = G1CollectedHeap::heap();
 
   HeapWord* next_bottom = old_end;
-  assert(_heap_bottom <= next_bottom, "invariant");
+  assert(heap_bottom() <= next_bottom, "invariant");
   while (next_bottom < new_end) {
-    assert(next_bottom < _heap_end, "invariant");
+    assert(next_bottom < heap_end(), "invariant");
     uint index = length();
 
-    assert(index < _max_length, "otherwise we cannot expand further");
+    assert(index < max_length(), "otherwise we cannot expand further");
     if (index == 0) {
       // We have not allocated any regions so far
-      assert(next_bottom == _heap_bottom, "invariant");
+      assert(next_bottom == heap_bottom(), "invariant");
     } else {
       // next_bottom should match the end of the last/previous region
       assert(next_bottom == at(index - 1)->end(), "invariant");
@@ -122,8 +111,8 @@ MemRegion HeapRegionSeq::expand_by(HeapWord* old_end,
         // allocation failed, we bail out and return what we have done so far
         return MemRegion(old_end, next_bottom);
       }
-      assert(_regions[index] == NULL, "invariant");
-      _regions[index] = new_hr;
+      assert(_regions.get_by_index(index) == NULL, "invariant");
+      _regions.set_by_index(index, new_hr);
       increment_allocated_length();
     }
     // Have to increment the length first, otherwise we will get an
@@ -228,26 +217,26 @@ uint HeapRegionSeq::shrink_by(uint num_regions_to_remove) {
 
 #ifndef PRODUCT
 void HeapRegionSeq::verify_optional() {
-  guarantee(_length <= _allocated_length,
+  guarantee(length() <= _allocated_length,
             err_msg("invariant: _length: %u _allocated_length: %u",
-                    _length, _allocated_length));
-  guarantee(_allocated_length <= _max_length,
+                    length(), _allocated_length));
+  guarantee(_allocated_length <= max_length(),
             err_msg("invariant: _allocated_length: %u _max_length: %u",
-                    _allocated_length, _max_length));
-  guarantee(_next_search_index <= _length,
+                    _allocated_length, max_length()));
+  guarantee(_next_search_index <= length(),
             err_msg("invariant: _next_search_index: %u _length: %u",
-                    _next_search_index, _length));
+                    _next_search_index, length()));
 
-  HeapWord* prev_end = _heap_bottom;
+  HeapWord* prev_end = heap_bottom();
   for (uint i = 0; i < _allocated_length; i += 1) {
-    HeapRegion* hr = _regions[i];
+    HeapRegion* hr = _regions.get_by_index(i);
     guarantee(hr != NULL, err_msg("invariant: i: %u", i));
     guarantee(hr->bottom() == prev_end,
               err_msg("invariant i: %u "HR_FORMAT" prev_end: "PTR_FORMAT,
                       i, HR_FORMAT_PARAMS(hr), prev_end));
     guarantee(hr->hrs_index() == i,
               err_msg("invariant: i: %u hrs_index(): %u", i, hr->hrs_index()));
-    if (i < _length) {
+    if (i < length()) {
       // Asserts will fire if i is >= _length
       HeapWord* addr = hr->bottom();
       guarantee(addr_to_region(addr) == hr, "sanity");
@@ -265,8 +254,8 @@ void HeapRegionSeq::verify_optional() {
       prev_end = hr->end();
     }
   }
-  for (uint i = _allocated_length; i < _max_length; i += 1) {
-    guarantee(_regions[i] == NULL, err_msg("invariant i: %u", i));
+  for (uint i = _allocated_length; i < max_length(); i += 1) {
+    guarantee(_regions.get_by_index(i) == NULL, err_msg("invariant i: %u", i));
   }
 }
 #endif // PRODUCT
diff --git a/src/share/vm/gc_implementation/g1/heapRegionSeq.hpp b/src/share/vm/gc_implementation/g1/heapRegionSeq.hpp
index b7a58f76a..b0c3eb48a 100644
--- a/src/share/vm/gc_implementation/g1/heapRegionSeq.hpp
+++ b/src/share/vm/gc_implementation/g1/heapRegionSeq.hpp
@@ -25,10 +25,17 @@
 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_HPP
 
+#include "gc_implementation/g1/g1BiasedArray.hpp"
+
 class HeapRegion;
 class HeapRegionClosure;
 class FreeRegionList;
 
+class G1HeapRegionTable : public G1BiasedMappedArray<HeapRegion*> {
+ protected:
+   virtual HeapRegion* default_value() const { return NULL; }
+};
+
 // This class keeps track of the region metadata (i.e., HeapRegion
 // instances). They are kept in the _regions array in address
 // order. A region's index in the array corresponds to its index in
@@ -44,35 +51,21 @@ class FreeRegionList;
 //
 // We keep track of three lengths:
 //
-// * _length (returned by length()) is the number of currently
+// * _committed_length (returned by length()) is the number of currently
 //   committed regions.
 // * _allocated_length (not exposed outside this class) is the
 //   number of regions for which we have HeapRegions.
-// * _max_length (returned by max_length()) is the maximum number of
-//   regions the heap can have.
+// * max_length() returns the maximum number of regions the heap can have.
 //
-// and maintain that: _length <= _allocated_length <= _max_length
+// and maintain that: _committed_length <= _allocated_length <= max_length()
 
 class HeapRegionSeq: public CHeapObj<mtGC> {
   friend class VMStructs;
 
-  // The array that holds the HeapRegions.
-  HeapRegion** _regions;
-
-  // Version of _regions biased to address 0
-  HeapRegion** _regions_biased;
+  G1HeapRegionTable _regions;
 
   // The number of regions committed in the heap.
-  uint _length;
-
-  // The address of the first reserved word in the heap.
-  HeapWord* _heap_bottom;
-
-  // The address of the last reserved word in the heap - 1.
-  HeapWord* _heap_end;
-
-  // The log of the region byte size.
-  uint _region_shift;
+  uint _committed_length;
 
   // A hint for which index to start searching from for humongous
   // allocations.
@@ -81,37 +74,33 @@ class HeapRegionSeq: public CHeapObj<mtGC> {
   // The number of regions for which we have allocated HeapRegions for.
   uint _allocated_length;
 
-  // The maximum number of regions in the heap.
-  uint _max_length;
-
   // Find a contiguous set of empty regions of length num, starting
   // from the given index.
   uint find_contiguous_from(uint from, uint num);
 
-  // Map a heap address to a biased region index. Assume that the
-  // address is valid.
-  inline uintx addr_to_index_biased(HeapWord* addr) const;
-
   void increment_allocated_length() {
-    assert(_allocated_length < _max_length, "pre-condition");
+    assert(_allocated_length < max_length(), "pre-condition");
     _allocated_length++;
   }
 
   void increment_length() {
-    assert(_length < _max_length, "pre-condition");
-    _length++;
+    assert(length() < max_length(), "pre-condition");
+    _committed_length++;
   }
 
   void decrement_length() {
-    assert(_length > 0, "pre-condition");
-    _length--;
+    assert(length() > 0, "pre-condition");
+    _committed_length--;
   }
 
+  HeapWord* heap_bottom() const { return _regions.bottom_address_mapped(); }
+  HeapWord* heap_end() const {return _regions.end_address_mapped(); }
+
  public:
   // Empty contructor, we'll initialize it with the initialize() method.
-  HeapRegionSeq() { }
+  HeapRegionSeq() : _regions(), _committed_length(0), _next_search_index(0), _allocated_length(0) { }
 
-  void initialize(HeapWord* bottom, HeapWord* end, uint max_length);
+  void initialize(HeapWord* bottom, HeapWord* end);
 
   // Return the HeapRegion at the given index. Assume that the index
   // is valid.
@@ -126,10 +115,10 @@ class HeapRegionSeq: public CHeapObj<mtGC> {
   inline HeapRegion* addr_to_region_unsafe(HeapWord* addr) const;
 
   // Return the number of regions that have been committed in the heap.
-  uint length() const { return _length; }
+  uint length() const { return _committed_length; }
 
   // Return the maximum number of regions in the heap.
-  uint max_length() const { return _max_length; }
+  uint max_length() const { return (uint)_regions.length(); }
 
   // Expand the sequence to reflect that the heap has grown from
   // old_end to new_end. Either create new HeapRegions, or re-use
diff --git a/src/share/vm/gc_implementation/g1/heapRegionSeq.inline.hpp b/src/share/vm/gc_implementation/g1/heapRegionSeq.inline.hpp
index e840287ed..96588dea0 100644
--- a/src/share/vm/gc_implementation/g1/heapRegionSeq.inline.hpp
+++ b/src/share/vm/gc_implementation/g1/heapRegionSeq.inline.hpp
@@ -28,28 +28,16 @@
 #include "gc_implementation/g1/heapRegion.hpp"
 #include "gc_implementation/g1/heapRegionSeq.hpp"
 
-inline uintx HeapRegionSeq::addr_to_index_biased(HeapWord* addr) const {
-  assert(_heap_bottom <= addr && addr < _heap_end,
-         err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,
-                 addr, _heap_bottom, _heap_end));
-  uintx index = (uintx) addr >> _region_shift;
-  return index;
-}
-
 inline HeapRegion* HeapRegionSeq::addr_to_region_unsafe(HeapWord* addr) const {
-  assert(_heap_bottom <= addr && addr < _heap_end,
-         err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT" end: "PTR_FORMAT,
-                 addr, _heap_bottom, _heap_end));
-  uintx index_biased = addr_to_index_biased(addr);
-  HeapRegion* hr = _regions_biased[index_biased];
+  HeapRegion* hr = _regions.get_by_address(addr);
   assert(hr != NULL, "invariant");
   return hr;
 }
 
 inline HeapRegion* HeapRegionSeq::addr_to_region(HeapWord* addr) const {
-  if (addr != NULL && addr < _heap_end) {
-    assert(addr >= _heap_bottom,
-          err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT, addr, _heap_bottom));
+  if (addr != NULL && addr < heap_end()) {
+    assert(addr >= heap_bottom(),
+          err_msg("addr: "PTR_FORMAT" bottom: "PTR_FORMAT, addr, heap_bottom()));
     return addr_to_region_unsafe(addr);
   }
   return NULL;
@@ -57,7 +45,7 @@ inline HeapRegion* HeapRegionSeq::addr_to_region(HeapWord* addr) const {
 
 inline HeapRegion* HeapRegionSeq::at(uint index) const {
   assert(index < length(), "pre-condition");
-  HeapRegion* hr = _regions[index];
+  HeapRegion* hr = _regions.get_by_index(index);
   assert(hr != NULL, "sanity");
   assert(hr->hrs_index() == index, "sanity");
   return hr;
diff --git a/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp b/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp
index 736c2d750..9268eb78e 100644
--- a/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp
+++ b/src/share/vm/gc_implementation/g1/vmStructs_g1.hpp
@@ -34,8 +34,14 @@
   static_field(HeapRegion, GrainBytes,        size_t)                         \
   static_field(HeapRegion, LogOfHRGrainBytes, int)                            \
                                                                               \
-  nonstatic_field(HeapRegionSeq,   _regions, HeapRegion**)                    \
-  nonstatic_field(HeapRegionSeq,   _length,  uint)                            \
+  nonstatic_field(G1HeapRegionTable, _base,             address)              \
+  nonstatic_field(G1HeapRegionTable, _length,           size_t)               \
+  nonstatic_field(G1HeapRegionTable, _biased_base,      address)              \
+  nonstatic_field(G1HeapRegionTable, _bias,             size_t)               \
+  nonstatic_field(G1HeapRegionTable, _shift_by,         uint)                 \
+                                                                              \
+  nonstatic_field(HeapRegionSeq,   _regions,            G1HeapRegionTable)    \
+  nonstatic_field(HeapRegionSeq,   _committed_length,   uint)                 \
                                                                               \
   nonstatic_field(G1CollectedHeap, _hrs,                HeapRegionSeq)        \
   nonstatic_field(G1CollectedHeap, _g1_committed,       MemRegion)            \
@@ -58,6 +64,8 @@
 
 #define VM_TYPES_G1(declare_type, declare_toplevel_type)                      \
                                                                               \
+  declare_toplevel_type(G1HeapRegionTable)                                    \
+                                                                              \
   declare_type(G1CollectedHeap, SharedHeap)                                   \
                                                                               \
   declare_type(HeapRegion, ContiguousSpace)                                   \
diff --git a/src/share/vm/memory/gcLocker.cpp b/src/share/vm/memory/gcLocker.cpp
index eda728b70..1b0c94ee1 100644
--- a/src/share/vm/memory/gcLocker.cpp
+++ b/src/share/vm/memory/gcLocker.cpp
@@ -122,7 +122,7 @@ void GC_locker::jni_unlock(JavaThread* thread) {
     // strictly needed. It's added here to make it clear that
     // the GC will NOT be performed if any other caller
     // of GC_locker::lock() still needs GC locked.
-    if (!is_active()) {
+    if (!is_active_internal()) {
       _doing_gc = true;
       {
         // Must give up the lock while at a safepoint
diff --git a/src/share/vm/memory/gcLocker.hpp b/src/share/vm/memory/gcLocker.hpp
index 8ede8fb27..45b8a8f89 100644
--- a/src/share/vm/memory/gcLocker.hpp
+++ b/src/share/vm/memory/gcLocker.hpp
@@ -88,7 +88,7 @@ class GC_locker: public AllStatic {
  public:
   // Accessors
   static bool is_active() {
-    assert(_needs_gc || SafepointSynchronize::is_at_safepoint(), "only read at safepoint");
+    assert(SafepointSynchronize::is_at_safepoint(), "only read at safepoint");
     return is_active_internal();
   }
   static bool needs_gc()       { return _needs_gc;                        }
diff --git a/src/share/vm/memory/metaspace.cpp b/src/share/vm/memory/metaspace.cpp
index c12c0b863..06f3d0937 100644
--- a/src/share/vm/memory/metaspace.cpp
+++ b/src/share/vm/memory/metaspace.cpp
@@ -23,6 +23,7 @@
  */
 #include "precompiled.hpp"
 #include "gc_interface/collectedHeap.hpp"
+#include "memory/allocation.hpp"
 #include "memory/binaryTreeDictionary.hpp"
 #include "memory/freeList.hpp"
 #include "memory/collectorPolicy.hpp"
@@ -111,7 +112,7 @@ typedef class FreeList<Metachunk> ChunkList;
 // Has three lists of free chunks, and a total size and
 // count that includes all three
 
-class ChunkManager VALUE_OBJ_CLASS_SPEC {
+class ChunkManager : public CHeapObj<mtInternal> {
 
   // Free list of chunks of different sizes.
   //   SpecializedChunk
@@ -158,7 +159,12 @@ class ChunkManager VALUE_OBJ_CLASS_SPEC {
 
  public:
 
-  ChunkManager() : _free_chunks_total(0), _free_chunks_count(0) {}
+  ChunkManager(size_t specialized_size, size_t small_size, size_t medium_size)
+      : _free_chunks_total(0), _free_chunks_count(0) {
+    _free_chunks[SpecializedIndex].set_size(specialized_size);
+    _free_chunks[SmallIndex].set_size(small_size);
+    _free_chunks[MediumIndex].set_size(medium_size);
+  }
 
   // add or delete (return) a chunk to the global freelist.
   Metachunk* chunk_freelist_allocate(size_t word_size);
@@ -219,7 +225,7 @@ class ChunkManager VALUE_OBJ_CLASS_SPEC {
   void locked_print_free_chunks(outputStream* st);
   void locked_print_sum_free_chunks(outputStream* st);
 
-  void print_on(outputStream* st);
+  void print_on(outputStream* st) const;
 };
 
 // Used to manage the free list of Metablocks (a block corresponds
@@ -276,11 +282,6 @@ class VirtualSpaceNode : public CHeapObj<mtClass> {
   // VirtualSpace
   Metachunk* first_chunk() { return (Metachunk*) bottom(); }
 
-  void inc_container_count();
-#ifdef ASSERT
-  uint container_count_slow();
-#endif
-
  public:
 
   VirtualSpaceNode(size_t byte_size);
@@ -314,8 +315,10 @@ class VirtualSpaceNode : public CHeapObj<mtClass> {
   void inc_top(size_t word_size) { _top += word_size; }
 
   uintx container_count() { return _container_count; }
+  void inc_container_count();
   void dec_container_count();
 #ifdef ASSERT
+  uint container_count_slow();
   void verify_container_count();
 #endif
 
@@ -421,8 +424,6 @@ class VirtualSpaceList : public CHeapObj<mtClass> {
   VirtualSpaceNode* _virtual_space_list;
   // virtual space currently being used for allocations
   VirtualSpaceNode* _current_virtual_space;
-  // Free chunk list for all other metadata
-  ChunkManager      _chunk_manager;
 
   // Can this virtual list allocate >1 spaces?  Also, used to determine
   // whether to allocate unlimited small chunks in this virtual space
@@ -475,7 +476,6 @@ class VirtualSpaceList : public CHeapObj<mtClass> {
     return _current_virtual_space;
   }
 
-  ChunkManager* chunk_manager() { return &_chunk_manager; }
   bool is_class() const { return _is_class; }
 
   // Allocate the first virtualspace.
@@ -494,14 +494,7 @@ class VirtualSpaceList : public CHeapObj<mtClass> {
   void dec_virtual_space_count();
 
   // Unlink empty VirtualSpaceNodes and free it.
-  void purge();
-
-  // Used and capacity in the entire list of virtual spaces.
-  // These are global values shared by all Metaspaces
-  size_t capacity_words_sum();
-  size_t capacity_bytes_sum() { return capacity_words_sum() * BytesPerWord; }
-  size_t used_words_sum();
-  size_t used_bytes_sum() { return used_words_sum() * BytesPerWord; }
+  void purge(ChunkManager* chunk_manager);
 
   bool contains(const void *ptr);
 
@@ -582,18 +575,12 @@ class SpaceManager : public CHeapObj<mtClass> {
   // Type of metadata allocated.
   Metaspace::MetadataType _mdtype;
 
-  // Chunk related size
-  size_t _medium_chunk_bunch;
-
   // List of chunks in use by this SpaceManager.  Allocations
   // are done from the current chunk.  The list is used for deallocating
   // chunks when the SpaceManager is freed.
   Metachunk* _chunks_in_use[NumberOfInUseLists];
   Metachunk* _current_chunk;
 
-  // Virtual space where allocation comes from.
-  VirtualSpaceList* _vs_list;
-
   // Number of small chunks to allocate to a manager
   // If class space manager, small chunks are unlimited
   static uint const _small_chunk_limit;
@@ -626,7 +613,9 @@ class SpaceManager : public CHeapObj<mtClass> {
   }
 
   Metaspace::MetadataType mdtype() { return _mdtype; }
-  VirtualSpaceList* vs_list() const    { return _vs_list; }
+
+  VirtualSpaceList* vs_list()   const { return Metaspace::get_space_list(_mdtype); }
+  ChunkManager* chunk_manager() const { return Metaspace::get_chunk_manager(_mdtype); }
 
   Metachunk* current_chunk() const { return _current_chunk; }
   void set_current_chunk(Metachunk* v) {
@@ -648,18 +637,19 @@ class SpaceManager : public CHeapObj<mtClass> {
 
  public:
   SpaceManager(Metaspace::MetadataType mdtype,
-               Mutex* lock,
-               VirtualSpaceList* vs_list);
+               Mutex* lock);
   ~SpaceManager();
 
   enum ChunkMultiples {
     MediumChunkMultiple = 4
   };
 
+  bool is_class() { return _mdtype == Metaspace::ClassType; }
+
   // Accessors
   size_t specialized_chunk_size() { return SpecializedChunk; }
-  size_t small_chunk_size() { return (size_t) vs_list()->is_class() ? ClassSmallChunk : SmallChunk; }
-  size_t medium_chunk_size() { return (size_t) vs_list()->is_class() ? ClassMediumChunk : MediumChunk; }
+  size_t small_chunk_size() { return (size_t) is_class() ? ClassSmallChunk : SmallChunk; }
+  size_t medium_chunk_size() { return (size_t) is_class() ? ClassMediumChunk : MediumChunk; }
   size_t medium_chunk_bunch() { return medium_chunk_size() * MediumChunkMultiple; }
 
   size_t allocated_blocks_words() const { return _allocated_blocks_words; }
@@ -762,7 +752,7 @@ void VirtualSpaceNode::inc_container_count() {
   _container_count++;
   assert(_container_count == container_count_slow(),
          err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT
-                 "container_count_slow() " SIZE_FORMAT,
+                 " container_count_slow() " SIZE_FORMAT,
                  _container_count, container_count_slow()));
 }
 
@@ -775,7 +765,7 @@ void VirtualSpaceNode::dec_container_count() {
 void VirtualSpaceNode::verify_container_count() {
   assert(_container_count == container_count_slow(),
     err_msg("Inconsistency in countainer_count _container_count " SIZE_FORMAT
-            "container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow()));
+            " container_count_slow() " SIZE_FORMAT, _container_count, container_count_slow()));
 }
 #endif
 
@@ -1020,7 +1010,7 @@ void ChunkManager::remove_chunk(Metachunk* chunk) {
 // Walk the list of VirtualSpaceNodes and delete
 // nodes with a 0 container_count.  Remove Metachunks in
 // the node from their respective freelists.
-void VirtualSpaceList::purge() {
+void VirtualSpaceList::purge(ChunkManager* chunk_manager) {
   assert_lock_strong(SpaceManager::expand_lock());
   // Don't use a VirtualSpaceListIterator because this
   // list is being changed and a straightforward use of an iterator is not safe.
@@ -1042,7 +1032,7 @@ void VirtualSpaceList::purge() {
         prev_vsl->set_next(vsl->next());
       }
 
-      vsl->purge(chunk_manager());
+      vsl->purge(chunk_manager);
       dec_reserved_words(vsl->reserved_words());
       dec_committed_words(vsl->committed_words());
       dec_virtual_space_count();
@@ -1064,36 +1054,6 @@ void VirtualSpaceList::purge() {
 #endif
 }
 
-size_t VirtualSpaceList::used_words_sum() {
-  size_t allocated_by_vs = 0;
-  VirtualSpaceListIterator iter(virtual_space_list());
-  while (iter.repeat()) {
-    VirtualSpaceNode* vsl = iter.get_next();
-    // Sum used region [bottom, top) in each virtualspace
-    allocated_by_vs += vsl->used_words_in_vs();
-  }
-  assert(allocated_by_vs >= chunk_manager()->free_chunks_total_words(),
-    err_msg("Total in free chunks " SIZE_FORMAT
-            " greater than total from virtual_spaces " SIZE_FORMAT,
-            allocated_by_vs, chunk_manager()->free_chunks_total_words()));
-  size_t used =
-    allocated_by_vs - chunk_manager()->free_chunks_total_words();
-  return used;
-}
-
-// Space available in all MetadataVirtualspaces allocated
-// for metadata.  This is the upper limit on the capacity
-// of chunks allocated out of all the MetadataVirtualspaces.
-size_t VirtualSpaceList::capacity_words_sum() {
-  size_t capacity = 0;
-  VirtualSpaceListIterator iter(virtual_space_list());
-  while (iter.repeat()) {
-    VirtualSpaceNode* vsl = iter.get_next();
-    capacity += vsl->capacity_words_in_vs();
-  }
-  return capacity;
-}
-
 VirtualSpaceList::VirtualSpaceList(size_t word_size ) :
                                    _is_class(false),
                                    _virtual_space_list(NULL),
@@ -1104,10 +1064,6 @@ VirtualSpaceList::VirtualSpaceList(size_t word_size ) :
   MutexLockerEx cl(SpaceManager::expand_lock(),
                    Mutex::_no_safepoint_check_flag);
   bool initialization_succeeded = grow_vs(word_size);
-
-  _chunk_manager.free_chunks(SpecializedIndex)->set_size(SpecializedChunk);
-  _chunk_manager.free_chunks(SmallIndex)->set_size(SmallChunk);
-  _chunk_manager.free_chunks(MediumIndex)->set_size(MediumChunk);
   assert(initialization_succeeded,
     " VirtualSpaceList initialization should not fail");
 }
@@ -1123,9 +1079,6 @@ VirtualSpaceList::VirtualSpaceList(ReservedSpace rs) :
                    Mutex::_no_safepoint_check_flag);
   VirtualSpaceNode* class_entry = new VirtualSpaceNode(rs);
   bool succeeded = class_entry->initialize();
-  _chunk_manager.free_chunks(SpecializedIndex)->set_size(SpecializedChunk);
-  _chunk_manager.free_chunks(SmallIndex)->set_size(ClassSmallChunk);
-  _chunk_manager.free_chunks(MediumIndex)->set_size(ClassMediumChunk);
   assert(succeeded, " VirtualSpaceList initialization should not fail");
   link_vs(class_entry);
 }
@@ -1142,7 +1095,7 @@ bool VirtualSpaceList::grow_vs(size_t vs_word_size) {
   }
   // Reserve the space
   size_t vs_byte_size = vs_word_size * BytesPerWord;
-  assert(vs_byte_size % os::vm_page_size() == 0, "Not aligned");
+  assert(vs_byte_size % os::vm_allocation_granularity() == 0, "Not aligned");
 
   // Allocate the meta virtual space and initialize it.
   VirtualSpaceNode* new_entry = new VirtualSpaceNode(vs_byte_size);
@@ -1195,15 +1148,8 @@ Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size,
                                            size_t grow_chunks_by_words,
                                            size_t medium_chunk_bunch) {
 
-  // Get a chunk from the chunk freelist
-  Metachunk* next = chunk_manager()->chunk_freelist_allocate(grow_chunks_by_words);
-
-  if (next != NULL) {
-    next->container()->inc_container_count();
-  } else {
-    // Allocate a chunk out of the current virtual space.
-    next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words);
-  }
+  // Allocate a chunk out of the current virtual space.
+  Metachunk* next = current_virtual_space()->get_chunk_vs(grow_chunks_by_words);
 
   if (next == NULL) {
     // Not enough room in current virtual space.  Try to commit
@@ -1221,12 +1167,14 @@ Metachunk* VirtualSpaceList::get_new_chunk(size_t word_size,
       // being used for CompressedHeaders, don't allocate a new virtualspace.
       if (can_grow() && MetaspaceGC::should_expand(this, word_size)) {
         // Get another virtual space.
-          size_t grow_vs_words =
-            MAX2((size_t)VirtualSpaceSize, aligned_expand_vs_by_words);
+        size_t allocation_aligned_expand_words =
+            align_size_up(aligned_expand_vs_by_words, os::vm_allocation_granularity() / BytesPerWord);
+        size_t grow_vs_words =
+            MAX2((size_t)VirtualSpaceSize, allocation_aligned_expand_words);
         if (grow_vs(grow_vs_words)) {
           // Got it.  It's on the list now.  Get a chunk from it.
           assert(current_virtual_space()->expanded_words() == 0,
-              "New virtuals space nodes should not have expanded");
+              "New virtual space nodes should not have expanded");
 
           size_t grow_chunks_by_words_aligned = align_size_up(grow_chunks_by_words,
                                                               page_size_words);
@@ -1342,8 +1290,9 @@ bool MetaspaceGC::should_expand(VirtualSpaceList* vsl, size_t word_size) {
   // reserved space, because this is a larger space prereserved for compressed
   // class pointers.
   if (!FLAG_IS_DEFAULT(MaxMetaspaceSize)) {
-    size_t real_allocated = Metaspace::space_list()->reserved_words() +
-              MetaspaceAux::allocated_capacity_bytes(Metaspace::ClassType);
+    size_t nonclass_allocated = MetaspaceAux::reserved_bytes(Metaspace::NonClassType);
+    size_t class_allocated    = MetaspaceAux::allocated_capacity_bytes(Metaspace::ClassType);
+    size_t real_allocated     = nonclass_allocated + class_allocated;
     if (real_allocated >= MaxMetaspaceSize) {
       return false;
     }
@@ -1536,15 +1485,15 @@ void Metadebug::deallocate_chunk_a_lot(SpaceManager* sm,
       if (dummy_chunk == NULL) {
         break;
       }
-      vsl->chunk_manager()->chunk_freelist_deallocate(dummy_chunk);
+      sm->chunk_manager()->chunk_freelist_deallocate(dummy_chunk);
 
       if (TraceMetadataChunkAllocation && Verbose) {
         gclog_or_tty->print("Metadebug::deallocate_chunk_a_lot: %d) ",
                                sm->sum_count_in_chunks_in_use());
         dummy_chunk->print_on(gclog_or_tty);
         gclog_or_tty->print_cr("  Free chunks total %d  count %d",
-                               vsl->chunk_manager()->free_chunks_total_words(),
-                               vsl->chunk_manager()->free_chunks_count());
+                               sm->chunk_manager()->free_chunks_total_words(),
+                               sm->chunk_manager()->free_chunks_count());
       }
     }
   } else {
@@ -1796,6 +1745,8 @@ Metachunk* ChunkManager::free_chunks_get(size_t word_size) {
   // work.
   chunk->set_is_free(false);
 #endif
+  chunk->container()->inc_container_count();
+
   slow_locked_verify();
   return chunk;
 }
@@ -1830,9 +1781,9 @@ Metachunk* ChunkManager::chunk_freelist_allocate(size_t word_size) {
   return chunk;
 }
 
-void ChunkManager::print_on(outputStream* out) {
+void ChunkManager::print_on(outputStream* out) const {
   if (PrintFLSStatistics != 0) {
-    humongous_dictionary()->report_statistics();
+    const_cast<ChunkManager *>(this)->humongous_dictionary()->report_statistics();
   }
 }
 
@@ -1979,8 +1930,8 @@ void SpaceManager::locked_print_chunks_in_use_on(outputStream* st) const {
     }
   }
 
-  vs_list()->chunk_manager()->locked_print_free_chunks(st);
-  vs_list()->chunk_manager()->locked_print_sum_free_chunks(st);
+  chunk_manager()->locked_print_free_chunks(st);
+  chunk_manager()->locked_print_sum_free_chunks(st);
 }
 
 size_t SpaceManager::calc_chunk_size(size_t word_size) {
@@ -2084,9 +2035,7 @@ void SpaceManager::print_on(outputStream* st) const {
 }
 
 SpaceManager::SpaceManager(Metaspace::MetadataType mdtype,
-                           Mutex* lock,
-                           VirtualSpaceList* vs_list) :
-  _vs_list(vs_list),
+                           Mutex* lock) :
   _mdtype(mdtype),
   _allocated_blocks_words(0),
   _allocated_chunks_words(0),
@@ -2172,9 +2121,7 @@ SpaceManager::~SpaceManager() {
   MutexLockerEx fcl(SpaceManager::expand_lock(),
                     Mutex::_no_safepoint_check_flag);
 
-  ChunkManager* chunk_manager = vs_list()->chunk_manager();
-
-  chunk_manager->slow_locked_verify();
+  chunk_manager()->slow_locked_verify();
 
   dec_total_from_size_metrics();
 
@@ -2188,8 +2135,8 @@ SpaceManager::~SpaceManager() {
 
   // Have to update before the chunks_in_use lists are emptied
   // below.
-  chunk_manager->inc_free_chunks_total(allocated_chunks_words(),
-                                       sum_count_in_chunks_in_use());
+  chunk_manager()->inc_free_chunks_total(allocated_chunks_words(),
+                                         sum_count_in_chunks_in_use());
 
   // Add all the chunks in use by this space manager
   // to the global list of free chunks.
@@ -2204,11 +2151,11 @@ SpaceManager::~SpaceManager() {
                              chunk_size_name(i));
     }
     Metachunk* chunks = chunks_in_use(i);
-    chunk_manager->return_chunks(i, chunks);
+    chunk_manager()->return_chunks(i, chunks);
     set_chunks_in_use(i, NULL);
     if (TraceMetadataChunkAllocation && Verbose) {
       gclog_or_tty->print_cr("updated freelist count %d %s",
-                             chunk_manager->free_chunks(i)->count(),
+                             chunk_manager()->free_chunks(i)->count(),
                              chunk_size_name(i));
     }
     assert(i != HumongousIndex, "Humongous chunks are handled explicitly later");
@@ -2245,16 +2192,16 @@ SpaceManager::~SpaceManager() {
                    humongous_chunks->word_size(), HumongousChunkGranularity));
     Metachunk* next_humongous_chunks = humongous_chunks->next();
     humongous_chunks->container()->dec_container_count();
-    chunk_manager->humongous_dictionary()->return_chunk(humongous_chunks);
+    chunk_manager()->humongous_dictionary()->return_chunk(humongous_chunks);
     humongous_chunks = next_humongous_chunks;
   }
   if (TraceMetadataChunkAllocation && Verbose) {
     gclog_or_tty->print_cr("");
     gclog_or_tty->print_cr("updated dictionary count %d %s",
-                     chunk_manager->humongous_dictionary()->total_count(),
+                     chunk_manager()->humongous_dictionary()->total_count(),
                      chunk_size_name(HumongousIndex));
   }
-  chunk_manager->slow_locked_verify();
+  chunk_manager()->slow_locked_verify();
 }
 
 const char* SpaceManager::chunk_size_name(ChunkIndex index) const {
@@ -2343,9 +2290,7 @@ void SpaceManager::add_chunk(Metachunk* new_chunk, bool make_current) {
     gclog_or_tty->print("SpaceManager::add_chunk: %d) ",
                         sum_count_in_chunks_in_use());
     new_chunk->print_on(gclog_or_tty);
-    if (vs_list() != NULL) {
-      vs_list()->chunk_manager()->locked_print_free_chunks(gclog_or_tty);
-    }
+    chunk_manager()->locked_print_free_chunks(gclog_or_tty);
   }
 }
 
@@ -2361,10 +2306,14 @@ void SpaceManager::retire_current_chunk() {
 
 Metachunk* SpaceManager::get_new_chunk(size_t word_size,
                                        size_t grow_chunks_by_words) {
+  // Get a chunk from the chunk freelist
+  Metachunk* next = chunk_manager()->chunk_freelist_allocate(grow_chunks_by_words);
 
-  Metachunk* next = vs_list()->get_new_chunk(word_size,
-                                             grow_chunks_by_words,
-                                             medium_chunk_bunch());
+  if (next == NULL) {
+    next = vs_list()->get_new_chunk(word_size,
+                                    grow_chunks_by_words,
+                                    medium_chunk_bunch());
+  }
 
   if (TraceMetadataHumongousAllocation && next != NULL &&
       SpaceManager::is_humongous(next->word_size())) {
@@ -2644,13 +2593,12 @@ size_t MetaspaceAux::committed_bytes(Metaspace::MetadataType mdtype) {
 size_t MetaspaceAux::min_chunk_size_words() { return Metaspace::first_chunk_word_size(); }
 
 size_t MetaspaceAux::free_chunks_total_words(Metaspace::MetadataType mdtype) {
-  VirtualSpaceList* list = Metaspace::get_space_list(mdtype);
-  if (list == NULL) {
+  ChunkManager* chunk_manager = Metaspace::get_chunk_manager(mdtype);
+  if (chunk_manager == NULL) {
     return 0;
   }
-  ChunkManager* chunk = list->chunk_manager();
-  chunk->slow_verify();
-  return chunk->free_chunks_total_words();
+  chunk_manager->slow_verify();
+  return chunk_manager->free_chunks_total_words();
 }
 
 size_t MetaspaceAux::free_chunks_total_bytes(Metaspace::MetadataType mdtype) {
@@ -2801,9 +2749,9 @@ void MetaspaceAux::dump(outputStream* out) {
 }
 
 void MetaspaceAux::verify_free_chunks() {
-  Metaspace::space_list()->chunk_manager()->verify();
+  Metaspace::chunk_manager_metadata()->verify();
   if (Metaspace::using_class_space()) {
-    Metaspace::class_space_list()->chunk_manager()->verify();
+    Metaspace::chunk_manager_class()->verify();
   }
 }
 
@@ -2874,6 +2822,9 @@ Metaspace::~Metaspace() {
 VirtualSpaceList* Metaspace::_space_list = NULL;
 VirtualSpaceList* Metaspace::_class_space_list = NULL;
 
+ChunkManager* Metaspace::_chunk_manager_metadata = NULL;
+ChunkManager* Metaspace::_chunk_manager_class = NULL;
+
 #define VIRTUALSPACEMULTIPLIER 2
 
 #ifdef _LP64
@@ -2981,6 +2932,7 @@ void Metaspace::initialize_class_space(ReservedSpace rs) {
          err_msg(SIZE_FORMAT " != " UINTX_FORMAT, rs.size(), CompressedClassSpaceSize));
   assert(using_class_space(), "Must be using class space");
   _class_space_list = new VirtualSpaceList(rs);
+  _chunk_manager_class = new ChunkManager(SpecializedChunk, ClassSmallChunk, ClassMediumChunk);
 }
 
 #endif
@@ -3006,6 +2958,7 @@ void Metaspace::global_initialize() {
     // remainder is the misc code and data chunks.
     cds_total = FileMapInfo::shared_spaces_size();
     _space_list = new VirtualSpaceList(cds_total/wordSize);
+    _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk);
 
 #ifdef _LP64
     // Set the compressed klass pointer base so that decoding of these pointers works
@@ -3073,15 +3026,30 @@ void Metaspace::global_initialize() {
     size_t word_size = VIRTUALSPACEMULTIPLIER * first_chunk_word_size();
     // Initialize the list of virtual spaces.
     _space_list = new VirtualSpaceList(word_size);
+    _chunk_manager_metadata = new ChunkManager(SpecializedChunk, SmallChunk, MediumChunk);
   }
 }
 
+Metachunk* Metaspace::get_initialization_chunk(MetadataType mdtype,
+                                               size_t chunk_word_size,
+                                               size_t chunk_bunch) {
+  // Get a chunk from the chunk freelist
+  Metachunk* chunk = get_chunk_manager(mdtype)->chunk_freelist_allocate(chunk_word_size);
+  if (chunk != NULL) {
+    return chunk;
+  }
+
+  return get_space_list(mdtype)->get_initialization_chunk(chunk_word_size, chunk_bunch);
+}
+
 void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
 
   assert(space_list() != NULL,
     "Metadata VirtualSpaceList has not been initialized");
+  assert(chunk_manager_metadata() != NULL,
+    "Metadata ChunkManager has not been initialized");
 
-  _vsm = new SpaceManager(NonClassType, lock, space_list());
+  _vsm = new SpaceManager(NonClassType, lock);
   if (_vsm == NULL) {
     return;
   }
@@ -3090,11 +3058,13 @@ void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
   vsm()->get_initial_chunk_sizes(type, &word_size, &class_word_size);
 
   if (using_class_space()) {
-    assert(class_space_list() != NULL,
-      "Class VirtualSpaceList has not been initialized");
+  assert(class_space_list() != NULL,
+    "Class VirtualSpaceList has not been initialized");
+  assert(chunk_manager_class() != NULL,
+    "Class ChunkManager has not been initialized");
 
     // Allocate SpaceManager for classes.
-    _class_vsm = new SpaceManager(ClassType, lock, class_space_list());
+    _class_vsm = new SpaceManager(ClassType, lock);
     if (_class_vsm == NULL) {
       return;
     }
@@ -3103,9 +3073,9 @@ void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
   MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag);
 
   // Allocate chunk for metadata objects
-  Metachunk* new_chunk =
-     space_list()->get_initialization_chunk(word_size,
-                                            vsm()->medium_chunk_bunch());
+  Metachunk* new_chunk = get_initialization_chunk(NonClassType,
+                                                  word_size,
+                                                  vsm()->medium_chunk_bunch());
   assert(!DumpSharedSpaces || new_chunk != NULL, "should have enough space for both chunks");
   if (new_chunk != NULL) {
     // Add to this manager's list of chunks in use and current_chunk().
@@ -3114,9 +3084,9 @@ void Metaspace::initialize(Mutex* lock, MetaspaceType type) {
 
   // Allocate chunk for class metadata objects
   if (using_class_space()) {
-    Metachunk* class_chunk =
-       class_space_list()->get_initialization_chunk(class_word_size,
-                                                    class_vsm()->medium_chunk_bunch());
+    Metachunk* class_chunk = get_initialization_chunk(ClassType,
+                                                      class_word_size,
+                                                      class_vsm()->medium_chunk_bunch());
     if (class_chunk != NULL) {
       class_vsm()->add_chunk(class_chunk, true);
     }
@@ -3333,12 +3303,16 @@ void Metaspace::iterate(Metaspace::AllocRecordClosure *closure) {
   }
 }
 
+void Metaspace::purge(MetadataType mdtype) {
+  get_space_list(mdtype)->purge(get_chunk_manager(mdtype));
+}
+
 void Metaspace::purge() {
   MutexLockerEx cl(SpaceManager::expand_lock(),
                    Mutex::_no_safepoint_check_flag);
-  space_list()->purge();
+  purge(NonClassType);
   if (using_class_space()) {
-    class_space_list()->purge();
+    purge(ClassType);
   }
 }
 
@@ -3385,7 +3359,7 @@ void Metaspace::dump(outputStream* const out) const {
 
 #ifndef PRODUCT
 
-class MetaspaceAuxTest : AllStatic {
+class TestMetaspaceAuxTest : AllStatic {
  public:
   static void test_reserved() {
     size_t reserved = MetaspaceAux::reserved_bytes();
@@ -3425,14 +3399,25 @@ class MetaspaceAuxTest : AllStatic {
     }
   }
 
+  static void test_virtual_space_list_large_chunk() {
+    VirtualSpaceList* vs_list = new VirtualSpaceList(os::vm_allocation_granularity());
+    MutexLockerEx cl(SpaceManager::expand_lock(), Mutex::_no_safepoint_check_flag);
+    // A size larger than VirtualSpaceSize (256k) and add one page to make it _not_ be
+    // vm_allocation_granularity aligned on Windows.
+    size_t large_size = (size_t)(2*256*K + (os::vm_page_size()/BytesPerWord));
+    large_size += (os::vm_page_size()/BytesPerWord);
+    vs_list->get_new_chunk(large_size, large_size, 0);
+  }
+
   static void test() {
     test_reserved();
     test_committed();
+    test_virtual_space_list_large_chunk();
   }
 };
 
-void MetaspaceAux_test() {
-  MetaspaceAuxTest::test();
+void TestMetaspaceAux_test() {
+  TestMetaspaceAuxTest::test();
 }
 
 #endif
diff --git a/src/share/vm/memory/metaspace.hpp b/src/share/vm/memory/metaspace.hpp
index 242fa61b1..29c07e151 100644
--- a/src/share/vm/memory/metaspace.hpp
+++ b/src/share/vm/memory/metaspace.hpp
@@ -56,12 +56,15 @@
 //                       +-------------------+
 //
 
+class ChunkManager;
 class ClassLoaderData;
 class Metablock;
+class Metachunk;
 class MetaWord;
 class Mutex;
 class outputStream;
 class SpaceManager;
+class VirtualSpaceList;
 
 // Metaspaces each have a  SpaceManager and allocations
 // are done by the SpaceManager.  Allocations are done
@@ -76,8 +79,6 @@ class SpaceManager;
 // allocate() method returns a block for use as a
 // quantum of metadata.
 
-class VirtualSpaceList;
-
 class Metaspace : public CHeapObj<mtClass> {
   friend class VMStructs;
   friend class SpaceManager;
@@ -102,6 +103,10 @@ class Metaspace : public CHeapObj<mtClass> {
  private:
   void initialize(Mutex* lock, MetaspaceType type);
 
+  Metachunk* get_initialization_chunk(MetadataType mdtype,
+                                      size_t chunk_word_size,
+                                      size_t chunk_bunch);
+
   // Align up the word size to the allocation word size
   static size_t align_word_size_up(size_t);
 
@@ -134,6 +139,10 @@ class Metaspace : public CHeapObj<mtClass> {
   static VirtualSpaceList* _space_list;
   static VirtualSpaceList* _class_space_list;
 
+  static ChunkManager* _chunk_manager_metadata;
+  static ChunkManager* _chunk_manager_class;
+
+ public:
   static VirtualSpaceList* space_list()       { return _space_list; }
   static VirtualSpaceList* class_space_list() { return _class_space_list; }
   static VirtualSpaceList* get_space_list(MetadataType mdtype) {
@@ -141,6 +150,14 @@ class Metaspace : public CHeapObj<mtClass> {
     return mdtype == ClassType ? class_space_list() : space_list();
   }
 
+  static ChunkManager* chunk_manager_metadata() { return _chunk_manager_metadata; }
+  static ChunkManager* chunk_manager_class()    { return _chunk_manager_class; }
+  static ChunkManager* get_chunk_manager(MetadataType mdtype) {
+    assert(mdtype != MetadataTypeCount, "MetadaTypeCount can't be used as mdtype");
+    return mdtype == ClassType ? chunk_manager_class() : chunk_manager_metadata();
+  }
+
+ private:
   // This is used by DumpSharedSpaces only, where only _vsm is used. So we will
   // maintain a single list for now.
   void record_allocation(void* ptr, MetaspaceObj::Type type, size_t word_size);
@@ -199,6 +216,7 @@ class Metaspace : public CHeapObj<mtClass> {
   void dump(outputStream* const out) const;
 
   // Free empty virtualspaces
+  static void purge(MetadataType mdtype);
   static void purge();
 
   void print_on(outputStream* st) const;
diff --git a/src/share/vm/memory/metaspaceShared.cpp b/src/share/vm/memory/metaspaceShared.cpp
index 2a9873957..ef51c9266 100644
--- a/src/share/vm/memory/metaspaceShared.cpp
+++ b/src/share/vm/memory/metaspaceShared.cpp
@@ -103,9 +103,10 @@ static void calculate_fingerprints() {
     if (k->oop_is_instance()) {
       InstanceKlass* ik = InstanceKlass::cast(k);
       for (int i = 0; i < ik->methods()->length(); i++) {
-        ResourceMark rm;
         Method* m = ik->methods()->at(i);
-        (new Fingerprinter(m))->fingerprint();
+        Fingerprinter fp(m);
+        // The side effect of this call sets method's fingerprint field.
+        fp.fingerprint();
       }
     }
   }
diff --git a/src/share/vm/oops/constantPool.cpp b/src/share/vm/oops/constantPool.cpp
index 673da4dd6..66493a879 100644
--- a/src/share/vm/oops/constantPool.cpp
+++ b/src/share/vm/oops/constantPool.cpp
@@ -108,16 +108,16 @@ objArrayOop ConstantPool::resolved_references() const {
 void ConstantPool::initialize_resolved_references(ClassLoaderData* loader_data,
                                                   intStack reference_map,
                                                   int constant_pool_map_length,
-                                                   TRAPS) {
+                                                  TRAPS) {
   // Initialized the resolved object cache.
   int map_length = reference_map.length();
   if (map_length > 0) {
     // Only need mapping back to constant pool entries.  The map isn't used for
-    // invokedynamic resolved_reference entries.  The constant pool cache index
-    // has the mapping back to both the constant pool and to the resolved
-    // reference index.
+    // invokedynamic resolved_reference entries.  For invokedynamic entries,
+    // the constant pool cache index has the mapping back to both the constant
+    // pool and to the resolved reference index.
     if (constant_pool_map_length > 0) {
-      Array<u2>* om = MetadataFactory::new_array<u2>(loader_data, map_length, CHECK);
+      Array<u2>* om = MetadataFactory::new_array<u2>(loader_data, constant_pool_map_length, CHECK);
 
       for (int i = 0; i < constant_pool_map_length; i++) {
         int x = reference_map.at(i);
@@ -182,16 +182,9 @@ oop ConstantPool::lock() {
 
 int ConstantPool::cp_to_object_index(int cp_index) {
   // this is harder don't do this so much.
-  for (int i = 0; i< reference_map()->length(); i++) {
-    if (reference_map()->at(i) == cp_index) return i;
-    // Zero entry is divider between constant pool indices for strings,
-    // method handles and method types. After that the index is a constant
-    // pool cache index for invokedynamic.  Stop when zero (which can never
-    // be a constant pool index)
-    if (reference_map()->at(i) == 0) break;
-  }
-  // We might not find the index.
-  return _no_index_sentinel;
+  int i = reference_map()->find(cp_index);
+  // We might not find the index for jsr292 call.
+  return (i < 0) ? _no_index_sentinel : i;
 }
 
 Klass* ConstantPool::klass_at_impl(constantPoolHandle this_oop, int which, TRAPS) {
@@ -840,8 +833,7 @@ oop ConstantPool::string_at_impl(constantPoolHandle this_oop, int which, int obj
   // If the string has already been interned, this entry will be non-null
   oop str = this_oop->resolved_references()->obj_at(obj_index);
   if (str != NULL) return str;
-
-      Symbol* sym = this_oop->unresolved_string_at(which);
+  Symbol* sym = this_oop->unresolved_string_at(which);
   str = StringTable::intern(sym, CHECK_(NULL));
   this_oop->string_at_put(which, obj_index, str);
   assert(java_lang_String::is_instance(str), "must be string");
@@ -1619,9 +1611,11 @@ jint ConstantPool::cpool_entry_size(jint idx) {
     case JVM_CONSTANT_UnresolvedClassInError:
     case JVM_CONSTANT_StringIndex:
     case JVM_CONSTANT_MethodType:
+    case JVM_CONSTANT_MethodTypeInError:
       return 3;
 
     case JVM_CONSTANT_MethodHandle:
+    case JVM_CONSTANT_MethodHandleInError:
       return 4; //tag, ref_kind, ref_index
 
     case JVM_CONSTANT_Integer:
@@ -1802,8 +1796,8 @@ int ConstantPool::copy_cpool_bytes(int cpool_size,
       case JVM_CONSTANT_MethodHandle:
       case JVM_CONSTANT_MethodHandleInError: {
         *bytes = JVM_CONSTANT_MethodHandle;
-        int kind = method_handle_ref_kind_at(idx);
-        idx1 = method_handle_index_at(idx);
+        int kind = method_handle_ref_kind_at_error_ok(idx);
+        idx1 = method_handle_index_at_error_ok(idx);
         *(bytes+1) = (unsigned char) kind;
         Bytes::put_Java_u2((address) (bytes+2), idx1);
         DBG(printf("JVM_CONSTANT_MethodHandle: %d %hd", kind, idx1));
@@ -1812,7 +1806,7 @@ int ConstantPool::copy_cpool_bytes(int cpool_size,
       case JVM_CONSTANT_MethodType:
       case JVM_CONSTANT_MethodTypeInError: {
         *bytes = JVM_CONSTANT_MethodType;
-        idx1 = method_type_index_at(idx);
+        idx1 = method_type_index_at_error_ok(idx);
         Bytes::put_Java_u2((address) (bytes+1), idx1);
         DBG(printf("JVM_CONSTANT_MethodType: %hd", idx1));
         break;
@@ -2000,12 +1994,12 @@ void ConstantPool::print_entry_on(const int index, outputStream* st) {
       break;
     case JVM_CONSTANT_MethodHandle :
     case JVM_CONSTANT_MethodHandleInError :
-      st->print("ref_kind=%d", method_handle_ref_kind_at(index));
-      st->print(" ref_index=%d", method_handle_index_at(index));
+      st->print("ref_kind=%d", method_handle_ref_kind_at_error_ok(index));
+      st->print(" ref_index=%d", method_handle_index_at_error_ok(index));
       break;
     case JVM_CONSTANT_MethodType :
     case JVM_CONSTANT_MethodTypeInError :
-      st->print("signature_index=%d", method_type_index_at(index));
+      st->print("signature_index=%d", method_type_index_at_error_ok(index));
       break;
     case JVM_CONSTANT_InvokeDynamic :
       {
diff --git a/src/share/vm/oops/constantPool.hpp b/src/share/vm/oops/constantPool.hpp
index b7d607d76..47a51a835 100644
--- a/src/share/vm/oops/constantPool.hpp
+++ b/src/share/vm/oops/constantPool.hpp
@@ -231,7 +231,6 @@ class ConstantPool : public Metadata {
   static int cache_offset_in_bytes()        { return offset_of(ConstantPool, _cache); }
   static int pool_holder_offset_in_bytes()  { return offset_of(ConstantPool, _pool_holder); }
   static int resolved_references_offset_in_bytes() { return offset_of(ConstantPool, _resolved_references); }
-  static int reference_map_offset_in_bytes() { return offset_of(ConstantPool, _reference_map); }
 
   // Storing constants
 
@@ -475,18 +474,42 @@ class ConstantPool : public Metadata {
     return *int_at_addr(which);
   }
 
-  int method_handle_ref_kind_at(int which) {
-    assert(tag_at(which).is_method_handle(), "Corrupted constant pool");
+ private:
+  int method_handle_ref_kind_at(int which, bool error_ok) {
+    assert(tag_at(which).is_method_handle() ||
+           (error_ok && tag_at(which).is_method_handle_in_error()), "Corrupted constant pool");
     return extract_low_short_from_int(*int_at_addr(which));  // mask out unwanted ref_index bits
   }
-  int method_handle_index_at(int which) {
-    assert(tag_at(which).is_method_handle(), "Corrupted constant pool");
+  int method_handle_index_at(int which, bool error_ok) {
+    assert(tag_at(which).is_method_handle() ||
+           (error_ok && tag_at(which).is_method_handle_in_error()), "Corrupted constant pool");
     return extract_high_short_from_int(*int_at_addr(which));  // shift out unwanted ref_kind bits
   }
-  int method_type_index_at(int which) {
-    assert(tag_at(which).is_method_type(), "Corrupted constant pool");
+  int method_type_index_at(int which, bool error_ok) {
+    assert(tag_at(which).is_method_type() ||
+           (error_ok && tag_at(which).is_method_type_in_error()), "Corrupted constant pool");
     return *int_at_addr(which);
   }
+ public:
+  int method_handle_ref_kind_at(int which) {
+    return method_handle_ref_kind_at(which, false);
+  }
+  int method_handle_ref_kind_at_error_ok(int which) {
+    return method_handle_ref_kind_at(which, true);
+  }
+  int method_handle_index_at(int which) {
+    return method_handle_index_at(which, false);
+  }
+  int method_handle_index_at_error_ok(int which) {
+    return method_handle_index_at(which, true);
+  }
+  int method_type_index_at(int which) {
+    return method_type_index_at(which, false);
+  }
+  int method_type_index_at_error_ok(int which) {
+    return method_type_index_at(which, true);
+  }
+
   // Derived queries:
   Symbol* method_handle_name_ref_at(int which) {
     int member = method_handle_index_at(which);
diff --git a/src/share/vm/oops/instanceKlass.cpp b/src/share/vm/oops/instanceKlass.cpp
index cf77300dc..e56e80664 100644
--- a/src/share/vm/oops/instanceKlass.cpp
+++ b/src/share/vm/oops/instanceKlass.cpp
@@ -2769,24 +2769,17 @@ void InstanceKlass::print_on(outputStream* st) const {
   st->print(BULLET"field annotations:       "); fields_annotations()->print_value_on(st); st->cr();
   st->print(BULLET"field type annotations:  "); fields_type_annotations()->print_value_on(st); st->cr();
   {
-    ResourceMark rm;
-    // PreviousVersionInfo objects returned via PreviousVersionWalker
-    // contain a GrowableArray of handles. We have to clean up the
-    // GrowableArray _after_ the PreviousVersionWalker destructor
-    // has destroyed the handles.
-    {
-      bool have_pv = false;
-      PreviousVersionWalker pvw((InstanceKlass*)this);
-      for (PreviousVersionInfo * pv_info = pvw.next_previous_version();
-           pv_info != NULL; pv_info = pvw.next_previous_version()) {
-        if (!have_pv)
-          st->print(BULLET"previous version:  ");
-        have_pv = true;
-        pv_info->prev_constant_pool_handle()()->print_value_on(st);
-      }
-      if (have_pv)  st->cr();
-    } // pvw is cleaned up
-  } // rm is cleaned up
+    bool have_pv = false;
+    PreviousVersionWalker pvw(Thread::current(), (InstanceKlass*)this);
+    for (PreviousVersionNode * pv_node = pvw.next_previous_version();
+         pv_node != NULL; pv_node = pvw.next_previous_version()) {
+      if (!have_pv)
+        st->print(BULLET"previous version:  ");
+      have_pv = true;
+      pv_node->prev_constant_pool()->print_value_on(st);
+    }
+    if (have_pv) st->cr();
+  } // pvw is cleaned up
 
   if (generic_signature() != NULL) {
     st->print(BULLET"generic signature: ");
@@ -3317,34 +3310,34 @@ void InstanceKlass::add_previous_version(instanceKlassHandle ikh,
   Array<Method*>* old_methods = ikh->methods();
 
   if (cp_ref->on_stack()) {
-  PreviousVersionNode * pv_node = NULL;
-  if (emcp_method_count == 0) {
+    PreviousVersionNode * pv_node = NULL;
+    if (emcp_method_count == 0) {
       // non-shared ConstantPool gets a reference
-      pv_node = new PreviousVersionNode(cp_ref, !cp_ref->is_shared(), NULL);
-    RC_TRACE(0x00000400,
-        ("add: all methods are obsolete; flushing any EMCP refs"));
-  } else {
-    int local_count = 0;
+      pv_node = new PreviousVersionNode(cp_ref, NULL);
+      RC_TRACE(0x00000400,
+          ("add: all methods are obsolete; flushing any EMCP refs"));
+    } else {
+      int local_count = 0;
       GrowableArray<Method*>* method_refs = new (ResourceObj::C_HEAP, mtClass)
-        GrowableArray<Method*>(emcp_method_count, true);
-    for (int i = 0; i < old_methods->length(); i++) {
-      if (emcp_methods->at(i)) {
-          // this old method is EMCP. Save it only if it's on the stack
-          Method* old_method = old_methods->at(i);
-          if (old_method->on_stack()) {
-            method_refs->append(old_method);
+          GrowableArray<Method*>(emcp_method_count, true);
+      for (int i = 0; i < old_methods->length(); i++) {
+        if (emcp_methods->at(i)) {
+            // this old method is EMCP. Save it only if it's on the stack
+            Method* old_method = old_methods->at(i);
+            if (old_method->on_stack()) {
+              method_refs->append(old_method);
+            }
+          if (++local_count >= emcp_method_count) {
+            // no more EMCP methods so bail out now
+            break;
           }
-        if (++local_count >= emcp_method_count) {
-          // no more EMCP methods so bail out now
-          break;
         }
       }
-    }
       // non-shared ConstantPool gets a reference
-      pv_node = new PreviousVersionNode(cp_ref, !cp_ref->is_shared(), method_refs);
+      pv_node = new PreviousVersionNode(cp_ref, method_refs);
     }
     // append new previous version.
-  _previous_versions->append(pv_node);
+    _previous_versions->append(pv_node);
   }
 
   // Since the caller is the VMThread and we are at a safepoint, this
@@ -3445,6 +3438,8 @@ Method* InstanceKlass::method_with_idnum(int idnum) {
         return m;
       }
     }
+    // None found, return null for the caller to handle.
+    return NULL;
   }
   return m;
 }
@@ -3461,10 +3456,9 @@ unsigned char * InstanceKlass::get_cached_class_file_bytes() {
 // Construct a PreviousVersionNode entry for the array hung off
 // the InstanceKlass.
 PreviousVersionNode::PreviousVersionNode(ConstantPool* prev_constant_pool,
-  bool prev_cp_is_weak, GrowableArray<Method*>* prev_EMCP_methods) {
+  GrowableArray<Method*>* prev_EMCP_methods) {
 
   _prev_constant_pool = prev_constant_pool;
-  _prev_cp_is_weak = prev_cp_is_weak;
   _prev_EMCP_methods = prev_EMCP_methods;
 }
 
@@ -3480,99 +3474,38 @@ PreviousVersionNode::~PreviousVersionNode() {
   }
 }
 
-
-// Construct a PreviousVersionInfo entry
-PreviousVersionInfo::PreviousVersionInfo(PreviousVersionNode *pv_node) {
-  _prev_constant_pool_handle = constantPoolHandle();  // NULL handle
-  _prev_EMCP_method_handles = NULL;
-
-  ConstantPool* cp = pv_node->prev_constant_pool();
-  assert(cp != NULL, "constant pool ref was unexpectedly cleared");
-  if (cp == NULL) {
-    return;  // robustness
-  }
-
-  // make the ConstantPool* safe to return
-  _prev_constant_pool_handle = constantPoolHandle(cp);
-
-  GrowableArray<Method*>* method_refs = pv_node->prev_EMCP_methods();
-  if (method_refs == NULL) {
-    // the InstanceKlass did not have any EMCP methods
-    return;
-  }
-
-  _prev_EMCP_method_handles = new GrowableArray<methodHandle>(10);
-
-  int n_methods = method_refs->length();
-  for (int i = 0; i < n_methods; i++) {
-    Method* method = method_refs->at(i);
-    assert (method != NULL, "method has been cleared");
-    if (method == NULL) {
-      continue;  // robustness
-    }
-    // make the Method* safe to return
-    _prev_EMCP_method_handles->append(methodHandle(method));
-  }
-}
-
-
-// Destroy a PreviousVersionInfo
-PreviousVersionInfo::~PreviousVersionInfo() {
-  // Since _prev_EMCP_method_handles is not C-heap allocated, we
-  // don't have to delete it.
-}
-
-
 // Construct a helper for walking the previous versions array
-PreviousVersionWalker::PreviousVersionWalker(InstanceKlass *ik) {
+PreviousVersionWalker::PreviousVersionWalker(Thread* thread, InstanceKlass *ik) {
+  _thread = thread;
   _previous_versions = ik->previous_versions();
   _current_index = 0;
-  // _hm needs no initialization
   _current_p = NULL;
-}
-
-
-// Destroy a PreviousVersionWalker
-PreviousVersionWalker::~PreviousVersionWalker() {
-  // Delete the current info just in case the caller didn't walk to
-  // the end of the previous versions list. No harm if _current_p is
-  // already NULL.
-  delete _current_p;
-
-  // When _hm is destroyed, all the Handles returned in
-  // PreviousVersionInfo objects will be destroyed.
-  // Also, after this destructor is finished it will be
-  // safe to delete the GrowableArray allocated in the
-  // PreviousVersionInfo objects.
+  _current_constant_pool_handle = constantPoolHandle(thread, ik->constants());
 }
 
 
 // Return the interesting information for the next previous version
 // of the klass. Returns NULL if there are no more previous versions.
-PreviousVersionInfo* PreviousVersionWalker::next_previous_version() {
+PreviousVersionNode* PreviousVersionWalker::next_previous_version() {
   if (_previous_versions == NULL) {
     // no previous versions so nothing to return
     return NULL;
   }
 
-  delete _current_p;  // cleanup the previous info for the caller
-  _current_p = NULL;  // reset to NULL so we don't delete same object twice
+  _current_p = NULL;  // reset to NULL
+  _current_constant_pool_handle = NULL;
 
   int length = _previous_versions->length();
 
   while (_current_index < length) {
     PreviousVersionNode * pv_node = _previous_versions->at(_current_index++);
-    PreviousVersionInfo * pv_info = new (ResourceObj::C_HEAP, mtClass)
-                                          PreviousVersionInfo(pv_node);
-
-    constantPoolHandle cp_h = pv_info->prev_constant_pool_handle();
-    assert (!cp_h.is_null(), "null cp found in previous version");
 
-    // The caller will need to delete pv_info when they are done with it.
-    _current_p = pv_info;
-    return pv_info;
+    // Save a handle to the constant pool for this previous version,
+    // which keeps all the methods from being deallocated.
+    _current_constant_pool_handle = constantPoolHandle(_thread, pv_node->prev_constant_pool());
+    _current_p = pv_node;
+    return pv_node;
   }
 
-  // all of the underlying nodes' info has been deleted
   return NULL;
 } // end next_previous_version()
diff --git a/src/share/vm/oops/instanceKlass.hpp b/src/share/vm/oops/instanceKlass.hpp
index 3bd4e9de4..c3745ee24 100644
--- a/src/share/vm/oops/instanceKlass.hpp
+++ b/src/share/vm/oops/instanceKlass.hpp
@@ -1126,21 +1126,11 @@ class BreakpointInfo;
 
 
 // A collection point for interesting information about the previous
-// version(s) of an InstanceKlass. This class uses weak references to
-// the information so that the information may be collected as needed
-// by the system. If the information is shared, then a regular
-// reference must be used because a weak reference would be seen as
-// collectible. A GrowableArray of PreviousVersionNodes is attached
-// to the InstanceKlass as needed. See PreviousVersionWalker below.
+// version(s) of an InstanceKlass.  A GrowableArray of PreviousVersionNodes
+// is attached to the InstanceKlass as needed. See PreviousVersionWalker below.
 class PreviousVersionNode : public CHeapObj<mtClass> {
  private:
-  // A shared ConstantPool is never collected so we'll always have
-  // a reference to it so we can update items in the cache. We'll
-  // have a weak reference to a non-shared ConstantPool until all
-  // of the methods (EMCP or obsolete) have been collected; the
-  // non-shared ConstantPool becomes collectible at that point.
-  ConstantPool*    _prev_constant_pool;  // regular or weak reference
-  bool    _prev_cp_is_weak;     // true if not a shared ConstantPool
+  ConstantPool*    _prev_constant_pool;
 
   // If the previous version of the InstanceKlass doesn't have any
   // EMCP methods, then _prev_EMCP_methods will be NULL. If all the
@@ -1149,8 +1139,8 @@ class PreviousVersionNode : public CHeapObj<mtClass> {
   GrowableArray<Method*>* _prev_EMCP_methods;
 
 public:
-  PreviousVersionNode(ConstantPool* prev_constant_pool, bool prev_cp_is_weak,
-    GrowableArray<Method*>* prev_EMCP_methods);
+  PreviousVersionNode(ConstantPool* prev_constant_pool,
+                      GrowableArray<Method*>* prev_EMCP_methods);
   ~PreviousVersionNode();
   ConstantPool* prev_constant_pool() const {
     return _prev_constant_pool;
@@ -1161,59 +1151,26 @@ public:
 };
 
 
-// A Handle-ized version of PreviousVersionNode.
-class PreviousVersionInfo : public ResourceObj {
- private:
-  constantPoolHandle   _prev_constant_pool_handle;
-  // If the previous version of the InstanceKlass doesn't have any
-  // EMCP methods, then _prev_EMCP_methods will be NULL. Since the
-  // methods cannot be collected while we hold a handle,
-  // _prev_EMCP_methods should never have a length of zero.
-  GrowableArray<methodHandle>* _prev_EMCP_method_handles;
-
-public:
-  PreviousVersionInfo(PreviousVersionNode *pv_node);
-  ~PreviousVersionInfo();
-  constantPoolHandle prev_constant_pool_handle() const {
-    return _prev_constant_pool_handle;
-  }
-  GrowableArray<methodHandle>* prev_EMCP_method_handles() const {
-    return _prev_EMCP_method_handles;
-  }
-};
-
-
-// Helper object for walking previous versions. This helper cleans up
-// the Handles that it allocates when the helper object is destroyed.
-// The PreviousVersionInfo object returned by next_previous_version()
-// is only valid until a subsequent call to next_previous_version() or
-// the helper object is destroyed.
+// Helper object for walking previous versions.
 class PreviousVersionWalker : public StackObj {
  private:
+  Thread*                               _thread;
   GrowableArray<PreviousVersionNode *>* _previous_versions;
   int                                   _current_index;
-  // Fields for cleaning up when we are done walking the previous versions:
-  // A HandleMark for the PreviousVersionInfo handles:
-  HandleMark                            _hm;
 
-  // It would be nice to have a ResourceMark field in this helper also,
-  // but the ResourceMark code says to be careful to delete handles held
-  // in GrowableArrays _before_ deleting the GrowableArray. Since we
-  // can't guarantee the order in which the fields are destroyed, we
-  // have to let the creator of the PreviousVersionWalker object do
-  // the right thing. Also, adding a ResourceMark here causes an
-  // include loop.
+  // A pointer to the current node object so we can handle the deletes.
+  PreviousVersionNode*                  _current_p;
 
-  // A pointer to the current info object so we can handle the deletes.
-  PreviousVersionInfo *                 _current_p;
+  // The constant pool handle keeps all the methods in this class from being
+  // deallocated from the metaspace during class unloading.
+  constantPoolHandle                    _current_constant_pool_handle;
 
  public:
-  PreviousVersionWalker(InstanceKlass *ik);
-  ~PreviousVersionWalker();
+  PreviousVersionWalker(Thread* thread, InstanceKlass *ik);
 
   // Return the interesting information for the next previous version
   // of the klass. Returns NULL if there are no more previous versions.
-  PreviousVersionInfo* next_previous_version();
+  PreviousVersionNode* next_previous_version();
 };
 
 
diff --git a/src/share/vm/opto/bytecodeInfo.cpp b/src/share/vm/opto/bytecodeInfo.cpp
index 45ba8d758..2ba7b1cf3 100644
--- a/src/share/vm/opto/bytecodeInfo.cpp
+++ b/src/share/vm/opto/bytecodeInfo.cpp
@@ -123,7 +123,7 @@ bool InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_method,
   // Allows targeted inlining
   if(callee_method->should_inline()) {
     *wci_result = *(WarmCallInfo::always_hot());
-    if (PrintInlining && Verbose) {
+    if (C->print_inlining() && Verbose) {
       CompileTask::print_inline_indent(inline_level());
       tty->print_cr("Inlined method is hot: ");
     }
@@ -137,7 +137,7 @@ bool InlineTree::should_inline(ciMethod* callee_method, ciMethod* caller_method,
   if(callee_method->interpreter_throwout_count() > InlineThrowCount &&
      size < InlineThrowMaxSize ) {
     wci_result->set_profit(wci_result->profit() * 100);
-    if (PrintInlining && Verbose) {
+    if (C->print_inlining() && Verbose) {
       CompileTask::print_inline_indent(inline_level());
       tty->print_cr("Inlined method with many throws (throws=%d):", callee_method->interpreter_throwout_count());
     }
@@ -491,7 +491,7 @@ void InlineTree::print_inlining(ciMethod* callee_method, int caller_bci,
       C->log()->inline_fail(inline_msg);
     }
   }
-  if (PrintInlining) {
+  if (C->print_inlining()) {
     C->print_inlining(callee_method, inline_level(), caller_bci, inline_msg);
     if (callee_method == NULL) tty->print(" callee not monotonic or profiled");
     if (Verbose && callee_method) {
@@ -540,7 +540,7 @@ WarmCallInfo* InlineTree::ok_to_inline(ciMethod* callee_method, JVMState* jvms,
 
 #ifndef PRODUCT
   if (UseOldInlining && InlineWarmCalls
-      && (PrintOpto || PrintOptoInlining || PrintInlining)) {
+      && (PrintOpto || C->print_inlining())) {
     bool cold = wci.is_cold();
     bool hot  = !cold && wci.is_hot();
     bool old_cold = !success;
@@ -617,7 +617,7 @@ InlineTree *InlineTree::build_inline_tree_for_callee( ciMethod* callee_method, J
              callee_method->is_compiled_lambda_form()) {
       max_inline_level_adjust += 1;  // don't count method handle calls from java.lang.invoke implem
     }
-    if (max_inline_level_adjust != 0 && PrintInlining && (Verbose || WizardMode)) {
+    if (max_inline_level_adjust != 0 && C->print_inlining() && (Verbose || WizardMode)) {
       CompileTask::print_inline_indent(inline_level());
       tty->print_cr(" \\-> discounting inline depth");
     }
diff --git a/src/share/vm/opto/callGenerator.hpp b/src/share/vm/opto/callGenerator.hpp
index 0f6b2d165..a1616de4d 100644
--- a/src/share/vm/opto/callGenerator.hpp
+++ b/src/share/vm/opto/callGenerator.hpp
@@ -159,8 +159,9 @@ class CallGenerator : public ResourceObj {
   virtual void print_inlining_late(const char* msg) { ShouldNotReachHere(); }
 
   static void print_inlining(Compile* C, ciMethod* callee, int inline_level, int bci, const char* msg) {
-    if (PrintInlining)
+    if (C->print_inlining()) {
       C->print_inlining(callee, inline_level, bci, msg);
+    }
   }
 };
 
diff --git a/src/share/vm/opto/compile.cpp b/src/share/vm/opto/compile.cpp
index 1c625d679..0fed4e06c 100644
--- a/src/share/vm/opto/compile.cpp
+++ b/src/share/vm/opto/compile.cpp
@@ -654,7 +654,7 @@ Compile::Compile( ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, int osr
                   _inlining_progress(false),
                   _inlining_incrementally(false),
                   _print_inlining_list(NULL),
-                  _print_inlining(0) {
+                  _print_inlining_idx(0) {
   C = this;
 
   CompileWrapper cw(this);
@@ -679,6 +679,8 @@ Compile::Compile( ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, int osr
   set_print_assembly(print_opto_assembly);
   set_parsed_irreducible_loop(false);
 #endif
+  set_print_inlining(PrintInlining || method()->has_option("PrintInlining") NOT_PRODUCT( || PrintOptoInlining));
+  set_print_intrinsics(PrintIntrinsics || method()->has_option("PrintIntrinsics"));
 
   if (ProfileTraps) {
     // Make sure the method being compiled gets its own MDO,
@@ -710,7 +712,7 @@ Compile::Compile( ciEnv* ci_env, C2Compiler* compiler, ciMethod* target, int osr
   PhaseGVN gvn(node_arena(), estimated_size);
   set_initial_gvn(&gvn);
 
-  if (PrintInlining  || PrintIntrinsics NOT_PRODUCT( || PrintOptoInlining)) {
+  if (print_inlining() || print_intrinsics()) {
     _print_inlining_list = new (comp_arena())GrowableArray<PrintInliningBuffer>(comp_arena(), 1, 1, PrintInliningBuffer());
   }
   { // Scope for timing the parser
@@ -937,7 +939,7 @@ Compile::Compile( ciEnv* ci_env,
     _inlining_progress(false),
     _inlining_incrementally(false),
     _print_inlining_list(NULL),
-    _print_inlining(0) {
+    _print_inlining_idx(0) {
   C = this;
 
 #ifndef PRODUCT
@@ -3611,7 +3613,7 @@ void Compile::ConstantTable::fill_jump_table(CodeBuffer& cb, MachConstantNode* n
 }
 
 void Compile::dump_inlining() {
-  if (PrintInlining || PrintIntrinsics NOT_PRODUCT( || PrintOptoInlining)) {
+  if (print_inlining() || print_intrinsics()) {
     // Print inlining message for candidates that we couldn't inline
     // for lack of space or non constant receiver
     for (int i = 0; i < _late_inlines.length(); i++) {
@@ -3635,7 +3637,7 @@ void Compile::dump_inlining() {
       }
     }
     for (int i = 0; i < _print_inlining_list->length(); i++) {
-      tty->print(_print_inlining_list->at(i).ss()->as_string());
+      tty->print(_print_inlining_list->adr_at(i)->ss()->as_string());
     }
   }
 }
diff --git a/src/share/vm/opto/compile.hpp b/src/share/vm/opto/compile.hpp
index 8d862c241..631372efa 100644
--- a/src/share/vm/opto/compile.hpp
+++ b/src/share/vm/opto/compile.hpp
@@ -312,6 +312,8 @@ class Compile : public Phase {
   bool                  _do_method_data_update; // True if we generate code to update MethodData*s
   int                   _AliasLevel;            // Locally-adjusted version of AliasLevel flag.
   bool                  _print_assembly;        // True if we should dump assembly code for this compilation
+  bool                  _print_inlining;        // True if we should print inlining for this compilation
+  bool                  _print_intrinsics;      // True if we should print intrinsics for this compilation
 #ifndef PRODUCT
   bool                  _trace_opto_output;
   bool                  _parsed_irreducible_loop; // True if ciTypeFlow detected irreducible loops during parsing
@@ -414,7 +416,7 @@ class Compile : public Phase {
   };
 
   GrowableArray<PrintInliningBuffer>* _print_inlining_list;
-  int _print_inlining;
+  int _print_inlining_idx;
 
   // Only keep nodes in the expensive node list that need to be optimized
   void cleanup_expensive_nodes(PhaseIterGVN &igvn);
@@ -426,24 +428,24 @@ class Compile : public Phase {
  public:
 
   outputStream* print_inlining_stream() const {
-    return _print_inlining_list->at(_print_inlining).ss();
+    return _print_inlining_list->adr_at(_print_inlining_idx)->ss();
   }
 
   void print_inlining_skip(CallGenerator* cg) {
-    if (PrintInlining) {
-      _print_inlining_list->at(_print_inlining).set_cg(cg);
-      _print_inlining++;
-      _print_inlining_list->insert_before(_print_inlining, PrintInliningBuffer());
+    if (_print_inlining) {
+      _print_inlining_list->adr_at(_print_inlining_idx)->set_cg(cg);
+      _print_inlining_idx++;
+      _print_inlining_list->insert_before(_print_inlining_idx, PrintInliningBuffer());
     }
   }
 
   void print_inlining_insert(CallGenerator* cg) {
-    if (PrintInlining) {
+    if (_print_inlining) {
       for (int i = 0; i < _print_inlining_list->length(); i++) {
-        if (_print_inlining_list->at(i).cg() == cg) {
+        if (_print_inlining_list->adr_at(i)->cg() == cg) {
           _print_inlining_list->insert_before(i+1, PrintInliningBuffer());
-          _print_inlining = i+1;
-          _print_inlining_list->at(i).set_cg(NULL);
+          _print_inlining_idx = i+1;
+          _print_inlining_list->adr_at(i)->set_cg(NULL);
           return;
         }
       }
@@ -572,6 +574,10 @@ class Compile : public Phase {
   int               AliasLevel() const          { return _AliasLevel; }
   bool              print_assembly() const       { return _print_assembly; }
   void          set_print_assembly(bool z)       { _print_assembly = z; }
+  bool              print_inlining() const       { return _print_inlining; }
+  void          set_print_inlining(bool z)       { _print_inlining = z; }
+  bool              print_intrinsics() const     { return _print_intrinsics; }
+  void          set_print_intrinsics(bool z)     { _print_intrinsics = z; }
   // check the CompilerOracle for special behaviours for this compile
   bool          method_has_option(const char * option) {
     return method() != NULL && method()->has_option(option);
diff --git a/src/share/vm/opto/doCall.cpp b/src/share/vm/opto/doCall.cpp
index e55a01ba6..8784bbe2d 100644
--- a/src/share/vm/opto/doCall.cpp
+++ b/src/share/vm/opto/doCall.cpp
@@ -41,9 +41,9 @@
 #include "runtime/sharedRuntime.hpp"
 
 void trace_type_profile(Compile* C, ciMethod *method, int depth, int bci, ciMethod *prof_method, ciKlass *prof_klass, int site_count, int receiver_count) {
-  if (TraceTypeProfile || PrintInlining NOT_PRODUCT(|| PrintOptoInlining)) {
+  if (TraceTypeProfile || C->print_inlining()) {
     outputStream* out = tty;
-    if (!PrintInlining) {
+    if (!C->print_inlining()) {
       if (NOT_PRODUCT(!PrintOpto &&) !PrintCompilation) {
         method->print_short_name();
         tty->cr();
diff --git a/src/share/vm/opto/library_call.cpp b/src/share/vm/opto/library_call.cpp
index 2bfa25fa9..902ed5919 100644
--- a/src/share/vm/opto/library_call.cpp
+++ b/src/share/vm/opto/library_call.cpp
@@ -543,7 +543,7 @@ JVMState* LibraryIntrinsic::generate(JVMState* jvms) {
   Compile* C = kit.C;
   int nodes = C->unique();
 #ifndef PRODUCT
-  if ((PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) && Verbose) {
+  if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
     char buf[1000];
     const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf));
     tty->print_cr("Intrinsic %s", str);
@@ -554,7 +554,7 @@ JVMState* LibraryIntrinsic::generate(JVMState* jvms) {
 
   // Try to inline the intrinsic.
   if (kit.try_to_inline()) {
-    if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) {
+    if (C->print_intrinsics() || C->print_inlining()) {
       C->print_inlining(callee, jvms->depth() - 1, bci, is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)");
     }
     C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked);
@@ -570,7 +570,7 @@ JVMState* LibraryIntrinsic::generate(JVMState* jvms) {
   }
 
   // The intrinsic bailed out
-  if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) {
+  if (C->print_intrinsics() || C->print_inlining()) {
     if (jvms->has_method()) {
       // Not a root compile.
       const char* msg = is_virtual() ? "failed to inline (intrinsic, virtual)" : "failed to inline (intrinsic)";
@@ -592,7 +592,7 @@ Node* LibraryIntrinsic::generate_predicate(JVMState* jvms) {
   int nodes = C->unique();
 #ifndef PRODUCT
   assert(is_predicted(), "sanity");
-  if ((PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) && Verbose) {
+  if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
     char buf[1000];
     const char* str = vmIntrinsics::short_name_as_C_string(intrinsic_id(), buf, sizeof(buf));
     tty->print_cr("Predicate for intrinsic %s", str);
@@ -603,7 +603,7 @@ Node* LibraryIntrinsic::generate_predicate(JVMState* jvms) {
 
   Node* slow_ctl = kit.try_to_predicate();
   if (!kit.failing()) {
-    if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) {
+    if (C->print_intrinsics() || C->print_inlining()) {
       C->print_inlining(callee, jvms->depth() - 1, bci, is_virtual() ? "(intrinsic, virtual)" : "(intrinsic)");
     }
     C->gather_intrinsic_statistics(intrinsic_id(), is_virtual(), Compile::_intrinsic_worked);
@@ -617,7 +617,7 @@ Node* LibraryIntrinsic::generate_predicate(JVMState* jvms) {
   }
 
   // The intrinsic bailed out
-  if (PrintIntrinsics || PrintInlining NOT_PRODUCT( || PrintOptoInlining) ) {
+  if (C->print_intrinsics() || C->print_inlining()) {
     if (jvms->has_method()) {
       // Not a root compile.
       const char* msg = "failed to generate predicate for intrinsic";
@@ -2299,7 +2299,7 @@ const TypeOopPtr* LibraryCallKit::sharpen_unsafe_type(Compile::AliasType* alias_
     const TypeOopPtr* tjp = TypeOopPtr::make_from_klass(sharpened_klass);
 
 #ifndef PRODUCT
-    if (PrintIntrinsics || PrintInlining || PrintOptoInlining) {
+    if (C->print_intrinsics() || C->print_inlining()) {
       tty->print("  from base type: ");  adr_type->dump();
       tty->print("  sharpened value: ");  tjp->dump();
     }
@@ -3260,7 +3260,7 @@ bool LibraryCallKit::inline_native_Class_query(vmIntrinsics::ID id) {
   if (mirror_con == NULL)  return false;  // cannot happen?
 
 #ifndef PRODUCT
-  if (PrintIntrinsics || PrintInlining || PrintOptoInlining) {
+  if (C->print_intrinsics() || C->print_inlining()) {
     ciType* k = mirror_con->java_mirror_type();
     if (k) {
       tty->print("Inlining %s on constant Class ", vmIntrinsics::name_at(intrinsic_id()));
@@ -3952,14 +3952,14 @@ bool LibraryCallKit::inline_native_getClass() {
 // caller sensitive methods.
 bool LibraryCallKit::inline_native_Reflection_getCallerClass() {
 #ifndef PRODUCT
-  if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) {
+  if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
     tty->print_cr("Attempting to inline sun.reflect.Reflection.getCallerClass");
   }
 #endif
 
   if (!jvms()->has_method()) {
 #ifndef PRODUCT
-    if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) {
+    if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
       tty->print_cr("  Bailing out because intrinsic was inlined at top level");
     }
 #endif
@@ -3983,7 +3983,7 @@ bool LibraryCallKit::inline_native_Reflection_getCallerClass() {
       // Frame 0 and 1 must be caller sensitive (see JVM_GetCallerClass).
       if (!m->caller_sensitive()) {
 #ifndef PRODUCT
-        if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) {
+        if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
           tty->print_cr("  Bailing out: CallerSensitive annotation expected at frame %d", n);
         }
 #endif
@@ -3999,7 +3999,7 @@ bool LibraryCallKit::inline_native_Reflection_getCallerClass() {
         set_result(makecon(TypeInstPtr::make(caller_mirror)));
 
 #ifndef PRODUCT
-        if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) {
+        if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
           tty->print_cr("  Succeeded: caller = %d) %s.%s, JVMS depth = %d", n, caller_klass->name()->as_utf8(), caller_jvms->method()->name()->as_utf8(), jvms()->depth());
           tty->print_cr("  JVM state at this point:");
           for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) {
@@ -4015,7 +4015,7 @@ bool LibraryCallKit::inline_native_Reflection_getCallerClass() {
   }
 
 #ifndef PRODUCT
-  if ((PrintIntrinsics || PrintInlining || PrintOptoInlining) && Verbose) {
+  if ((C->print_intrinsics() || C->print_inlining()) && Verbose) {
     tty->print_cr("  Bailing out because caller depth exceeded inlining depth = %d", jvms()->depth());
     tty->print_cr("  JVM state at this point:");
     for (int i = jvms()->depth(), n = 1; i >= 1; i--, n++) {
diff --git a/src/share/vm/prims/jni.cpp b/src/share/vm/prims/jni.cpp
index c7886920b..cbd7860a0 100644
--- a/src/share/vm/prims/jni.cpp
+++ b/src/share/vm/prims/jni.cpp
@@ -5046,7 +5046,10 @@ _JNI_IMPORT_OR_EXPORT_ jint JNICALL JNI_GetDefaultJavaVMInitArgs(void *args_) {
 void TestReservedSpace_test();
 void TestReserveMemorySpecial_test();
 void TestVirtualSpace_test();
-void MetaspaceAux_test();
+void TestMetaspaceAux_test();
+#if INCLUDE_ALL_GCS
+void TestG1BiasedArray_test();
+#endif
 
 void execute_internal_vm_tests() {
   if (ExecuteInternalVMTests) {
@@ -5054,7 +5057,7 @@ void execute_internal_vm_tests() {
     run_unit_test(TestReservedSpace_test());
     run_unit_test(TestReserveMemorySpecial_test());
     run_unit_test(TestVirtualSpace_test());
-    run_unit_test(MetaspaceAux_test());
+    run_unit_test(TestMetaspaceAux_test());
     run_unit_test(GlobalDefinitions::test_globals());
     run_unit_test(GCTimerAllTest::all());
     run_unit_test(arrayOopDesc::test_max_array_length());
@@ -5066,6 +5069,7 @@ void execute_internal_vm_tests() {
     run_unit_test(VMStructs::test());
 #endif
 #if INCLUDE_ALL_GCS
+    run_unit_test(TestG1BiasedArray_test());
     run_unit_test(HeapRegionRemSet::test_prt());
 #endif
     tty->print_cr("All internal VM tests passed");
diff --git a/src/share/vm/prims/jvm.cpp b/src/share/vm/prims/jvm.cpp
index d7a961edf..d4fa736bd 100644
--- a/src/share/vm/prims/jvm.cpp
+++ b/src/share/vm/prims/jvm.cpp
@@ -1835,16 +1835,27 @@ JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredFields(JNIEnv *env, jclass ofClass,
 }
 JVM_END
 
-JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly))
-{
-  JVMWrapper("JVM_GetClassDeclaredMethods");
+static bool select_method(methodHandle method, bool want_constructor) {
+  if (want_constructor) {
+    return (method->is_initializer() && !method->is_static());
+  } else {
+    return  (!method->is_initializer() && !method->is_overpass());
+  }
+}
+
+static jobjectArray get_class_declared_methods_helper(
+                                  JNIEnv *env,
+                                  jclass ofClass, jboolean publicOnly,
+                                  bool want_constructor,
+                                  Klass* klass, TRAPS) {
+
   JvmtiVMObjectAllocEventCollector oam;
 
   // Exclude primitive types and array types
   if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass))
       || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) {
     // Return empty array
-    oop res = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), 0, CHECK_NULL);
+    oop res = oopFactory::new_objArray(klass, 0, CHECK_NULL);
     return (jobjectArray) JNIHandles::make_local(env, res);
   }
 
@@ -1855,87 +1866,67 @@ JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass,
 
   Array<Method*>* methods = k->methods();
   int methods_length = methods->length();
+
+  // Save original method_idnum in case of redefinition, which can change
+  // the idnum of obsolete methods.  The new method will have the same idnum
+  // but if we refresh the methods array, the counts will be wrong.
+  ResourceMark rm(THREAD);
+  GrowableArray<int>* idnums = new GrowableArray<int>(methods_length);
   int num_methods = 0;
 
-  int i;
-  for (i = 0; i < methods_length; i++) {
+  for (int i = 0; i < methods_length; i++) {
     methodHandle method(THREAD, methods->at(i));
-    if (!method->is_initializer() && !method->is_overpass()) {
+    if (select_method(method, want_constructor)) {
       if (!publicOnly || method->is_public()) {
+        idnums->push(method->method_idnum());
         ++num_methods;
       }
     }
   }
 
   // Allocate result
-  objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Method_klass(), num_methods, CHECK_NULL);
+  objArrayOop r = oopFactory::new_objArray(klass, num_methods, CHECK_NULL);
   objArrayHandle result (THREAD, r);
 
-  int out_idx = 0;
-  for (i = 0; i < methods_length; i++) {
-    methodHandle method(THREAD, methods->at(i));
-    if (!method->is_initializer() && !method->is_overpass()) {
-      if (!publicOnly || method->is_public()) {
-        oop m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL);
-        result->obj_at_put(out_idx, m);
-        ++out_idx;
+  // Now just put the methods that we selected above, but go by their idnum
+  // in case of redefinition.  The methods can be redefined at any safepoint,
+  // so above when allocating the oop array and below when creating reflect
+  // objects.
+  for (int i = 0; i < num_methods; i++) {
+    methodHandle method(THREAD, k->method_with_idnum(idnums->at(i)));
+    if (method.is_null()) {
+      // Method may have been deleted and seems this API can handle null
+      // Otherwise should probably put a method that throws NSME
+      result->obj_at_put(i, NULL);
+    } else {
+      oop m;
+      if (want_constructor) {
+        m = Reflection::new_constructor(method, CHECK_NULL);
+      } else {
+        m = Reflection::new_method(method, UseNewReflection, false, CHECK_NULL);
       }
+      result->obj_at_put(i, m);
     }
   }
-  assert(out_idx == num_methods, "just checking");
+
   return (jobjectArray) JNIHandles::make_local(env, result());
 }
+
+JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredMethods(JNIEnv *env, jclass ofClass, jboolean publicOnly))
+{
+  JVMWrapper("JVM_GetClassDeclaredMethods");
+  return get_class_declared_methods_helper(env, ofClass, publicOnly,
+                                           /*want_constructor*/ false,
+                                           SystemDictionary::reflect_Method_klass(), THREAD);
+}
 JVM_END
 
 JVM_ENTRY(jobjectArray, JVM_GetClassDeclaredConstructors(JNIEnv *env, jclass ofClass, jboolean publicOnly))
 {
   JVMWrapper("JVM_GetClassDeclaredConstructors");
-  JvmtiVMObjectAllocEventCollector oam;
-
-  // Exclude primitive types and array types
-  if (java_lang_Class::is_primitive(JNIHandles::resolve_non_null(ofClass))
-      || java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass))->oop_is_array()) {
-    // Return empty array
-    oop res = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), 0 , CHECK_NULL);
-    return (jobjectArray) JNIHandles::make_local(env, res);
-  }
-
-  instanceKlassHandle k(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(ofClass)));
-
-  // Ensure class is linked
-  k->link_class(CHECK_NULL);
-
-  Array<Method*>* methods = k->methods();
-  int methods_length = methods->length();
-  int num_constructors = 0;
-
-  int i;
-  for (i = 0; i < methods_length; i++) {
-    methodHandle method(THREAD, methods->at(i));
-    if (method->is_initializer() && !method->is_static()) {
-      if (!publicOnly || method->is_public()) {
-        ++num_constructors;
-      }
-    }
-  }
-
-  // Allocate result
-  objArrayOop r = oopFactory::new_objArray(SystemDictionary::reflect_Constructor_klass(), num_constructors, CHECK_NULL);
-  objArrayHandle result(THREAD, r);
-
-  int out_idx = 0;
-  for (i = 0; i < methods_length; i++) {
-    methodHandle method(THREAD, methods->at(i));
-    if (method->is_initializer() && !method->is_static()) {
-      if (!publicOnly || method->is_public()) {
-        oop m = Reflection::new_constructor(method, CHECK_NULL);
-        result->obj_at_put(out_idx, m);
-        ++out_idx;
-      }
-    }
-  }
-  assert(out_idx == num_constructors, "just checking");
-  return (jobjectArray) JNIHandles::make_local(env, result());
+  return get_class_declared_methods_helper(env, ofClass, publicOnly,
+                                           /*want_constructor*/ true,
+                                           SystemDictionary::reflect_Constructor_klass(), THREAD);
 }
 JVM_END
 
diff --git a/src/share/vm/prims/jvmtiEnvBase.hpp b/src/share/vm/prims/jvmtiEnvBase.hpp
index 929dcf222..265154683 100644
--- a/src/share/vm/prims/jvmtiEnvBase.hpp
+++ b/src/share/vm/prims/jvmtiEnvBase.hpp
@@ -406,7 +406,11 @@ public:
   VMOp_Type type() const { return VMOp_GetCurrentContendedMonitor; }
   jvmtiError result() { return _result; }
   void doit() {
-    _result = ((JvmtiEnvBase *)_env)->get_current_contended_monitor(_calling_thread,_java_thread,_owned_monitor_ptr);
+    _result = JVMTI_ERROR_THREAD_NOT_ALIVE;
+    if (Threads::includes(_java_thread) && !_java_thread->is_exiting() &&
+        _java_thread->threadObj() != NULL) {
+      _result = ((JvmtiEnvBase *)_env)->get_current_contended_monitor(_calling_thread,_java_thread,_owned_monitor_ptr);
+    }
   }
 };
 
diff --git a/src/share/vm/prims/jvmtiImpl.cpp b/src/share/vm/prims/jvmtiImpl.cpp
index 6f8b41297..0fcd1ba94 100644
--- a/src/share/vm/prims/jvmtiImpl.cpp
+++ b/src/share/vm/prims/jvmtiImpl.cpp
@@ -273,59 +273,49 @@ void JvmtiBreakpoint::each_method_version_do(method_action meth_act) {
 
   // add/remove breakpoint to/from versions of the method that
   // are EMCP. Directly or transitively obsolete methods are
-  // not saved in the PreviousVersionInfo.
+  // not saved in the PreviousVersionNodes.
   Thread *thread = Thread::current();
   instanceKlassHandle ikh = instanceKlassHandle(thread, _method->method_holder());
   Symbol* m_name = _method->name();
   Symbol* m_signature = _method->signature();
 
-  {
-    ResourceMark rm(thread);
-    // PreviousVersionInfo objects returned via PreviousVersionWalker
-    // contain a GrowableArray of handles. We have to clean up the
-    // GrowableArray _after_ the PreviousVersionWalker destructor
-    // has destroyed the handles.
-    {
-      // search previous versions if they exist
-      PreviousVersionWalker pvw((InstanceKlass *)ikh());
-      for (PreviousVersionInfo * pv_info = pvw.next_previous_version();
-           pv_info != NULL; pv_info = pvw.next_previous_version()) {
-        GrowableArray<methodHandle>* methods =
-          pv_info->prev_EMCP_method_handles();
-
-        if (methods == NULL) {
-          // We have run into a PreviousVersion generation where
-          // all methods were made obsolete during that generation's
-          // RedefineClasses() operation. At the time of that
-          // operation, all EMCP methods were flushed so we don't
-          // have to go back any further.
-          //
-          // A NULL methods array is different than an empty methods
-          // array. We cannot infer any optimizations about older
-          // generations from an empty methods array for the current
-          // generation.
-          break;
-        }
+  // search previous versions if they exist
+  PreviousVersionWalker pvw(thread, (InstanceKlass *)ikh());
+  for (PreviousVersionNode * pv_node = pvw.next_previous_version();
+       pv_node != NULL; pv_node = pvw.next_previous_version()) {
+    GrowableArray<Method*>* methods = pv_node->prev_EMCP_methods();
+
+    if (methods == NULL) {
+      // We have run into a PreviousVersion generation where
+      // all methods were made obsolete during that generation's
+      // RedefineClasses() operation. At the time of that
+      // operation, all EMCP methods were flushed so we don't
+      // have to go back any further.
+      //
+      // A NULL methods array is different than an empty methods
+      // array. We cannot infer any optimizations about older
+      // generations from an empty methods array for the current
+      // generation.
+      break;
+    }
 
-        for (int i = methods->length() - 1; i >= 0; i--) {
-          methodHandle method = methods->at(i);
-          // obsolete methods that are running are not deleted from
-          // previous version array, but they are skipped here.
-          if (!method->is_obsolete() &&
-              method->name() == m_name &&
-              method->signature() == m_signature) {
-            RC_TRACE(0x00000800, ("%sing breakpoint in %s(%s)",
-              meth_act == &Method::set_breakpoint ? "sett" : "clear",
-              method->name()->as_C_string(),
-              method->signature()->as_C_string()));
-
-            ((Method*)method()->*meth_act)(_bci);
-            break;
-          }
-        }
+    for (int i = methods->length() - 1; i >= 0; i--) {
+      Method* method = methods->at(i);
+      // obsolete methods that are running are not deleted from
+      // previous version array, but they are skipped here.
+      if (!method->is_obsolete() &&
+          method->name() == m_name &&
+          method->signature() == m_signature) {
+        RC_TRACE(0x00000800, ("%sing breakpoint in %s(%s)",
+          meth_act == &Method::set_breakpoint ? "sett" : "clear",
+          method->name()->as_C_string(),
+          method->signature()->as_C_string()));
+
+        (method->*meth_act)(_bci);
+        break;
       }
-    } // pvw is cleaned up
-  } // rm is cleaned up
+    }
+  }
 }
 
 void JvmtiBreakpoint::set() {
diff --git a/src/share/vm/prims/jvmtiRedefineClasses.cpp b/src/share/vm/prims/jvmtiRedefineClasses.cpp
index 0e3bbc35c..34254d6b1 100644
--- a/src/share/vm/prims/jvmtiRedefineClasses.cpp
+++ b/src/share/vm/prims/jvmtiRedefineClasses.cpp
@@ -2807,28 +2807,20 @@ void VM_RedefineClasses::AdjustCpoolCacheAndVtable::do_klass(Klass* k) {
                                         &trace_name_printed);
       }
     }
-    {
-      ResourceMark rm(_thread);
-      // PreviousVersionInfo objects returned via PreviousVersionWalker
-      // contain a GrowableArray of handles. We have to clean up the
-      // GrowableArray _after_ the PreviousVersionWalker destructor
-      // has destroyed the handles.
-      {
-        // the previous versions' constant pool caches may need adjustment
-        PreviousVersionWalker pvw(ik);
-        for (PreviousVersionInfo * pv_info = pvw.next_previous_version();
-             pv_info != NULL; pv_info = pvw.next_previous_version()) {
-          other_cp = pv_info->prev_constant_pool_handle();
-          cp_cache = other_cp->cache();
-          if (cp_cache != NULL) {
-            cp_cache->adjust_method_entries(_matching_old_methods,
-                                            _matching_new_methods,
-                                            _matching_methods_length,
-                                            &trace_name_printed);
-          }
-        }
-      } // pvw is cleaned up
-    } // rm is cleaned up
+
+    // the previous versions' constant pool caches may need adjustment
+    PreviousVersionWalker pvw(_thread, ik);
+    for (PreviousVersionNode * pv_node = pvw.next_previous_version();
+         pv_node != NULL; pv_node = pvw.next_previous_version()) {
+      other_cp = pv_node->prev_constant_pool();
+      cp_cache = other_cp->cache();
+      if (cp_cache != NULL) {
+        cp_cache->adjust_method_entries(_matching_old_methods,
+                                        _matching_new_methods,
+                                        _matching_methods_length,
+                                        &trace_name_printed);
+      }
+    }
   }
 }
 
@@ -2942,10 +2934,9 @@ void VM_RedefineClasses::check_methods_and_mark_as_obsolete(
       // obsolete methods need a unique idnum
       u2 num = InstanceKlass::cast(_the_class_oop)->next_method_idnum();
       if (num != ConstMethod::UNSET_IDNUM) {
-//      u2 old_num = old_method->method_idnum();
         old_method->set_method_idnum(num);
-// TO DO: attach obsolete annotations to obsolete method's new idnum
       }
+
       // With tracing we try not to "yack" too much. The position of
       // this trace assumes there are fewer obsolete methods than
       // EMCP methods.
diff --git a/src/share/vm/runtime/arguments.cpp b/src/share/vm/runtime/arguments.cpp
index 93b31f185..10aaededf 100644
--- a/src/share/vm/runtime/arguments.cpp
+++ b/src/share/vm/runtime/arguments.cpp
@@ -1100,6 +1100,7 @@ void Arguments::set_mode_flags(Mode mode) {
   }
 }
 
+#if defined(COMPILER2) || defined(_LP64) || !INCLUDE_CDS
 // Conflict: required to use shared spaces (-Xshare:on), but
 // incompatible command line options were chosen.
 
@@ -1112,6 +1113,7 @@ static void no_shared_spaces() {
     FLAG_SET_DEFAULT(UseSharedSpaces, false);
   }
 }
+#endif
 
 void Arguments::set_tiered_flags() {
   // With tiered, set default policy to AdvancedThresholdPolicy, which is 3.
@@ -1520,16 +1522,18 @@ void Arguments::set_ergonomics_flags() {
         FLAG_SET_ERGO(bool, UseParallelGC, true);
       }
     }
-    // Shared spaces work fine with other GCs but causes bytecode rewriting
-    // to be disabled, which hurts interpreter performance and decreases
-    // server performance.   On server class machines, keep the default
-    // off unless it is asked for.  Future work: either add bytecode rewriting
-    // at link time, or rewrite bytecodes in non-shared methods.
-    if (!DumpSharedSpaces && !RequireSharedSpaces &&
-        (FLAG_IS_DEFAULT(UseSharedSpaces) || !UseSharedSpaces)) {
-      no_shared_spaces();
-    }
   }
+#ifdef COMPILER2
+  // Shared spaces work fine with other GCs but causes bytecode rewriting
+  // to be disabled, which hurts interpreter performance and decreases
+  // server performance.  When -server is specified, keep the default off
+  // unless it is asked for.  Future work: either add bytecode rewriting
+  // at link time, or rewrite bytecodes in non-shared methods.
+  if (!DumpSharedSpaces && !RequireSharedSpaces &&
+      (FLAG_IS_DEFAULT(UseSharedSpaces) || !UseSharedSpaces)) {
+    no_shared_spaces();
+  }
+#endif
 
   set_conservative_max_heap_alignment();
 
@@ -2439,21 +2443,6 @@ jint Arguments::parse_vm_init_args(const JavaVMInitArgs* args) {
     return result;
   }
 
-  if (AggressiveOpts) {
-    // Insert alt-rt.jar between user-specified bootclasspath
-    // prefix and the default bootclasspath.  os::set_boot_path()
-    // uses meta_index_dir as the default bootclasspath directory.
-    const char* altclasses_jar = "alt-rt.jar";
-    size_t altclasses_path_len = strlen(get_meta_index_dir()) + 1 +
-                                 strlen(altclasses_jar);
-    char* altclasses_path = NEW_C_HEAP_ARRAY(char, altclasses_path_len, mtInternal);
-    strcpy(altclasses_path, get_meta_index_dir());
-    strcat(altclasses_path, altclasses_jar);
-    scp.add_suffix_to_prefix(altclasses_path);
-    scp_assembly_required = true;
-    FREE_C_HEAP_ARRAY(char, altclasses_path, mtInternal);
-  }
-
   // Parse _JAVA_OPTIONS environment variable (if present) (mimics classic VM)
   result = parse_java_options_environment_variable(&scp, &scp_assembly_required);
   if (result != JNI_OK) {
diff --git a/src/share/vm/runtime/globals.hpp b/src/share/vm/runtime/globals.hpp
index f2cf5efab..083cccd5c 100644
--- a/src/share/vm/runtime/globals.hpp
+++ b/src/share/vm/runtime/globals.hpp
@@ -2526,6 +2526,9 @@ class CommandLineFlags {
   product(bool, PrintStringTableStatistics, false,                          \
           "print statistics about the StringTable and SymbolTable")         \
                                                                             \
+  diagnostic(bool, VerifyStringTableAtExit, false,                          \
+          "verify StringTable contents at exit")                            \
+                                                                            \
   notproduct(bool, PrintSymbolTableSizeHistogram, false,                    \
           "print histogram of the symbol table")                            \
                                                                             \
diff --git a/src/share/vm/runtime/handles.hpp b/src/share/vm/runtime/handles.hpp
index dc2542279..c2ce4b38c 100644
--- a/src/share/vm/runtime/handles.hpp
+++ b/src/share/vm/runtime/handles.hpp
@@ -136,7 +136,7 @@ DEF_HANDLE(typeArray        , is_typeArray        )
 // Specific Handles for different oop types
 #define DEF_METADATA_HANDLE(name, type)          \
   class name##Handle;                            \
-  class name##Handle {                           \
+  class name##Handle : public StackObj {         \
     type*     _value;                            \
     Thread*   _thread;                           \
    protected:                                    \
@@ -175,7 +175,7 @@ DEF_METADATA_HANDLE(constantPool, ConstantPool)
 // Writing this class explicitly, since DEF_METADATA_HANDLE(klass) doesn't
 // provide the necessary Klass* <-> Klass* conversions. This Klass
 // could be removed when we don't have the Klass* typedef anymore.
-class KlassHandle {
+class KlassHandle : public StackObj {
   Klass* _value;
  protected:
    Klass* obj() const          { return _value; }
diff --git a/src/share/vm/runtime/handles.inline.hpp b/src/share/vm/runtime/handles.inline.hpp
index 9530b127a..5a0f3f773 100644
--- a/src/share/vm/runtime/handles.inline.hpp
+++ b/src/share/vm/runtime/handles.inline.hpp
@@ -79,6 +79,7 @@ inline name##Handle::name##Handle(const name##Handle &h) {             \
     } else {                                                           \
       _thread = Thread::current();                                     \
     }                                                                  \
+    assert (_thread->is_in_stack((address)this), "not on stack?");     \
     _thread->metadata_handles()->push((Metadata*)_value);              \
   } else {                                                             \
     _thread = NULL;                                                    \
@@ -95,6 +96,7 @@ inline name##Handle& name##Handle::operator=(const name##Handle &s) {  \
     } else {                                                           \
       _thread = Thread::current();                                     \
     }                                                                  \
+    assert (_thread->is_in_stack((address)this), "not on stack?");     \
     _thread->metadata_handles()->push((Metadata*)_value);              \
   } else {                                                             \
     _thread = NULL;                                                    \
diff --git a/src/share/vm/runtime/java.cpp b/src/share/vm/runtime/java.cpp
index ebc4e0875..874765fa3 100644
--- a/src/share/vm/runtime/java.cpp
+++ b/src/share/vm/runtime/java.cpp
@@ -544,6 +544,19 @@ void before_exit(JavaThread * thread) {
   // it will run into trouble when system destroys static variables.
   MemTracker::shutdown(MemTracker::NMT_normal);
 
+  if (VerifyStringTableAtExit) {
+    int fail_cnt = 0;
+    {
+      MutexLocker ml(StringTable_lock);
+      fail_cnt = StringTable::verify_and_compare_entries();
+    }
+
+    if (fail_cnt != 0) {
+      tty->print_cr("ERROR: fail_cnt=%d", fail_cnt);
+      guarantee(fail_cnt == 0, "unexpected StringTable verification failures");
+    }
+  }
+
   #undef BEFORE_EXIT_NOT_RUN
   #undef BEFORE_EXIT_RUNNING
   #undef BEFORE_EXIT_DONE
diff --git a/src/share/vm/runtime/sharedRuntime.cpp b/src/share/vm/runtime/sharedRuntime.cpp
index d014eda2f..17ea65ae7 100644
--- a/src/share/vm/runtime/sharedRuntime.cpp
+++ b/src/share/vm/runtime/sharedRuntime.cpp
@@ -1506,8 +1506,11 @@ methodHandle SharedRuntime::handle_ic_miss_helper(JavaThread *thread, TRAPS) {
                                                 info, CHECK_(methodHandle()));
         inline_cache->set_to_monomorphic(info);
       } else if (!inline_cache->is_megamorphic() && !inline_cache->is_clean()) {
-        // Change to megamorphic
-        inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle()));
+        // Potential change to megamorphic
+        bool successful = inline_cache->set_to_megamorphic(&call_info, bc, CHECK_(methodHandle()));
+        if (!successful) {
+          inline_cache->set_to_clean();
+        }
       } else {
         // Either clean or megamorphic
       }
diff --git a/src/share/vm/runtime/vm_version.hpp b/src/share/vm/runtime/vm_version.hpp
index c901b260d..f03b77ca3 100644
--- a/src/share/vm/runtime/vm_version.hpp
+++ b/src/share/vm/runtime/vm_version.hpp
@@ -78,7 +78,13 @@ class Abstract_VM_Version: AllStatic {
   static const char* jre_release_version();
 
   // does HW support an 8-byte compare-exchange operation?
-  static bool supports_cx8()  {return _supports_cx8;}
+  static bool supports_cx8()  {
+#ifdef SUPPORTS_NATIVE_CX8
+    return true;
+#else
+    return _supports_cx8;
+#endif
+  }
   // does HW support atomic get-and-set or atomic get-and-add?  Used
   // to guide intrinsification decisions for Unsafe atomic ops
   static bool supports_atomic_getset4()  {return _supports_atomic_getset4;}
diff --git a/src/share/vm/services/attachListener.cpp b/src/share/vm/services/attachListener.cpp
index bf002e7fa..e30c3eeff 100644
--- a/src/share/vm/services/attachListener.cpp
+++ b/src/share/vm/services/attachListener.cpp
@@ -470,7 +470,17 @@ void AttachListener::init() {
                        vmSymbols::threadgroup_string_void_signature(),
                        thread_group,
                        string,
-                       CHECK);
+                       THREAD);
+
+  if (HAS_PENDING_EXCEPTION) {
+    tty->print_cr("Exception in VM (AttachListener::init) : ");
+    java_lang_Throwable::print(PENDING_EXCEPTION, tty);
+    tty->cr();
+
+    CLEAR_PENDING_EXCEPTION;
+
+    return;
+  }
 
   KlassHandle group(THREAD, SystemDictionary::ThreadGroup_klass());
   JavaCalls::call_special(&result,
@@ -479,7 +489,17 @@ void AttachListener::init() {
                         vmSymbols::add_method_name(),
                         vmSymbols::thread_void_signature(),
                         thread_oop,             // ARG 1
-                        CHECK);
+                        THREAD);
+
+  if (HAS_PENDING_EXCEPTION) {
+    tty->print_cr("Exception in VM (AttachListener::init) : ");
+    java_lang_Throwable::print(PENDING_EXCEPTION, tty);
+    tty->cr();
+
+    CLEAR_PENDING_EXCEPTION;
+
+    return;
+  }
 
   { MutexLocker mu(Threads_lock);
     JavaThread* listener_thread = new JavaThread(&attach_listener_thread_entry);
diff --git a/src/share/vm/services/diagnosticArgument.cpp b/src/share/vm/services/diagnosticArgument.cpp
index 0a1c20d8a..51126f063 100644
--- a/src/share/vm/services/diagnosticArgument.cpp
+++ b/src/share/vm/services/diagnosticArgument.cpp
@@ -61,7 +61,7 @@ void GenDCmdArgument::to_string(MemorySizeArgument m, char* buf, size_t len) {
 }
 
 void GenDCmdArgument::to_string(char* c, char* buf, size_t len) {
-  jio_snprintf(buf, len, "%s", c);
+  jio_snprintf(buf, len, "%s", (c != NULL) ? c : "");
 }
 
 void GenDCmdArgument::to_string(StringArrayArgument* f, char* buf, size_t len) {
diff --git a/test/compiler/print/PrintInlining.java b/test/compiler/print/PrintInlining.java
new file mode 100644
index 000000000..877d25e8c
--- /dev/null
+++ b/test/compiler/print/PrintInlining.java
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8022585
+ * @summary VM crashes when ran with -XX:+PrintInlining
+ * @run main/othervm -Xcomp -XX:+PrintInlining PrintInlining
+ *
+ */
+
+public class PrintInlining {
+  public static void main(String[] args) {
+    System.out.println("Passed");
+  }
+}
diff --git a/test/runtime/CDSCompressedKPtrs/XShareAuto.java b/test/runtime/CDSCompressedKPtrs/XShareAuto.java
index 7f36977ec..9bd68e117 100644
--- a/test/runtime/CDSCompressedKPtrs/XShareAuto.java
+++ b/test/runtime/CDSCompressedKPtrs/XShareAuto.java
@@ -33,16 +33,9 @@ import com.oracle.java.testlibrary.*;
 
 public class XShareAuto {
     public static void main(String[] args) throws Exception {
-        if (!Platform.is64bit()) {
-            System.out.println("ObjectAlignmentInBytes for CDS is only " +
-                "supported on 64bit platforms; this plaform is " +
-                System.getProperty("sun.arch.data.model"));
-            System.out.println("Skipping the test");
-            return;
-        }
         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
-            "-XX:+UnlockDiagnosticVMOptions", "-XX:SharedArchiveFile=./sample.jsa",
-            "-Xshare:dump");
+            "-server", "-XX:+UnlockDiagnosticVMOptions",
+            "-XX:SharedArchiveFile=./sample.jsa", "-Xshare:dump");
         OutputAnalyzer output = new OutputAnalyzer(pb.start());
         output.shouldContain("Loading classes to share");
         output.shouldHaveExitValue(0);