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/*
* Copyright (c) 1998, 2012, 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_RUNTIME_HANDLES_INLINE_HPP
#define SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
#include "runtime/handles.hpp"
#include "runtime/thread.inline.hpp"
// these inline functions are in a separate file to break an include cycle
// between Thread and Handle
inline Handle::Handle(oop obj) {
if (obj == NULL) {
_handle = NULL;
} else {
_handle = Thread::current()->handle_area()->allocate_handle(obj);
}
}
#ifndef ASSERT
inline Handle::Handle(Thread* thread, oop obj) {
assert(thread == Thread::current(), "sanity check");
if (obj == NULL) {
_handle = NULL;
} else {
_handle = thread->handle_area()->allocate_handle(obj);
}
}
#endif // ASSERT
// Constructors for metadata handles
#define DEF_METADATA_HANDLE_FN(name, type) \
inline name##Handle::name##Handle(type* obj) : _value(obj), _thread(NULL) { \
if (obj != NULL) { \
assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
_thread = Thread::current(); \
assert (_thread->is_in_stack((address)this), "not on stack?"); \
_thread->metadata_handles()->push((Metadata*)obj); \
} \
} \
inline name##Handle::name##Handle(Thread* thread, type* obj) : _value(obj), _thread(thread) { \
if (obj != NULL) { \
assert(((Metadata*)obj)->is_valid(), "obj is valid"); \
assert(_thread == Thread::current(), "thread must be current"); \
assert (_thread->is_in_stack((address)this), "not on stack?"); \
_thread->metadata_handles()->push((Metadata*)obj); \
} \
} \
inline name##Handle::name##Handle(const name##Handle &h) { \
_value = h._value; \
if (_value != NULL) { \
assert(_value->is_valid(), "obj is valid"); \
if (h._thread != NULL) { \
assert(h._thread == Thread::current(), "thread must be current");\
_thread = h._thread; \
} else { \
_thread = Thread::current(); \
} \
assert (_thread->is_in_stack((address)this), "not on stack?"); \
_thread->metadata_handles()->push((Metadata*)_value); \
} else { \
_thread = NULL; \
} \
} \
inline name##Handle& name##Handle::operator=(const name##Handle &s) { \
remove(); \
_value = s._value; \
if (_value != NULL) { \
assert(_value->is_valid(), "obj is valid"); \
if (s._thread != NULL) { \
assert(s._thread == Thread::current(), "thread must be current");\
_thread = s._thread; \
} else { \
_thread = Thread::current(); \
} \
assert (_thread->is_in_stack((address)this), "not on stack?"); \
_thread->metadata_handles()->push((Metadata*)_value); \
} else { \
_thread = NULL; \
} \
return *this; \
} \
inline void name##Handle::remove() { \
if (_value != NULL) { \
int i = _thread->metadata_handles()->find_from_end((Metadata*)_value); \
assert(i!=-1, "not in metadata_handles list"); \
_thread->metadata_handles()->remove_at(i); \
} \
} \
inline name##Handle::~name##Handle () { remove(); } \
DEF_METADATA_HANDLE_FN(method, Method)
DEF_METADATA_HANDLE_FN(constantPool, ConstantPool)
inline HandleMark::HandleMark() {
initialize(Thread::current());
}
inline void HandleMark::push() {
// This is intentionally a NOP. pop_and_restore will reset
// values to the HandleMark further down the stack, typically
// in JavaCalls::call_helper.
debug_only(_area->_handle_mark_nesting++);
}
inline void HandleMark::pop_and_restore() {
HandleArea* area = _area; // help compilers with poor alias analysis
// Delete later chunks
if( _chunk->next() ) {
// reset arena size before delete chunks. Otherwise, the total
// arena size could exceed total chunk size
assert(area->size_in_bytes() > size_in_bytes(), "Sanity check");
area->set_size_in_bytes(size_in_bytes());
_chunk->next_chop();
} else {
assert(area->size_in_bytes() == size_in_bytes(), "Sanity check");
}
// Roll back arena to saved top markers
area->_chunk = _chunk;
area->_hwm = _hwm;
area->_max = _max;
debug_only(area->_handle_mark_nesting--);
}
#endif // SHARE_VM_RUNTIME_HANDLES_INLINE_HPP
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