diff options
Diffstat (limited to 'src/share/vm/memory/heapInspection.cpp')
-rw-r--r-- | src/share/vm/memory/heapInspection.cpp | 284 |
1 files changed, 265 insertions, 19 deletions
diff --git a/src/share/vm/memory/heapInspection.cpp b/src/share/vm/memory/heapInspection.cpp index 71674fcb2..a51ea1d15 100644 --- a/src/share/vm/memory/heapInspection.cpp +++ b/src/share/vm/memory/heapInspection.cpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2002, 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 @@ -23,15 +23,17 @@ */ #include "precompiled.hpp" +#include "classfile/classLoaderData.hpp" #include "gc_interface/collectedHeap.hpp" #include "memory/genCollectedHeap.hpp" #include "memory/heapInspection.hpp" #include "memory/resourceArea.hpp" #include "runtime/os.hpp" #include "utilities/globalDefinitions.hpp" -#ifndef SERIALGC +#include "utilities/macros.hpp" +#if INCLUDE_ALL_GCS #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" -#endif +#endif // INCLUDE_ALL_GCS // HeapInspection @@ -41,12 +43,24 @@ int KlassInfoEntry::compare(KlassInfoEntry* e1, KlassInfoEntry* e2) { } else if(e1->_instance_words < e2->_instance_words) { return 1; } - return 0; + // Sort alphabetically, note 'Z' < '[' < 'a', but it's better to group + // the array classes before all the instance classes. + ResourceMark rm; + const char* name1 = e1->klass()->external_name(); + const char* name2 = e2->klass()->external_name(); + bool d1 = (name1[0] == '['); + bool d2 = (name2[0] == '['); + if (d1 && !d2) { + return -1; + } else if (d2 && !d1) { + return 1; + } else { + return strcmp(name1, name2); + } } -void KlassInfoEntry::print_on(outputStream* st) const { - ResourceMark rm; - const char* name;; +const char* KlassInfoEntry::name() const { + const char* name; if (_klass->name() != NULL) { name = _klass->external_name(); } else { @@ -60,11 +74,17 @@ void KlassInfoEntry::print_on(outputStream* st) const { if (_klass == Universe::longArrayKlassObj()) name = "<longArrayKlass>"; else name = "<no name>"; } + return name; +} + +void KlassInfoEntry::print_on(outputStream* st) const { + ResourceMark rm; + // simplify the formatting (ILP32 vs LP64) - always cast the numbers to 64-bit st->print_cr(INT64_FORMAT_W(13) " " UINT64_FORMAT_W(13) " %s", (jlong) _instance_count, (julong) _instance_words * HeapWordSize, - name); + name()); } KlassInfoEntry* KlassInfoBucket::lookup(Klass* const k) { @@ -101,7 +121,14 @@ void KlassInfoBucket::empty() { } } -KlassInfoTable::KlassInfoTable(int size, HeapWord* ref) { +void KlassInfoTable::AllClassesFinder::do_klass(Klass* k) { + // This has the SIDE EFFECT of creating a KlassInfoEntry + // for <k>, if one doesn't exist yet. + _table->lookup(k); +} + +KlassInfoTable::KlassInfoTable(int size, HeapWord* ref, + bool need_class_stats) { _size = 0; _ref = ref; _buckets = NEW_C_HEAP_ARRAY(KlassInfoBucket, size, mtInternal); @@ -110,6 +137,10 @@ KlassInfoTable::KlassInfoTable(int size, HeapWord* ref) { for (int index = 0; index < _size; index++) { _buckets[index].initialize(); } + if (need_class_stats) { + AllClassesFinder finder(this); + ClassLoaderDataGraph::classes_do(&finder); + } } } @@ -165,7 +196,8 @@ int KlassInfoHisto::sort_helper(KlassInfoEntry** e1, KlassInfoEntry** e2) { return (*e1)->compare(*e1,*e2); } -KlassInfoHisto::KlassInfoHisto(const char* title, int estimatedCount) : +KlassInfoHisto::KlassInfoHisto(KlassInfoTable* cit, const char* title, int estimatedCount) : + _cit(cit), _title(title) { _elements = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<KlassInfoEntry*>(estimatedCount,true); } @@ -196,9 +228,205 @@ void KlassInfoHisto::print_elements(outputStream* st) const { total, totalw * HeapWordSize); } -void KlassInfoHisto::print_on(outputStream* st) const { - st->print_cr("%s",title()); - print_elements(st); +#define MAKE_COL_NAME(field, name, help) #name, +#define MAKE_COL_HELP(field, name, help) help, + +static const char *name_table[] = { + HEAP_INSPECTION_COLUMNS_DO(MAKE_COL_NAME) +}; + +static const char *help_table[] = { + HEAP_INSPECTION_COLUMNS_DO(MAKE_COL_HELP) +}; + +bool KlassInfoHisto::is_selected(const char *col_name) { + if (_selected_columns == NULL) { + return true; + } + if (strcmp(_selected_columns, col_name) == 0) { + return true; + } + + const char *start = strstr(_selected_columns, col_name); + if (start == NULL) { + return false; + } + + // The following must be true, because _selected_columns != col_name + if (start > _selected_columns && start[-1] != ',') { + return false; + } + char x = start[strlen(col_name)]; + if (x != ',' && x != '\0') { + return false; + } + + return true; +} + +void KlassInfoHisto::print_title(outputStream* st, bool csv_format, + bool selected[], int width_table[], + const char *name_table[]) { + if (csv_format) { + st->print("Index,Super"); + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + if (selected[c]) {st->print(",%s", name_table[c]);} + } + st->print(",ClassName"); + } else { + st->print("Index Super"); + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + if (selected[c]) {st->print(str_fmt(width_table[c]), name_table[c]);} + } + st->print(" ClassName"); + } + + if (is_selected("ClassLoader")) { + st->print(",ClassLoader"); + } + st->cr(); +} + +void KlassInfoHisto::print_class_stats(outputStream* st, + bool csv_format, const char *columns) { + ResourceMark rm; + KlassSizeStats sz, sz_sum; + int i; + julong *col_table = (julong*)(&sz); + julong *colsum_table = (julong*)(&sz_sum); + int width_table[KlassSizeStats::_num_columns]; + bool selected[KlassSizeStats::_num_columns]; + + _selected_columns = columns; + + memset(&sz_sum, 0, sizeof(sz_sum)); + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + selected[c] = is_selected(name_table[c]); + } + + for(i=0; i < elements()->length(); i++) { + elements()->at(i)->set_index(i+1); + } + + for (int pass=1; pass<=2; pass++) { + if (pass == 2) { + print_title(st, csv_format, selected, width_table, name_table); + } + for(i=0; i < elements()->length(); i++) { + KlassInfoEntry* e = (KlassInfoEntry*)elements()->at(i); + const Klass* k = e->klass(); + + memset(&sz, 0, sizeof(sz)); + sz._inst_count = e->count(); + sz._inst_bytes = HeapWordSize * e->words(); + k->collect_statistics(&sz); + sz._total_bytes = sz._ro_bytes + sz._rw_bytes; + + if (pass == 1) { + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + colsum_table[c] += col_table[c]; + } + } else { + int super_index = -1; + if (k->oop_is_instance()) { + Klass* super = ((InstanceKlass*)k)->java_super(); + if (super) { + KlassInfoEntry* super_e = _cit->lookup(super); + if (super_e) { + super_index = super_e->index(); + } + } + } + + if (csv_format) { + st->print("%d,%d", e->index(), super_index); + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + if (selected[c]) {st->print("," JULONG_FORMAT, col_table[c]);} + } + st->print(",%s",e->name()); + } else { + st->print("%5d %5d", e->index(), super_index); + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + if (selected[c]) {print_julong(st, width_table[c], col_table[c]);} + } + st->print(" %s", e->name()); + } + if (is_selected("ClassLoader")) { + ClassLoaderData* loader_data = k->class_loader_data(); + st->print(","); + loader_data->print_value_on(st); + } + st->cr(); + } + } + + if (pass == 1) { + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + width_table[c] = col_width(colsum_table[c], name_table[c]); + } + } + } + + sz_sum._inst_size = 0; + + if (csv_format) { + st->print(","); + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + if (selected[c]) {st->print("," JULONG_FORMAT, colsum_table[c]);} + } + } else { + st->print(" "); + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + if (selected[c]) {print_julong(st, width_table[c], colsum_table[c]);} + } + st->print(" Total"); + if (sz_sum._total_bytes > 0) { + st->cr(); + st->print(" "); + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + if (selected[c]) { + switch (c) { + case KlassSizeStats::_index_inst_size: + case KlassSizeStats::_index_inst_count: + case KlassSizeStats::_index_method_count: + st->print(str_fmt(width_table[c]), "-"); + break; + default: + { + double perc = (double)(100) * (double)(colsum_table[c]) / (double)sz_sum._total_bytes; + st->print(perc_fmt(width_table[c]), perc); + } + } + } + } + } + } + st->cr(); + + if (!csv_format) { + print_title(st, csv_format, selected, width_table, name_table); + } +} + +julong KlassInfoHisto::annotations_bytes(Array<AnnotationArray*>* p) const { + julong bytes = 0; + if (p != NULL) { + for (int i = 0; i < p->length(); i++) { + bytes += count_bytes_array(p->at(i)); + } + bytes += count_bytes_array(p); + } + return bytes; +} + +void KlassInfoHisto::print_histo_on(outputStream* st, bool print_stats, + bool csv_format, const char *columns) { + if (print_stats) { + print_class_stats(st, csv_format, columns); + } else { + st->print_cr("%s",title()); + print_elements(st); + } } class HistoClosure : public KlassInfoClosure { @@ -236,8 +464,26 @@ void HeapInspection::heap_inspection(outputStream* st, bool need_prologue) { CollectedHeap* heap = Universe::heap(); bool is_shared_heap = false; + if (_print_help) { + for (int c=0; c<KlassSizeStats::_num_columns; c++) { + st->print("%s:\n\t", name_table[c]); + const int max_col = 60; + int col = 0; + for (const char *p = help_table[c]; *p; p++,col++) { + if (col >= max_col && *p == ' ') { + st->print("\n\t"); + col = 0; + } else { + st->print("%c", *p); + } + } + st->print_cr(".\n"); + } + return; + } + // Collect klass instance info - KlassInfoTable cit(KlassInfoTable::cit_size, ref); + KlassInfoTable cit(KlassInfoTable::cit_size, ref, _print_class_stats); if (!cit.allocation_failed()) { // Iterate over objects in the heap RecordInstanceClosure ric(&cit); @@ -252,14 +498,14 @@ void HeapInspection::heap_inspection(outputStream* st, bool need_prologue) { missed_count); } // Sort and print klass instance info - KlassInfoHisto histo("\n" - " num #instances #bytes class name\n" - "----------------------------------------------", - KlassInfoHisto::histo_initial_size); + const char *title = "\n" + " num #instances #bytes class name\n" + "----------------------------------------------"; + KlassInfoHisto histo(&cit, title, KlassInfoHisto::histo_initial_size); HistoClosure hc(&histo); cit.iterate(&hc); histo.sort(); - histo.print_on(st); + histo.print_histo_on(st, _print_class_stats, _csv_format, _columns); } else { st->print_cr("WARNING: Ran out of C-heap; histogram not generated"); } |