Mercurial > hg > truffle
annotate src/share/vm/memory/heapInspection.cpp @ 1972:f95d63e2154a
6989984: Use standard include model for Hospot
Summary: Replaced MakeDeps and the includeDB files with more standardized solutions.
Reviewed-by: coleenp, kvn, kamg
| author | stefank |
|---|---|
| date | Tue, 23 Nov 2010 13:22:55 -0800 |
| parents | c18cbe5936b8 |
| children | 3582bf76420e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1972 | 2 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1489
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1489
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1489
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "gc_interface/collectedHeap.hpp" | |
| 27 #include "memory/genCollectedHeap.hpp" | |
| 28 #include "memory/heapInspection.hpp" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "oops/klassOop.hpp" | |
| 31 #include "runtime/os.hpp" | |
| 32 #include "utilities/globalDefinitions.hpp" | |
| 33 #ifndef SERIALGC | |
| 34 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp" | |
| 35 #endif | |
| 0 | 36 |
| 37 // HeapInspection | |
| 38 | |
| 39 int KlassInfoEntry::compare(KlassInfoEntry* e1, KlassInfoEntry* e2) { | |
| 40 if(e1->_instance_words > e2->_instance_words) { | |
| 41 return -1; | |
| 42 } else if(e1->_instance_words < e2->_instance_words) { | |
| 43 return 1; | |
| 44 } | |
| 45 return 0; | |
| 46 } | |
| 47 | |
| 48 void KlassInfoEntry::print_on(outputStream* st) const { | |
| 49 ResourceMark rm; | |
| 50 const char* name;; | |
| 51 if (_klass->klass_part()->name() != NULL) { | |
| 52 name = _klass->klass_part()->external_name(); | |
| 53 } else { | |
| 54 if (_klass == Universe::klassKlassObj()) name = "<klassKlass>"; else | |
| 55 if (_klass == Universe::arrayKlassKlassObj()) name = "<arrayKlassKlass>"; else | |
| 56 if (_klass == Universe::objArrayKlassKlassObj()) name = "<objArrayKlassKlass>"; else | |
| 57 if (_klass == Universe::instanceKlassKlassObj()) name = "<instanceKlassKlass>"; else | |
| 58 if (_klass == Universe::typeArrayKlassKlassObj()) name = "<typeArrayKlassKlass>"; else | |
| 59 if (_klass == Universe::symbolKlassObj()) name = "<symbolKlass>"; else | |
| 60 if (_klass == Universe::boolArrayKlassObj()) name = "<boolArrayKlass>"; else | |
| 61 if (_klass == Universe::charArrayKlassObj()) name = "<charArrayKlass>"; else | |
| 62 if (_klass == Universe::singleArrayKlassObj()) name = "<singleArrayKlass>"; else | |
| 63 if (_klass == Universe::doubleArrayKlassObj()) name = "<doubleArrayKlass>"; else | |
| 64 if (_klass == Universe::byteArrayKlassObj()) name = "<byteArrayKlass>"; else | |
| 65 if (_klass == Universe::shortArrayKlassObj()) name = "<shortArrayKlass>"; else | |
| 66 if (_klass == Universe::intArrayKlassObj()) name = "<intArrayKlass>"; else | |
| 67 if (_klass == Universe::longArrayKlassObj()) name = "<longArrayKlass>"; else | |
| 68 if (_klass == Universe::methodKlassObj()) name = "<methodKlass>"; else | |
| 69 if (_klass == Universe::constMethodKlassObj()) name = "<constMethodKlass>"; else | |
| 70 if (_klass == Universe::methodDataKlassObj()) name = "<methodDataKlass>"; else | |
| 71 if (_klass == Universe::constantPoolKlassObj()) name = "<constantPoolKlass>"; else | |
| 72 if (_klass == Universe::constantPoolCacheKlassObj()) name = "<constantPoolCacheKlass>"; else | |
| 73 if (_klass == Universe::compiledICHolderKlassObj()) name = "<compiledICHolderKlass>"; else | |
| 74 name = "<no name>"; | |
| 75 } | |
| 76 // simplify the formatting (ILP32 vs LP64) - always cast the numbers to 64-bit | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
77 st->print_cr(INT64_FORMAT_W(13) " " UINT64_FORMAT_W(13) " %s", |
| 0 | 78 (jlong) _instance_count, |
| 79 (julong) _instance_words * HeapWordSize, | |
| 80 name); | |
| 81 } | |
| 82 | |
| 83 KlassInfoEntry* KlassInfoBucket::lookup(const klassOop k) { | |
| 84 KlassInfoEntry* elt = _list; | |
| 85 while (elt != NULL) { | |
| 86 if (elt->is_equal(k)) { | |
| 87 return elt; | |
| 88 } | |
| 89 elt = elt->next(); | |
| 90 } | |
| 91 elt = new KlassInfoEntry(k, list()); | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
92 // We may be out of space to allocate the new entry. |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
93 if (elt != NULL) { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
94 set_list(elt); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
95 } |
| 0 | 96 return elt; |
| 97 } | |
| 98 | |
| 99 void KlassInfoBucket::iterate(KlassInfoClosure* cic) { | |
| 100 KlassInfoEntry* elt = _list; | |
| 101 while (elt != NULL) { | |
| 102 cic->do_cinfo(elt); | |
| 103 elt = elt->next(); | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 void KlassInfoBucket::empty() { | |
| 108 KlassInfoEntry* elt = _list; | |
| 109 _list = NULL; | |
| 110 while (elt != NULL) { | |
| 111 KlassInfoEntry* next = elt->next(); | |
| 112 delete elt; | |
| 113 elt = next; | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 KlassInfoTable::KlassInfoTable(int size, HeapWord* ref) { | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
118 _size = 0; |
| 0 | 119 _ref = ref; |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
120 _buckets = NEW_C_HEAP_ARRAY(KlassInfoBucket, size); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
121 if (_buckets != NULL) { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
122 _size = size; |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
123 for (int index = 0; index < _size; index++) { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
124 _buckets[index].initialize(); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
125 } |
| 0 | 126 } |
| 127 } | |
| 128 | |
| 129 KlassInfoTable::~KlassInfoTable() { | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
130 if (_buckets != NULL) { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
131 for (int index = 0; index < _size; index++) { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
132 _buckets[index].empty(); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
133 } |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
134 FREE_C_HEAP_ARRAY(KlassInfoBucket, _buckets); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
135 _size = 0; |
| 0 | 136 } |
| 137 } | |
| 138 | |
| 139 uint KlassInfoTable::hash(klassOop p) { | |
| 140 assert(Universe::heap()->is_in_permanent((HeapWord*)p), "all klasses in permgen"); | |
| 141 return (uint)(((uintptr_t)p - (uintptr_t)_ref) >> 2); | |
| 142 } | |
| 143 | |
| 144 KlassInfoEntry* KlassInfoTable::lookup(const klassOop k) { | |
| 145 uint idx = hash(k) % _size; | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
146 assert(_buckets != NULL, "Allocation failure should have been caught"); |
| 0 | 147 KlassInfoEntry* e = _buckets[idx].lookup(k); |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
148 // Lookup may fail if this is a new klass for which we |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
149 // could not allocate space for an new entry. |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
150 assert(e == NULL || k == e->klass(), "must be equal"); |
| 0 | 151 return e; |
| 152 } | |
| 153 | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
154 // Return false if the entry could not be recorded on account |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
155 // of running out of space required to create a new entry. |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
156 bool KlassInfoTable::record_instance(const oop obj) { |
| 0 | 157 klassOop k = obj->klass(); |
| 158 KlassInfoEntry* elt = lookup(k); | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
159 // elt may be NULL if it's a new klass for which we |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
160 // could not allocate space for a new entry in the hashtable. |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
161 if (elt != NULL) { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
162 elt->set_count(elt->count() + 1); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
163 elt->set_words(elt->words() + obj->size()); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
164 return true; |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
165 } else { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
166 return false; |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
167 } |
| 0 | 168 } |
| 169 | |
| 170 void KlassInfoTable::iterate(KlassInfoClosure* cic) { | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
171 assert(_size == 0 || _buckets != NULL, "Allocation failure should have been caught"); |
| 0 | 172 for (int index = 0; index < _size; index++) { |
| 173 _buckets[index].iterate(cic); | |
| 174 } | |
| 175 } | |
| 176 | |
| 177 int KlassInfoHisto::sort_helper(KlassInfoEntry** e1, KlassInfoEntry** e2) { | |
| 178 return (*e1)->compare(*e1,*e2); | |
| 179 } | |
| 180 | |
| 181 KlassInfoHisto::KlassInfoHisto(const char* title, int estimatedCount) : | |
| 182 _title(title) { | |
| 183 _elements = new (ResourceObj::C_HEAP) GrowableArray<KlassInfoEntry*>(estimatedCount,true); | |
| 184 } | |
| 185 | |
| 186 KlassInfoHisto::~KlassInfoHisto() { | |
| 187 delete _elements; | |
| 188 } | |
| 189 | |
| 190 void KlassInfoHisto::add(KlassInfoEntry* cie) { | |
| 191 elements()->append(cie); | |
| 192 } | |
| 193 | |
| 194 void KlassInfoHisto::sort() { | |
| 195 elements()->sort(KlassInfoHisto::sort_helper); | |
| 196 } | |
| 197 | |
| 198 void KlassInfoHisto::print_elements(outputStream* st) const { | |
| 199 // simplify the formatting (ILP32 vs LP64) - store the sum in 64-bit | |
| 200 jlong total = 0; | |
| 201 julong totalw = 0; | |
| 202 for(int i=0; i < elements()->length(); i++) { | |
| 203 st->print("%4d: ", i+1); | |
| 204 elements()->at(i)->print_on(st); | |
| 205 total += elements()->at(i)->count(); | |
| 206 totalw += elements()->at(i)->words(); | |
| 207 } | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
208 st->print_cr("Total " INT64_FORMAT_W(13) " " UINT64_FORMAT_W(13), |
| 0 | 209 total, totalw * HeapWordSize); |
| 210 } | |
| 211 | |
| 212 void KlassInfoHisto::print_on(outputStream* st) const { | |
| 213 st->print_cr("%s",title()); | |
| 214 print_elements(st); | |
| 215 } | |
| 216 | |
| 217 class HistoClosure : public KlassInfoClosure { | |
| 218 private: | |
| 219 KlassInfoHisto* _cih; | |
| 220 public: | |
| 221 HistoClosure(KlassInfoHisto* cih) : _cih(cih) {} | |
| 222 | |
| 223 void do_cinfo(KlassInfoEntry* cie) { | |
| 224 _cih->add(cie); | |
| 225 } | |
| 226 }; | |
| 227 | |
| 228 class RecordInstanceClosure : public ObjectClosure { | |
| 229 private: | |
| 230 KlassInfoTable* _cit; | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
231 size_t _missed_count; |
| 0 | 232 public: |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
233 RecordInstanceClosure(KlassInfoTable* cit) : |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
234 _cit(cit), _missed_count(0) {} |
| 0 | 235 |
| 236 void do_object(oop obj) { | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
237 if (!_cit->record_instance(obj)) { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
238 _missed_count++; |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
239 } |
| 0 | 240 } |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
241 |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
242 size_t missed_count() { return _missed_count; } |
| 0 | 243 }; |
| 244 | |
|
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
517
diff
changeset
|
245 void HeapInspection::heap_inspection(outputStream* st, bool need_prologue) { |
| 0 | 246 ResourceMark rm; |
| 247 HeapWord* ref; | |
| 248 | |
| 249 CollectedHeap* heap = Universe::heap(); | |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
11
diff
changeset
|
250 bool is_shared_heap = false; |
| 0 | 251 switch (heap->kind()) { |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
11
diff
changeset
|
252 case CollectedHeap::G1CollectedHeap: |
| 0 | 253 case CollectedHeap::GenCollectedHeap: { |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
11
diff
changeset
|
254 is_shared_heap = true; |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
11
diff
changeset
|
255 SharedHeap* sh = (SharedHeap*)heap; |
|
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
517
diff
changeset
|
256 if (need_prologue) { |
|
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
517
diff
changeset
|
257 sh->gc_prologue(false /* !full */); // get any necessary locks, etc. |
|
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
517
diff
changeset
|
258 } |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
11
diff
changeset
|
259 ref = sh->perm_gen()->used_region().start(); |
| 0 | 260 break; |
| 261 } | |
| 262 #ifndef SERIALGC | |
| 263 case CollectedHeap::ParallelScavengeHeap: { | |
| 264 ParallelScavengeHeap* psh = (ParallelScavengeHeap*)heap; | |
| 265 ref = psh->perm_gen()->object_space()->used_region().start(); | |
| 266 break; | |
| 267 } | |
| 268 #endif // SERIALGC | |
| 269 default: | |
| 270 ShouldNotReachHere(); // Unexpected heap kind for this op | |
| 271 } | |
| 272 // Collect klass instance info | |
| 273 KlassInfoTable cit(KlassInfoTable::cit_size, ref); | |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
274 if (!cit.allocation_failed()) { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
275 // Iterate over objects in the heap |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
276 RecordInstanceClosure ric(&cit); |
|
517
e9be0e04635a
6689653: JMapPerm fails with UseConcMarkSweepIncGC and compressed oops off
jmasa
parents:
356
diff
changeset
|
277 // If this operation encounters a bad object when using CMS, |
|
e9be0e04635a
6689653: JMapPerm fails with UseConcMarkSweepIncGC and compressed oops off
jmasa
parents:
356
diff
changeset
|
278 // consider using safe_object_iterate() which avoids perm gen |
|
e9be0e04635a
6689653: JMapPerm fails with UseConcMarkSweepIncGC and compressed oops off
jmasa
parents:
356
diff
changeset
|
279 // objects that may contain bad references. |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
280 Universe::heap()->object_iterate(&ric); |
| 0 | 281 |
|
11
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
282 // Report if certain classes are not counted because of |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
283 // running out of C-heap for the histogram. |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
284 size_t missed_count = ric.missed_count(); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
285 if (missed_count != 0) { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
286 st->print_cr("WARNING: Ran out of C-heap; undercounted " SIZE_FORMAT |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
287 " total instances in data below", |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
288 missed_count); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
289 } |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
290 // Sort and print klass instance info |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
291 KlassInfoHisto histo("\n" |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
292 " num #instances #bytes class name\n" |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
293 "----------------------------------------------", |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
294 KlassInfoHisto::histo_initial_size); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
295 HistoClosure hc(&histo); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
296 cit.iterate(&hc); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
297 histo.sort(); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
298 histo.print_on(st); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
299 } else { |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
300 st->print_cr("WARNING: Ran out of C-heap; histogram not generated"); |
|
3c1dbcaaab1d
6621728: Heap inspection should not crash in the face of C-heap exhaustion
ysr
parents:
0
diff
changeset
|
301 } |
| 0 | 302 st->flush(); |
| 303 | |
|
615
c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
ysr
parents:
517
diff
changeset
|
304 if (need_prologue && is_shared_heap) { |
|
342
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
11
diff
changeset
|
305 SharedHeap* sh = (SharedHeap*)heap; |
|
37f87013dfd8
6711316: Open source the Garbage-First garbage collector
ysr
parents:
11
diff
changeset
|
306 sh->gc_epilogue(false /* !full */); // release all acquired locks, etc. |
| 0 | 307 } |
| 308 } | |
| 309 | |
| 310 class FindInstanceClosure : public ObjectClosure { | |
| 311 private: | |
| 312 klassOop _klass; | |
| 313 GrowableArray<oop>* _result; | |
| 314 | |
| 315 public: | |
| 316 FindInstanceClosure(klassOop k, GrowableArray<oop>* result) : _klass(k), _result(result) {}; | |
| 317 | |
| 318 void do_object(oop obj) { | |
| 319 if (obj->is_a(_klass)) { | |
| 320 _result->append(obj); | |
| 321 } | |
| 322 } | |
| 323 }; | |
| 324 | |
| 325 void HeapInspection::find_instances_at_safepoint(klassOop k, GrowableArray<oop>* result) { | |
| 326 assert(SafepointSynchronize::is_at_safepoint(), "all threads are stopped"); | |
|
1489
cff162798819
6888953: some calls to function-like macros are missing semicolons
jcoomes
parents:
628
diff
changeset
|
327 assert(Heap_lock->is_locked(), "should have the Heap_lock"); |
| 0 | 328 |
| 329 // Ensure that the heap is parsable | |
| 330 Universe::heap()->ensure_parsability(false); // no need to retire TALBs | |
| 331 | |
| 332 // Iterate over objects in the heap | |
| 333 FindInstanceClosure fic(k, result); | |
|
517
e9be0e04635a
6689653: JMapPerm fails with UseConcMarkSweepIncGC and compressed oops off
jmasa
parents:
356
diff
changeset
|
334 // If this operation encounters a bad object when using CMS, |
|
e9be0e04635a
6689653: JMapPerm fails with UseConcMarkSweepIncGC and compressed oops off
jmasa
parents:
356
diff
changeset
|
335 // consider using safe_object_iterate() which avoids perm gen |
|
e9be0e04635a
6689653: JMapPerm fails with UseConcMarkSweepIncGC and compressed oops off
jmasa
parents:
356
diff
changeset
|
336 // objects that may contain bad references. |
| 0 | 337 Universe::heap()->object_iterate(&fic); |
| 338 } |