Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/shared/vmGCOperations.hpp @ 615:c6c601a0f2d6
6797870: Add -XX:+{HeapDump,PrintClassHistogram}{Before,After}FullGC
Summary: Call newly created CollectedHeap::dump_{pre,post}_full_gc before and after every stop-world full collection cycle on GenCollectedHeap and ParallelScavengeHeap. (Support for G1CollectedHeap forthcoming under CR 6810861.) Small modifications to existing heap dumping and class histogram implementation, especially to allow multiple on-the-fly histos/dumps by the VM thread during a single safepoint.
Reviewed-by: jmasa, alanb, mchung
| author | ysr |
|---|---|
| date | Mon, 02 Mar 2009 16:37:04 -0800 |
| parents | d1605aabd0a1 |
| children | 0bfd3fb24150 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 2005-2008 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 // The following class hierarchy represents | |
| 26 // a set of operations (VM_Operation) related to GC. | |
| 27 // | |
| 28 // VM_Operation | |
| 29 // VM_GC_Operation | |
| 30 // VM_GC_HeapInspection | |
| 31 // VM_GenCollectForAllocation | |
| 32 // VM_GenCollectFull | |
| 33 // VM_GenCollectFullConcurrent | |
| 34 // VM_ParallelGCFailedAllocation | |
| 35 // VM_ParallelGCFailedPermanentAllocation | |
| 36 // VM_ParallelGCSystemGC | |
| 37 // VM_GC_Operation | |
| 38 // - implements methods common to all classes in the hierarchy: | |
| 39 // prevents multiple gc requests and manages lock on heap; | |
| 40 // | |
| 41 // VM_GC_HeapInspection | |
| 42 // - prints class histogram on SIGBREAK if PrintClassHistogram | |
| 43 // is specified; and also the attach "inspectheap" operation | |
| 44 // | |
| 45 // VM_GenCollectForAllocation | |
|
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46 // VM_GenCollectForPermanentAllocation |
| 0 | 47 // VM_ParallelGCFailedAllocation |
| 48 // VM_ParallelGCFailedPermanentAllocation | |
| 49 // - this operation is invoked when allocation is failed; | |
| 50 // operation performs garbage collection and tries to | |
| 51 // allocate afterwards; | |
| 52 // | |
| 53 // VM_GenCollectFull | |
| 54 // VM_GenCollectFullConcurrent | |
| 55 // VM_ParallelGCSystemGC | |
| 56 // - these operations preform full collection of heaps of | |
| 57 // different kind | |
| 58 // | |
| 59 | |
| 60 class VM_GC_Operation: public VM_Operation { | |
| 61 protected: | |
| 62 BasicLock _pending_list_basic_lock; // for refs pending list notification (PLL) | |
| 63 unsigned int _gc_count_before; // gc count before acquiring PLL | |
| 64 unsigned int _full_gc_count_before; // full gc count before acquiring PLL | |
| 65 bool _full; // whether a "full" collection | |
| 66 bool _prologue_succeeded; // whether doit_prologue succeeded | |
| 67 GCCause::Cause _gc_cause; // the putative cause for this gc op | |
| 68 bool _gc_locked; // will be set if gc was locked | |
| 69 | |
| 70 virtual bool skip_operation() const; | |
| 71 | |
| 72 // java.lang.ref.Reference support | |
| 73 void acquire_pending_list_lock(); | |
| 74 void release_and_notify_pending_list_lock(); | |
| 75 | |
| 76 public: | |
| 77 VM_GC_Operation(unsigned int gc_count_before, | |
| 78 unsigned int full_gc_count_before = 0, | |
| 79 bool full = false) { | |
| 80 _full = full; | |
| 81 _prologue_succeeded = false; | |
| 82 _gc_count_before = gc_count_before; | |
| 83 | |
| 84 // A subclass constructor will likely overwrite the following | |
| 85 _gc_cause = GCCause::_no_cause_specified; | |
| 86 | |
| 87 _gc_locked = false; | |
| 88 | |
| 89 if (full) { | |
| 90 _full_gc_count_before = full_gc_count_before; | |
| 91 } | |
| 92 } | |
| 93 ~VM_GC_Operation() {} | |
| 94 | |
| 95 // Acquire the reference synchronization lock | |
| 96 virtual bool doit_prologue(); | |
| 97 // Do notifyAll (if needed) and release held lock | |
| 98 virtual void doit_epilogue(); | |
| 99 | |
| 100 virtual bool allow_nested_vm_operations() const { return true; } | |
| 101 bool prologue_succeeded() const { return _prologue_succeeded; } | |
| 102 | |
| 103 void set_gc_locked() { _gc_locked = true; } | |
| 104 bool gc_locked() const { return _gc_locked; } | |
| 105 | |
| 106 static void notify_gc_begin(bool full = false); | |
| 107 static void notify_gc_end(); | |
| 108 }; | |
| 109 | |
| 110 | |
| 111 class VM_GC_HeapInspection: public VM_GC_Operation { | |
| 112 private: | |
| 113 outputStream* _out; | |
| 114 bool _full_gc; | |
|
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115 bool _need_prologue; |
| 0 | 116 public: |
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117 VM_GC_HeapInspection(outputStream* out, bool request_full_gc, |
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118 bool need_prologue) : |
| 0 | 119 VM_GC_Operation(0 /* total collections, dummy, ignored */, |
| 120 0 /* total full collections, dummy, ignored */, | |
| 121 request_full_gc) { | |
| 122 _out = out; | |
| 123 _full_gc = request_full_gc; | |
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124 _need_prologue = need_prologue; |
| 0 | 125 } |
| 126 | |
| 127 ~VM_GC_HeapInspection() {} | |
| 128 virtual VMOp_Type type() const { return VMOp_GC_HeapInspection; } | |
| 129 virtual bool skip_operation() const; | |
| 130 virtual bool doit_prologue(); | |
| 131 virtual void doit(); | |
| 132 }; | |
| 133 | |
| 134 | |
| 135 class VM_GenCollectForAllocation: public VM_GC_Operation { | |
| 136 private: | |
| 137 HeapWord* _res; | |
| 138 size_t _size; // size of object to be allocated. | |
| 139 bool _tlab; // alloc is of a tlab. | |
| 140 public: | |
| 141 VM_GenCollectForAllocation(size_t size, | |
| 142 bool tlab, | |
| 143 unsigned int gc_count_before) | |
| 144 : VM_GC_Operation(gc_count_before), | |
| 145 _size(size), | |
| 146 _tlab(tlab) { | |
| 147 _res = NULL; | |
| 148 } | |
| 149 ~VM_GenCollectForAllocation() {} | |
| 150 virtual VMOp_Type type() const { return VMOp_GenCollectForAllocation; } | |
| 151 virtual void doit(); | |
| 152 HeapWord* result() const { return _res; } | |
| 153 }; | |
| 154 | |
| 155 | |
| 156 // VM operation to invoke a collection of the heap as a | |
| 157 // GenCollectedHeap heap. | |
| 158 class VM_GenCollectFull: public VM_GC_Operation { | |
| 159 private: | |
| 160 int _max_level; | |
| 161 public: | |
| 162 VM_GenCollectFull(unsigned int gc_count_before, | |
| 163 unsigned int full_gc_count_before, | |
| 164 GCCause::Cause gc_cause, | |
| 165 int max_level) | |
| 166 : VM_GC_Operation(gc_count_before, full_gc_count_before, true /* full */), | |
| 167 _max_level(max_level) | |
| 168 { _gc_cause = gc_cause; } | |
| 169 ~VM_GenCollectFull() {} | |
| 170 virtual VMOp_Type type() const { return VMOp_GenCollectFull; } | |
| 171 virtual void doit(); | |
| 172 }; | |
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173 |
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c0492d52d55b
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174 class VM_GenCollectForPermanentAllocation: public VM_GC_Operation { |
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c0492d52d55b
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apetrusenko
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175 private: |
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c0492d52d55b
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apetrusenko
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176 HeapWord* _res; |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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177 size_t _size; // size of object to be allocated |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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178 public: |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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179 VM_GenCollectForPermanentAllocation(size_t size, |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
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180 unsigned int gc_count_before, |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
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181 unsigned int full_gc_count_before, |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
0
diff
changeset
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182 GCCause::Cause gc_cause) |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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183 : VM_GC_Operation(gc_count_before, full_gc_count_before, true), |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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184 _size(size) { |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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185 _res = NULL; |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
parents:
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186 _gc_cause = gc_cause; |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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187 } |
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c0492d52d55b
6539517: CR 6186200 should be extended to perm gen allocation to prevent spurious OOM's from perm gen
apetrusenko
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188 ~VM_GenCollectForPermanentAllocation() {} |
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c0492d52d55b
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189 virtual VMOp_Type type() const { return VMOp_GenCollectForPermanentAllocation; } |
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190 virtual void doit(); |
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apetrusenko
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191 HeapWord* result() const { return _res; } |
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192 }; |