Mercurial > hg > truffle
annotate src/share/vm/services/heapDumper.hpp @ 8733:9def4075da6d
8008079: G1: Add nextObject routine to CMBitMapRO and replace nextWord
Summary: Update the task local finger to the start of the next object when marking aborts, in order to avoid the redundant scanning of all 0's when the marking task restarts, if otherwise updating to the next word. In addition, reuse the routine nextObject() in routine iterate().
Reviewed-by: johnc, ysr
Contributed-by: tamao <tao.mao@oracle.com>
| author | tamao |
|---|---|
| date | Tue, 05 Mar 2013 15:36:56 -0800 |
| parents | fb19af007ffc |
| children |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 2005, 2012, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_SERVICES_HEAPDUMPER_HPP |
| 26 #define SHARE_VM_SERVICES_HEAPDUMPER_HPP | |
| 27 | |
| 28 #include "memory/allocation.hpp" | |
| 29 #include "oops/oop.hpp" | |
| 30 #include "runtime/os.hpp" | |
| 31 | |
| 0 | 32 // HeapDumper is used to dump the java heap to file in HPROF binary format: |
| 33 // | |
| 34 // { HeapDumper dumper(true /* full GC before heap dump */); | |
| 35 // if (dumper.dump("/export/java.hprof")) { | |
| 36 // ResourceMark rm; | |
| 37 // tty->print_cr("Dump failed: %s", dumper.error_as_C_string()); | |
| 38 // } else { | |
| 39 // // dump succeeded | |
| 40 // } | |
| 41 // } | |
| 42 // | |
| 43 | |
| 44 class HeapDumper : public StackObj { | |
| 45 private: | |
| 46 char* _error; | |
| 47 bool _print_to_tty; | |
| 48 bool _gc_before_heap_dump; | |
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49 bool _oome; |
| 0 | 50 elapsedTimer _t; |
| 51 | |
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52 HeapDumper(bool gc_before_heap_dump, bool print_to_tty, bool oome) : |
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53 _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(print_to_tty), _oome(oome) { } |
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54 |
| 0 | 55 // string representation of error |
| 56 char* error() const { return _error; } | |
| 57 void set_error(char* error); | |
| 58 | |
| 59 // indicates if progress messages can be sent to tty | |
| 60 bool print_to_tty() const { return _print_to_tty; } | |
| 61 | |
| 62 // internal timer. | |
| 63 elapsedTimer* timer() { return &_t; } | |
| 64 | |
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65 static void dump_heap(bool oome); |
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66 |
| 0 | 67 public: |
| 68 HeapDumper(bool gc_before_heap_dump) : | |
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69 _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(false), _oome(false) { } |
| 0 | 70 |
| 71 ~HeapDumper(); | |
| 72 | |
| 73 // dumps the heap to the specified file, returns 0 if success. | |
| 74 int dump(const char* path); | |
| 75 | |
| 76 // returns error message (resource allocated), or NULL if no error | |
| 77 char* error_as_C_string() const; | |
| 78 | |
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79 static void dump_heap() NOT_SERVICES_RETURN; |
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80 |
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81 static void dump_heap_from_oome() NOT_SERVICES_RETURN; |
| 0 | 82 }; |
| 1972 | 83 |
| 84 #endif // SHARE_VM_SERVICES_HEAPDUMPER_HPP |