Mercurial > hg > truffle
annotate src/share/vm/services/heapDumper.hpp @ 2177:3582bf76420e
6990754: Use native memory and reference counting to implement SymbolTable
Summary: move symbols from permgen into C heap and reference count them
Reviewed-by: never, acorn, jmasa, stefank
| author | coleenp |
|---|---|
| date | Thu, 27 Jan 2011 16:11:27 -0800 |
| parents | f95d63e2154a |
| children | da91efe96a93 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2005, 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 * | |
|
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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/klassOop.hpp" | |
| 30 #include "oops/oop.hpp" | |
| 31 #include "runtime/os.hpp" | |
| 32 | |
| 0 | 33 // HeapDumper is used to dump the java heap to file in HPROF binary format: |
| 34 // | |
| 35 // { HeapDumper dumper(true /* full GC before heap dump */); | |
| 36 // if (dumper.dump("/export/java.hprof")) { | |
| 37 // ResourceMark rm; | |
| 38 // tty->print_cr("Dump failed: %s", dumper.error_as_C_string()); | |
| 39 // } else { | |
| 40 // // dump succeeded | |
| 41 // } | |
| 42 // } | |
| 43 // | |
| 44 | |
| 45 class HeapDumper : public StackObj { | |
| 46 private: | |
| 47 char* _error; | |
| 48 bool _print_to_tty; | |
| 49 bool _gc_before_heap_dump; | |
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50 bool _oome; |
| 0 | 51 elapsedTimer _t; |
| 52 | |
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53 HeapDumper(bool gc_before_heap_dump, bool print_to_tty, bool oome) : |
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54 _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(print_to_tty), _oome(oome) { } |
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55 |
| 0 | 56 // string representation of error |
| 57 char* error() const { return _error; } | |
| 58 void set_error(char* error); | |
| 59 | |
| 60 // indicates if progress messages can be sent to tty | |
| 61 bool print_to_tty() const { return _print_to_tty; } | |
| 62 | |
| 63 // internal timer. | |
| 64 elapsedTimer* timer() { return &_t; } | |
| 65 | |
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66 static void dump_heap(bool oome); |
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67 |
| 0 | 68 public: |
| 69 HeapDumper(bool gc_before_heap_dump) : | |
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70 _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(false), _oome(false) { } |
| 0 | 71 |
| 72 ~HeapDumper(); | |
| 73 | |
| 74 // dumps the heap to the specified file, returns 0 if success. | |
| 75 int dump(const char* path); | |
| 76 | |
| 77 // returns error message (resource allocated), or NULL if no error | |
| 78 char* error_as_C_string() const; | |
| 79 | |
| 80 static void dump_heap() KERNEL_RETURN; | |
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81 |
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82 static void dump_heap_from_oome() KERNEL_RETURN; |
| 0 | 83 }; |
| 1972 | 84 |
| 85 #endif // SHARE_VM_SERVICES_HEAPDUMPER_HPP |