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src/share/vm/services/heapDumper.hpp@833b0f92429a (annotated)
src/share/vm/services/heapDumper.hpp
Wed, 27 Aug 2014 08:19:12 -0400
- author
- zgu
- date
- Wed, 27 Aug 2014 08:19:12 -0400
- changeset 7074
- 833b0f92429a
- parent 4165
- fb19af007ffc
- child 6876
- 710a3c8b516e
- permissions
- -rw-r--r--
8046598: Scalable Native memory tracking development
Summary: Enhance scalability of native memory tracking
Reviewed-by: coleenp, ctornqvi, gtriantafill
| duke@435 | 1 | /* |
| coleenp@4037 | 2 | * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. |
| duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| duke@435 | 4 | * |
| duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
| duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| duke@435 | 7 | * published by the Free Software Foundation. |
| duke@435 | 8 | * |
| duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| duke@435 | 13 | * accompanied this code). |
| duke@435 | 14 | * |
| duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
| duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| duke@435 | 18 | * |
| trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
| trims@1907 | 21 | * questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| stefank@2314 | 25 | #ifndef SHARE_VM_SERVICES_HEAPDUMPER_HPP |
| stefank@2314 | 26 | #define SHARE_VM_SERVICES_HEAPDUMPER_HPP |
| stefank@2314 | 27 | |
| stefank@2314 | 28 | #include "memory/allocation.hpp" |
| stefank@2314 | 29 | #include "oops/oop.hpp" |
| stefank@2314 | 30 | #include "runtime/os.hpp" |
| stefank@2314 | 31 | |
| duke@435 | 32 | // HeapDumper is used to dump the java heap to file in HPROF binary format: |
| duke@435 | 33 | // |
| duke@435 | 34 | // { HeapDumper dumper(true /* full GC before heap dump */); |
| duke@435 | 35 | // if (dumper.dump("/export/java.hprof")) { |
| duke@435 | 36 | // ResourceMark rm; |
| duke@435 | 37 | // tty->print_cr("Dump failed: %s", dumper.error_as_C_string()); |
| duke@435 | 38 | // } else { |
| duke@435 | 39 | // // dump succeeded |
| duke@435 | 40 | // } |
| duke@435 | 41 | // } |
| duke@435 | 42 | // |
| duke@435 | 43 | |
| duke@435 | 44 | class HeapDumper : public StackObj { |
| duke@435 | 45 | private: |
| duke@435 | 46 | char* _error; |
| duke@435 | 47 | bool _print_to_tty; |
| duke@435 | 48 | bool _gc_before_heap_dump; |
| thurka@2130 | 49 | bool _oome; |
| duke@435 | 50 | elapsedTimer _t; |
| duke@435 | 51 | |
| thurka@2130 | 52 | HeapDumper(bool gc_before_heap_dump, bool print_to_tty, bool oome) : |
| thurka@2130 | 53 | _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(print_to_tty), _oome(oome) { } |
| thurka@2130 | 54 | |
| duke@435 | 55 | // string representation of error |
| duke@435 | 56 | char* error() const { return _error; } |
| duke@435 | 57 | void set_error(char* error); |
| duke@435 | 58 | |
| duke@435 | 59 | // indicates if progress messages can be sent to tty |
| duke@435 | 60 | bool print_to_tty() const { return _print_to_tty; } |
| duke@435 | 61 | |
| duke@435 | 62 | // internal timer. |
| duke@435 | 63 | elapsedTimer* timer() { return &_t; } |
| duke@435 | 64 | |
| thurka@2130 | 65 | static void dump_heap(bool oome); |
| thurka@2130 | 66 | |
| duke@435 | 67 | public: |
| duke@435 | 68 | HeapDumper(bool gc_before_heap_dump) : |
| thurka@2130 | 69 | _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(false), _oome(false) { } |
| duke@435 | 70 | |
| duke@435 | 71 | ~HeapDumper(); |
| duke@435 | 72 | |
| duke@435 | 73 | // dumps the heap to the specified file, returns 0 if success. |
| duke@435 | 74 | int dump(const char* path); |
| duke@435 | 75 | |
| duke@435 | 76 | // returns error message (resource allocated), or NULL if no error |
| duke@435 | 77 | char* error_as_C_string() const; |
| duke@435 | 78 | |
| jprovino@4165 | 79 | static void dump_heap() NOT_SERVICES_RETURN; |
| thurka@2130 | 80 | |
| jprovino@4165 | 81 | static void dump_heap_from_oome() NOT_SERVICES_RETURN; |
| duke@435 | 82 | }; |
| stefank@2314 | 83 | |
| stefank@2314 | 84 | #endif // SHARE_VM_SERVICES_HEAPDUMPER_HPP |
