Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/services/heapDumper.hpp@a61af66fc99e (annotated)
src/share/vm/services/heapDumper.hpp
Sat, 01 Dec 2007 00:00:00 +0000
- author
- duke
- date
- Sat, 01 Dec 2007 00:00:00 +0000
- changeset 435
- a61af66fc99e
- child 1050
- c6c601a0f2d6
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| duke@435 | 1 | /* |
| duke@435 | 2 | * Copyright 2005-2007 Sun Microsystems, Inc. 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 | * |
| duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| duke@435 | 21 | * have any questions. |
| duke@435 | 22 | * |
| duke@435 | 23 | */ |
| duke@435 | 24 | |
| duke@435 | 25 | // HeapDumper is used to dump the java heap to file in HPROF binary format: |
| duke@435 | 26 | // |
| duke@435 | 27 | // { HeapDumper dumper(true /* full GC before heap dump */); |
| duke@435 | 28 | // if (dumper.dump("/export/java.hprof")) { |
| duke@435 | 29 | // ResourceMark rm; |
| duke@435 | 30 | // tty->print_cr("Dump failed: %s", dumper.error_as_C_string()); |
| duke@435 | 31 | // } else { |
| duke@435 | 32 | // // dump succeeded |
| duke@435 | 33 | // } |
| duke@435 | 34 | // } |
| duke@435 | 35 | // |
| duke@435 | 36 | |
| duke@435 | 37 | class HeapDumper : public StackObj { |
| duke@435 | 38 | private: |
| duke@435 | 39 | char* _error; |
| duke@435 | 40 | bool _print_to_tty; |
| duke@435 | 41 | bool _gc_before_heap_dump; |
| duke@435 | 42 | elapsedTimer _t; |
| duke@435 | 43 | |
| duke@435 | 44 | // string representation of error |
| duke@435 | 45 | char* error() const { return _error; } |
| duke@435 | 46 | void set_error(char* error); |
| duke@435 | 47 | |
| duke@435 | 48 | // indicates if progress messages can be sent to tty |
| duke@435 | 49 | bool print_to_tty() const { return _print_to_tty; } |
| duke@435 | 50 | |
| duke@435 | 51 | // internal timer. |
| duke@435 | 52 | elapsedTimer* timer() { return &_t; } |
| duke@435 | 53 | |
| duke@435 | 54 | public: |
| duke@435 | 55 | HeapDumper(bool gc_before_heap_dump) : |
| duke@435 | 56 | _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(false) { } |
| duke@435 | 57 | HeapDumper(bool gc_before_heap_dump, bool print_to_tty) : |
| duke@435 | 58 | _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(print_to_tty) { } |
| duke@435 | 59 | |
| duke@435 | 60 | ~HeapDumper(); |
| duke@435 | 61 | |
| duke@435 | 62 | // dumps the heap to the specified file, returns 0 if success. |
| duke@435 | 63 | int dump(const char* path); |
| duke@435 | 64 | |
| duke@435 | 65 | // returns error message (resource allocated), or NULL if no error |
| duke@435 | 66 | char* error_as_C_string() const; |
| duke@435 | 67 | |
| duke@435 | 68 | static void dump_heap() KERNEL_RETURN; |
| duke@435 | 69 | }; |
