1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/share/vm/services/heapDumper.hpp Wed Apr 27 01:25:04 2016 +0800 1.3 @@ -0,0 +1,84 @@ 1.4 +/* 1.5 + * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. 1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 1.7 + * 1.8 + * This code is free software; you can redistribute it and/or modify it 1.9 + * under the terms of the GNU General Public License version 2 only, as 1.10 + * published by the Free Software Foundation. 1.11 + * 1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT 1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1.15 + * version 2 for more details (a copy is included in the LICENSE file that 1.16 + * accompanied this code). 1.17 + * 1.18 + * You should have received a copy of the GNU General Public License version 1.19 + * 2 along with this work; if not, write to the Free Software Foundation, 1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1.21 + * 1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 1.23 + * or visit www.oracle.com if you need additional information or have any 1.24 + * questions. 1.25 + * 1.26 + */ 1.27 + 1.28 +#ifndef SHARE_VM_SERVICES_HEAPDUMPER_HPP 1.29 +#define SHARE_VM_SERVICES_HEAPDUMPER_HPP 1.30 + 1.31 +#include "memory/allocation.hpp" 1.32 +#include "oops/oop.hpp" 1.33 +#include "runtime/os.hpp" 1.34 + 1.35 +// HeapDumper is used to dump the java heap to file in HPROF binary format: 1.36 +// 1.37 +// { HeapDumper dumper(true /* full GC before heap dump */); 1.38 +// if (dumper.dump("/export/java.hprof")) { 1.39 +// ResourceMark rm; 1.40 +// tty->print_cr("Dump failed: %s", dumper.error_as_C_string()); 1.41 +// } else { 1.42 +// // dump succeeded 1.43 +// } 1.44 +// } 1.45 +// 1.46 + 1.47 +class HeapDumper : public StackObj { 1.48 + private: 1.49 + char* _error; 1.50 + bool _print_to_tty; 1.51 + bool _gc_before_heap_dump; 1.52 + bool _oome; 1.53 + elapsedTimer _t; 1.54 + 1.55 + HeapDumper(bool gc_before_heap_dump, bool print_to_tty, bool oome) : 1.56 + _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(print_to_tty), _oome(oome) { } 1.57 + 1.58 + // string representation of error 1.59 + char* error() const { return _error; } 1.60 + void set_error(char* error); 1.61 + 1.62 + // indicates if progress messages can be sent to tty 1.63 + bool print_to_tty() const { return _print_to_tty; } 1.64 + 1.65 + // internal timer. 1.66 + elapsedTimer* timer() { return &_t; } 1.67 + 1.68 + static void dump_heap(bool oome); 1.69 + 1.70 + public: 1.71 + HeapDumper(bool gc_before_heap_dump) : 1.72 + _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(false), _oome(false) { } 1.73 + 1.74 + ~HeapDumper(); 1.75 + 1.76 + // dumps the heap to the specified file, returns 0 if success. 1.77 + int dump(const char* path); 1.78 + 1.79 + // returns error message (resource allocated), or NULL if no error 1.80 + char* error_as_C_string() const; 1.81 + 1.82 + static void dump_heap() NOT_SERVICES_RETURN; 1.83 + 1.84 + static void dump_heap_from_oome() NOT_SERVICES_RETURN; 1.85 +}; 1.86 + 1.87 +#endif // SHARE_VM_SERVICES_HEAPDUMPER_HPP