Mercurial > hg > truffle
diff src/share/vm/services/heapDumper.hpp @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c6c601a0f2d6 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/services/heapDumper.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,69 @@ +/* + * Copyright 2005-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +// HeapDumper is used to dump the java heap to file in HPROF binary format: +// +// { HeapDumper dumper(true /* full GC before heap dump */); +// if (dumper.dump("/export/java.hprof")) { +// ResourceMark rm; +// tty->print_cr("Dump failed: %s", dumper.error_as_C_string()); +// } else { +// // dump succeeded +// } +// } +// + +class HeapDumper : public StackObj { + private: + char* _error; + bool _print_to_tty; + bool _gc_before_heap_dump; + elapsedTimer _t; + + // string representation of error + char* error() const { return _error; } + void set_error(char* error); + + // indicates if progress messages can be sent to tty + bool print_to_tty() const { return _print_to_tty; } + + // internal timer. + elapsedTimer* timer() { return &_t; } + + public: + HeapDumper(bool gc_before_heap_dump) : + _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(false) { } + HeapDumper(bool gc_before_heap_dump, bool print_to_tty) : + _gc_before_heap_dump(gc_before_heap_dump), _error(NULL), _print_to_tty(print_to_tty) { } + + ~HeapDumper(); + + // dumps the heap to the specified file, returns 0 if success. + int dump(const char* path); + + // returns error message (resource allocated), or NULL if no error + char* error_as_C_string() const; + + static void dump_heap() KERNEL_RETURN; +};