Mercurial > hg > graal-compiler
view src/share/vm/services/memoryUsage.hpp @ 396:4d05b7cb7842
6306922: Dump dump created by +HeapDumpOnOutOfMemoryError should include stack traces for stack roots
Summary: Include stack traces of all threads in the heap dump
Reviewed-by: alanb
author | mchung |
---|---|
date | Tue, 14 Oct 2008 15:16:38 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2003-2005 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. * */ // A memory usage contains the following attributes about memory usage: // initSize - represents the initial amount of memory (in bytes) that // the Java virtual machine requests from the operating system // for memory management. The Java virtual machine may request // additional memory from the operating system later when appropriate. // Its value may be undefined. // used - represents the amount of memory currently used (in bytes). // committed - represents the amount of memory (in bytes) that is // guaranteed to be available for use by the Java virtual machine. // The amount of committed memory may change over time (increase // or decrease). It is guaranteed to be greater than or equal // to initSize. // maxSize - represents the maximum amount of memory (in bytes) // that can be used for memory management. The maximum amount of // memory for memory management could be less than the amount of // committed memory. Its value may be undefined. class MemoryUsage VALUE_OBJ_CLASS_SPEC { private: size_t _initSize; size_t _used; size_t _committed; size_t _maxSize; public: // Constructors MemoryUsage(size_t i, size_t u, size_t c, size_t m) : _initSize(i), _used(u), _committed(c), _maxSize(m) {}; MemoryUsage() : _initSize(0), _used(0), _committed(0), _maxSize(0) {}; size_t init_size() const { return _initSize; } size_t used() const { return _used; } size_t committed() const { return _committed; } size_t max_size() const { return _maxSize; } inline static jlong convert_to_jlong(size_t val) { // In the 64-bit vm, a size_t can overflow a jlong (which is signed). jlong ret; if (val == (size_t)-1) { ret = -1L; } else { NOT_LP64(ret = val;) LP64_ONLY(ret = MIN2(val, (size_t)max_jlong);) } return ret; } jlong init_size_as_jlong() const { return convert_to_jlong(_initSize); } jlong used_as_jlong() const { return convert_to_jlong(_used); } jlong committed_as_jlong() const { return convert_to_jlong(_committed); } jlong max_size_as_jlong() const { return convert_to_jlong(_maxSize); } };