Mercurial > hg > graal-compiler
view src/share/vm/services/memPtr.cpp @ 7971:4102b59539ce
8005012: Add WB APIs to better support NMT testing
Summary: Add WB API functions to enable better NMT testing
Reviewed-by: dholmes, zgu
author | ctornqvi |
---|---|
date | Fri, 01 Feb 2013 23:48:08 +0100 |
parents | 716c64bda5ba |
children | baa7927dfbd2 |
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/* * Copyright (c) 2012, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "services/memPtr.hpp" #include "services/memTracker.hpp" volatile jint SequenceGenerator::_seq_number = 1; volatile unsigned long SequenceGenerator::_generation = 1; NOT_PRODUCT(jint SequenceGenerator::_max_seq_number = 1;) jint SequenceGenerator::next() { jint seq = Atomic::add(1, &_seq_number); if (seq < 0) { MemTracker::shutdown(MemTracker::NMT_sequence_overflow); } assert(seq > 0, "counter overflow"); NOT_PRODUCT(_max_seq_number = (seq > _max_seq_number) ? seq : _max_seq_number;) return seq; }