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view src/share/vm/runtime/monitorChunk.hpp @ 10405:f2110083203d
8005849: JEP 167: Event-Based JVM Tracing
Reviewed-by: acorn, coleenp, sla
Contributed-by: Karen Kinnear <karen.kinnear@oracle.com>, Bengt Rutisson <bengt.rutisson@oracle.com>, Calvin Cheung <calvin.cheung@oracle.com>, Erik Gahlin <erik.gahlin@oracle.com>, Erik Helin <erik.helin@oracle.com>, Jesper Wilhelmsson <jesper.wilhelmsson@oracle.com>, Keith McGuigan <keith.mcguigan@oracle.com>, Mattias Tobiasson <mattias.tobiasson@oracle.com>, Markus Gronlund <markus.gronlund@oracle.com>, Mikael Auno <mikael.auno@oracle.com>, Nils Eliasson <nils.eliasson@oracle.com>, Nils Loodin <nils.loodin@oracle.com>, Rickard Backman <rickard.backman@oracle.com>, Staffan Larsen <staffan.larsen@oracle.com>, Stefan Karlsson <stefan.karlsson@oracle.com>, Yekaterina Kantserova <yekaterina.kantserova@oracle.com>
author | sla |
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date | Mon, 10 Jun 2013 11:30:51 +0200 |
parents | b9a9ed0f8eeb |
children |
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/* * Copyright (c) 1997, 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. * */ #ifndef SHARE_VM_RUNTIME_MONITORCHUNK_HPP #define SHARE_VM_RUNTIME_MONITORCHUNK_HPP #include "runtime/synchronizer.hpp" // Data structure for holding monitors for one activation during // deoptimization. class MonitorChunk: public CHeapObj<mtInternal> { private: int _number_of_monitors; BasicObjectLock* _monitors; BasicObjectLock* monitors() const { return _monitors; } MonitorChunk* _next; public: // Constructor MonitorChunk(int number_on_monitors); ~MonitorChunk(); // link operations MonitorChunk* next() const { return _next; } void set_next(MonitorChunk* next) { _next = next; } // Tells whether the monitor chunk is linked into the JavaThread bool is_linked() const { return next() != NULL; } // Returns the number of monitors int number_of_monitors() const { return _number_of_monitors; } // Returns the index'th monitor BasicObjectLock* at(int index) { assert(index >= 0 && index < number_of_monitors(), "out of bounds check"); return &monitors()[index]; } // Memory management void oops_do(OopClosure* f); // Tells whether the addr point into the monitors. bool contains(void* addr) const { return (addr >= (void*) monitors()) && (addr < (void*) (monitors() + number_of_monitors())); } }; #endif // SHARE_VM_RUNTIME_MONITORCHUNK_HPP