108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
/*
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* Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP
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#define SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP
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#include "runtime/objectMonitor.hpp"
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#include "utilities/growableArray.hpp"
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//
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// class JvmtiRawMonitor
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//
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// Used by JVMTI methods: All RawMonitor methods (CreateRawMonitor, EnterRawMonitor, etc.)
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//
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// Wrapper for ObjectMonitor class that saves the Monitor's name
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//
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class JvmtiRawMonitor : public ObjectMonitor {
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private:
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int _magic;
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char * _name;
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// JVMTI_RM_MAGIC is set in contructor and unset in destructor.
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enum { JVMTI_RM_MAGIC = (int)(('T' << 24) | ('I' << 16) | ('R' << 8) | 'M') };
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int SimpleEnter (Thread * Self) ;
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int SimpleExit (Thread * Self) ;
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int SimpleWait (Thread * Self, jlong millis) ;
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int SimpleNotify (Thread * Self, bool All) ;
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public:
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JvmtiRawMonitor(const char *name);
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~JvmtiRawMonitor();
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int raw_enter(TRAPS);
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int raw_exit(TRAPS);
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int raw_wait(jlong millis, bool interruptable, TRAPS);
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int raw_notify(TRAPS);
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int raw_notifyAll(TRAPS);
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int magic() { return _magic; }
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const char *get_name() { return _name; }
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bool is_valid();
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};
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// Onload pending raw monitors
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// Class is used to cache onload or onstart monitor enter
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// which will transition into real monitor when
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// VM is fully initialized.
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class JvmtiPendingMonitors : public AllStatic {
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private:
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static GrowableArray<JvmtiRawMonitor*> *_monitors; // Cache raw monitor enter
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inline static GrowableArray<JvmtiRawMonitor*>* monitors() { return _monitors; }
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static void dispose() {
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delete monitors();
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}
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public:
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static void enter(JvmtiRawMonitor *monitor) {
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monitors()->append(monitor);
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}
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static int count() {
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return monitors()->length();
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}
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static void destroy(JvmtiRawMonitor *monitor) {
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while (monitors()->contains(monitor)) {
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monitors()->remove(monitor);
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}
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}
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// Return false if monitor is not found in the list.
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static bool exit(JvmtiRawMonitor *monitor) {
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if (monitors()->contains(monitor)) {
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monitors()->remove(monitor);
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return true;
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} else {
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return false;
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}
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}
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static void transition_raw_monitors();
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};
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#endif // SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP
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