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/*
* Copyright (c) 1999, 2013, 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_PRIMS_JVMTIRAWMONITOR_HPP
#define SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP
#include "runtime/objectMonitor.hpp"
#include "utilities/growableArray.hpp"
//
// class JvmtiRawMonitor
//
// Used by JVMTI methods: All RawMonitor methods (CreateRawMonitor, EnterRawMonitor, etc.)
//
// Wrapper for ObjectMonitor class that saves the Monitor's name
//
class JvmtiRawMonitor : public ObjectMonitor {
private:
int _magic;
char * _name;
// JVMTI_RM_MAGIC is set in contructor and unset in destructor.
enum { JVMTI_RM_MAGIC = (int)(('T' << 24) | ('I' << 16) | ('R' << 8) | 'M') };
int SimpleEnter (Thread * Self) ;
int SimpleExit (Thread * Self) ;
int SimpleWait (Thread * Self, jlong millis) ;
int SimpleNotify (Thread * Self, bool All) ;
public:
JvmtiRawMonitor(const char *name);
~JvmtiRawMonitor();
int raw_enter(TRAPS);
int raw_exit(TRAPS);
int raw_wait(jlong millis, bool interruptable, TRAPS);
int raw_notify(TRAPS);
int raw_notifyAll(TRAPS);
int magic() { return _magic; }
const char *get_name() { return _name; }
bool is_valid();
};
// Onload pending raw monitors
// Class is used to cache onload or onstart monitor enter
// which will transition into real monitor when
// VM is fully initialized.
class JvmtiPendingMonitors : public AllStatic {
private:
static GrowableArray<JvmtiRawMonitor*> *_monitors; // Cache raw monitor enter
inline static GrowableArray<JvmtiRawMonitor*>* monitors() { return _monitors; }
static void dispose() {
delete monitors();
}
public:
static void enter(JvmtiRawMonitor *monitor) {
monitors()->append(monitor);
}
static int count() {
return monitors()->length();
}
static void destroy(JvmtiRawMonitor *monitor) {
while (monitors()->contains(monitor)) {
monitors()->remove(monitor);
}
}
// Return false if monitor is not found in the list.
static bool exit(JvmtiRawMonitor *monitor) {
if (monitors()->contains(monitor)) {
monitors()->remove(monitor);
return true;
} else {
return false;
}
}
static void transition_raw_monitors();
};
#endif // SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP
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