acorn@2233: /*
zgu@4492:  * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
acorn@2233:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
acorn@2233:  *
acorn@2233:  * This code is free software; you can redistribute it and/or modify it
acorn@2233:  * under the terms of the GNU General Public License version 2 only, as
acorn@2233:  * published by the Free Software Foundation.
acorn@2233:  *
acorn@2233:  * This code is distributed in the hope that it will be useful, but WITHOUT
acorn@2233:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
acorn@2233:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
acorn@2233:  * version 2 for more details (a copy is included in the LICENSE file that
acorn@2233:  * accompanied this code).
acorn@2233:  *
acorn@2233:  * You should have received a copy of the GNU General Public License version
acorn@2233:  * 2 along with this work; if not, write to the Free Software Foundation,
acorn@2233:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
acorn@2233:  *
acorn@2233:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
acorn@2233:  * or visit www.oracle.com if you need additional information or have any
acorn@2233:  * questions.
acorn@2233:  *
acorn@2233:  */
acorn@2233: 
stefank@2314: #ifndef SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP
stefank@2314: #define SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP
stefank@2314: 
stefank@2314: #include "runtime/objectMonitor.hpp"
stefank@2314: #include "utilities/growableArray.hpp"
stefank@2314: 
acorn@2233: //
acorn@2233: // class JvmtiRawMonitor
acorn@2233: //
acorn@2233: // Used by JVMTI methods: All RawMonitor methods (CreateRawMonitor, EnterRawMonitor, etc.)
acorn@2233: //
acorn@2233: // Wrapper for ObjectMonitor class that saves the Monitor's name
acorn@2233: //
acorn@2233: 
acorn@2233: class JvmtiRawMonitor : public ObjectMonitor  {
acorn@2233: private:
acorn@2233:   int           _magic;
acorn@2233:   char *        _name;
acorn@2233:   // JVMTI_RM_MAGIC is set in contructor and unset in destructor.
acorn@2233:   enum { JVMTI_RM_MAGIC = (int)(('T' << 24) | ('I' << 16) | ('R' << 8) | 'M') };
acorn@2233: 
acorn@2233:   int       SimpleEnter (Thread * Self) ;
acorn@2233:   int       SimpleExit  (Thread * Self) ;
acorn@2233:   int       SimpleWait  (Thread * Self, jlong millis) ;
acorn@2233:   int       SimpleNotify (Thread * Self, bool All) ;
acorn@2233: 
acorn@2233: public:
acorn@2233:   JvmtiRawMonitor(const char *name);
acorn@2233:   ~JvmtiRawMonitor();
acorn@2233:   int       raw_enter(TRAPS);
acorn@2233:   int       raw_exit(TRAPS);
acorn@2233:   int       raw_wait(jlong millis, bool interruptable, TRAPS);
acorn@2233:   int       raw_notify(TRAPS);
acorn@2233:   int       raw_notifyAll(TRAPS);
acorn@2233:   int            magic()   { return _magic;  }
acorn@2233:   const char *get_name()   { return _name; }
acorn@2233:   bool        is_valid();
acorn@2233: };
acorn@2233: 
acorn@2233: // Onload pending raw monitors
acorn@2233: // Class is used to cache onload or onstart monitor enter
acorn@2233: // which will transition into real monitor when
acorn@2233: // VM is fully initialized.
acorn@2233: class JvmtiPendingMonitors : public AllStatic {
acorn@2233: 
acorn@2233: private:
acorn@2233:   static GrowableArray<JvmtiRawMonitor*> *_monitors; // Cache raw monitor enter
acorn@2233: 
acorn@2233:   inline static GrowableArray<JvmtiRawMonitor*>* monitors() { return _monitors; }
acorn@2233: 
acorn@2233:   static void dispose() {
acorn@2233:     delete monitors();
acorn@2233:   }
acorn@2233: 
acorn@2233: public:
acorn@2233:   static void enter(JvmtiRawMonitor *monitor) {
acorn@2233:     monitors()->append(monitor);
acorn@2233:   }
acorn@2233: 
acorn@2233:   static int count() {
acorn@2233:     return monitors()->length();
acorn@2233:   }
acorn@2233: 
acorn@2233:   static void destroy(JvmtiRawMonitor *monitor) {
acorn@2233:     while (monitors()->contains(monitor)) {
acorn@2233:       monitors()->remove(monitor);
acorn@2233:     }
acorn@2233:   }
acorn@2233: 
acorn@2233:   // Return false if monitor is not found in the list.
acorn@2233:   static bool exit(JvmtiRawMonitor *monitor) {
acorn@2233:     if (monitors()->contains(monitor)) {
acorn@2233:       monitors()->remove(monitor);
acorn@2233:       return true;
acorn@2233:     } else {
acorn@2233:       return false;
acorn@2233:     }
acorn@2233:   }
acorn@2233: 
acorn@2233:   static void transition_raw_monitors();
acorn@2233: };
stefank@2314: 
stefank@2314: #endif // SHARE_VM_PRIMS_JVMTIRAWMONITOR_HPP