lock.cpp Source File

00001 /*
00002  *                         Sun Public License Notice
00003  *
00004  * The contents of this file are subject to the Sun Public License
00005  * Version 1.0 (the "License"); you may not use this file except
00006  * in compliance with the License. A copy of the License is available
00007  * at http://www.sun.com/
00008  *
00009  * The Original Code is the Java Profiler module.  The Initial Developers
00010  * of the Original Code are Jan Stola, Pavel Vacha, Michal Pise, Petr Luner,
00011  * Lukas Petru and Marek Przeczek.
00012  *
00013  * Portions created by Jan Stola are Copyright (C) 2000-2001.
00014  * All Rights Reserved.
00015  *
00016  * Portions created by Pavel Vacha are Copyright (C) 2000-2001.
00017  * All Rights Reserved.
00018  *
00019  * Portions created by Michal Pise are Copyright (C) 2000-2001.
00020  * All Rights Reserved.
00021  *
00022  * Portions created by Petr Luner are Copyright (C) 2000-2001.
00023  * All Rights Reserved.
00024  *
00025  * Portions created by Lukas Petru are Copyright (C) 2000-2001.
00026  * All Rights Reserved.
00027  *
00028  * Portions created by Marek Przeczek are Copyright (C) 2000-2001.
00029  * All Rights Reserved.
00030  *
00031  * Contributors: Jan Stola, Pavel Vacha, Michal Pise, Petr Luner,
00032  *               Lukas Petru and Marek Przeczek.
00033  */
00034 
00035 #include "../prof/lock.h"
00036 #include "../prof/prof.h"
00037 
00038 Lock::Lock( const String& name, JVMPI_Interface* jvmpi) {
00039 
00040 #ifdef USE_RAW_MONITORS
00041         if( !jvmpi) jvmpi = Prof::prof().jvmpiInterface;
00042         _rm = jvmpi->RawMonitorCreate( (char*)(const char*)name);
00043 #else           
00044 #ifdef WIN32
00045         InitializeCriticalSection( &cs);
00046 #else
00047         pthread_mutex_init( &cs, NULL);
00048 #endif
00049 #endif
00050 }
00051 
00052 Lock::~Lock() { 
00053 
00054         /* don't try to destroy the lock, someone else
00055          * (another thread) can be still using it;
00056          * the lock will be destroyed automatically
00057          * by system after JVM process finished
00058          * (or was killed) */
00059 }
00060 
00061 void Lock::wait() {
00062 
00063 #ifdef USE_RAW_MONITORS
00064         Prof::prof().jvmpiInterface->RawMonitorEnter( _rm);
00065 #else
00066 #ifdef WIN32
00067         EnterCriticalSection( &cs);
00068 #else
00069         pthread_mutex_lock( &cs);
00070 #endif
00071 #endif
00072 }
00073 
00074 void Lock::release() {
00075 
00076 #ifdef USE_RAW_MONITORS
00077         Prof::prof().jvmpiInterface->RawMonitorExit( _rm);
00078 #else           
00079 #ifdef WIN32
00080         LeaveCriticalSection( &cs);
00081 #else
00082         pthread_mutex_unlock( &cs);
00083 #endif
00084 #endif
00085 }