X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftrunk%2Fsrc%2Fsynfig%2Fmutex.cpp;fp=synfig-core%2Ftrunk%2Fsrc%2Fsynfig%2Fmutex.cpp;h=4ede578bd5e0aeeb413a57e87f774d8e1096f875;hb=e3acc0b267b14fda5db3c7bbb2f218b993ef84b3;hp=0000000000000000000000000000000000000000;hpb=ced68168d8518aac837f20e73bcd1e84a6bd6178;p=synfig.git

diff --git a/synfig-core/trunk/src/synfig/mutex.cpp b/synfig-core/trunk/src/synfig/mutex.cpp
new file mode 100644
index 0000000..4ede578
--- /dev/null
+++ b/synfig-core/trunk/src/synfig/mutex.cpp
@@ -0,0 +1,303 @@
+/* === S I N F G =========================================================== */
+/*!	\file mutex.cpp
+**	\brief Template File
+**
+**	$Id: mutex.cpp,v 1.3 2005/01/12 00:55:46 darco Exp $
+**
+**	\legal
+**	Copyright (c) 2002 Robert B. Quattlebaum Jr.
+**
+**	This software and associated documentation
+**	are CONFIDENTIAL and PROPRIETARY property of
+**	the above-mentioned copyright holder.
+**
+**	You may not copy, print, publish, or in any
+**	other way distribute this software without
+**	a prior written agreement with
+**	the copyright holder.
+**	\endlegal
+*/
+/* ========================================================================= */
+
+/* === H E A D E R S ======================================================= */
+
+#ifdef USING_PCH
+#	include "pch.h"
+#else
+#ifdef HAVE_CONFIG_H
+#	include <config.h>
+#endif
+
+#include "mutex.h"
+
+#ifdef HAVE_LIBPTHREAD
+#define USING_PTHREADS 1
+#else
+#ifdef _WIN32
+#define USING_WIN32_THREADS 1
+#endif
+#endif
+
+#ifdef USING_WIN32_THREADS
+#include <windows.h>
+#endif
+
+#ifdef USING_PTHREADS
+#include <pthread.h>
+#endif
+
+#endif
+
+/* === U S I N G =========================================================== */
+
+//using namespace std;
+//using namespace etl;
+using namespace sinfg;
+
+/* === M A C R O S ========================================================= */
+
+/* === G L O B A L S ======================================================= */
+
+/* === P R O C E D U R E S ================================================= */
+
+/* === M E T H O D S ======================================================= */
+
+
+
+
+
+
+bool
+Mutex::is_locked()
+{
+	if(try_lock())
+	{
+		unlock();
+		return false;
+	}
+	return true;
+}
+
+void
+RecMutex::unlock_all()
+{
+	while(is_locked()) unlock();
+}
+
+#ifdef USING_PTHREADS
+Mutex::Mutex()
+{
+	pthread_mutex_t*const mtx_ptr(new pthread_mutex_t);
+
+	pthread_mutexattr_t attr;
+	pthread_mutexattr_init(&attr);
+
+	//#ifdef PTHREAD_PRIO_INHERIT
+	//pthread_mutexattr_setprioceiling(&attr,PTHREAD_PRIO_INHERIT);
+	//#endif
+
+	//#ifdef PTHREAD_MUTEX_RECURSIVE
+	//pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
+	//#endif
+
+	pthread_mutex_init(mtx_ptr,&attr);
+	pthread_mutexattr_destroy(&attr);
+	
+	blackbox=mtx_ptr;
+}
+
+Mutex::~Mutex()
+{
+	pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+	pthread_mutex_destroy(mtx_ptr);
+	delete mtx_ptr;
+}
+
+void
+Mutex::lock()
+{
+	pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+	pthread_mutex_lock(mtx_ptr);
+}
+
+void
+Mutex::unlock()
+{
+	pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+	pthread_mutex_unlock(mtx_ptr);
+}
+
+bool
+Mutex::try_lock()
+{
+	pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+	return !(bool) pthread_mutex_trylock(mtx_ptr);
+}
+
+
+RecMutex::RecMutex()
+{
+	pthread_mutex_t*const mtx_ptr(static_cast<pthread_mutex_t*>(blackbox));
+	pthread_mutexattr_t attr;
+
+	// Backtrack and get rid of the non-recursive mutex
+	pthread_mutex_destroy(mtx_ptr);
+
+	pthread_mutexattr_init(&attr);
+
+	pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
+
+	pthread_mutex_init(mtx_ptr,&attr);
+	pthread_mutexattr_destroy(&attr);
+}
+
+
+
+RWLock::RWLock()
+{
+	pthread_rwlock_t*const rwlock_ptr(new pthread_rwlock_t);
+	
+	pthread_rwlock_init(rwlock_ptr, NULL);
+	
+	blackbox=rwlock_ptr;
+}
+
+RWLock::~RWLock()
+{
+	pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+	pthread_rwlock_destroy(rwlock_ptr);
+	
+	delete rwlock_ptr;
+}
+
+void
+RWLock::reader_lock()
+{
+	pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+	pthread_rwlock_rdlock(rwlock_ptr);
+}
+
+void
+RWLock::reader_unlock()
+{
+	pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+	pthread_rwlock_unlock(rwlock_ptr);
+}
+
+bool
+RWLock::reader_trylock()
+{
+	pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+	return !pthread_rwlock_tryrdlock(rwlock_ptr);
+}
+
+void
+RWLock::writer_lock()
+{
+	pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+	pthread_rwlock_wrlock(rwlock_ptr);
+}
+
+void
+RWLock::writer_unlock()
+{
+	pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+	pthread_rwlock_unlock(rwlock_ptr);
+}
+
+bool
+RWLock::writer_trylock()
+{
+	pthread_rwlock_t*const rwlock_ptr(static_cast<pthread_rwlock_t*>(blackbox));
+
+	return !pthread_rwlock_trywrlock(rwlock_ptr);
+}
+
+#endif
+
+#ifdef USING_WIN32_THREADS
+Mutex::Mutex()
+{
+	HANDLE& mtx(*reinterpret_cast<HANDLE*>(&blackbox));
+	mtx=CreateMutex(NULL, FALSE, NULL);
+}
+
+Mutex::~Mutex()
+{
+	HANDLE mtx(reinterpret_cast<HANDLE>(blackbox));
+	CloseHandle(mtx);
+}
+
+void
+Mutex::lock()
+{
+	HANDLE mtx(reinterpret_cast<HANDLE>(blackbox));
+	WaitForSingleObject(mtx, INFINITE);
+}
+
+void
+Mutex::unlock()
+{
+	HANDLE mtx(reinterpret_cast<HANDLE>(blackbox));
+	ReleaseMutex(mtx);
+}
+
+bool
+Mutex::try_lock()
+{
+	HANDLE mtx(reinterpret_cast<HANDLE>(blackbox));
+	return WaitForSingleObject(mtx, 0)==WAIT_FAILED;
+}
+
+
+RecMutex::RecMutex()
+{
+	// Win32 mutexes are recursive by default.
+}
+
+
+RWLock::RWLock()
+{
+}
+
+RWLock::~RWLock()
+{
+}
+
+void
+RWLock::reader_lock()
+{
+}
+
+void
+RWLock::reader_unlock()
+{
+}
+
+bool
+RWLock::reader_trylock()
+{
+}
+
+void
+RWLock::writer_lock()
+{
+}
+
+void
+RWLock::writer_unlock()
+{
+}
+
+bool
+RWLock::writer_trylock()
+{
+}
+
+#endif