Engine directory for ticket #1

Engine/source/platformX86UNIX/threads/mutex.cpp

@@ -0,0 +1,76 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "console/console.h"
+#include "platformX86UNIX/platformX86UNIX.h"
+#include "platform/threads/mutex.h"
+#include "core/util/safeDelete.h"
+
+#include <pthread.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+struct PlatformMutexData
+{
+   pthread_mutex_t mutex;
+};
+
+Mutex::Mutex()
+{
+   mData = new PlatformMutexData;
+   pthread_mutexattr_t attr;
+
+   pthread_mutexattr_init(&attr);
+   pthread_mutexattr_settype(&attr,PTHREAD_MUTEX_RECURSIVE);
+
+   pthread_mutex_init(&mData->mutex, &attr);
+}
+
+Mutex::~Mutex()
+{
+   AssertFatal(mData, "Mutex::destroyMutex: invalid mutex");
+   pthread_mutex_destroy(&mData->mutex);
+   SAFE_DELETE(mData);
+}
+
+bool Mutex::lock(bool block)
+{
+   if(mData == NULL)
+      return false;
+   if(block)
+   {
+	   return pthread_mutex_lock(&mData->mutex) == 0;
+   }
+   else
+   {
+	   return pthread_mutex_trylock(&mData->mutex) == 0;
+   }
+}
+
+void Mutex::unlock()
+{
+   if(mData == NULL)
+      return;
+   pthread_mutex_unlock(&mData->mutex);
+}