1 files changed, 107 insertions, 0 deletions
diff --git a/core/command_queue_mt.cpp b/core/command_queue_mt.cpp
new file mode 100644
index 0000000000..78151b858f
--- /dev/null
+++ b/core/command_queue_mt.cpp
@@ -0,0 +1,107 @@
+/*************************************************************************/
+/*  command_queue_mt.cpp                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                 */
+/*                                                                       */
+/* 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 "command_queue_mt.h"
+#include "os/os.h"
+
+void CommandQueueMT::lock() {
+
+	if (mutex)
+		mutex->lock();
+}
+
+void CommandQueueMT::unlock() {
+
+	if (mutex)
+		mutex->unlock();
+}
+
+void CommandQueueMT::wait_for_flush() {
+
+	// wait one millisecond for a flush to happen
+	OS::get_singleton()->delay_usec(1000);
+}
+
+CommandQueueMT::SyncSemaphore* CommandQueueMT::_alloc_sync_sem() {
+
+	int idx=-1;
+
+	while(true) {
+
+		for(int i=0;i<SYNC_SEMAPHORES;i++) {
+
+			if (!sync_sems[i].in_use) {
+				sync_sems[i].in_use=true;
+				idx=i;
+				break;
+			}
+		}
+
+		if (idx==-1) {
+			wait_for_flush();
+		} else {
+			break;
+		}
+	}
+
+	return &sync_sems[idx];
+}
+
+
+CommandQueueMT::CommandQueueMT(bool p_sync){
+
+	read_ptr=0;
+	write_ptr=0;	
+	mutex = Mutex::create();
+
+	for(int i=0;i<SYNC_SEMAPHORES;i++) {
+
+		sync_sems[i].sem=Semaphore::create();
+		sync_sems[i].in_use=false;
+
+
+	}
+	if (p_sync)
+		sync = Semaphore::create();
+	else
+		sync=NULL;
+}
+
+
+CommandQueueMT::~CommandQueueMT() {
+
+	if (sync)
+		memdelete(sync);
+	memdelete(mutex);
+	for(int i=0;i<SYNC_SEMAPHORES;i++) {
+
+		memdelete(sync_sems[i].sem);
+	}
+}
+
+