1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/unix/semaphore_posix.cpp b/drivers/unix/semaphore_posix.cpp
new file mode 100644
index 0000000000..6f1b8931f9
--- /dev/null
+++ b/drivers/unix/semaphore_posix.cpp
@@ -0,0 +1,89 @@
+/*************************************************************************/
+/*  semaphore_posix.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 "semaphore_posix.h"
+
+#if defined(UNIX_ENABLED) || defined(PTHREAD_ENABLED)
+
+#include "os/memory.h"
+#include <errno.h>
+#include <stdio.h>
+
+Error SemaphorePosix::wait() {
+
+
+	while(sem_wait(&sem)) {
+		if (errno==EINTR) {
+			errno=0;
+			continue;
+		} else {
+perror("sem waiting");
+			return ERR_BUSY;
+		}
+	}
+	return OK;
+}
+
+Error SemaphorePosix::post() {
+
+	return (sem_post(&sem)==0)?OK:ERR_BUSY; 
+}
+int SemaphorePosix::get() const {
+
+	int val;
+	sem_getvalue(&sem, &val);
+	
+	return val;	
+}
+
+
+Semaphore *SemaphorePosix::create_semaphore_posix() {
+
+	return memnew( SemaphorePosix );
+}
+
+void SemaphorePosix::make_default() {
+
+	create_func=create_semaphore_posix;
+}
+
+SemaphorePosix::SemaphorePosix() {
+
+	int r = sem_init(&sem,0,0);
+	if (r != 0)
+		perror("sem creating");
+}
+
+
+SemaphorePosix::~SemaphorePosix() {
+
+	sem_destroy(&sem);
+}
+
+
+#endif