--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Isolated/UNUSED/SimpleSemaphorePosix.c	Thu Apr 28 16:22:30 2011 -0700
@@ -0,0 +1,122 @@
+#include "SimpleSemaphore.h"
+#include <semaphore.h>
+#include <stdlib.h>
+
+#if defined(DEBUG)
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#define SEMDBG(x) printf x
+#else
+#define SEMDBG(x)
+#endif
+
+
+
+struct SimpleSemaphore
+{
+    sem_t theSemaphore;
+};
+
+SimpleSemaphore* SimpleSemaphore_CreateSemaphore(int initial_value)
+{
+	int ret_val;	
+    SimpleSemaphore* simple_semaphore = (SimpleSemaphore*)malloc(sizeof(SimpleSemaphore));
+	if(NULL == simple_semaphore)
+	{
+		SEMDBG(("Out of memory.\n"));						
+		return NULL;
+	}
+	/* Drat: sem_init isn't available on OS X */
+#ifdef __APPLE__
+	#warning "sem_init (unnamed semaphores) do not work on OS X. This code is broken."
+#endif
+	ret_val = sem_init(&simple_semaphore->theSemaphore, 0, initial_value);
+	if(0 != ret_val)
+	{
+		/* failed */
+		SEMDBG(("sem_init failed with: %d\n", ret_val));		
+		free(simple_semaphore);
+		return 0;
+	}
+
+    return simple_semaphore;
+}
+
+void SimpleSemaphore_DestroySemaphore(SimpleSemaphore* simple_semaphore)
+{
+	if(NULL == simple_semaphore)
+	{
+		return;
+	}
+	sem_destroy(&simple_semaphore->theSemaphore);
+	free(simple_semaphore);
+}
+
+int SimpleSemaphore_SemaphoreTryWait(SimpleSemaphore* simple_semaphore)
+{
+    int ret_val;
+	if(NULL == simple_semaphore)
+	{
+		SEMDBG(("SimpleSemaphore_SemTryWait was passed a NULL semaphore\n"));	
+		return 0;
+	}
+    ret_val = sem_trywait(&simple_semaphore->theSemaphore);
+	if(0 == ret_val)
+	{
+		return 1;
+    }
+	else
+	{
+		return 0;
+	}
+}
+
+int SimpleSemaphore_SemaphoreWait(SimpleSemaphore* simple_semaphore)
+{
+    int ret_val;
+	if(NULL == simple_semaphore)
+	{
+		SEMDBG(("SimpleSemaphore_SemaphoreWait was passed a NULL semaphore\n"));	
+		return 0;
+	}
+    ret_val = sem_wait(&simple_semaphore->theSemaphore);
+	if(0 == ret_val)
+	{
+		return 1;
+    }
+	else
+	{
+		return 0;
+	}
+}
+
+int SimpleSemaphore_SemaphoreGetValue(SimpleSemaphore* simple_semaphore)
+{
+    int ret_val = 0;
+	if(NULL == simple_semaphore)
+	{
+		SEMDBG(("SimpleSemaphore_SemaphoreGetValue was passed a NULL semaphore\n"));	
+		return 0;
+	}
+	sem_getvalue(&simple_semaphore->theSemaphore, &ret_val);
+	return ret_val;
+}
+
+int SimpleSemaphore_SemaphorePost(SimpleSemaphore* simple_semaphore)
+{
+    int ret_val;
+	if(NULL == simple_semaphore)
+	{
+		SEMDBG(("SimpleSemaphore_SemaphorePost was passed a NULL semaphore\n"));	
+		return 0;
+	}
+
+    ret_val = sem_post(&simple_semaphore->theSemaphore);
+ 	if(-1 == ret_val)
+	{
+		SEMDBG(("sem_post failed with: %s\n", strerror(errno)));		
+	}
+    return ret_val;
+}
+