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+/*
+ * -------------------------------------------------------------
+ *
+ * Module: semaphore.h
+ *
+ * Purpose:
+ * Semaphores aren't actually part of the PThreads standard.
+ * They are defined by the POSIX Standard:
+ *
+ * POSIX 1003.1b-1993 (POSIX.1b)
+ *
+ * They are supposed to follow the older UNIX convention for
+ * reporting errors. That is, on failure they are supposed
+ * to return a value of -1 and store the appropriate error
+ * number into 'errno'.
+ * HOWEVER,errno cannot be modified in a multithreaded
+ * program on WIN32; therefore, the value is returned as
+ * the function value.
+ * It is recommended that you compare for zero (0) for success
+ * instead of -1 for failure when checking the status of
+ * these functions.
+ *
+ * -------------------------------------------------------------
+ */
+#if !defined( SEMAPHORE_H )
+#define SEMAPHORE_H
+
+#include <process.h>
+#include <errno.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+typedef HANDLE sem_t;
+
+int sem_init (sem_t * sem, int pshared, unsigned int value);
+
+int sem_destroy (sem_t * sem);
+
+int sem_trywait (sem_t * sem);
+
+int sem_wait (sem_t * sem);
+
+int sem_post (sem_t * sem);
+
+#ifdef __cplusplus
+} /* End of extern "C" */
+#endif /* __cplusplus */
+
+#endif /* !SEMAPHORE_H */