first commit

tinycsem.c

@@ -0,0 +1,45 @@
+#include "tinycsem.h"
+
+bool tinycsem_init(struct tinycsem *sem, int count, int max)
+{
+    #ifdef _WIN32
+    SECURITY_ATTRIBUTES *attr = NULL; // Default
+    const char          *name = NULL; // No name
+    HANDLE handle = CreateSemaphore(attr, count, max, name);
+    if (handle == NULL)
+        return false;
+    sem->data = handle;
+    return true;
+    #else
+    (void) max; // POSIX doesn't use this
+    return sem_init(&sem->data, 0, count) == 0;
+    #endif
+}
+
+bool tinycsem_free(struct tinycsem *sem)
+{
+    #ifdef _WIN32
+    CloseHandle(sem->data);
+    return true;
+    #else
+    return sem_destroy(&sem->data) == 0;
+    #endif
+}
+
+bool tinycsem_wait(struct tinycsem *sem)
+{
+    #ifdef _WIN32
+    return WaitForSingleObject(sem->data, INFINITE) == WAIT_OBJECT_0;
+    #else
+    return sem_wait(&sem->data) == 0;
+    #endif
+}
+
+bool tinycsem_signal(struct tinycsem *sem)
+{
+    #ifdef _WIN32
+    return ReleaseSemaphore(sem->data, 1, NULL);
+    #else
+    return sem_post(&sem->data) == 0;
+    #endif
+}