common: add thread_once() implementation

1 files changed, 9 insertions, 0 deletions

diff --git a/common/thread.h b/common/thread.h
index e74ee74..5d20083 100644
--- a/common/thread.h
+++ b/common/thread.h
@@ -26,10 +26,17 @@
 #include <windows.h>
 typedef HANDLE thread_t;
 typedef CRITICAL_SECTION mutex_t;
+typedef volatile struct {
+        LONG lock;
+        int state;
+} thread_once_t;
+#define THREAD_ONCE_INIT {0, 0}
 #else
 #include <pthread.h>
 typedef pthread_t thread_t;
 typedef pthread_mutex_t mutex_t;
+typedef pthread_once_t thread_once_t;
+#define THREAD_ONCE_INIT PTHREAD_ONCE_INIT
 #endif
 
 typedef void* (*thread_func_t)(void* data);
@@ -42,4 +49,6 @@ void mutex_destroy(mutex_t* mutex);
 void mutex_lock(mutex_t* mutex);
 void mutex_unlock(mutex_t* mutex);
 
+void thread_once(thread_once_t *once_control, void (*init_routine)(void));
+
 #endif