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-rw-r--r--common/thread.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/common/thread.c b/common/thread.c
index 2cf4321..d6d6c1a 100644
--- a/common/thread.c
+++ b/common/thread.c
@@ -81,3 +81,19 @@ void mutex_unlock(mutex_t* mutex)
pthread_mutex_unlock(mutex);
#endif
}
+
+void thread_once(thread_once_t *once_control, void (*init_routine)(void))
+{
+#ifdef WIN32
+ while (InterlockedExchange(&(once_control->lock), 1) != 0) {
+ Sleep(1);
+ }
+ if (!once_control->state) {
+ once_control->state = 1;
+ init_routine();
+ }
+ InterlockedExchange(&(once_control->lock), 0);
+#else
+ pthread_once(once_control, init_routine);
+#endif
+}