X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Flzms-compress.c;h=2c9356d9b1a538006a7fc9dcae90404bc2c271a2;hp=763be005b071625f16f086ac48747707996fbe8c;hb=ee4fcdd5c4924803ae67a09fecac7d6b4b8ead6e;hpb=b9320c921af8d8d2ea3ea80c576ca1e4037af049

diff --git a/src/lzms-compress.c b/src/lzms-compress.c
index 763be005..2c9356d9 100644
--- a/src/lzms-compress.c
+++ b/src/lzms-compress.c
@@ -666,17 +666,9 @@ lzms_do_init_rc_costs(void)
 static void
 lzms_init_rc_costs(void)
 {
-	static bool done = false;
-	static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
-
-	if (unlikely(!done)) {
-		pthread_mutex_lock(&mutex);
-		if (!done) {
-			lzms_do_init_rc_costs();
-			done = true;
-		}
-		pthread_mutex_unlock(&mutex);
-	}
+	static pthread_once_t once = PTHREAD_ONCE_INIT;
+
+	pthread_once(&once, lzms_do_init_rc_costs);
 }
 
 /*