diff mbox

[FFmpeg-devel,v2,3/4] avfilter/allfilters: make avfilter_register_all thread safe

Message ID 20170307090201.11017-3-mfcc64@gmail.com
State Accepted
Commit af7010ad0557fe66d35886581eecebf02e92637c
Headers show

Commit Message

Muhammad Faiz March 7, 2017, 9:02 a.m. UTC 
use ff_thread_once

Suggested-by: wm4 <nfxjfg@googlemail.com>
Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
---
 libavfilter/allfilters.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)
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Patch

diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 15a74c4..df1af8d 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -19,6 +19,7 @@ 
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/thread.h"
 #include "avfilter.h"
 #include "config.h"
 #include "opencl_allkernels.h"
@@ -37,14 +38,8 @@ 
         avfilter_register(&ff_##x);                                     \
     }
 
-void avfilter_register_all(void)
+static void register_all(void)
 {
-    static int initialized;
-
-    if (initialized)
-        return;
-    initialized = 1;
-
     REGISTER_FILTER(ABENCH,         abench,         af);
     REGISTER_FILTER(ACOMPRESSOR,    acompressor,    af);
     REGISTER_FILTER(ACROSSFADE,     acrossfade,     af);
@@ -380,3 +375,10 @@  void avfilter_register_all(void)
     REGISTER_FILTER_UNCONDITIONAL(vf_fifo);
     ff_opencl_register_filter_kernel_code_all();
 }
+
+void avfilter_register_all(void)
+{
+    AVOnce control = AV_ONCE_INIT;
+
+    ff_thread_once(&control, register_all);
+}