[FFmpeg-cvslog] pthread: next try on freeing threads without crashing.

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Nov 27 05:55:20 2011 +0100| [2bb79b23fe106a45eab6ff80d7ef7519d542d1f7] | committer: Michael Niedermayer

pthread: next try on freeing threads without crashing.
This should fix mingw

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2bb79b23fe106a45eab6ff80d7ef7519d542d1f7
---

 libavcodec/pthread.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
index 75168e4..ad1fe12 100644
--- a/libavcodec/pthread.c
+++ b/libavcodec/pthread.c
@@ -72,6 +72,7 @@ typedef struct PerThreadContext {
     struct FrameThreadContext *parent;
 
     pthread_t      thread;
+    int thread_created;
     pthread_cond_t input_cond;      ///< Used to wait for a new packet from the main thread.
     pthread_cond_t progress_cond;   ///< Used by child threads to wait for progress to change.
     pthread_cond_t output_cond;     ///< Used by the main thread to wait for frames to finish.
@@ -658,8 +659,9 @@ static void frame_thread_free(AVCodecContext *avctx, int thread_count)
         pthread_cond_signal(&p->input_cond);
         pthread_mutex_unlock(&p->mutex);
 
-        if (p->thread)
+        if (p->thread_created)
             pthread_join(p->thread, NULL);
+        p->thread_created=0;
 
         if (codec->close)
             codec->close(p->avctx);
@@ -763,7 +765,7 @@ static int frame_thread_init(AVCodecContext *avctx)
 
         if (err) goto error;
 
-        pthread_create(&p->thread, NULL, frame_worker_thread, p);
+        p->thread_created= !pthread_create(&p->thread, NULL, frame_worker_thread, p);
     }
 
     return 0;