[FFmpeg-devel] [PATCH] lavc/pthread_frame: set worker thread names

[Anton Khirnov <anton@khirnov.net>]

---
Yes, the space is limited and we could bikeshed until christmas about
the best way to use it.

Here's an attempt with an 'av' prefix, 'ft' (frame thread) changed to
df (decoder - frame thread), and only two characters guranteed for
thread index.
---
 libavcodec/pthread_frame.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/libavcodec/pthread_frame.c b/libavcodec/pthread_frame.c
index f8fddc5e4d..df82a4125f 100644
--- a/libavcodec/pthread_frame.c
+++ b/libavcodec/pthread_frame.c
@@ -179,6 +179,17 @@ static void async_unlock(FrameThreadContext *fctx)
     pthread_mutex_unlock(&fctx->async_mutex);
 }
 
+static void thread_set_name(PerThreadContext *p)
+{
+    AVCodecContext *avctx = p->avctx;
+    int idx = p - p->parent->threads;
+    char name[16];
+
+    snprintf(name, sizeof(name), "av:%.7s:df%d", avctx->codec->name, idx);
+
+    ff_thread_setname(name);
+}
+
 /**
  * Codec worker thread.
  *
@@ -192,6 +203,8 @@ static attribute_align_arg void *frame_worker_thread(void *arg)
     AVCodecContext *avctx = p->avctx;
     const FFCodec *codec = ffcodec(avctx->codec);
 
+    thread_set_name(p);
+
     pthread_mutex_lock(&p->mutex);
     while (1) {
         while (atomic_load(&p->state) == STATE_INPUT_READY && !p->die)
-- 
2.35.1

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