[vlc-commits] aout: relax memory order for restart flags

[Rémi Denis-Courmont]

vlc | branch: master | Rémi Denis-Courmont <remi at remlab.net> | Sat May  5 13:15:32 2018 +0300| [a805a5d98b4a15d844d521527c8b79f39b514e73] | committer: Rémi Denis-Courmont

aout: relax memory order for restart flags

> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=a805a5d98b4a15d844d521527c8b79f39b514e73
---

 src/audio_output/dec.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/audio_output/dec.c b/src/audio_output/dec.c
index 3bf66253f4..4fce75b2b4 100644
--- a/src/audio_output/dec.c
+++ b/src/audio_output/dec.c
@@ -77,7 +77,7 @@ int aout_DecNew( audio_output_t *p_aout,
     /* Create the audio output stream */
     owner->volume = aout_volume_New (p_aout, p_replay_gain);
 
-    atomic_store (&owner->restart, 0);
+    atomic_store_explicit(&owner->restart, 0, memory_order_relaxed);
     owner->input_format = *p_format;
     owner->mixer_format = owner->input_format;
     owner->request_vout = *p_request_vout;
@@ -130,9 +130,10 @@ void aout_DecDelete (audio_output_t *aout)
 static int aout_CheckReady (audio_output_t *aout)
 {
     aout_owner_t *owner = aout_owner (aout);
-
     int status = AOUT_DEC_SUCCESS;
-    int restart = atomic_exchange (&owner->restart, 0);
+
+    int restart = atomic_exchange_explicit(&owner->restart, 0,
+                                           memory_order_acquire);
     if (unlikely(restart))
     {
         if (owner->mixer_format.i_format)
@@ -188,7 +189,7 @@ static int aout_CheckReady (audio_output_t *aout)
 void aout_RequestRestart (audio_output_t *aout, unsigned mode)
 {
     aout_owner_t *owner = aout_owner (aout);
-    atomic_fetch_or (&owner->restart, mode);
+    atomic_fetch_or_explicit(&owner->restart, mode, memory_order_release);
     msg_Dbg (aout, "restart requested (%u)", mode);
 }