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| author | Max Kellermann <max@duempel.org> | 2008-11-11 20:46:55 +0100 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2008-11-11 20:46:55 +0100 |
| commit | 1bfa6a94e2259201068d7a947507eb5e6e93c0c3 (patch) | |
| tree | 0acf5a246f1889d1643a885dbb11395efe56d9b0 | |
| parent | acf0d141be9bae98311be9479fc46e77f6f87961 (diff) | |
| download | mpd-1bfa6a94e2259201068d7a947507eb5e6e93c0c3.tar.gz mpd-1bfa6a94e2259201068d7a947507eb5e6e93c0c3.tar.xz mpd-1bfa6a94e2259201068d7a947507eb5e6e93c0c3.zip | |
player: fix race condition during tag update
When a tag is updated, the old tag was freed before the new one was
created. Reverse the order to be sure that other threads always see a
valid pointer.
This still leaves a possible race condition, but it will be addressed
later.
| -rw-r--r-- | src/player_thread.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/player_thread.c b/src/player_thread.c index 30f876fe0..ddd87cc06 100644 --- a/src/player_thread.c +++ b/src/player_thread.c @@ -225,11 +225,13 @@ play_chunk(struct song *song, struct music_chunk *chunk, if (!song_is_file(song)) { /* always update the tag of remote streams */ + struct tag *old_tag = song->tag; - if (song->tag != NULL) - tag_free(song->tag); song->tag = tag_dup(chunk->tag); + if (old_tag != NULL) + tag_free(old_tag); + /* notify all clients that the tag of the current song has changed */ idle_add(IDLE_PLAYER); |