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| author | Max Kellermann <max@duempel.org> | 2013-11-06 23:10:05 +0100 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2013-11-06 23:51:17 +0100 |
| commit | 0be5a6ab2b9201e60f3ecb363fcc9342ecfa8aee (patch) | |
| tree | 0e1a98376069ab299dbd701d7be40f8030da70f8 /src/DecoderControl.cxx | |
| parent | 9802e74859219ae151cddb238f71016e3a2ef1ef (diff) | |
| download | mpd-0be5a6ab2b9201e60f3ecb363fcc9342ecfa8aee.tar.gz mpd-0be5a6ab2b9201e60f3ecb363fcc9342ecfa8aee.tar.xz mpd-0be5a6ab2b9201e60f3ecb363fcc9342ecfa8aee.zip | |
DecoderControl: reduce the number of PlayerThread wakeups
Wake up the PlayerThread only if it is really waiting for the decoder.
This greatly reduces the number of system calls in the DecoderThread.
Diffstat (limited to '')
| -rw-r--r-- | src/DecoderControl.cxx | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/DecoderControl.cxx b/src/DecoderControl.cxx index d76580cbb..ab460ced0 100644 --- a/src/DecoderControl.cxx +++ b/src/DecoderControl.cxx @@ -30,6 +30,7 @@ DecoderControl::DecoderControl(Mutex &_mutex, Cond &_client_cond) :mutex(_mutex), client_cond(_client_cond), state(DecoderState::STOP), command(DecoderCommand::NONE), + client_is_waiting(false), song(nullptr), replay_gain_db(0), replay_gain_prev_db(0) {} @@ -41,6 +42,18 @@ DecoderControl::~DecoderControl() song->Free(); } +void +DecoderControl::WaitForDecoder() +{ + assert(!client_is_waiting); + client_is_waiting = true; + + client_cond.wait(mutex); + + assert(client_is_waiting); + client_is_waiting = false; +} + bool DecoderControl::IsCurrentSong(const Song &_song) const { |