Busy wait loops are a bad thing, especially when the response time can
be very long - busy waits eat a lot of CPU, and thus slow down the
other thread. Since the other thread will notify us when it's ready,
we can use notify_wait() instead.
---
src/decode.c | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/src/decode.c b/src/decode.c
index 02f8064..551f40c 100644
--- a/src/decode.c
+++ b/src/decode.c
@@ -58,8 +58,10 @@ static void player_wakeup_decoder(void)
static void dc_command_wait(void)
{
- while (dc.command != DECODE_COMMAND_NONE)
+ while (dc.command != DECODE_COMMAND_NONE) {
player_wakeup_decoder_nb();
+ notify_wait(&pc.notify);
+ }
}
static void dc_command(enum decoder_command cmd)
@@ -112,8 +114,10 @@ static unsigned calculateCrossFadeChunks(AudioFormat * af,
float totalTime)
static int waitOnDecode(int *decodeWaitedOn)
{
- while (dc.command == DECODE_COMMAND_START)
- player_wakeup_decoder();
+ while (dc.command == DECODE_COMMAND_START) {
+ notify_signal(&dc.notify);
+ notify_wait(&pc.notify);
+ }
if (dc.error != DECODE_ERROR_NOERROR) {
pc.errored_song = dc.next_song;
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