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| author | reimar <reimar@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2010-05-23 21:53:48 +0000 |
|---|---|---|
| committer | reimar <reimar@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2010-05-23 21:53:48 +0000 |
| commit | 2ced41082c0bc3135063c2e0ef5ac8ea2837bbc0 (patch) | |
| tree | 753a1ae359ae147db985d7cdc8d12b1c33281749 /stream | |
| parent | cc7a2d3287d4bf08a3e85a4bddc41cdfaf55ace7 (diff) | |
| download | mpv-2ced41082c0bc3135063c2e0ef5ac8ea2837bbc0.tar.bz2 mpv-2ced41082c0bc3135063c2e0ef5ac8ea2837bbc0.tar.xz | |
Optimize cache behaviour for the many-consecutive-seeks case.
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31199 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'stream')
| -rw-r--r-- | stream/cache2.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/stream/cache2.c b/stream/cache2.c index 98268cf46b..48ebe50123 100644 --- a/stream/cache2.c +++ b/stream/cache2.c @@ -23,6 +23,10 @@ // TODO: seeking, data consistency checking #define READ_USLEEP_TIME 10000 +// These defines are used to reduce the cost of many succesive +// seeks (e.g. when a file has no index) by spinning quickly at first. +#define INITIAL_FILL_USLEEP_TIME 1000 +#define INITIAL_FILL_USLEEP_COUNT 10 #define FILL_USLEEP_TIME 50000 #define PREFILL_SLEEP_TIME 200 #define CONTROL_SLEEP_TIME 0 @@ -432,10 +436,17 @@ static void ThreadProc( void *s ){ // cache thread mainloop: signal(SIGTERM,exit_sighandler); // kill signal(SIGUSR1, dummy_sighandler); // wakeup + { + int sleep_count = 0; do { if(!cache_fill(s)){ + if (sleep_count < INITIAL_FILL_USLEEP_COUNT) { + sleep_count++; + usec_sleep(INITIAL_FILL_USLEEP_TIME); + } else usec_sleep(FILL_USLEEP_TIME); // idle - } + } else + sleep_count = 0; // cache_stats(s->cache_data); } while (cache_execute_control(s)); #if defined(__MINGW32__) || defined(__OS2__) @@ -446,6 +457,7 @@ static void ThreadProc( void *s ){ // make sure forked code never leaves this function exit(0); #endif + } } int cache_stream_fill_buffer(stream_t *s){ |