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Code Issues Releases Wiki Activity

Optimize cache behaviour for the many-consecutive-seeks case.

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@31199 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
reimar 2010-05-23 21:53:48 +00:00
parent cc7a2d3287
commit 2ced41082c
1 changed files with 13 additions and 1 deletions
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14
stream/cache2.c
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@ -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){