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threads: limit the number of automatic threads to MAX_AUTO_THREADS

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The extra thread added in {frame_}*thread_init was not taken into
account. Explicitly sets thread_count to 1 if only one CPU core was
detected. Also fixes two typos in comments.
This commit is contained in:
Janne Grunau 2012-01-01 17:35:16 +01:00
parent da7c65f0ce
commit b12d217339
1 changed files with 9 additions and 5 deletions
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14
libavcodec/pthread.c
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@ -186,7 +186,7 @@ static int get_logical_cpus(AVCodecContext *avctx)
nb_cpus = sysconf(_SC_NPROCESSORS_ONLN);
#endif
av_log(avctx, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);
return FFMIN(nb_cpus, MAX_AUTO_THREADS);
return nb_cpus;
}
@ -296,9 +296,11 @@ static int thread_init(AVCodecContext *avctx)
if (!thread_count) {
int nb_cpus = get_logical_cpus(avctx);
// use number of cores + 1 as thread count if there is motre than one
// use number of cores + 1 as thread count if there is more than one
if (nb_cpus > 1)
thread_count = avctx->thread_count = nb_cpus + 1;
thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS);
else
thread_count = avctx->thread_count = 1;
}
if (thread_count <= 1) {
@ -767,9 +769,11 @@ static int frame_thread_init(AVCodecContext *avctx)
if (!thread_count) {
int nb_cpus = get_logical_cpus(avctx);
// use number of cores + 1 as thread count if there is motre than one
// use number of cores + 1 as thread count if there is more than one
if (nb_cpus > 1)
thread_count = avctx->thread_count = nb_cpus + 1;
thread_count = avctx->thread_count = FFMIN(nb_cpus + 1, MAX_AUTO_THREADS);
else
thread_count = avctx->thread_count = 1;
}
if (thread_count <= 1) {