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windows: use number of CPUs as automatic thread count

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This commit is contained in:
Janne Grunau 2011-12-21 01:26:19 +01:00
parent ea4d5f4837
commit ad29ecbff0
2 changed files with 8 additions and 0 deletions
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2
configure vendored
View File

@ -1086,6 +1086,7 @@ HAVE_LIST="
gethrtime
GetProcessMemoryInfo
GetProcessTimes
GetSystemInfo
getrusage
gnu_as
ibm_asm
@ -2859,6 +2860,7 @@ check_func_headers io.h setmode
check_func_headers lzo/lzo1x.h lzo1x_999_compress
check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
check_func_headers windows.h GetProcessTimes
check_func_headers windows.h GetSystemInfo
check_func_headers windows.h MapViewOfFile
check_func_headers windows.h VirtualAlloc

6
libavcodec/pthread.c
View File

@ -34,6 +34,8 @@
#if HAVE_SCHED_GETAFFINITY
#define _GNU_SOURCE
#include <sched.h>
#elif HAVE_GETSYSTEMINFO
#include <windows.h>
#endif
#include "avcodec.h"
@ -156,6 +158,10 @@ static int get_logical_cpus(AVCodecContext *avctx)
if (!ret) {
nb_cpus = CPU_COUNT(&cpuset);
}
#elif HAVE_GETSYSTEMINFO
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
nb_cpus = sysinfo.dwNumberOfProcessors;
#endif
av_log(avctx, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);
return FFMIN(nb_cpus, MAX_AUTO_THREADS);