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bsd: use number of logical CPUs as automatic thread count

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This commit is contained in:
Janne Grunau 2011-12-22 21:10:07 +01:00
parent ad29ecbff0
commit b9e2226972
2 changed files with 12 additions and 0 deletions
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2
configure vendored
View File

@ -1138,6 +1138,7 @@ HAVE_LIST="
symver symver
symver_asm_label symver_asm_label
symver_gnu_asm symver_gnu_asm
sysctl
sys_mman_h sys_mman_h
sys_resource_h sys_resource_h
sys_select_h sys_select_h
@ -2856,6 +2857,7 @@ check_func strerror_r
check_func strptime check_func strptime
check_func strtok_r check_func strtok_r
check_func sched_getaffinity check_func sched_getaffinity
check_func sysctl
check_func_headers io.h setmode check_func_headers io.h setmode
check_func_headers lzo/lzo1x.h lzo1x_999_compress check_func_headers lzo/lzo1x.h lzo1x_999_compress
check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi

10
libavcodec/pthread.c
View File

@ -36,6 +36,9 @@
#include <sched.h> #include <sched.h>
#elif HAVE_GETSYSTEMINFO #elif HAVE_GETSYSTEMINFO
#include <windows.h> #include <windows.h>
#elif HAVE_SYSCTL
#include <sys/sysctl.h>
#include <sys/types.h>
#endif #endif
#include "avcodec.h" #include "avcodec.h"
@ -162,6 +165,13 @@ static int get_logical_cpus(AVCodecContext *avctx)
SYSTEM_INFO sysinfo; SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo); GetSystemInfo(&sysinfo);
nb_cpus = sysinfo.dwNumberOfProcessors; nb_cpus = sysinfo.dwNumberOfProcessors;
#elif HAVE_SYSCTL
int mib[2] = { CTL_HW, HW_NCPU };
size_t len = sizeof(nb_cpus);
ret = sysctl(mib, 2, &nb_cpus, &len, NULL, 0);
if (ret == -1)
nb_cpus = 0;
#endif #endif
av_log(avctx, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus); av_log(avctx, AV_LOG_DEBUG, "detected %d logical cores\n", nb_cpus);
return FFMIN(nb_cpus, MAX_AUTO_THREADS); return FFMIN(nb_cpus, MAX_AUTO_THREADS);