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win32: detect number of CPUs using affinity 

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
Daniel Verkamp 2012-01-01 23:54:40 +00:00 committed by Janne Grunau
parent b73ec05473
commit 02e8f4272c
2 changed files with 8 additions and 7 deletions
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4
configure vendored
View File

@ -1084,9 +1084,9 @@ HAVE_LIST="
fork
getaddrinfo
gethrtime
GetProcessAffinityMask
GetProcessMemoryInfo
GetProcessTimes
GetSystemInfo
getrusage
gnu_as
ibm_asm
@ -2864,8 +2864,8 @@ check_func sysctl
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 GetProcessAffinityMask
check_func_headers windows.h GetProcessTimes
check_func_headers windows.h GetSystemInfo
check_func_headers windows.h MapViewOfFile
check_func_headers windows.h VirtualAlloc

11
libavcodec/pthread.c
View File

@ -35,7 +35,7 @@
#define _GNU_SOURCE
#include <sched.h>
#endif
#if HAVE_GETSYSTEMINFO
#if HAVE_GETPROCESSAFFINITYMASK
#include <windows.h>
#endif
#if HAVE_SYSCTL
@ -169,10 +169,11 @@ 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;
#elif HAVE_GETPROCESSAFFINITYMASK
DWORD_PTR proc_aff, sys_aff;
ret = GetProcessAffinityMask(GetCurrentProcess(), &proc_aff, &sys_aff);
if (ret)
nb_cpus = av_popcount64(proc_aff);
#elif HAVE_SYSCTL && defined(HW_NCPU)
int mib[2] = { CTL_HW, HW_NCPU };
size_t len = sizeof(nb_cpus);