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用SetProcessAffinityMask为进程指定CPU

2007-10-30 19:21 459 查看
TheSetProcessAffinityMaskfunctionsetsaprocessoraffinitymaskforthethreadsofthespecifiedprocess.

BOOLSetProcessAffinityMask(
HANDLEhProcess,
DWORD_PTRdwProcessAffinityMask
);





//getsysteminfo


SYSTEM_INFOSystemInfo;


GetSystemInfo(&SystemInfo);




printf(""


"dwNumberOfProcessors=%u,dwActiveProcessorMask=%u,wProcessorLevel=%u,"


"wProcessorArchitecture=%u,dwPageSize=%u",


SystemInfo.dwNumberOfProcessors,SystemInfo.dwActiveProcessorMask,SystemInfo.wProcessorLevel,


SystemInfo.wProcessorArchitecture,SystemInfo.dwPageSize


);


if(SystemInfo.dwNumberOfProcessors<=1)return;




DWORDdwMask=0x0000;


DWORDdwtmp=0x0001;


intnProcessorNum=0;


for(inti=0;i<32;i++)




...{


if(SystemInfo.dwActiveProcessorMask&dwtmp)




...{


nProcessorNum++;


if(nProcessorNum<=2)




...{


//如果系统中有多个处理器，则选择第二个处理器


dwMask=dwtmp;


}


else




...{


break;


}


}




dwtmp*=2;




}//endoffor




//进程与指定cpu绑定


SetProcessAffinityMask(GetCurrentProcess(),dwMask);


//线程与指定cpu绑定


//SetThreadAffinityMask(GetCurrentThread(),dwMask);




return;
                                            

                                        

                        
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