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70 lines
1.1 KiB
C++
70 lines
1.1 KiB
C++
#include "cpucount.h"
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#ifdef _WIN32
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#include <windows.h>
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int cpucount() throw()
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{
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SYSTEM_INFO sysinfo = {0};
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::GetSystemInfo(&sysinfo);
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return sysinfo.dwNumberOfProcessors;
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}
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#endif
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#ifdef __APPLE_CC__
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#import <sys/param.h>
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#import <sys/sysctl.h>
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int cpucount() throw()
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{
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int count = 0;
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size_t size = sizeof(count);
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if (sysctlbyname("hw.ncpu",&count,&size,NULL,0)) return 1;
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return count;
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}
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#endif
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#if (defined PLATFORM_LINUX || defined PLATFORM_ARMv6 || defined PLATFORM_ARMv7)
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#include <unistd.h>
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int cpucount() throw()
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{
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return sysconf(_SC_NPROCESSORS_ONLN);
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}
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#endif
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#ifdef PLATFORM_BSD
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#ifndef HW_AVAILCPU
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#define HW_AVAILCPU 25
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#endif
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int cpucount() throw()
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{
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int numCPU = 1;
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int mib[4] = {0};
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size_t len = 0;
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/* set the mib for hw.ncpu */
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mib[0] = CTL_HW;
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mib[1] = HW_AVAILCPU; // alternatively, try HW_NCPU;
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/* get the number of CPUs from the system */
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sysctl(mib, 2, &numCPU, &len, NULL, 0);
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if( numCPU < 1 )
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{
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mib[1] = HW_NCPU;
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sysctl( mib, 2, &numCPU, &len, NULL, 0 );
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if( numCPU < 1 )
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{
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numCPU = 1;
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}
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}
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return numCPU;
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}
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#endif
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