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/*
* The MIT License (MIT)
*
* Copyright © 2015-2016 Franklin "Snaipe" Mathieu <http://snai.pe/>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "internal.h"
size_t get_processor_count(void)
{
#ifdef _WIN32
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
return (size_t) sysinfo.dwNumberOfProcessors;
#elif defined (BSD)
int mib[2] = { CTL_HW, HW_NCPU };
# ifdef __APPLE__
size_t miblen = 2;
sysctlnametomib("hw.logicalcpu", mib, &miblen);
# endif
long long count = 0;
size_t len = sizeof (count);
int res = sysctl(mib, 2, &count, &len, NULL, 0);
if (count < 1 || res == -1)
count = 1;
return (size_t) count;
#elif defined (__linux__)
return sysconf(_SC_NPROCESSORS_ONLN);
#else
# error System not supported
#endif
}
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