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34 lines
636 B
C
34 lines
636 B
C
// https://www.cprogramming.com/snippets/source-code/find-the-number-of-cpu-cores-for-windows-mac-or-linux
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module std::os @if(env::DARWIN);
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import std::os::macos;
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fn uint num_cpu()
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{
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int[2] nm;
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usz len = 4;
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uint count;
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nm = { darwin::CTL_HW, darwin::HW_NCPU };
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darwin::sysctl(&nm, 2, &count, &len, null, 0);
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if (count < 1) count = 1;
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return count;
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}
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module std::os @if(env::LINUX);
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import std::os::posix;
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fn uint num_cpu()
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{
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return posix::get_nprocs_conf();
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}
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module std::os @if(env::WIN32);
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import std::os::win32;
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fn uint num_cpu()
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{
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SystemInfo info;
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win32::get_system_info(&info);
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return info.dwNumberOfProcessors;
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} |