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b73a44ec7d
* Add OpenBSD `native_cpus` * update release notes --------- Co-authored-by: Christoffer Lerno <christoffer@aegik.com>
85 lines
2.6 KiB
Plaintext
85 lines
2.6 KiB
Plaintext
// https://www.cprogramming.com/snippets/source-code/find-the-number-of-cpu-cores-for-windows-mac-or-linux
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module std::thread::cpu @if(env::DARWIN);
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import libc;
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const CTL_UNSPEC = 0; /* unused */
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const CTL_KERN = 1; /* "high kernel": proc, limits */
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const CTL_VM = 2; /* virtual memory */
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const CTL_VFS = 3; /* file system, mount type is next */
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const CTL_NET = 4; /* network, see socket.h */
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const CTL_DEBUG = 5; /* debugging parameters */
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const CTL_HW = 6; /* generic cpu/io */
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const CTL_MACHDEP = 7; /* machine dependent */
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const CTL_USER = 8; /* user-level */
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const CTL_MAXID = 9; /* number of valid top-level ids */
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const HW_MACHINE = 1; /* string: machine class */
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const HW_MODEL = 2; /* string: specific machine model */
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const HW_NCPU = 3; /* int: number of cpus */
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const HW_BYTEORDER = 4; /* int: machine byte order */
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const HW_PHYSMEM = 5; /* int: total memory */
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const HW_USERMEM = 6; /* int: non-kernel memory */
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const HW_PAGESIZE = 7; /* int: software page size */
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const HW_DISKNAMES = 8; /* strings: disk drive names */
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const HW_DISKSTATS = 9; /* struct: diskstats[] */
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const HW_EPOCH = 10; /* int: 0 for Legacy, else NewWorld */
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const HW_FLOATINGPT = 11; /* int: has HW floating point? */
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const HW_MACHINE_ARCH = 12; /* string: machine architecture */
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const HW_VECTORUNIT = 13; /* int: has HW vector unit? */
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const HW_BUS_FREQ = 14; /* int: Bus Frequency */
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const HW_CPU_FREQ = 15; /* int: CPU Frequency */
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const HW_CACHELINE = 16; /* int: Cache Line Size in Bytes */
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const HW_L1ICACHESIZE = 17; /* int: L1 I Cache Size in Bytes */
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const HW_L1DCACHESIZE = 18; /* int: L1 D Cache Size in Bytes */
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const HW_L2SETTINGS = 19; /* int: L2 Cache Settings */
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const HW_L2CACHESIZE = 20; /* int: L2 Cache Size in Bytes */
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const HW_L3SETTINGS = 21; /* int: L3 Cache Settings */
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const HW_L3CACHESIZE = 22; /* int: L3 Cache Size in Bytes */
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const HW_MAXID = 23; /* number of valid hw ids */
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fn uint native_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 = { CTL_HW, HW_NCPU };
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libc::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::thread::cpu @if(env::OPENBSD);
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import std::os::openbsd;
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import libc;
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fn uint native_cpu()
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{
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uint ncpu;
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usz len = uint.sizeof;
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int[2] mib = { openbsd::CTL_HW, openbsd::HW_NCPU };
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libc::sysctl(&mib, 2, &ncpu, &len, null, 0);
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return max(1, ncpu);
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}
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module std::thread::cpu @if(env::LINUX);
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import libc;
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fn uint native_cpu()
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{
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return libc::get_nprocs_conf();
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}
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module std::thread::cpu @if(env::WIN32);
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import libc;
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fn uint native_cpu()
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{
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SystemInfo info;
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libc::get_system_info(&info);
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return info.dwNumberOfProcessors;
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}
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