36 lines
1.1 KiB
V
36 lines
1.1 KiB
V
module runtime
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fn C.sysconf(name i32) i64
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// nr_cpus returns the number of virtual CPU cores found on the system.
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pub fn nr_cpus() int {
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mut cpus := int(C.sysconf(C._SC_NPROCESSORS_ONLN))
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if cpus < 1 {
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eprintln('Warning: sysconf(_SC_NPROCESSORS_ONLN) returned -1, returning CPU count as 1')
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cpus = 1
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}
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return cpus
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}
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// total_memory returns total physical memory found on the system.
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pub fn total_memory() !usize {
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page_size := usize(C.sysconf(C._SC_PAGESIZE))
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c_errno_1 := C.errno
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if page_size == usize(-1) {
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return error('total_memory: `C.sysconf(C._SC_PAGESIZE)` return error code = ${c_errno_1}')
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}
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phys_pages := usize(C.sysconf(C._SC_PHYS_PAGES))
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c_errno_2 := C.errno
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if phys_pages == usize(-1) {
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return error('total_memory: `C.sysconf(C._SC_PHYS_PAGES)` return error code = ${c_errno_2}')
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}
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return page_size * phys_pages
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}
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// free_memory returns free physical memory found on the system.
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// Note: implementation available only on Darwin, FreeBSD, Linux, OpenBSD and
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// Windows. Otherwise, returns 'free_memory: not implemented'.
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pub fn free_memory() !usize {
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return free_memory_impl()!
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}
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