v/vlib/runtime/runtime.v

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602 B
V

// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module runtime
import os
//$if linux {
fn C.sysconf(name int) i64
//}
//$if windows {
fn C.GetCurrentProcessorNumber() u32
//}
pub fn nr_cpus() int {
$if linux {
return int(C.sysconf(C._SC_NPROCESSORS_ONLN))
}
$if mac {
return int(C.sysconf(C._SC_NPROCESSORS_ONLN))
}
$if windows {
mut nr := int(C.GetCurrentProcessorNumber())
if nr == 0 {
nr = os.getenv('NUMBER_OF_PROCESSORS').int()
}
return nr
}
return 1
}