blob: 4f92fe1a585d128a3e010444203e599d7f77156d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
// Copyright (c) 2019-2021 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
// nr_jobs returns the same as `nr_cpus` with the difference that if an
// environment variable `VJOBS` is set, and has a value > 0,
// then `nr_jobs` will return that number instead.
// This is useful for runtime tweaking of e.g. threaded or concurrent code.
pub fn nr_jobs() int {
mut cpus := nr_cpus() - 1
// allow for overrides, for example using `VJOBS=32 ./v test .`
vjobs := os.getenv('VJOBS').int()
if vjobs > 0 {
cpus = vjobs
}
if cpus == 0 {
return 1
}
return cpus
}
// is_32bit returns true if the current executable is running on a 32 bit system.
pub fn is_32bit() bool {
$if x32 {
return true
}
return false
}
// is_64bit returns true if the current executable is running on a 64 bit system.
pub fn is_64bit() bool {
$if x64 {
return true
}
return false
}
// is_little_endian returns true if the current executable is running on a little-endian system.
pub fn is_little_endian() bool {
$if little_endian {
return true
}
return false
}
// is_big_endian returns true if the current executable is running on a big-endian system.
pub fn is_big_endian() bool {
$if big_endian {
return true
}
return false
}
|
