blob: b8fe1d3f663a0ff4d3d2dc0816248b0107a7cae8 (
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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <unistd.h>
#include "threading/CpuCount.h"
uint32_t js::GetCPUCount() {
static uint32_t ncpus = 0;
// _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN are common, but not
// standard.
if (ncpus == 0) {
#if defined(_SC_NPROCESSORS_CONF)
long n = sysconf(_SC_NPROCESSORS_CONF);
ncpus = (n > 0) ? uint32_t(n) : 1;
#elif defined(_SC_NPROCESSORS_ONLN)
long n = sysconf(_SC_NPROCESSORS_ONLN);
ncpus = (n > 0) ? uint32_t(n) : 1;
#else
ncpus = 1;
#endif
}
return ncpus;
}
|
