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nproc: fix compilation on windows

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This commit is contained in:
Hiroki Noda
2017-05-29 10:06:45 +09:00
parent adb39d411b
commit 57dd3703d0
1 changed files with 7 additions and 3 deletions
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src/nproc/nproc.rs
+7 -3
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@@ -22,9 +22,13 @@ use std::io::Write;
use std::env;
#[cfg(target_os = "linux")]
pub const _SC_NPROCESSORS_CONF: libc::c_int = 83; // libc crate hasn't!!
#[cfg(not(target_os = "linux"))]
pub const _SC_NPROCESSORS_CONF: libc::c_int = 83;
#[cfg(target_os = "macos")]
pub const _SC_NPROCESSORS_CONF: libc::c_int = libc::_SC_NPROCESSORS_CONF;
#[cfg(target_os = "freebsd")]
pub const _SC_NPROCESSORS_CONF: libc::c_int = 57;
#[cfg(target_os = "netbsd")]
pub const _SC_NPROCESSORS_CONF: libc::c_int = 1001;
static NAME: &'static str = "nproc";
@@ -85,7 +89,7 @@ Print the number of cores available to the current process.", NAME, VERSION);
}
let mut cores = if matches.opt_present("all") {
if cfg!(unix) {
if cfg!(target_os = "linux") || cfg!(target_os = "macos") || cfg!(target_os = "freebsd") || cfg!(target_os = "netbsd") {
let nprocs = unsafe { libc::sysconf(_SC_NPROCESSORS_CONF) };
if nprocs == 1 {
// In some situation, /proc and /sys are not mounted, and sysconf returns 1.