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use sched_yield on linux and freebsd

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pthread_yield is non-standard, while sched_yield is POSIX

The Linux documentation recommends using the standard function. This is
the only feature we're currently using that's present in glibc but not
in musl.
This commit is contained in:
Daniel Micay 2014-05-14 15:54:19 -04:00 • committed by Alex Crichton
parent 8211539114
commit e043644cea
1 changed files with 0 additions and 10 deletions
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10
src/libstd/rt/thread.rs
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@ -273,13 +273,8 @@ mod imp {
assert_eq!(pthread_detach(native), 0);
}
#[cfg(target_os = "macos")]
#[cfg(target_os = "android")]
pub unsafe fn yield_now() { assert_eq!(sched_yield(), 0); }
#[cfg(not(target_os = "macos"), not(target_os = "android"))]
pub unsafe fn yield_now() { assert_eq!(pthread_yield(), 0); }
// glibc >= 2.15 has a __pthread_get_minstack() function that returns
// PTHREAD_STACK_MIN plus however many bytes are needed for thread-local
// storage. We need that information to avoid blowing up when a small stack
@ -326,12 +321,7 @@ mod imp {
fn pthread_attr_setdetachstate(attr: *mut libc::pthread_attr_t,
state: libc::c_int) -> libc::c_int;
fn pthread_detach(thread: libc::pthread_t) -> libc::c_int;
#[cfg(target_os = "macos")]
#[cfg(target_os = "android")]
fn sched_yield() -> libc::c_int;
#[cfg(not(target_os = "macos"), not(target_os = "android"))]
fn pthread_yield() -> libc::c_int;
}
}