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Add #[cfg] in cfg_if for linux in unix/futex.

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This commit is contained in:
Mara Bos 2022-05-03 12:32:41 +02:00
parent 7b7d1d6c48
commit 8ee9b93c4f
1 changed files with 5 additions and 3 deletions
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8
library/std/src/sys/unix/futex.rs
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@ -33,8 +33,6 @@ pub fn futex_wait(futex: &AtomicU32, expected: u32, timeout: Option<Duration>) -
return true;
}
// Use FUTEX_WAIT_BITSET rather than FUTEX_WAIT to be able to give an
// absolute time rather than a relative time.
let r = unsafe {
cfg_if::cfg_if! {
if #[cfg(target_os = "freebsd")] {
@ -56,7 +54,9 @@ pub fn futex_wait(futex: &AtomicU32, expected: u32, timeout: Option<Duration>) -
crate::ptr::invalid_mut(umtx_timeout_size),
umtx_timeout_ptr as *mut _,
)
} else {
} else if #[cfg(any(target_os = "linux", target_os = "android"))] {
// Use FUTEX_WAIT_BITSET rather than FUTEX_WAIT to be able to give an
// absolute time rather than a relative time.
libc::syscall(
libc::SYS_futex,
futex as *const AtomicU32,
@ -66,6 +66,8 @@ pub fn futex_wait(futex: &AtomicU32, expected: u32, timeout: Option<Duration>) -
null::<u32>(), // This argument is unused for FUTEX_WAIT_BITSET.
!0u32, // A full bitmask, to make it behave like a regular FUTEX_WAIT.
)
} else {
compile_error!("unknown target_os");
}
}
};