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| author | Mara Bos <m-ou.se@m-ou.se> | 2022-04-01 11:10:58 +0200 |
|---|---|---|
| committer | Mara Bos <m-ou.se@m-ou.se> | 2022-04-01 11:10:58 +0200 |
| commit | c49887da277334226d17f7633392425e808b46d7 (patch) | |
| tree | 94b25df6d009b5b76e0469284c1b41374afa0ceb /library/std/src/sys/unix/futex.rs | |
| parent | c9ae3fe68fc4477350476acb649b817a80bfd973 (diff) | |
| download | rust-c49887da277334226d17f7633392425e808b46d7.tar.gz rust-c49887da277334226d17f7633392425e808b46d7.zip | |
Add comment about futex_wait timeout.
Diffstat (limited to 'library/std/src/sys/unix/futex.rs')
| -rw-r--r-- | library/std/src/sys/unix/futex.rs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/library/std/src/sys/unix/futex.rs b/library/std/src/sys/unix/futex.rs index b82a4a73440..c61d948fb60 100644 --- a/library/std/src/sys/unix/futex.rs +++ b/library/std/src/sys/unix/futex.rs @@ -14,6 +14,8 @@ pub fn futex_wait(futex: &AtomicI32, expected: i32, timeout: Option<Duration>) - use crate::sync::atomic::Ordering::Relaxed; // Calculate the timeout as an absolute timespec. + // + // Overflows are rounded up to an infinite timeout (None). let timespec = timeout.and_then(|d| Some(Timespec::now(libc::CLOCK_MONOTONIC).checked_add_duration(&d)?)); |