diff options
| -rw-r--r-- | library/std/src/sys/hermit/condvar.rs | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/library/std/src/sys/hermit/condvar.rs b/library/std/src/sys/hermit/condvar.rs index fa8ef8fc37a..b62f21a9dac 100644 --- a/library/std/src/sys/hermit/condvar.rs +++ b/library/std/src/sys/hermit/condvar.rs @@ -55,8 +55,20 @@ impl Condvar { mutex.lock(); } - pub unsafe fn wait_timeout(&self, _mutex: &Mutex, _dur: Duration) -> bool { - panic!("wait_timeout not supported on hermit"); + pub unsafe fn wait_timeout(&self, mutex: &Mutex, dur: Duration) -> bool { + self.counter.fetch_add(1, SeqCst); + mutex.unlock(); + let millis = dur.as_millis().min(u32::MAX as u128) as u32; + + let res = if millis > 0 { + abi::sem_timedwait(self.sem1, millis) + } else { + abi::sem_trywait(self.sem1) + }; + + abi::sem_post(self.sem2); + mutex.lock(); + res == 0 } pub unsafe fn destroy(&self) { |