62 lines
1.9 KiB
Rust
62 lines
1.9 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use cell::UnsafeCell;
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use libc::{mod, DWORD};
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use os;
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use sys::mutex::{mod, Mutex};
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use sys::sync as ffi;
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use time::Duration;
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pub struct Condvar { inner: UnsafeCell<ffi::CONDITION_VARIABLE> }
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pub const CONDVAR_INIT: Condvar = Condvar {
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inner: UnsafeCell { value: ffi::CONDITION_VARIABLE_INIT }
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};
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impl Condvar {
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#[inline]
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pub unsafe fn new() -> Condvar { CONDVAR_INIT }
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#[inline]
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pub unsafe fn wait(&self, mutex: &Mutex) {
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let r = ffi::SleepConditionVariableCS(self.inner.get(),
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mutex::raw(mutex),
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libc::INFINITE);
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debug_assert!(r != 0);
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}
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pub unsafe fn wait_timeout(&self, mutex: &Mutex, dur: Duration) -> bool {
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let r = ffi::SleepConditionVariableCS(self.inner.get(),
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mutex::raw(mutex),
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dur.num_milliseconds() as DWORD);
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if r == 0 {
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const ERROR_TIMEOUT: DWORD = 0x5B4;
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debug_assert_eq!(os::errno() as uint, ERROR_TIMEOUT as uint);
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false
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} else {
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true
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}
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}
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#[inline]
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pub unsafe fn notify_one(&self) {
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ffi::WakeConditionVariable(self.inner.get())
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}
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#[inline]
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pub unsafe fn notify_all(&self) {
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ffi::WakeAllConditionVariable(self.inner.get())
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}
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pub unsafe fn destroy(&self) {
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// ...
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}
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}
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