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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use prelude::v1::*;
use cell::UnsafeCell;
use libc::{self, DWORD};
use sys::os;
use sys::mutex::{self, Mutex};
use sys::sync as ffi;
use time::Duration;
pub struct Condvar { inner: UnsafeCell<ffi::CONDITION_VARIABLE> }
unsafe impl Send for Condvar {}
unsafe impl Sync for Condvar {}
impl Condvar {
pub const fn new() -> Condvar {
Condvar { inner: UnsafeCell::new(ffi::CONDITION_VARIABLE_INIT) }
}
#[inline]
pub unsafe fn wait(&self, mutex: &Mutex) {
let r = ffi::SleepConditionVariableSRW(self.inner.get(),
mutex::raw(mutex),
libc::INFINITE,
0);
debug_assert!(r != 0);
}
pub unsafe fn wait_timeout(&self, mutex: &Mutex, dur: Duration) -> bool {
let r = ffi::SleepConditionVariableSRW(self.inner.get(),
mutex::raw(mutex),
super::dur2timeout(dur),
0);
if r == 0 {
const ERROR_TIMEOUT: DWORD = 0x5B4;
debug_assert_eq!(os::errno() as usize, ERROR_TIMEOUT as usize);
false
} else {
true
}
}
#[inline]
pub unsafe fn notify_one(&self) {
ffi::WakeConditionVariable(self.inner.get())
}
#[inline]
pub unsafe fn notify_all(&self) {
ffi::WakeAllConditionVariable(self.inner.get())
}
pub unsafe fn destroy(&self) {
// ...
}
}
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