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// Copyright 2013 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 libc::{c_void, c_int};
use option::Some;
use rt::uv::uvll;
use rt::uv::{Watcher, Loop, NativeHandle, TimerCallback, NullCallback};
use rt::uv::status_to_maybe_uv_error;
pub struct TimerWatcher(*uvll::uv_timer_t);
impl Watcher for TimerWatcher { }
impl TimerWatcher {
pub fn new(loop_: &mut Loop) -> TimerWatcher {
unsafe {
let handle = uvll::malloc_handle(uvll::UV_TIMER);
assert!(handle.is_not_null());
assert!(0 == uvll::timer_init(loop_.native_handle(), handle));
let mut watcher: TimerWatcher = NativeHandle::from_native_handle(handle);
watcher.install_watcher_data();
return watcher;
}
}
pub fn start(&mut self, timeout: u64, repeat: u64, cb: TimerCallback) {
{
let data = self.get_watcher_data();
data.timer_cb = Some(cb);
}
unsafe {
uvll::timer_start(self.native_handle(), timer_cb, timeout, repeat);
}
extern fn timer_cb(handle: *uvll::uv_timer_t, status: c_int) {
let mut watcher: TimerWatcher = NativeHandle::from_native_handle(handle);
let data = watcher.get_watcher_data();
let cb = data.timer_cb.get_ref();
let status = status_to_maybe_uv_error(watcher, status);
(*cb)(watcher, status);
}
}
pub fn stop(&mut self) {
unsafe {
uvll::timer_stop(self.native_handle());
}
}
pub fn close(self, cb: NullCallback) {
let mut watcher = self;
{
let data = watcher.get_watcher_data();
assert!(data.close_cb.is_none());
data.close_cb = Some(cb);
}
unsafe {
uvll::close(watcher.native_handle(), close_cb);
}
extern fn close_cb(handle: *uvll::uv_timer_t) {
let mut watcher: TimerWatcher = NativeHandle::from_native_handle(handle);
{
let data = watcher.get_watcher_data();
data.close_cb.take_unwrap()();
}
watcher.drop_watcher_data();
unsafe {
uvll::free_handle(handle as *c_void);
}
}
}
}
impl NativeHandle<*uvll::uv_timer_t> for TimerWatcher {
fn from_native_handle(handle: *uvll::uv_timer_t) -> TimerWatcher {
TimerWatcher(handle)
}
fn native_handle(&self) -> *uvll::uv_idle_t {
match self { &TimerWatcher(ptr) => ptr }
}
}
#[cfg(test)]
mod test {
use super::*;
use rt::uv::Loop;
use unstable::run_in_bare_thread;
#[test]
fn smoke_test() {
do run_in_bare_thread {
let mut count = 0;
let count_ptr: *mut int = &mut count;
let mut loop_ = Loop::new();
let mut timer = TimerWatcher::new(&mut loop_);
do timer.start(10, 0) |timer, status| {
assert!(status.is_none());
unsafe { *count_ptr += 1 };
timer.close(||());
}
loop_.run();
loop_.close();
assert!(count == 1);
}
}
#[test]
fn start_twice() {
do run_in_bare_thread {
let mut count = 0;
let count_ptr: *mut int = &mut count;
let mut loop_ = Loop::new();
let mut timer = TimerWatcher::new(&mut loop_);
do timer.start(10, 0) |timer, status| {
let mut timer = timer;
assert!(status.is_none());
unsafe { *count_ptr += 1 };
do timer.start(10, 0) |timer, status| {
assert!(status.is_none());
unsafe { *count_ptr += 1 };
timer.close(||());
}
}
loop_.run();
loop_.close();
assert!(count == 2);
}
}
#[test]
fn repeat_stop() {
do run_in_bare_thread {
let mut count = 0;
let count_ptr: *mut int = &mut count;
let mut loop_ = Loop::new();
let mut timer = TimerWatcher::new(&mut loop_);
do timer.start(1, 2) |timer, status| {
assert!(status.is_none());
unsafe {
*count_ptr += 1;
if *count_ptr == 10 {
// Stop the timer and do something else
let mut timer = timer;
timer.stop();
// Freeze timer so it can be captured
let timer = timer;
let mut loop_ = timer.event_loop();
let mut timer2 = TimerWatcher::new(&mut loop_);
do timer2.start(10, 0) |timer2, _| {
*count_ptr += 1;
timer2.close(||());
// Restart the original timer
let mut timer = timer;
do timer.start(1, 0) |timer, _| {
*count_ptr += 1;
timer.close(||());
}
}
}
};
}
loop_.run();
loop_.close();
assert!(count == 12);
}
}
}
|
