1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
14 use rt::uv::{Watcher, Loop, NativeHandle, IdleCallback, NullCallback};
15 use rt::uv::status_to_maybe_uv_error;
17 pub struct IdleWatcher(*uvll::uv_idle_t);
18 impl Watcher for IdleWatcher { }
21 pub fn new(loop_: &mut Loop) -> IdleWatcher {
23 let handle = uvll::idle_new();
24 assert!(handle.is_not_null());
25 assert!(0 == uvll::idle_init(loop_.native_handle(), handle));
26 let mut watcher: IdleWatcher = NativeHandle::from_native_handle(handle);
27 watcher.install_watcher_data();
32 pub fn start(&mut self, cb: IdleCallback) {
34 let data = self.get_watcher_data();
35 data.idle_cb = Some(cb);
39 assert!(0 == uvll::idle_start(self.native_handle(), idle_cb))
42 extern fn idle_cb(handle: *uvll::uv_idle_t, status: c_int) {
43 let mut idle_watcher: IdleWatcher = NativeHandle::from_native_handle(handle);
44 let data = idle_watcher.get_watcher_data();
45 let cb: &IdleCallback = data.idle_cb.get_ref();
46 let status = status_to_maybe_uv_error(idle_watcher, status);
47 (*cb)(idle_watcher, status);
51 pub fn restart(&mut self) {
53 assert!(0 == uvll::idle_start(self.native_handle(), idle_cb))
56 extern fn idle_cb(handle: *uvll::uv_idle_t, status: c_int) {
57 let mut idle_watcher: IdleWatcher = NativeHandle::from_native_handle(handle);
58 let data = idle_watcher.get_watcher_data();
59 let cb: &IdleCallback = data.idle_cb.get_ref();
60 let status = status_to_maybe_uv_error(idle_watcher, status);
61 (*cb)(idle_watcher, status);
65 pub fn stop(&mut self) {
66 // NB: Not resetting the Rust idle_cb to None here because `stop` is
67 // likely called from *within* the idle callback, causing a use after
71 assert!(0 == uvll::idle_stop(self.native_handle()));
75 pub fn close(self, cb: NullCallback) {
78 let data = this.get_watcher_data();
79 assert!(data.close_cb.is_none());
80 data.close_cb = Some(cb);
83 unsafe { uvll::close(self.native_handle(), close_cb) };
85 extern fn close_cb(handle: *uvll::uv_idle_t) {
87 let mut idle_watcher: IdleWatcher = NativeHandle::from_native_handle(handle);
89 let data = idle_watcher.get_watcher_data();
90 data.close_cb.take_unwrap()();
92 idle_watcher.drop_watcher_data();
93 uvll::idle_delete(handle);
99 impl NativeHandle<*uvll::uv_idle_t> for IdleWatcher {
100 fn from_native_handle(handle: *uvll::uv_idle_t) -> IdleWatcher {
103 fn native_handle(&self) -> *uvll::uv_idle_t {
104 match self { &IdleWatcher(ptr) => ptr }
113 use unstable::run_in_bare_thread;
116 #[ignore(reason = "valgrind - loop destroyed before watcher?")]
117 fn idle_new_then_close() {
118 do run_in_bare_thread {
119 let mut loop_ = Loop::new();
120 let idle_watcher = { IdleWatcher::new(&mut loop_) };
121 idle_watcher.close(||());
126 fn idle_smoke_test() {
127 do run_in_bare_thread {
128 let mut loop_ = Loop::new();
129 let mut idle_watcher = { IdleWatcher::new(&mut loop_) };
131 let count_ptr: *mut int = &mut count;
132 do idle_watcher.start |idle_watcher, status| {
133 let mut idle_watcher = idle_watcher;
134 assert!(status.is_none());
135 if unsafe { *count_ptr == 10 } {
137 idle_watcher.close(||());
139 unsafe { *count_ptr = *count_ptr + 1; }
144 assert_eq!(count, 10);
149 fn idle_start_stop_start() {
150 do run_in_bare_thread {
151 let mut loop_ = Loop::new();
152 let mut idle_watcher = { IdleWatcher::new(&mut loop_) };
153 do idle_watcher.start |idle_watcher, status| {
154 let mut idle_watcher = idle_watcher;
155 assert!(status.is_none());
157 do idle_watcher.start |idle_watcher, status| {
158 assert!(status.is_none());
159 let mut idle_watcher = idle_watcher;
161 idle_watcher.close(||());