1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
#![cfg_attr(feature="nightly", feature(static_condvar))]
#![cfg_attr(feature="nightly", feature(static_mutex))]
#[cfg(feature="stable")]
#[macro_use]
extern crate lazy_static;
use std::sync::atomic::Ordering;
#[cfg(feature="nightly")]
mod features {
use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT};
use std::sync::{StaticCondvar, CONDVAR_INIT, StaticMutex, MUTEX_INIT};
pub static CVAR: StaticCondvar = CONDVAR_INIT;
pub static MUTEX: StaticMutex = MUTEX_INIT;
pub static DONE: AtomicBool = ATOMIC_BOOL_INIT;
}
#[cfg(not(feature="nightly"))]
mod features {
use std::sync::atomic::{AtomicBool, ATOMIC_BOOL_INIT};
use std::sync::{Condvar, Mutex};
lazy_static! {
pub static ref CVAR: Condvar = Condvar::new();
pub static ref MUTEX: Mutex<bool> = Mutex::new(false);
}
pub static DONE: AtomicBool = ATOMIC_BOOL_INIT;
}
use self::features::*;
#[cfg(unix)]
mod platform {
extern crate libc;
use self::libc::c_int;
use self::libc::types::os::common::posix01::sighandler_t;
use self::libc::consts::os::posix88::SIGINT;
use self::libc::funcs::posix01::signal::signal;
use std::sync::atomic::Ordering;
#[repr(C)]
pub fn handler(_: c_int) {
super::features::DONE.store(true, Ordering::Relaxed);
super::features::CVAR.notify_all();
}
#[inline]
pub unsafe fn set_os_handler(handler: fn(c_int)) {
signal(SIGINT, ::std::mem::transmute::<_, sighandler_t>(handler));
}
}
#[cfg(windows)]
mod platform {
extern crate winapi;
extern crate kernel32;
use self::kernel32::SetConsoleCtrlHandler;
use self::winapi::{BOOL, DWORD, TRUE};
use std::sync::atomic::Ordering;
pub unsafe extern "system" fn handler(_: DWORD) -> BOOL {
super::features::DONE.store(true, Ordering::Relaxed);
super::features::CVAR.notify_all();
TRUE
}
#[inline]
pub unsafe fn set_os_handler(handler: unsafe extern "system" fn(DWORD) -> BOOL) {
SetConsoleCtrlHandler(Some(handler), TRUE);
}
}
use self::platform::*;
pub struct CtrlC;
impl CtrlC {
pub fn set_handler<F: Fn() -> () + 'static + Send>(user_handler: F) -> () {
unsafe {
set_os_handler(handler);
}
::std::thread::spawn(move || {
loop {
if !DONE.load(Ordering::Relaxed) {
let _ = CVAR.wait(MUTEX.lock().unwrap());
DONE.store(false, Ordering::Relaxed);
}
user_handler();
}
});
}
}