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// Licensed under the Apache License, Version 2.0
// All files in the project carrying such notice may not be copied, modified, or distributed
// except according to those terms.
use {Result, k32, last_error, w};
use std::os::windows::io::{AsRawHandle};
use thread::{Thread};
pub fn queue<T>(func: T, thread: &Thread) -> Result<()> where T: FnOnce() + 'static {
unsafe extern "system" fn helper<T: FnOnce() + 'static>(thing: w::ULONG_PTR) {
let func = Box::from_raw(thing as *mut T);
func()
}
let thing = Box::into_raw(Box::new(func)) as w::ULONG_PTR;
match unsafe { k32::QueueUserAPC(Some(helper::<T>), thread.as_raw_handle(), thing) } {
0 => {
// If it fails we still need to deallocate the function
unsafe { Box::from_raw(thing as *mut T) };
last_error()
},
_ => Ok(()),
}
}
pub fn queue_current<T>(func: T) -> Result<()> where T: FnOnce() + 'static {
unsafe extern "system" fn helper<T: FnOnce() + 'static>(thing: w::ULONG_PTR) {
let func = Box::from_raw(thing as *mut T);
func()
}
let thing = Box::into_raw(Box::new(func)) as w::ULONG_PTR;
match unsafe { k32::QueueUserAPC(Some(helper::<T>), k32::GetCurrentThread(), thing) } {
0 => {
// If it fails we still need to deallocate the function
unsafe { Box::from_raw(thing as *mut T) };
last_error()
},
_ => Ok(()),
}
}