Sha256: 575cfdbe9befc22b1e8fa91e15f303d830b23673d07a5361992229e0440081b2
Contents?: true
Size: 1.14 KB
Versions: 19
Compression:
Stored size: 1.14 KB
Contents
use super::*;
#[doc(hidden)]
pub struct Waiter(isize);
pub struct WaiterSignaler(isize);
impl Waiter {
pub fn new() -> crate::Result<(Waiter, WaiterSignaler)> {
unsafe {
let handle = CreateEventW(std::ptr::null(), 1, 0, std::ptr::null());
if handle == 0 {
Err(crate::Error::from_win32())
} else {
Ok((Waiter(handle), WaiterSignaler(handle)))
}
}
}
}
impl WaiterSignaler {
/// # Safety
/// Signals the `Waiter`. This is unsafe because the lifetime of `WaiterSignaler` is not tied
/// to the lifetime of the `Waiter`. This is not possible in this case because the `Waiter`
/// is used to signal a WinRT async completion and the compiler doesn't know that the lifetime
/// of the delegate is bounded by the calling function.
pub unsafe fn signal(&self) {
// https://github.com/microsoft/windows-rs/pull/374#discussion_r535313344
SetEvent(self.0);
}
}
impl Drop for Waiter {
fn drop(&mut self) {
unsafe {
WaitForSingleObject(self.0, 0xFFFFFFFF);
CloseHandle(self.0);
}
}
}
Version data entries
19 entries across 19 versions & 1 rubygems