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//! A zero overhead Windows I/O library
#![cfg(windows)]
#![deny(missing_docs)]
#![allow(bad_style)]
use std::cmp;
use std::io;
use std::time::Duration;
use winapi::shared::minwindef::*;
use winapi::um::winbase::*;
#[cfg(test)]
macro_rules! t {
($e:expr) => {
match $e {
Ok(e) => e,
Err(e) => panic!("{} failed with {:?}", stringify!($e), e),
}
};
}
mod handle;
mod overlapped;
pub mod iocp;
pub mod net;
pub mod pipe;
pub use crate::overlapped::Overlapped;
fn cvt(i: BOOL) -> io::Result<BOOL> {
if i == 0 {
Err(io::Error::last_os_error())
} else {
Ok(i)
}
}
fn dur2ms(dur: Option<Duration>) -> u32 {
let dur = match dur {
Some(dur) => dur,
None => return INFINITE,
};
let ms = dur.as_secs().checked_mul(1_000);
let ms_extra = dur.subsec_nanos() / 1_000_000;
ms.and_then(|ms| ms.checked_add(ms_extra as u64))
.map(|ms| cmp::min(u32::max_value() as u64, ms) as u32)
.unwrap_or(INFINITE - 1)
}