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use libc;
pub use self::imp::*;
#[cfg(unix)]
mod imp {
use std::os::unix::prelude::*;
use std::io;
use libc;
pub use libc::fd_set;
pub fn fd_set<F: AsRawFd>(set: &mut fd_set, f: &F) {
unsafe {
libc::FD_SET(f.as_raw_fd(), set);
}
}
pub unsafe fn select<F: AsRawFd>(max: &F,
read: *mut fd_set,
write: *mut fd_set,
error: *mut fd_set,
timeout_ms: u32)
-> io::Result<bool> {
let mut timeout = libc::timeval {
tv_sec: (timeout_ms / 1000) as libc::time_t,
tv_usec: (timeout_ms % 1000 * 1000) as libc::suseconds_t,
};
let rc = libc::select(max.as_raw_fd() + 1, read, write, error, &mut timeout);
if rc < 0 {
Err(io::Error::last_os_error())
} else {
Ok(rc != 0)
}
}
}
#[cfg(windows)]
mod imp {
extern crate winapi;
extern crate ws2_32;
use std::os::windows::prelude::*;
use std::io;
use libc::{c_uint, c_long};
use self::winapi::SOCKET;
use self::winapi::winsock2;
pub use self::winapi::winsock2::fd_set;
pub fn fd_set<F: AsRawSocket>(set: &mut fd_set, f: &F) {
set.fd_array[set.fd_count as usize] = f.as_raw_socket();
set.fd_count += 1;
}
pub unsafe fn select<F: AsRawSocket>(_max: &F,
read: *mut fd_set,
write: *mut fd_set,
error: *mut fd_set,
timeout_ms: u32)
-> io::Result<bool> {
let mut timeout = winsock2::timeval {
tv_sec: (timeout_ms / 1000) as c_long,
tv_usec: (timeout_ms % 1000 * 1000) as c_long,
};
let rc = ws2_32::select(1, read, write, error, &mut timeout);
if rc < 0 {
Err(io::Error::last_os_error())
} else {
Ok(rc != 0)
}
}
}
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