diff options
Diffstat (limited to 'src/sys/select.rs')
| -rw-r--r-- | src/sys/select.rs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/sys/select.rs b/src/sys/select.rs index a8035f79..0a0e830d 100644 --- a/src/sys/select.rs +++ b/src/sys/select.rs @@ -1,3 +1,4 @@ +//! Portably monitor a group of file descriptors for readiness. use std::iter::FusedIterator; use std::mem; use std::ops::Range; @@ -11,11 +12,13 @@ use crate::sys::time::{TimeSpec, TimeVal}; pub use libc::FD_SETSIZE; +/// Contains a set of file descriptors used by [`select`] #[repr(transparent)] #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)] pub struct FdSet(libc::fd_set); impl FdSet { + /// Create an empty `FdSet` pub fn new() -> FdSet { let mut fdset = mem::MaybeUninit::uninit(); unsafe { @@ -24,18 +27,22 @@ impl FdSet { } } + /// Add a file descriptor to an `FdSet` pub fn insert(&mut self, fd: RawFd) { unsafe { libc::FD_SET(fd, &mut self.0) }; } + /// Remove a file descriptor from an `FdSet` pub fn remove(&mut self, fd: RawFd) { unsafe { libc::FD_CLR(fd, &mut self.0) }; } + /// Test an `FdSet` for the presence of a certain file descriptor. pub fn contains(&self, fd: RawFd) -> bool { unsafe { libc::FD_ISSET(fd, &self.0) } } + /// Remove all file descriptors from this `FdSet`. pub fn clear(&mut self) { unsafe { libc::FD_ZERO(&mut self.0) }; } |