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tools: timer: style fixup

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Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Wolfgang Bumiller 2019-08-22 11:07:56 +02:00
parent b7f44ace92
commit b528fddfc6
1 changed files with 24 additions and 23 deletions
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47
src/tools/timer.rs
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@ -7,7 +7,7 @@ use std::mem::MaybeUninit;
use std::time::Duration;
use std::{io, mem};
use libc::{pid_t, clockid_t, c_int};
use libc::{c_int, clockid_t, pid_t};
/// Timers can use various clocks. See `timer_create(2)`.
pub enum Clock {
@ -69,20 +69,16 @@ struct InternalTimerT(u32);
type TimerT = *mut InternalTimerT;
// These wrappers are defined in -lrt.
#[link(name="rt")]
#[link(name = "rt")]
extern "C" {
fn timer_create(
clockid: clockid_t,
evp: *mut libc::sigevent,
timer: *mut TimerT,
) -> c_int;
fn timer_create(clockid: clockid_t, evp: *mut libc::sigevent, timer: *mut TimerT) -> c_int;
fn timer_delete(timer: TimerT) -> c_int;
fn timer_settime(
timerid: TimerT,
flags: c_int,
new_value: *const libc::itimerspec,
old_value: *mut libc::itimerspec,
) -> c_int;
) -> c_int;
}
/// Represents a POSIX per-process timer as created via `timer_create(2)`.
@ -141,17 +137,26 @@ impl TimerSpec {
/// Create an empty timer specification representing a disabled timer.
pub fn new() -> Self {
TimerSpec { value: None, interval: None }
TimerSpec {
value: None,
interval: None,
}
}
/// Change the specification to have a specific value.
pub fn value(self, value: Option<Duration>) -> Self {
TimerSpec { value, interval: self.interval }
TimerSpec {
value,
interval: self.interval,
}
}
/// Change the specification to have a specific interval.
pub fn interval(self, interval: Option<Duration>) -> Self {
TimerSpec { value: self.value, interval }
TimerSpec {
value: self.value,
interval,
}
}
}
@ -195,14 +200,11 @@ impl Timer {
}
/// Arm a timer. This returns the previous timer specification.
pub fn arm(&mut self, spec: TimerSpec) -> io::Result<TimerSpec>
{
pub fn arm(&mut self, spec: TimerSpec) -> io::Result<TimerSpec> {
let newspec = spec.to_itimerspec();
let mut oldspec = MaybeUninit::<libc::itimerspec>::uninit();
let rc = unsafe {
timer_settime(self.timer, 0, &newspec, &mut *oldspec.as_mut_ptr())
};
let rc = unsafe { timer_settime(self.timer, 0, &newspec, &mut *oldspec.as_mut_ptr()) };
if rc != 0 {
return Err(io::Error::last_os_error());
}
@ -229,8 +231,7 @@ pub const SIGTIMEOUT: Signal = Signal(32 + 4);
// Our timeout handler does exactly nothing. We only need it to interrupt
// system calls.
extern "C" fn sig_timeout_handler(_: c_int) {
}
extern "C" fn sig_timeout_handler(_: c_int) {}
// See setup_timeout_handler().
fn do_setup_timeout_handler() -> io::Result<()> {
@ -248,8 +249,8 @@ fn do_setup_timeout_handler() -> io::Result<()> {
unsafe {
let mut sa_mask = MaybeUninit::<libc::sigset_t>::uninit();
if libc::sigemptyset(&mut *sa_mask.as_mut_ptr()) != 0 ||
libc::sigaddset(&mut *sa_mask.as_mut_ptr(), SIGTIMEOUT.0) != 0
if libc::sigemptyset(&mut *sa_mask.as_mut_ptr()) != 0
|| libc::sigaddset(&mut *sa_mask.as_mut_ptr(), SIGTIMEOUT.0) != 0
{
return Err(io::Error::last_os_error());
}
@ -357,9 +358,9 @@ pub fn block_timeout_signal() {
unsafe {
let mut mask = MaybeUninit::<libc::sigset_t>::uninit();
if libc::sigemptyset(&mut *mask.as_mut_ptr()) != 0
|| libc::sigaddset(&mut *mask.as_mut_ptr(), SIGTIMEOUT.0) != 0
|| libc::pthread_sigmask(libc::SIG_BLOCK, &mask.assume_init(),
std::ptr::null_mut()) != 0
|| libc::sigaddset(&mut *mask.as_mut_ptr(), SIGTIMEOUT.0) != 0
|| libc::pthread_sigmask(libc::SIG_BLOCK, &mask.assume_init(), std::ptr::null_mut())
!= 0
{
panic!("Impossibly failed to block SIGTIMEOUT");
//return Err(io::Error::last_os_error());