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Addressed code review comments.

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This commit is contained in:
Clark Gaebel 2014-10-27 14:19:44 -07:00
parent b0d16462ff
commit 293969cb7d
1 changed files with 11 additions and 5 deletions
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16
components/util/workqueue.rs
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@ -71,7 +71,9 @@ struct WorkerThread<QueueData, WorkData> {
rng: XorShiftRng,
}
static SPIN_COUNT: uint = 128;
static SPIN_COUNT: u32 = 128;
static SPINS_UNTIL_BACKOFF: u32 = 100;
static BACKOFF_INCREMENT_IN_US: u32 = 5;
impl<QueueData: Send, WorkData: Send> WorkerThread<QueueData, WorkData> {
/// The main logic. This function starts up the worker and listens for
@ -85,10 +87,11 @@ impl<QueueData: Send, WorkData: Send> WorkerThread<QueueData, WorkData> {
ExitMsg => return,
};
let mut back_off_sleep = 0 as u32;
// We're off!
//
// FIXME(pcwalton): Can't use labeled break or continue cross-crate due to a Rust bug.
let mut back_off_sleep = 0 as u32;
loop {
// FIXME(pcwalton): Nasty workaround for the lack of labeled break/continue
// cross-crate.
@ -114,10 +117,13 @@ impl<QueueData: Send, WorkData: Send> WorkerThread<QueueData, WorkData> {
}
}
if (i>100) {
unsafe {usleep(back_off_sleep as u32)};
back_off_sleep = back_off_sleep + 5;
if i > SPINS_UNTIL_BACKOFF {
unsafe {
usleep(back_off_sleep as u32);
}
back_off_sleep += BACKOFF_INCREMENT_IN_US;
}
if i == SPIN_COUNT {
match self.port.try_recv() {
Ok(StopMsg) => {