func (t *timer) runTimer(env *proc.Env) (err error) {
for req, any := env.GetRequest(); any; req, any = env.GetRequest() {
dur := req.(time.Duration)
log.Debug(" .. sleep %v ..", dur)
time.Sleep(dur)
afterSleep := time.Now()
env.PutReply(afterSleep)
}
return nil
}
func (ic *incoming) runIncoming(env *proc.Env) error {
ierr := ic.uniform.SetWriteInterrupt(env.Cancel)
if ierr != nil {
return ierr
}
// TODO: expand buf API and use it here
for {
// This is a kludge to try to avoid starving other goroutines in the event that we constantly
// have something to read. In particular, we might starve the outgoing goroutine in that case.
runtime.Gosched()
env.CancellationPoint()
log.Debug("[ - reading up to %d bytes", cap(ic.inBuf)-len(ic.inBuf))
rn, err := ic.visible.Read(ic.inBuf[len(ic.inBuf):cap(ic.inBuf)])
if err != nil {
return err
}
log.Debug("[- read %d bytes", rn)
ic.inBuf = ic.inBuf[:len(ic.inBuf)+rn]
env.CancellationPoint()
dn, sn := ic.decoder.UnshapeBytes(ic.pushBuf[len(ic.pushBuf):cap(ic.pushBuf)], ic.inBuf)
log.Debug("[-- unshaped %d from %d bytes", dn, sn)
ic.pushBuf = ic.pushBuf[:len(ic.pushBuf)+dn]
ic.inBuf = ic.inBuf[:copy(ic.inBuf, ic.inBuf[sn:])]
env.CancellationPoint()
log.Debug("[ uniform: %d bytes", len(ic.pushBuf))
wn, err := ic.uniform.Write(ic.pushBuf)
if err != nil && err != io.ErrShortWrite {
return err
}
ic.pushBuf = ic.pushBuf[:copy(ic.pushBuf, ic.pushBuf[wn:])]
}
}
func (sh *Shaper) runShaper(env *proc.Env) (err error) {
select {
case _ = <-env.Cancel:
return env.ExitCanceled()
}
}