void
WorkerThread::Run()
{
PeriodClock clock;
while (true) {
/* wait for work */
event_trigger.Wait();
/* got the "stop" trigger? */
if (delay > 0
? WaitForStopped(delay)
: CheckStoppedOrSuspended())
break;
/* reset the trigger here, because our client might have called
Trigger() a few more times while we were suspended in
CheckStoppedOrSuspended() */
event_trigger.Reset();
if (IsCommandPending()) {
/* just in case we got another suspend/stop command after
CheckStoppedOrSuspended() returned and before the trigger got
reset: restore the trigger and skip this iteration, to fix
the race condition */
event_trigger.Signal();
continue;
}
/* do the actual work */
if (period_min > 0)
clock.Update();
Tick();
unsigned idle = idle_min;
if (period_min > 0) {
unsigned elapsed = clock.Elapsed();
if (elapsed + idle < period_min)
idle = period_min - elapsed;
}
if (idle > 0 && WaitForStopped(idle))
break;
}
}
void
TTYPort::Run()
{
char buffer[1024];
while (true) {
/* wait for data to arrive on the port */
switch (WaitRead(200)) {
case WaitResult::READY:
/* linger for a few more milliseconds so the device can send
some more data; without this, we would be waking up for every
single byte */
if (WaitForStopped(10))
return;
break;
case WaitResult::FAILED:
if (errno != EAGAIN && errno != EINTR) {
valid.Reset();
return;
}
/* non-fatal error, fall through */
case WaitResult::TIMEOUT:
case WaitResult::CANCELLED:
/* throttle */
if (WaitForStopped(500))
return;
continue;
}
ssize_t nbytes = read(fd, buffer, sizeof(buffer));
if (nbytes == 0 || (nbytes < 0 && errno != EAGAIN && errno != EINTR)) {
valid.Reset();
return;
}
if (nbytes > 0)
handler.DataReceived(buffer, nbytes);
}
Flush();
}
bool
SuspensibleThread::WaitForStopped(unsigned timeout_ms)
{
assert(Thread::IsInside());
const ScopeLock lock(mutex);
return WaitForStopped(timeout_ms);
}
void
TTYPort::Run()
{
char buffer[1024];
// XXX use poll()
while (!WaitForStopped(50)) {
ssize_t nbytes = read(fd, buffer, sizeof(buffer));
for (ssize_t i = 0; i < nbytes; ++i)
ProcessChar(buffer[i]);
}
Flush();
}
void
TTYPort::Run()
{
char buffer[1024];
// XXX use poll()
while (!WaitForStopped(50)) {
ssize_t nbytes = read(fd, buffer, sizeof(buffer));
if (nbytes > 0)
handler.DataReceived(buffer, nbytes);
}
Flush();
}
