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hydra-queue-runner: Handle exceptions in the dispatcher thread

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E.g. "resource unavailable" when creating new threads.
This commit is contained in:
Eelco Dolstra 2016-11-08 11:25:43 +01:00
parent 7863d2e1da
commit de9d7bcf25
1 changed files with 23 additions and 15 deletions
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38
src/hydra-queue-runner/dispatcher.cc
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@ -32,28 +32,36 @@ void State::makeRunnable(Step::ptr step)
void State::dispatcher()
{
while (true) {
printMsg(lvlDebug, "dispatcher woken up");
nrDispatcherWakeups++;
auto now1 = std::chrono::steady_clock::now();
try {
printMsg(lvlDebug, "dispatcher woken up");
nrDispatcherWakeups++;
auto sleepUntil = doDispatch();
auto now1 = std::chrono::steady_clock::now();
auto now2 = std::chrono::steady_clock::now();
auto sleepUntil = doDispatch();
dispatchTimeMs += std::chrono::duration_cast<std::chrono::milliseconds>(now2 - now1).count();
auto now2 = std::chrono::steady_clock::now();
/* Sleep until we're woken up (either because a runnable build
is added, or because a build finishes). */
{
auto dispatcherWakeup_(dispatcherWakeup.lock());
if (!*dispatcherWakeup_) {
printMsg(lvlDebug, format("dispatcher sleeping for %1%s") %
std::chrono::duration_cast<std::chrono::seconds>(sleepUntil - std::chrono::system_clock::now()).count());
dispatcherWakeup_.wait_until(dispatcherWakeupCV, sleepUntil);
dispatchTimeMs += std::chrono::duration_cast<std::chrono::milliseconds>(now2 - now1).count();
/* Sleep until we're woken up (either because a runnable build
is added, or because a build finishes). */
{
auto dispatcherWakeup_(dispatcherWakeup.lock());
if (!*dispatcherWakeup_) {
printMsg(lvlDebug, format("dispatcher sleeping for %1%s") %
std::chrono::duration_cast<std::chrono::seconds>(sleepUntil - std::chrono::system_clock::now()).count());
dispatcherWakeup_.wait_until(dispatcherWakeupCV, sleepUntil);
}
*dispatcherWakeup_ = false;
}
*dispatcherWakeup_ = false;
} catch (std::exception & e) {
printMsg(lvlError, format("dispatcher: %1%") % e.what());
sleep(1);
}
}
printMsg(lvlError, "dispatcher exits");