namespace {
bool terminate_ (false);
+ bool running_ (false);
}
prefix_ void senf::scheduler::terminate()
terminate_ = true;
}
+prefix_ bool senf::scheduler::running()
+{
+ return running_;
+}
+
+prefix_ senf::ClockService::clock_type senf::scheduler::now()
+{
+ return running() ? eventTime() : ClockService::now();
+}
+
+namespace {
+
+ // We don't want try { } catch(...) { ... throw; } since that will make debugging more
+ // difficult: the stack backtrace for an unexpected exception would always end here.
+ struct SchedulerScopedInit
+ {
+ SchedulerScopedInit()
+ {
+ senf::scheduler::detail::FIFORunner::instance().startWatchdog();
+ senf::scheduler::detail::SignalDispatcher::instance().unblockSignals();
+ senf::scheduler::detail::TimerDispatcher::instance().enable();
+ running_ = true;
+ }
+
+ ~SchedulerScopedInit()
+ {
+ senf::scheduler::detail::TimerDispatcher::instance().disable();
+ senf::scheduler::detail::SignalDispatcher::instance().blockSignals();
+ senf::scheduler::detail::FIFORunner::instance().stopWatchdog();
+ running_ = false;
+ }
+ };
+}
+
prefix_ void senf::scheduler::process()
{
+ SchedulerScopedInit initScheduler;
terminate_ = false;
+ running_ = true;
+ detail::TimerDispatcher::instance().reschedule();
while(! terminate_ && ! (detail::FdDispatcher::instance().empty() &&
detail::TimerDispatcher::instance().empty() &&
detail::FileDispatcher::instance().empty())) {
- detail::SignalDispatcher::instance().unblockSignals();
- detail::TimerDispatcher::instance().unblockSignals();
detail::FdManager::instance().processOnce();
- detail::TimerDispatcher::instance().blockSignals();
- detail::SignalDispatcher::instance().blockSignals();
detail::FileDispatcher::instance().prepareRun();
detail::EventHookDispatcher::instance().prepareRun();
+ detail::TimerDispatcher::instance().prepareRun();
detail::FIFORunner::instance().run();
+ detail::TimerDispatcher::instance().reschedule();
}
}
detail::TimerDispatcher* tdd (&detail::TimerDispatcher::instance());
detail::SignalDispatcher* sdd (&detail::SignalDispatcher::instance());
detail::FileDispatcher* fld (&detail::FileDispatcher::instance());
- detail::EventHookDispatcher* eed (&detail::EventHookDispatcher::instance());
+ detail::EventHookDispatcher* eed (&detail::EventHookDispatcher::instance());
eed->~EventHookDispatcher();
fld->~FileDispatcher();
&& detail::EventHookDispatcher::instance().empty();
}
+prefix_ void senf::scheduler::hiresTimers()
+{
+#ifdef HAVE_TIMERFD
+ if (haveScalableHiresTimers())
+ detail::TimerDispatcher::instance().timerSource(
+ std::auto_ptr<detail::TimerSource>(new detail::TimerFDTimerSource()));
+ else
+#endif
+ detail::TimerDispatcher::instance().timerSource(
+ std::auto_ptr<detail::TimerSource>(new detail::POSIXTimerSource()));
+}
+
///////////////////////////////////////////////////////////////////////////
// senf::schedulerLogTimeSource
return eventTime();
}
+///////////////////////////////////////////////////////////////////////////
+// senf::scheduler::BlockSignals
+
+prefix_ senf::scheduler::BlockSignals::BlockSignals(bool initiallyBlocked)
+ : blocked_ (false)
+{
+ ::sigfillset(&allSigs_);
+ if (initiallyBlocked)
+ block();
+}
+
+prefix_ void senf::scheduler::BlockSignals::block()
+{
+ if (blocked_)
+ return;
+ ::sigprocmask(SIG_BLOCK, &allSigs_, &savedSigs_);
+ blocked_ = true;
+}
+
+prefix_ void senf::scheduler::BlockSignals::unblock()
+{
+ if (!blocked_)
+ return;
+ ::sigprocmask(SIG_SETMASK, &savedSigs_, 0);
+ blocked_ = false;
+}
+
///////////////////////////////cc.e////////////////////////////////////////
#undef prefix_