--- /dev/null
+// $Id$
+//
+// Copyright (C) 2006
+// Fraunhofer Institute for Open Communication Systems (FOKUS)
+// Competence Center NETwork research (NET), St. Augustin, GERMANY
+// Stefan Bund <g0dil@berlios.de>
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the
+// Free Software Foundation, Inc.,
+// 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+/** \file
+ \brief Scheduler non-inline non-template implementation
+
+ \idea Multithreading support: To support multithreading, the
+ static member Scheduler::instance() must return a thread-local
+ value (that is Scheduler::instance() must allocate one Scheduler
+ instance per thread). Another possibility would be to distribute
+ the async load unto several threads (one scheduler for multiple
+ threads)
+ */
+
+#include "Scheduler.hh"
+//#include "Scheduler.ih"
+
+// Custom includes
+
+#define prefix_
+///////////////////////////////cc.p////////////////////////////////////////
+
+namespace {
+ bool terminate_ (false);
+ bool running_ (false);
+}
+
+prefix_ void senf::scheduler::terminate()
+{
+ terminate_ = true;
+}
+
+prefix_ void senf::scheduler::yield()
+{
+ senf::scheduler::detail::FIFORunner::instance().yield();
+}
+
+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;
+ detail::TimerDispatcher::instance().reschedule();
+ while(! terminate_ && ! (detail::FdDispatcher::instance().empty() &&
+ detail::TimerDispatcher::instance().empty() &&
+ detail::FileDispatcher::instance().empty() &&
+ detail::IdleEventDispatcher::instance().empty()) ) {
+ detail::FdManager::instance().processOnce();
+ detail::FileDispatcher::instance().prepareRun();
+ detail::EventHookDispatcher::instance().prepareRun();
+ detail::TimerDispatcher::instance().prepareRun();
+ detail::IdleEventDispatcher::instance().prepareRun();
+ detail::FIFORunner::instance().run();
+ detail::TimerDispatcher::instance().reschedule();
+ }
+}
+
+prefix_ void senf::scheduler::restart()
+{
+ detail::FdManager* fdm (&detail::FdManager::instance());
+ detail::FIFORunner* ffr (&detail::FIFORunner::instance());
+ detail::FdDispatcher* fdd (&detail::FdDispatcher::instance());
+ detail::TimerDispatcher* tdd (&detail::TimerDispatcher::instance());
+ detail::SignalDispatcher* sdd (&detail::SignalDispatcher::instance());
+ detail::FileDispatcher* fld (&detail::FileDispatcher::instance());
+ detail::IdleEventDispatcher* ied (&detail::IdleEventDispatcher::instance());
+ detail::EventHookDispatcher* eed (&detail::EventHookDispatcher::instance());
+
+ eed->~EventHookDispatcher();
+ ied->~IdleEventDispatcher();
+ fld->~FileDispatcher();
+ sdd->~SignalDispatcher();
+ tdd->~TimerDispatcher();
+ fdd->~FdDispatcher();
+ ffr->~FIFORunner();
+ fdm->~FdManager();
+
+ new (fdm) detail::FdManager();
+ new (ffr) detail::FIFORunner();
+ new (fdd) detail::FdDispatcher();
+ new (tdd) detail::TimerDispatcher();
+ new (sdd) detail::SignalDispatcher();
+ new (fld) detail::FileDispatcher();
+ new (ied) detail::IdleEventDispatcher();
+ new (eed) detail::EventHookDispatcher();
+}
+
+prefix_ bool senf::scheduler::empty()
+{
+ return detail::FdDispatcher::instance().empty()
+ && detail::TimerDispatcher::instance().empty()
+ && detail::FileDispatcher::instance().empty()
+ && detail::SignalDispatcher::instance().empty()
+ && detail::IdleEventDispatcher::instance().empty()
+ && 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
+
+prefix_ senf::log::time_type senf::scheduler::LogTimeSource::operator()()
+ const
+{
+ return senf::scheduler::now();
+}
+
+///////////////////////////////////////////////////////////////////////////
+// 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_
+
+\f
+// Local Variables:
+// mode: c++
+// fill-column: 100
+// c-file-style: "senf"
+// indent-tabs-mode: nil
+// ispell-local-dictionary: "american"
+// compile-command: "scons -u test"
+// comment-column: 40
+// End:
projects / senf.git / blobdiff