4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
6 // Stefan Bund <g0dil@berlios.de>
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the
20 // Free Software Foundation, Inc.,
21 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 \brief Scheduler non-inline non-template implementation
26 \idea Multithreading support: To support multithreading, the
27 static member Scheduler::instance() must return a thread-local
28 value (that is Scheduler::instance() must allocate one Scheduler
29 instance per thread). Another possibility would be to distribute
30 the async load unto several threads (one scheduler for multiple
34 #include "Scheduler.hh"
35 //#include "Scheduler.ih"
40 ///////////////////////////////cc.p////////////////////////////////////////
43 bool terminate_ (false);
46 prefix_ void senf::scheduler::terminate()
53 // We don't want try { } catch(...) { ... throw; } since that will make debugging more
54 // difficult: the stack backtrace for an unexpected exception would always end here.
55 struct SchedulerScopedInit
59 senf::scheduler::detail::FIFORunner::instance().startWatchdog();
60 senf::scheduler::detail::SignalDispatcher::instance().unblockSignals();
61 senf::scheduler::detail::TimerDispatcher::instance().enable();
64 ~SchedulerScopedInit()
66 senf::scheduler::detail::TimerDispatcher::instance().disable();
67 senf::scheduler::detail::SignalDispatcher::instance().blockSignals();
68 senf::scheduler::detail::FIFORunner::instance().stopWatchdog();
73 prefix_ void senf::scheduler::process()
75 SchedulerScopedInit initScheduler;
77 detail::TimerDispatcher::instance().reschedule();
78 while(! terminate_ && ! (detail::FdDispatcher::instance().empty() &&
79 detail::TimerDispatcher::instance().empty() &&
80 detail::FileDispatcher::instance().empty())) {
81 detail::FdManager::instance().processOnce();
82 detail::FileDispatcher::instance().prepareRun();
83 detail::EventHookDispatcher::instance().prepareRun();
84 detail::TimerDispatcher::instance().prepareRun();
85 detail::FIFORunner::instance().run();
86 detail::TimerDispatcher::instance().reschedule();
90 prefix_ void senf::scheduler::restart()
92 detail::FdManager* fdm (&detail::FdManager::instance());
93 detail::FIFORunner* ffr (&detail::FIFORunner::instance());
94 detail::FdDispatcher* fdd (&detail::FdDispatcher::instance());
95 detail::TimerDispatcher* tdd (&detail::TimerDispatcher::instance());
96 detail::SignalDispatcher* sdd (&detail::SignalDispatcher::instance());
97 detail::FileDispatcher* fld (&detail::FileDispatcher::instance());
98 detail::EventHookDispatcher* eed (&detail::EventHookDispatcher::instance());
100 eed->~EventHookDispatcher();
101 fld->~FileDispatcher();
102 sdd->~SignalDispatcher();
103 tdd->~TimerDispatcher();
104 fdd->~FdDispatcher();
108 new (fdm) detail::FdManager();
109 new (ffr) detail::FIFORunner();
110 new (fdd) detail::FdDispatcher();
111 new (tdd) detail::TimerDispatcher();
112 new (sdd) detail::SignalDispatcher();
113 new (fld) detail::FileDispatcher();
114 new (eed) detail::EventHookDispatcher();
117 prefix_ bool senf::scheduler::empty()
119 return detail::FdDispatcher::instance().empty()
120 && detail::TimerDispatcher::instance().empty()
121 && detail::FileDispatcher::instance().empty()
122 && detail::SignalDispatcher::instance().empty()
123 && detail::EventHookDispatcher::instance().empty();
126 ///////////////////////////////////////////////////////////////////////////
127 // senf::schedulerLogTimeSource
129 prefix_ senf::log::time_type senf::scheduler::LogTimeSource::operator()()
135 ///////////////////////////////cc.e////////////////////////////////////////
142 // c-file-style: "senf"
143 // indent-tabs-mode: nil
144 // ispell-local-dictionary: "american"
145 // compile-command: "scons -u test"
146 // comment-column: 40