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 TimerSource non-inline non-template implementation */
26 #include "TimerSource.hh"
27 //#include "TimerSource.ih"
30 #include "IdleEvent.hh"
31 #ifdef HAVE_TIMERFD_CREATE
32 #include TIMERFD_H_PATH
34 #include "senf/Utils/IgnoreValue.hh"
36 //#include "TimerSource.mpp"
38 //-/////////////////////////////////////////////////////////////////////////////////////////////////
40 //-/////////////////////////////////////////////////////////////////////////////////////////////////
41 // senf::scheduler::detail::TimerSource
43 prefix_ senf::scheduler::detail::TimerSource::~TimerSource()
46 //-/////////////////////////////////////////////////////////////////////////////////////////////////
47 // senf::scheduler::detail::POSIXTimerSource
49 prefix_ senf::scheduler::detail::POSIXTimerSource::POSIXTimerSource()
50 : timeoutEnabled_ (false), timeout_ (0), signalEnabled_ (false)
52 if (pipe(timerPipe_) < 0)
53 SENF_THROW_SYSTEM_EXCEPTION("pipe()");
54 FdManager::instance().set( timerPipe_[0], FdManager::EV_READ, this);
56 sigemptyset(&sigSet_);
57 sigaddset(&sigSet_, SIGALRM);
58 sigprocmask(SIG_BLOCK, &sigSet_, 0);
61 act.sa_sigaction = &sigHandler;
62 act.sa_mask = sigSet_;
63 act.sa_flags = SA_SIGINFO | SA_RESTART;
64 if (sigaction(SIGALRM, &act, 0) < 0)
65 SENF_THROW_SYSTEM_EXCEPTION("sigaction()");
68 ::memset(&ev, 0, sizeof(ev));
69 ev.sigev_notify = SIGEV_SIGNAL;
70 ev.sigev_signo = SIGALRM;
71 ev.sigev_value.sival_ptr = this;
72 if (timer_create(CLOCK_MONOTONIC, &ev, &timerId_) < 0)
73 SENF_THROW_SYSTEM_EXCEPTION("timer_create()");
76 prefix_ senf::scheduler::detail::POSIXTimerSource::~POSIXTimerSource()
78 timer_delete(timerId_);
79 ::signal(SIGALRM, SIG_IGN);
80 sigprocmask(SIG_UNBLOCK, &sigSet_, 0);
81 FdManager::instance().remove(timerPipe_[0]);
87 senf::scheduler::detail::POSIXTimerSource::timeout(ClockService::clock_type timeout)
89 if (! timeoutEnabled_ || timeout_ != timeout) {
93 timeoutEnabled_ = true;
98 prefix_ void senf::scheduler::detail::POSIXTimerSource::notimeout()
100 if (timeoutEnabled_) {
101 timeoutEnabled_ = false;
106 prefix_ void senf::scheduler::detail::POSIXTimerSource::enable()
108 if (! signalEnabled_) {
109 signalEnabled_ = true;
110 sigprocmask(SIG_UNBLOCK, &sigSet_, 0);
114 prefix_ void senf::scheduler::detail::POSIXTimerSource::disable()
116 if (signalEnabled_) {
117 signalEnabled_ = false;
118 sigprocmask(SIG_BLOCK, &sigSet_, 0);
122 prefix_ void senf::scheduler::detail::POSIXTimerSource::sigHandler(int,
123 ::siginfo_t * siginfo,
126 if (siginfo->si_value.sival_ptr == 0)
128 static char data = '\xD0';
129 // If the write fails there's not much we can do anyways ...
130 senf::IGNORE( write(static_cast<POSIXTimerSource*>(siginfo->si_value.sival_ptr)->timerPipe_[1],
131 &data, sizeof(data)) );
134 prefix_ void senf::scheduler::detail::POSIXTimerSource::signal(int events)
137 // This should never fail since we are reading a single character from a signaled
139 senf::IGNORE( read(timerPipe_[0], &data, sizeof(data)) );
140 timeoutEnabled_ = false;
143 prefix_ void senf::scheduler::detail::POSIXTimerSource::reschedule()
145 struct itimerspec timer;
146 memset(&timer, 0, sizeof(timer));
147 if (timeoutEnabled_) {
148 timer.it_value.tv_sec = ClockService::in_seconds(timeout_);
149 timer.it_value.tv_nsec = ClockService::in_nanoseconds(
150 timeout_ - ClockService::seconds(timer.it_value.tv_sec));
152 if (timer_settime(timerId_, TIMER_ABSTIME, &timer, 0)<0)
153 SENF_THROW_SYSTEM_EXCEPTION("timer_settime()");
156 //-/////////////////////////////////////////////////////////////////////////////////////////////////
157 // senf::scheduler::detail::PollTimerSource
159 prefix_ void senf::scheduler::detail::PollTimerSource::timeout(ClockService::clock_type timeout)
161 ClockService::clock_type now (ClockService::now());
162 int delay (ClockService::in_milliseconds(timeout-now)+1);
163 IdleEventDispatcher::instance().timeout(delay<0?0:delay);
166 prefix_ void senf::scheduler::detail::PollTimerSource::notimeout()
168 IdleEventDispatcher::instance().timeout(-1);
171 prefix_ void senf::scheduler::detail::PollTimerSource::enable()
174 prefix_ void senf::scheduler::detail::PollTimerSource::disable()
177 //-/////////////////////////////////////////////////////////////////////////////////////////////////
178 // senf::scheduler::detail::TimerFDTimerSource
180 #ifdef HAVE_TIMERFD_CREATE
181 prefix_ senf::scheduler::detail::TimerFDTimerSource::TimerFDTimerSource()
182 : timerfd_ (-1), timeoutEnabled_ (false), timeout_ (0)
184 timerfd_ = timerfd_create(CLOCK_MONOTONIC, 0);
186 SENF_THROW_SYSTEM_EXCEPTION("timerfd_create()");
187 FdManager::instance().set( timerfd_, FdManager::EV_READ, this);
190 prefix_ senf::scheduler::detail::TimerFDTimerSource::~TimerFDTimerSource()
192 FdManager::instance().remove(timerfd_);
197 senf::scheduler::detail::TimerFDTimerSource::timeout(ClockService::clock_type timeout)
199 if (!timeoutEnabled_ || timeout_ != timeout) {
203 timeoutEnabled_ = true;
208 prefix_ void senf::scheduler::detail::TimerFDTimerSource::notimeout()
210 if (timeoutEnabled_) {
211 timeoutEnabled_ = false;
216 prefix_ void senf::scheduler::detail::TimerFDTimerSource::enable()
219 prefix_ void senf::scheduler::detail::TimerFDTimerSource::disable()
230 TimerFdCheck::TimerFdCheck()
233 int fd (timerfd_create(CLOCK_MONOTONIC, 0));
236 SENF_THROW_SYSTEM_EXCEPTION("timerfd_create()");
245 prefix_ bool senf::scheduler::detail::TimerFDTimerSource::haveTimerFD()
247 static TimerFdCheck check;
248 return check.timerFdOk;
251 prefix_ void senf::scheduler::detail::TimerFDTimerSource::signal(int events)
253 uint64_t expirations (0);
254 // We ignore the return value since we ignore the value read anyways
255 senf::IGNORE( read(timerfd_, &expirations, sizeof(expirations)) );
258 prefix_ void senf::scheduler::detail::TimerFDTimerSource::reschedule()
260 struct itimerspec timer;
261 memset(&timer, 0, sizeof(timer));
262 if (timeoutEnabled_) {
263 timer.it_value.tv_sec = ClockService::in_seconds(timeout_);
264 timer.it_value.tv_nsec = ClockService::in_nanoseconds(
265 timeout_ - ClockService::seconds(timer.it_value.tv_sec));
267 if (timerfd_settime(timerfd_, TFD_TIMER_ABSTIME, &timer, 0)<0)
268 SENF_THROW_SYSTEM_EXCEPTION("timerfd_settime()");
272 //-/////////////////////////////////////////////////////////////////////////////////////////////////
274 //#include "TimerSource.mpp"
280 // comment-column: 40
281 // c-file-style: "senf"
282 // indent-tabs-mode: nil
283 // ispell-local-dictionary: "american"
284 // compile-command: "scons -u test"