#include <fcntl.h>
#include <unistd.h>
+#include <errno.h>
#include <lib/base/eerror.h>
+#include <lib/base/elock.h>
eSocketNotifier::eSocketNotifier(eMainloop *context, int fd, int requested, bool startnow): context(*context), fd(fd), state(0), requested(requested)
{
bActive = true;
bSingleShot = singleShot;
interval = msek;
- gettimeofday(&nextActivation, 0);
-// eDebug("this = %p\nnow sec = %d, usec = %d\nadd %d msec", this, nextActivation.tv_sec, nextActivation.tv_usec, msek);
+ gettimeofday(&nextActivation, 0);
nextActivation += (msek<0 ? 0 : msek);
+// eDebug("this = %p\nnow sec = %d, usec = %d\nadd %d msec", this, nextActivation.tv_sec, nextActivation.tv_usec, msek);
+// eDebug("next Activation sec = %d, usec = %d", nextActivation.tv_sec, nextActivation.tv_usec );
+ context.addTimer(this);
+}
+
+void eTimer::startLongTimer( int seconds )
+{
+ if (bActive)
+ stop();
+
+ bActive = bSingleShot = true;
+ interval = 0;
+ gettimeofday(&nextActivation, 0);
+// eDebug("this = %p\nnow sec = %d, usec = %d\nadd %d sec", this, nextActivation.tv_sec, nextActivation.tv_usec, seconds);
+ if ( seconds > 0 )
+ nextActivation.tv_sec += seconds;
// eDebug("next Activation sec = %d, usec = %d", nextActivation.tv_sec, nextActivation.tv_usec );
context.addTimer(this);
}
nextActivation -= interval; // sub old interval
}
else
- bActive=true; // then activate Timer
+ bActive=true; // then activate Timer
interval = msek; // set new Interval
nextActivation += interval; // calc nextActivation
void eTimer::activate() // Internal Funktion... called from eApplication
{
- timeval now;
- gettimeofday(&now, 0);
-// eDebug("this = %p\nnow sec = %d, usec = %d\nnextActivation sec = %d, usec = %d", this, now.tv_sec, now.tv_usec, nextActivation.tv_sec, nextActivation.tv_usec );
-// eDebug("Timer emitted");
context.removeTimer(this);
if (!bSingleShot)
/*emit*/ timeout();
}
+void eTimer::addTimeOffset( int offset )
+{
+ nextActivation.tv_sec += offset;
+}
+
// mainloop
+ePtrList<eMainloop> eMainloop::existing_loops;
void eMainloop::addSocketNotifier(eSocketNotifier *sn)
{
void eMainloop::processOneEvent()
{
-// process pending timers...
- long usec=0;
-
- while (TimerList && (usec = timeout_usec( TimerList.begin()->getNextActivation() ) ) <= 0 )
- TimerList.begin()->activate();
-
- int fdAnz = notifiers.size();
- pollfd* pfd = new pollfd[fdAnz]; // make new pollfd array
-
-// fill pfd array
- std::map<int,eSocketNotifier*>::iterator it(notifiers.begin());
- for (int i=0; i < fdAnz; i++, it++)
+ /* notes:
+ - we should use epoll(4)
+ - timer are checked twice. there was a strong reason for it, but i can't remember. (FIXME)
+ - for each time, we gettimeofday() and check wether the timer should fire.
+ we should do this all better - we know how long the poll last, so we know which
+ timers should fire. Problem is that a timer handler could have required so
+ much time that another timer fired.
+
+ A probably structure could look
+
+ while (1)
+ {
+ time = gettimeofday()
+ timeout = calculate_pending_timers(time);
+
+ doPoll(timeout or infinite);
+
+ if (poll_had_results)
+ handle_poll_handler();
+ else
+ fire_timers(time + timeout)
+ }
+
+ the gettimeofday() call is required because fire_timers could last more
+ than nothing.
+
+ when poll did no timeout, we don't handle timers, as this will be done
+ in the next iteration (without adding overhead - we had to get the new
+ time anyway
+ */
+
+ /* get current time */
+ timeval now;
+ gettimeofday(&now, 0);
+ m_now_is_invalid = 0;
+
+ int poll_timeout = -1; /* infinite in case of empty timer list */
+
+ if (m_timer_list)
{
- pfd[i].fd = it->first;
- pfd[i].events = it->second->getRequested();
+ singleLock s(recalcLock);
+ poll_timeout = timeval_to_usec(m_timer_list.begin()->getNextActivation() - now);
+ /* if current timer already passed, don't delay infinite. */
+ if (poll_timeout < 0)
+ poll_timeout = 0;
+
+ /* convert us to ms */
+ poll_timeout /= 1000;
}
+
+ int ret = 0;
- int ret=poll(pfd, fdAnz, TimerList ? usec / 1000 : -1); // milli .. not micro seks
-
- if (ret>0)
+ if (poll_timeout)
{
-// eDebug("bin aussem poll raus und da war was");
- for (int i=0; i < fdAnz ; i++)
+ // build the poll aray
+ int fdcount = notifiers.size();
+ pollfd* pfd = new pollfd[fdcount]; // make new pollfd array
+
+ std::map<int,eSocketNotifier*>::iterator it(notifiers.begin());
+ for (int i=0; i < fdcount; i++, it++)
{
- if( notifiers.find(pfd[i].fd) == notifiers.end())
- continue;
+ pfd[i].fd = it->first;
+ pfd[i].events = it->second->getRequested();
+ }
- int req = notifiers[pfd[i].fd]->getRequested();
+ ret = poll(pfd, fdcount, poll_timeout);
- if ( pfd[i].revents & req )
+ /* ret > 0 means that there are some active poll entries. */
+ if (ret > 0)
+ {
+ for (int i=0; i < fdcount ; i++)
{
- notifiers[pfd[i].fd]->activate(pfd[i].revents);
-
- if (!--ret)
- break;
- } else if (pfd[i].revents & (POLLERR|POLLHUP|POLLNVAL))
- eDebug("poll: unhandled POLLERR/HUP/NVAL for fd %d(%d)", pfd[i].fd,pfd[i].revents);
+ if (notifiers.find(pfd[i].fd) == notifiers.end())
+ continue;
+
+ int req = notifiers[pfd[i].fd]->getRequested();
+
+ if (pfd[i].revents & req)
+ {
+ notifiers[pfd[i].fd]->activate(pfd[i].revents);
+
+ if (!--ret)
+ break;
+ } else if (pfd[i].revents & (POLLERR|POLLHUP|POLLNVAL))
+ eFatal("poll: unhandled POLLERR/HUP/NVAL for fd %d(%d) -> FIX YOUR CODE", pfd[i].fd,pfd[i].revents);
+ }
+ } else if (ret < 0)
+ {
+ /* when we got a signal, we get EINTR. we do not care,
+ because we check current time in timers anyway. */
+ if (errno != EINTR)
+ eDebug("poll made error (%m)");
+ else
+ ret = 0;
}
+ delete [] pfd;
}
- else if (ret<0)
- eDebug("poll made error");
-
- // check Timers...
- while ( TimerList && timeout_usec( TimerList.begin()->getNextActivation() ) <= 0 )
- TimerList.begin()->activate();
+
+ /* when we not processed anything, check timers. */
+ if (!ret)
+ {
+ /* we know that this time has passed. */
+ now += poll_timeout;
+
+ singleLock s(recalcLock);
+
+ /* this will never change while we have the recalcLock */
+ /* we can savely return here, the timer will be re-checked soon. */
+ if (m_now_is_invalid)
+ return;
+
+ /* process all timers which are ready. first remove them out of the list. */
+ while ((!m_timer_list.empty()) && (m_timer_list.begin()->getNextActivation() <= now))
+ m_timer_list.begin()->activate();
+ }
+}
- delete [] pfd;
+void eMainloop::addTimer(eTimer* e)
+{
+ m_timer_list.insert_in_order(e);
}
+void eMainloop::removeTimer(eTimer* e)
+{
+ m_timer_list.remove(e);
+}
int eMainloop::exec()
{
if (!loop_level)
{
app_quit_now = false;
+ app_exit_loop = false;
enter_loop();
}
return retval;
void eMainloop::enter_loop()
{
loop_level++;
-
// Status der vorhandenen Loop merken
bool old_exit_loop = app_exit_loop;
-
+
app_exit_loop = false;
while (!app_exit_loop && !app_quit_now)
- {
processOneEvent();
- }
// wiederherstellen der vorherigen app_exit_loop
app_exit_loop = old_exit_loop;
- loop_level--;
+ --loop_level;
if (!loop_level)
{
- // do something here on exit the last loop
+ // do something here on exit the last loop
}
}
void eMainloop::exit_loop() // call this to leave the current loop
{
- app_exit_loop = true;
+ app_exit_loop = true;
}
void eMainloop::quit( int ret ) // call this to leave all loops
app_quit_now = true;
}
+void eMainloop::addTimeOffset(int offset)
+{
+ for (ePtrList<eMainloop>::iterator it(eMainloop::existing_loops)
+ ;it != eMainloop::existing_loops.end(); ++it)
+ {
+ singleLock s(it->recalcLock);
+ it->m_now_is_invalid = 1;
+ for (ePtrList<eTimer>::iterator tit = it->m_timer_list.begin(); tit != it->m_timer_list.end(); ++tit )
+ tit->addTimeOffset(offset);
+ }
+}
+
eApplication* eApp = 0;
projects / vuplus_dvbapp / blobdiff