X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=Scheduler%2FTimerSource.cc;h=fe6b7d1a380932e13fbb5764dd2870a65a14a3c0;hb=532240d72e09e19e57fac9bb55c2560b9c9e5b97;hp=84048b09fa03b08d7ab3aed197cd98024f1db730;hpb=b76d83f9671e935cbd5f2c6873efae1f75d25dac;p=senf.git

diff --git a/Scheduler/TimerSource.cc b/Scheduler/TimerSource.cc
index 84048b0..fe6b7d1 100644
--- a/Scheduler/TimerSource.cc
+++ b/Scheduler/TimerSource.cc
@@ -28,6 +28,9 @@
 
 // Custom includes
 #include "FdEvent.hh"
+#ifdef HAVE_TIMERFD
+#include <sys/timerfd.h>
+#endif
 
 //#include "TimerSource.mpp"
 #define prefix_
@@ -168,6 +171,101 @@ prefix_ void senf::scheduler::detail::PollTimerSource::enable()
 prefix_ void senf::scheduler::detail::PollTimerSource::disable()
 {}
 
+///////////////////////////////////////////////////////////////////////////
+// senf::scheduler::detail::TimerFDTimerSource
+
+#ifdef HAVE_TIMERFD
+prefix_ senf::scheduler::detail::TimerFDTimerSource::TimerFDTimerSource()
+    : timerfd_ (-1), timeoutEnabled_ (false), timeout_ (0)
+{
+    timerfd_ = timerfd_create(CLOCK_MONOTONIC, 0);
+    if (timerfd_ < 0)
+        SENF_THROW_SYSTEM_EXCEPTION("timerfd_create()");
+    senf::scheduler::detail::FdManager::instance().set(
+        timerfd_, detail::FdManager::EV_READ, this);
+}
+
+prefix_ senf::scheduler::detail::TimerFDTimerSource::~TimerFDTimerSource()
+{
+    senf::scheduler::detail::FdManager::instance().remove(timerfd_);
+    close(timerfd_);
+}
+
+prefix_ void
+senf::scheduler::detail::TimerFDTimerSource::timeout(ClockService::clock_type timeout)
+{
+    if (!timeoutEnabled_ || timeout_ != timeout) {
+        timeout_ = timeout;
+        if (timeout_ <= 0)
+            timeout_ = 1;
+        timeoutEnabled_ = true;
+        reschedule();
+    }
+}
+
+prefix_ void senf::scheduler::detail::TimerFDTimerSource::notimeout()
+{
+    if (timeoutEnabled_) {
+        timeoutEnabled_ = false;
+        reschedule();
+    }
+}
+
+prefix_ void senf::scheduler::detail::TimerFDTimerSource::enable()
+{}
+
+prefix_ void senf::scheduler::detail::TimerFDTimerSource::disable()
+{}
+
+namespace {
+
+    struct TimerFdCheck
+    {
+        TimerFdCheck();
+        bool timerFdOk;
+    };
+
+    TimerFdCheck::TimerFdCheck()
+        : timerFdOk (false)
+    {
+        int fd (timerfd_create(CLOCK_MONOTONIC, 0));
+        if (fd == -1) {
+            if (errno != EINVAL)
+                SENF_THROW_SYSTEM_EXCEPTION("timerfd_create()");
+        }
+        else {
+            timerFdOk = true;
+            close(fd);
+        }
+    }
+
+}
+prefix_ bool senf::scheduler::detail::TimerFDTimerSource::haveTimerFD()
+{
+    static TimerFdCheck check;
+    return check.timerFdOk;
+}
+
+prefix_ void senf::scheduler::detail::TimerFDTimerSource::signal(int events)
+{
+    uint64_t expirations (0);
+    read(timerfd_, &expirations, sizeof(expirations));
+}
+
+prefix_ void senf::scheduler::detail::TimerFDTimerSource::reschedule()
+{
+    struct itimerspec timer;
+    memset(&timer, 0, sizeof(timer));
+    if (timeoutEnabled_) {
+        timer.it_value.tv_sec = ClockService::in_seconds(timeout_);
+        timer.it_value.tv_nsec = ClockService::in_nanoseconds(
+            timeout_ - ClockService::seconds(timer.it_value.tv_sec));
+    }
+    if (timerfd_settime(timerfd_, TIMER_ABSTIME, &timer, 0)<0)
+        SENF_THROW_SYSTEM_EXCEPTION("timerfd_settime()");
+}
+#endif
+
 ///////////////////////////////cc.e////////////////////////////////////////
 #undef prefix_
 //#include "TimerSource.mpp"