X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c2ca375c5620209d77a88d2d378bdcdedbc82e7e..7be740a3fdba6e7203bd82c1674f48207dc00eed:/src/unix/timerunx.cpp

diff --git a/src/unix/timerunx.cpp b/src/unix/timerunx.cpp
index 12dc0bdf27..bcdebf9167 100644
--- a/src/unix/timerunx.cpp
+++ b/src/unix/timerunx.cpp
@@ -18,6 +18,8 @@
 
 #include "wx/wxprec.h"
 
+#if wxUSE_TIMER
+
 #ifndef WX_PRECOMP
     #include "wx/log.h"
     #include "wx/module.h"
@@ -27,7 +29,9 @@
     #include "wx/event.h"
 #endif
 
+#include "wx/apptrait.h"
 #include "wx/longlong.h"
+#include "wx/vector.h"
 
 #include <sys/time.h>
 #include <signal.h>
@@ -35,7 +39,7 @@
 #include "wx/unix/private/timer.h"
 
 #include "wx/listimpl.cpp"
-WX_DEFINE_LIST(wxTimerList);
+WX_DEFINE_LIST(wxTimerList)
 
 // trace mask for the debugging messages used here
 #define wxTrace_Timer wxT("timer")
@@ -131,16 +135,17 @@ bool wxTimerScheduler::GetNext(wxUsecClock_t *remaining) const
     return true;
 }
 
-void wxTimerScheduler::NotifyExpired()
+bool wxTimerScheduler::NotifyExpired()
 {
     if ( m_timers.empty() )
-      return;
+      return false;
 
     const wxUsecClock_t now = wxGetLocalTimeUsec();
 
-    wxTimerList::iterator cur,
-                          next;
-    for ( cur = m_timers.begin(); cur != m_timers.end(); cur = next )
+    typedef wxVector<wxUnixTimerImpl *> TimerImpls;
+    TimerImpls toNotify;
+    for ( wxTimerList::iterator next,
+            cur = m_timers.begin(); cur != m_timers.end(); cur = next )
     {
         wxTimerSchedule * const s = *cur;
         if ( s->m_expiration > now )
@@ -159,18 +164,43 @@ void wxTimerScheduler::NotifyExpired()
         wxUnixTimerImpl * const timer = s->m_timer;
         if ( timer->IsOneShot() )
         {
+            // the timer needs to be stopped but don't call its Stop() from
+            // here as it would attempt to remove the timer from our list and
+            // we had already done it, so we just need to reset its state
+            timer->MarkStopped();
+
             // don't need it any more
             delete s;
         }
         else // reschedule the next timer expiration
         {
-            s->m_expiration += timer->GetInterval()*1000;
+            // always keep the expiration time in the future, i.e. base it on
+            // the current time instead of just offsetting it from the current
+            // expiration time because it could happen that we're late and the
+            // current expiration time is (far) in the past
+            s->m_expiration = now + timer->GetInterval()*1000;
             DoAddTimer(s);
         }
 
-        // and finally notify the timer
-        timer->Notify();
+        // we can't notify the timer from this loop as the timer event handler
+        // could modify m_timers (for example, but not only, by stopping this
+        // timer) which would render our iterators invalid, so do it after the
+        // loop end
+        toNotify.push_back(timer);
+    }
+
+    if ( toNotify.empty() )
+        return false;
+
+    for ( TimerImpls::const_iterator i = toNotify.begin(),
+                                     end = toNotify.end();
+          i != end;
+          ++i )
+    {
+        (*i)->Notify();
     }
+
+    return true;
 }
 
 // ============================================================================
@@ -249,3 +279,10 @@ wxUsecClock_t wxGetLocalTimeUsec()
     return wxGetLocalTimeMillis() * 1000L;
 }
 
+wxTimerImpl *wxConsoleAppTraits::CreateTimerImpl(wxTimer *timer)
+{
+    return new wxUnixTimerImpl(timer);
+}
+
+#endif // wxUSE_TIMER
+