X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1d043598b7e6baae2e0a472a4133b8d60f0f45ec..3571e1add4e6ceb45ad88c224c432609f837a8dd:/src/unix/timerunx.cpp

diff --git a/src/unix/timerunx.cpp b/src/unix/timerunx.cpp
index 158736fcb3..eb2c4e02b1 100644
--- a/src/unix/timerunx.cpp
+++ b/src/unix/timerunx.cpp
@@ -31,6 +31,7 @@
 
 #include "wx/apptrait.h"
 #include "wx/longlong.h"
+#include "wx/vector.h"
 
 #include <sys/time.h>
 #include <signal.h>
@@ -53,7 +54,7 @@ static inline wxString wxUsecClockAsString(wxUsecClock_t usec)
     #if wxUSE_LONGLONG
         return usec.ToString();
     #else // wxUsecClock_t == double
-        return wxString::Format(_T("%.0f"), usec);
+        return wxString::Format(wxT("%.0f"), usec);
     #endif
 }
 
@@ -85,7 +86,7 @@ void wxTimerScheduler::DoAddTimer(wxTimerSchedule *s)
     for ( node = m_timers.begin(); node != m_timers.end(); ++node )
     {
         wxASSERT_MSG( (*node)->m_timer != s->m_timer,
-                      _T("adding the same timer twice?") );
+                      wxT("adding the same timer twice?") );
 
         if ( (*node)->m_expiration > s->m_expiration )
             break;
@@ -114,7 +115,7 @@ void wxTimerScheduler::RemoveTimer(wxUnixTimerImpl *timer)
         }
     }
 
-    wxFAIL_MSG( _T("removing inexistent timer?") );
+    wxFAIL_MSG( wxT("removing inexistent timer?") );
 }
 
 bool wxTimerScheduler::GetNext(wxUsecClock_t *remaining) const
@@ -122,7 +123,7 @@ bool wxTimerScheduler::GetNext(wxUsecClock_t *remaining) const
     if ( m_timers.empty() )
       return false;
 
-    wxCHECK_MSG( remaining, false, _T("NULL pointer") );
+    wxCHECK_MSG( remaining, false, wxT("NULL pointer") );
 
     *remaining = (*m_timers.begin())->m_expiration - wxGetLocalTimeUsec();
     if ( *remaining < 0 )
@@ -134,16 +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 )
@@ -172,13 +174,33 @@ void wxTimerScheduler::NotifyExpired()
         }
         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;
 }
 
 // ============================================================================
@@ -219,7 +241,7 @@ bool wxUnixTimerImpl::IsRunning() const
 
 wxUnixTimerImpl::~wxUnixTimerImpl()
 {
-    wxASSERT_MSG( !m_isRunning, _T("must have been stopped before") );
+    wxASSERT_MSG( !m_isRunning, wxT("must have been stopped before") );
 }
 
 // ============================================================================