X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/655719367ac5e131d9642e5783f3ecf64d1a3385..137c8bde085d6d5b7c459902d2ea1a198ab48765:/src/generic/timer.cpp diff --git a/src/generic/timer.cpp b/src/generic/timer.cpp index 495ca2111c..92b513ef35 100644 --- a/src/generic/timer.cpp +++ b/src/generic/timer.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: mgl/timer.cpp +// Name: src/generic/timer.cpp // Purpose: wxTimer implementation // Author: Vaclav Slavik // Id: $Id$ @@ -7,10 +7,6 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) -#pragma implementation "timer.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -19,16 +15,19 @@ #endif // ---------------------------------------------------------------------------- -// NB: when using generic wxTimer implementation in your port, you *must* call -// wxTimer::NotifyTimers() often enough. The ideal place for this +// NB: when using generic wxTimer implementation in your port, you *must* call +// wxTimer::NotifyTimers() often enough. The ideal place for this // is in wxEventLoop::Dispatch(). // ---------------------------------------------------------------------------- +#if wxUSE_TIMER + #include "wx/timer.h" -#if wxUSE_TIMER +#ifndef WX_PRECOMP + #include "wx/log.h" +#endif -#include "wx/log.h" #include "wx/module.h" // ---------------------------------------------------------------------------- @@ -47,6 +46,28 @@ #define wxTimerTickFmtSpec _T("lu") #define wxTimerTickPrintfArg(tt) (tt) + + #ifdef __DOS__ + // Under DOS the MGL timer has a 24hr period, so consider the 12 hours + // before y to be 'less' and the the 12 hours after 'greater' modulo + // 24 hours. + inline bool wxTickGreaterEqual(wxTimerTick_t x, wxTimerTick_t y) + { + // _EVT_getTicks wraps at 1573040 * 55 + const wxTimerTick_t modulus = 1573040 * 55; + return (2 * modulus + x - y) % modulus < modulus / 2; + } + #else + // If wxTimerTick_t is 32-bits then it'll wrap in around 50 days. So + // let the 25 days before y be 'less' and 25 days after be 'greater'. + inline bool wxTickGreaterEqual(wxTimerTick_t x, wxTimerTick_t y) + { + // This code assumes wxTimerTick_t is an unsigned type. + // Set half_modulus with top bit set and the rest zeros. + const wxTimerTick_t half_modulus = ~((~(wxTimerTick_t)0) >> 1); + return x - y < half_modulus; + } + #endif #else // !__WXMGL__ #define GetMillisecondsTime wxGetLocalTimeMillis @@ -59,6 +80,11 @@ #define wxTimerTickFmtSpec _T("s") #define wxTimerTickPrintfArg(tt) (tt.ToString().c_str()) #endif // wx/native long long + + inline bool wxTickGreaterEqual(wxTimerTick_t x, wxTimerTick_t y) + { + return x >= y; + } #endif // __WXMGL__/!__WXMGL__ // ---------------------------------------------------------------------------- @@ -68,14 +94,14 @@ class wxTimerDesc { public: - wxTimerDesc(wxTimer *t) : - timer(t), running(FALSE), next(NULL), prev(NULL), + wxTimerDesc(wxTimer *t) : + timer(t), running(false), next(NULL), prev(NULL), shotTime(0), deleteFlag(NULL) {} wxTimer *timer; bool running; wxTimerDesc *next, *prev; - wxTimerTick_t shotTime; + wxTimerTick_t shotTime; volatile bool *deleteFlag; // see comment in ~wxTimer }; @@ -87,7 +113,7 @@ public: void QueueTimer(wxTimerDesc *desc, wxTimerTick_t when = 0); void RemoveTimer(wxTimerDesc *desc); void NotifyTimers(); - + private: wxTimerDesc *m_timers; }; @@ -96,14 +122,14 @@ void wxTimerScheduler::QueueTimer(wxTimerDesc *desc, wxTimerTick_t when) { if ( desc->running ) return; // already scheduled - + if ( when == 0 ) when = GetMillisecondsTime() + desc->timer->GetInterval(); desc->shotTime = when; - desc->running = TRUE; + desc->running = true; wxLogTrace( wxT("timer"), - wxT("queued timer %p at tick %") wxTimerTickFmtSpec, + wxT("queued timer %p at tick %") wxTimerTickFmtSpec, desc->timer, wxTimerTickPrintfArg(when)); if ( m_timers ) @@ -125,7 +151,7 @@ void wxTimerScheduler::QueueTimer(wxTimerDesc *desc, wxTimerTick_t when) void wxTimerScheduler::RemoveTimer(wxTimerDesc *desc) { - desc->running = FALSE; + desc->running = false; if ( desc == m_timers ) m_timers = desc->next; if ( desc->prev ) @@ -142,29 +168,36 @@ void wxTimerScheduler::NotifyTimers() bool oneShot; volatile bool timerDeleted; wxTimerTick_t now = GetMillisecondsTime(); - wxTimerDesc *desc; - while ( m_timers && m_timers->shotTime <= now ) + for ( wxTimerDesc *desc = m_timers; desc; desc = desc->next ) { - desc = m_timers; - oneShot = desc->timer->IsOneShot(); - RemoveTimer(desc); - - timerDeleted = FALSE; - desc->deleteFlag = &timerDeleted; - desc->timer->Notify(); - - if ( !timerDeleted ) + if ( desc->running && wxTickGreaterEqual(now, desc->shotTime) ) { - wxLogTrace( wxT("timer"), - wxT("notified timer %p sheduled for %") - wxTimerTickFmtSpec, - desc->timer, - wxTimerTickPrintfArg(desc->shotTime) ); - - desc->deleteFlag = NULL; - if ( !oneShot ) - QueueTimer(desc, now + desc->timer->GetInterval()); + oneShot = desc->timer->IsOneShot(); + RemoveTimer(desc); + + timerDeleted = false; + desc->deleteFlag = &timerDeleted; + desc->timer->Notify(); + + if ( !timerDeleted ) + { + wxLogTrace( wxT("timer"), + wxT("notified timer %p sheduled for %") + wxTimerTickFmtSpec, + desc->timer, + wxTimerTickPrintfArg(desc->shotTime) ); + + desc->deleteFlag = NULL; + if ( !oneShot ) + QueueTimer(desc, now + desc->timer->GetInterval()); + } + else + { + desc = m_timers; + if (!desc) + break; + } } } } @@ -193,11 +226,11 @@ wxTimer::~wxTimer() Stop(); // NB: this is a hack: wxTimerScheduler must have some way of knowing - // that wxTimer object was deleted under its hands -- this may + // that wxTimer object was deleted under its hands -- this may // happen if somebody is really nasty and deletes the timer // from wxTimer::Notify() if ( m_desc->deleteFlag != NULL ) - *m_desc->deleteFlag = TRUE; + *m_desc->deleteFlag = true; delete m_desc; wxLogTrace( wxT("timer"), wxT(" ...done destroying timer %p..."), this); @@ -210,20 +243,20 @@ bool wxTimer::IsRunning() const bool wxTimer::Start(int millisecs, bool oneShot) { - wxLogTrace( wxT("timer"), wxT("started timer %p: %i ms, oneshot=%i"), + wxLogTrace( wxT("timer"), wxT("started timer %p: %i ms, oneshot=%i"), this, millisecs, oneShot); if ( !wxTimerBase::Start(millisecs, oneShot) ) - return FALSE; - + return false; + gs_scheduler->QueueTimer(m_desc); - return TRUE; + return true; } void wxTimer::Stop() { if ( !m_desc->running ) return; - + gs_scheduler->RemoveTimer(m_desc); } @@ -241,7 +274,7 @@ class wxTimerModule: public wxModule DECLARE_DYNAMIC_CLASS(wxTimerModule) public: wxTimerModule() {} - bool OnInit() { return TRUE; } + bool OnInit() { return true; } void OnExit() { delete gs_scheduler; gs_scheduler = NULL; } };