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NULL: Ensure that the timer callback is called regularly

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This commit is contained in:
Cameron Cawley 2020-05-25 14:05:54 +01:00 committed by Eugene Sandulenko
parent 068b3371bd
commit 30c00656e1
3 changed files with 24 additions and 3 deletions
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8
backends/platform/null/null.cpp
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@ -116,14 +116,16 @@ void OSystem_NULL::initBackend() {
((Audio::MixerImpl *)_mixer)->setReady(false);
// Note that both the mixer and the timer manager are useless
// this way; they need to be hooked into the system somehow to
// be functional. Of course, can't do that in a NULL backend :).
// Note that the mixer is useless this way; it needs to be hooked
// into the system somehow to be functional. Of course, can't do
// that in a NULL backend :).
ModularBackend::initBackend();
}
bool OSystem_NULL::pollEvent(Common::Event &event) {
((DefaultTimerManager *)getTimerManager())->checkTimers();
return false;
}

11
backends/timer/default/default-timer.cpp
View File

@ -62,6 +62,7 @@ void insertPrioQueue(TimerSlot *head, TimerSlot *newSlot) {
DefaultTimerManager::DefaultTimerManager() :
_timerCallbackNext(0),
_head(0) {
_head = new TimerSlot();
@ -114,6 +115,16 @@ void DefaultTimerManager::handler() {
}
}
void DefaultTimerManager::checkTimers(uint32 interval) {
uint32 curTime = g_system->getMillis();
// Timer checking & firing
if (curTime >= _timerCallbackNext) {
handler();
_timerCallbackNext = curTime + interval;
}
}
bool DefaultTimerManager::installTimerProc(TimerProc callback, int32 interval, void *refCon, const Common::String &id) {
assert(interval > 0);
Common::StackLock lock(_mutex);

8
backends/timer/default/default-timer.h
View File

@ -38,6 +38,8 @@ private:
TimerSlot *_head;
TimerSlotMap _callbacks;
uint32 _timerCallbackNext;
public:
DefaultTimerManager();
virtual ~DefaultTimerManager();
@ -48,6 +50,12 @@ public:
* Timer callback, to be invoked at regular time intervals by the backend.
*/
void handler();
/*
* Ensure that the callback is called at regular time intervals.
* Should be called from pollEvents() on backends without threads.
*/
void checkTimers(uint32 interval = 10);
};
#endif