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Real timer implementation
This commit is contained in:
atotic
parent
5d5ac9e0d3
commit
b45753dc43
@ -16,138 +16,254 @@
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* Reserved.
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*/
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/* Mac implementation of the timer interface */
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//
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// Mac implementation of the nsITimer interface
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//
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// nsMacTimerPeriodical idles,
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#include "nsITimer.h"
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#include "nsITimerCallback.h"
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#include "nsCRT.h"
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#include "prlog.h"
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#include <stdio.h>
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#include <LPeriodical.h>
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#include <LArray.h>
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#include <LArrayIterator.h>
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#include <LComparator.h>
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static NS_DEFINE_IID(kITimerIID, NS_ITIMER_IID);
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#pragma mark class TimerImpl
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//
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// TimerImpl implements nsITimer API
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//
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class TimerImpl : public nsITimer
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{
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private:
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nsTimerCallbackFunc mCallbackFunc;
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nsITimerCallback * mCallbackObject;
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void * mClosure;
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PRUint32 mDelay;
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UInt32 mFireTime; // Timer should fire when TickCount >= this number
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public:
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#if 0
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/*
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* Implementation of timers using Xt timer facility
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*/
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class TimerImpl : public nsITimer {
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public:
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// constructors
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public:
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TimerImpl();
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virtual ~TimerImpl();
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TimerImpl();
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virtual nsresult Init(nsTimerCallbackFunc aFunc,
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void *aClosure,
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// PRBool aRepeat,
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PRUint32 aDelay);
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virtual ~TimerImpl();
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virtual nsresult Init(nsITimerCallback *aCallback,
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// PRBool aRepeat,
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PRUint32 aDelay);
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NS_DECL_ISUPPORTS
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NS_DECL_ISUPPORTS
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UInt32 GetFireTime() { return mFireTime; }
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virtual void Cancel();
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virtual PRUint32 GetDelay() { return mDelay; }
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virtual void SetDelay(PRUint32 aDelay) { mDelay=aDelay; };
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void Fire();
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void FireTimeout();
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// nsITimer overrides
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private:
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nsresult Init(PRUint32 aDelay);
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virtual nsresult Init(nsTimerCallbackFunc aFunc,
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void *aClosure,
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PRUint32 aDelay);
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PRUint32 mDelay;
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nsTimerCallbackFunc mFunc;
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void *mClosure;
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nsITimerCallback *mCallback;
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// PRBool mRepeat;
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TimerImpl *mNext;
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XtIntervalId mTimerId;
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virtual nsresult Init(nsITimerCallback *aCallback,
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PRUint32 aDelay);
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virtual void Cancel();
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virtual PRUint32 GetDelay();
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virtual void SetDelay(PRUint32 aDelay);
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private:
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// Calculates mFireTime too
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void SetDelaySelf( PRUint32 aDelay );
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};
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void TimerImpl::FireTimeout()
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#pragma mark class TimerPeriodical
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//
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// TimerPeriodical is a singleton LPeriodical subclass that fires
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// off TimerImpl. The firing is done on idle
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//
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class TimerPeriodical : public LPeriodical
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{
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if (mFunc != NULL) {
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(*mFunc)(this, mClosure);
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}
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else if (mCallback != NULL) {
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mCallback->Notify(this); // Fire the timer
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}
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static TimerPeriodical * sPeriodical;
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LArray * mTimers; // List of TimerImpl *
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public:
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// Returns the singleton instance
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static TimerPeriodical * GetPeriodical();
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// Always repeating here
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TimerPeriodical();
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// if (mRepeat)
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// mTimerId = XtAppAddTimeOut(gAppContext, GetDelay(),(XtTimerCallbackProc)nsTimerExpired, this);
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}
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virtual ~TimerPeriodical();
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nsresult AddTimer( TimerImpl * aTimer);
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nsresult RemoveTimer( TimerImpl * aTimer);
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virtual void SpendTime( const EventRecord &inMacEvent);
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};
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#pragma mark class TimerImplComparator
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//
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// TimerImplComparator compares two TimerImpl
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//
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class TimerImplComparator : public LComparator
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{
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virtual Int32 Compare(
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const void* inItemOne,
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const void* inItemTwo,
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Uint32 inSizeOne,
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Uint32 inSizeTwo) const;
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};
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//
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// TimerImpl implementation
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//
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static NS_DEFINE_IID(kITimerIID, NS_ITIMER_IID);
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NS_IMPL_ISUPPORTS(TimerImpl, kITimerIID)
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TimerImpl::TimerImpl()
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{
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NS_INIT_REFCNT();
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mFunc = NULL;
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mCallback = NULL;
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mNext = NULL;
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mTimerId = 0;
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mDelay = 0;
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NS_INIT_REFCNT();
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mCallbackFunc = NULL;
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mCallbackObject = NULL;
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mClosure = NULL;
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mDelay = 0;
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mFireTime = 0;
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}
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TimerImpl::~TimerImpl()
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nsresult TimerImpl::Init(nsTimerCallbackFunc aFunc,
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void *aClosure,
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PRUint32 aDelay)
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{
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mCallbackFunc = aFunc;
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mClosure = aClosure;
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SetDelaySelf(aDelay);
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return TimerPeriodical::GetPeriodical()->AddTimer(this);
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}
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nsresult
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TimerImpl::Init(nsTimerCallbackFunc aFunc,
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void *aClosure,
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// PRBool aRepeat,
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PRUint32 aDelay)
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nsresult TimerImpl::Init(nsITimerCallback *aCallback,
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PRUint32 aDelay)
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{
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mFunc = aFunc;
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mClosure = aClosure;
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// mRepeat = aRepeat;
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mTimerId = XtAppAddTimeOut(gAppContext, aDelay,(XtTimerCallbackProc)nsTimerExpired, this);
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return Init(aDelay);
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mCallbackObject = aCallback;
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SetDelaySelf(aDelay);
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return TimerPeriodical::GetPeriodical()->AddTimer(this);
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}
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nsresult
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TimerImpl::Init(nsITimerCallback *aCallback,
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// PRBool aRepeat,
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PRUint32 aDelay)
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void TimerImpl::Cancel()
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{
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mCallback = aCallback;
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// mRepeat = aRepeat;
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mTimerId = XtAppAddTimeOut(gAppContext, aDelay, (XtTimerCallbackProc)nsTimerExpired, this);
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return Init(aDelay);
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TimerPeriodical::GetPeriodical()->RemoveTimer(this);
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}
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nsresult
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TimerImpl::Init(PRUint32 aDelay)
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PRUint32 TimerImpl::GetDelay()
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{
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mDelay = aDelay;
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NS_ADDREF(this);
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return NS_OK;
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return mDelay;
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}
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NS_IMPL_ISUPPORTS(TimerImpl, kITimerIID)
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void
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TimerImpl::Cancel()
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void TimerImpl::SetDelay(PRUint32 aDelay)
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{
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XtRemoveTimeOut(mTimerId);
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SetDelaySelf(aDelay);
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// Make sure that timer was sorted
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NS_ADDREF(this);
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TimerPeriodical::GetPeriodical()->RemoveTimer(this);
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TimerPeriodical::GetPeriodical()->AddTimer(this);
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NS_RELEASE(this);
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}
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void TimerImpl::SetDelaySelf( PRUint32 aDelay )
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{
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mDelay = aDelay;
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mFireTime = TickCount() + mDelay / 100 * 6; // We need mFireTime in ticks, 1/60th of a second
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}
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TimerPeriodical * TimerPeriodical::sPeriodical = NULL;
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TimerPeriodical * TimerPeriodical::GetPeriodical()
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{
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if (sPeriodical == NULL)
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sPeriodical = new TimerPeriodical();
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return sPeriodical;
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}
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TimerPeriodical::TimerPeriodical()
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{
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mTimers = new LArray( sizeof(TimerImpl*));
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mTimers->SetComparator( new TimerImplComparator());
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mTimers->SetKeepSorted( true );
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}
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TimerPeriodical::~TimerPeriodical()
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{
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PR_ASSERT(mTimers->GetCount() == 0);
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delete mTimers;
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}
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nsresult TimerPeriodical::AddTimer( TimerImpl * aTimer)
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{
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try
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{
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NS_ADDREF(aTimer);
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mTimers->AddItem( aTimer );
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StartRepeating();
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}
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catch(...)
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{
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return NS_ERROR_UNEXPECTED;
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}
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return NS_OK;
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}
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nsresult TimerPeriodical::RemoveTimer( TimerImpl * aTimer)
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{
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mTimers->Remove( aTimer );
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NS_RELEASE( aTimer );
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if ( mTimers->GetCount() == 0 )
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StopRepeating();
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return NS_OK;
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}
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// Called through every event loop
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// Loops through the list of available timers, and
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// fires off the available ones
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void TimerPeriodical::SpendTime( const EventRecord &inMacEvent)
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{
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LArrayIterator iter( *mTimers, LArrayIterator::from_Start);
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TimerImpl * timer;
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while (iter.Next( &timer))
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{
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if ( timer->GetFireTime() <= inMacEvent.when )
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{
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NS_ADDREF(timer);
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RemoveTimer(timer);
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timer->Fire();
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NS_RELEASE(timer);
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}
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else
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break; // Items are sorted, so we do not need to iterate until the end
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}
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}
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//
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// class TimerImplComparator implementation
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//
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Int32 TimerImplComparator::Compare(
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const void* inItemOne,
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const void* inItemTwo,
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Uint32 inSizeOne,
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Uint32 inSizeTwo) const
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{
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return (( TimerImpl *) inItemOne)->GetFireTime() - (( TimerImpl *) inItemTwo)->GetFireTime();
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}
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NS_BASE nsresult NS_NewTimer(nsITimer** aInstancePtrResult)
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{
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NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
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if (nsnull == aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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TimerImpl *timer = new TimerImpl();
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if (nsnull == timer) {
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return NS_ERROR_OUT_OF_MEMORY;
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@ -155,16 +271,3 @@ NS_BASE nsresult NS_NewTimer(nsITimer** aInstancePtrResult)
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return timer->QueryInterface(kITimerIID, (void **) aInstancePtrResult);
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}
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void nsTimerExpired(XtPointer aCallData)
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{
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TimerImpl* timer = (TimerImpl *)aCallData;
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timer->FireTimeout();
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}
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#else
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NS_BASE nsresult NS_NewTimer(nsITimer** aInstancePtrResult)
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{
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PR_ASSERT(FALSE);
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}
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#endif
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