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// Copyright (c) 1994-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// e32\kernel\stimer.cpp
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// Note that timer handles are always thread relative
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//
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//
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#include <kernel/kern_priv.h>
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#include "execs.h"
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_LIT(KTimerThreadName,"TimerThread");
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_LIT(KLitTimerMutex,"TimerMutex");
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DMutex* TTickQ::Mutex;
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const TInt KTimerThreadPriority=27;
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const TInt KDaysFrom0ADTo2000AD=730497; // See US_TIME.CPP to verify this
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const TInt KSecondsPerDay=86400;
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const TInt KMaxSkippedTicks=65536;
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const TInt KMsDeltaLimit=2000000;
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#define __CHECK_LAST_DELTA if (TUint32(iLastDelta)>TUint32(KMaxSkippedTicks)) {NKern::Lock(); *(TInt*)0xfeedface=iLastDelta;}
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/** Gets the address of the tick timer DFC queue.
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@return The tick timer DFC queue.
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*/
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EXPORT_C TDfcQue* Kern::TimerDfcQ()
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{
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return K::TimerDfcQ;
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}
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TInt K::StartTickQueue()
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{
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TInt r=Kern::MutexCreate(TTickQ::Mutex, KLitTimerMutex, KMutexOrdTimer);
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if (r!=KErrNone)
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return r;
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r=Kern::DfcQCreate(K::TimerDfcQ,KTimerThreadPriority,&KTimerThreadName);
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if (r!=KErrNone)
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return r;
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DThread* pT = _LOFF(K::TimerDfcQ->iThread, DThread, iNThread);
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pT->iFlags |= KThreadFlagSystemPermanent;
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K::SecondQ=new TSecondQ;
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if (!K::SecondQ)
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return KErrNoMemory;
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K::InactivityQ=new TInactivityQ;
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if (!K::InactivityQ)
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return KErrNoMemory;
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r=TTickQ::Init();
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if (r!=KErrNone)
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return r;
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return KErrNone;
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}
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void AbortTimers(TBool aAbortAbsolute)
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{
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DObjectCon& timers=*K::Containers[ETimer];
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DObjectCon& threads=*K::Containers[EThread];
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timers.Wait();
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TInt c=timers.Count();
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TInt i;
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for (i=0; i<c; i++)
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{
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DTimer* pT=(DTimer*)timers[i];
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pT->Abort(aAbortAbsolute);
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}
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timers.Signal();
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threads.Wait();
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c=threads.Count();
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for (i=0; i<c; i++)
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{
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DThread* pT=(DThread*)threads[i];
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pT->AbortTimer(aAbortAbsolute);
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}
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threads.Signal();
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}
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/********************************************
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* Tick-based relative timer queue
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********************************************/
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void msCallBack(TAny* aPtr)
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{
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// __KTRACE_OPT(KTIMING,Kern::Printf("!"));
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TTickQ& q=*(TTickQ*)aPtr;
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q.iTickDfc.Add();
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}
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void tickDfc(TAny* aPtr)
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{
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TTickQ& q=*(TTickQ*)aPtr;
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__ASSERT_DEBUG(q.iMsTimer.i_NTimer_iState==NTimer::EIdle, *(TInt*)0xdfc01bad=0);
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__ASSERT_DEBUG(!q.iTickDfc.Queued(), *(TInt*)0xdfc02bad=0);
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__ASSERT_DEBUG(NTickCount()-q.iMsTimer.iTriggerTime<0x80000000u, *(TInt*)0xdfc03bad=0);
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q.Tick();
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}
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TTickQ::TTickQ()
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: iLastDelta(0), iLastTicks(0), iRtc(0), iInTick(0),
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iRounding(0),
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iPrevRounding(0),
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iLastMs(0),
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iTickDfc(tickDfc,this,1),
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iMsTimer(msCallBack,this)
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{
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// Careful with the constants here or GCC will get it wrong
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K::Year2000InSeconds=Int64(KDaysFrom0ADTo2000AD)*Int64(KSecondsPerDay);
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}
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#ifdef _DEBUG
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void TTickQ::Check()
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{
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__ASSERT_DEBUG(iMsTimer.i_NTimer_iState==NTimer::EIdle, *(TInt*)0xdfc03bad=0);
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__ASSERT_DEBUG(!iTickDfc.Queued(), *(TInt*)0xdfc04bad=0);
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}
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#endif
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TInt TTickQ::Init()
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{
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TTickQ* pQ=new TTickQ;
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if (!pQ)
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return KErrNoMemory;
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K::TickQ=pQ;
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pQ->iTickDfc.SetDfcQ(K::TimerDfcQ);
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pQ->iMsTickPeriod=NTickPeriod();
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_LOFF(K::TimerDfcQ->iThread,DThread,iNThread)->iDebugMask=0x80000000;
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// These lines are tick-period dependent
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// Assume we can always set the tick period to 64Hz
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pQ->iTickPeriod=15625;
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pQ->iNominalTickPeriod=15625;
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pQ->iTicksPerSecond=64;
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K::SecondQ->iTicksPerDay=86400*64;
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TInt s2000=P::InitSystemTime();
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__KTRACE_OPT(KBOOT,Kern::Printf("s2000=%d",s2000));
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pQ->iMsTimer.iTriggerTime=NTickCount();
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pQ->iLastMs=pQ->iMsTimer.iTriggerTime;
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TUint temp = 0;
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K::SetSystemTime(s2000,0,temp,ETimeSetTime|ETimeSetAllowTimeReversal);
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// Int64 now=s2000;
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// now*=1000000;
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// now+=K::Year2000;
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// now/=pQ->iNominalTickPeriod;
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// pQ->iRtc=now;
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// TInt seconds=s2000%86400;
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// __KTRACE_OPT(KBOOT,Kern::Printf("seconds=%d",seconds));
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// now+=(86400-seconds)*pQ->iTicksPerSecond;
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// K::SecondQ->iMidnight=now;
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pQ->iMsTimer.i_NTimer_iUserFlags = ETrue; // used as start flag
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TTickQ::Wait();
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K::SecondQ->Tick(); // start the second queue
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K::TickQ->Tick(); // start the tick queue
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TTickQ::Signal();
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return KErrNone;
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}
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void TTickQ::Wait()
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{
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if (Mutex)
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Kern::MutexWait(*Mutex);
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}
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void TTickQ::Signal()
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{
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if (Mutex)
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Kern::MutexSignal(*Mutex);
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}
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void TTickQ::Tick()
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{
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Wait();
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__KTRACE_OPT(KTIMING,Kern::Printf("Tick!: l%d e%d",iLastDelta,IsEmpty()));
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// Make sure this DFC hasn't been queued again - this can happen if someone calls Add()
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// between this DFC being dispatched and executing the Wait() above; priority inheritance
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// can make this happen more often than you might expect.
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if (iTickDfc.Queued())
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iTickDfc.Cancel();
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if (K::SecondQ->iWakeUpDfc.Queued())
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{
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Signal();
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return;
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}
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iInTick=ETrue;
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Update();
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if (!IsEmpty() && CountDown(iLastDelta)) // Anything ready to be completed ?
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{
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__KTRACE_OPT(KTIMING,Kern::Printf("Tick!: f%d",FirstDelta()));
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TTickLink* pT;
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while (!IsEmpty() && (pT=(TTickLink*)RemoveFirst())!=NULL)
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{
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pT->iNext=NULL; // In case Complete() calls TTickLink::Cancel()
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(*pT->iCallBack)(pT->iPtr); // Dispatch the timer completion
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#ifdef _DEBUG
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Check();
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#endif
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if (pT->iNext==NULL && pT->iPeriod!=0) // Periodic timer
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Add(pT,pT->iPeriod);
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#ifdef _DEBUG
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Check();
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#endif
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}
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}
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StartTimer();
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iInTick=EFalse;
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Signal();
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}
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void TTickQ::Update()
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{
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TInt irq = __SPIN_LOCK_IRQSAVE(TheTimerQ.iTimerSpinLock);
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iLastMs=iMsTimer.iTriggerTime;
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iLastTicks+=iLastDelta;
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iRtc+=iLastDelta;
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__SPIN_UNLOCK_IRQRESTORE(TheTimerQ.iTimerSpinLock,irq);
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iPrevRounding=iRounding;
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}
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void TTickQ::StartTimer()
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{
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TInt delta=KMaxTInt;
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if (!IsEmpty())
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delta=FirstDelta();
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if (delta>KMaxSkippedTicks) // so that microseconds don't overflow
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delta=KMaxSkippedTicks;
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TInt delta_us=delta*iTickPeriod; // number of microseconds to next timer expiry
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__KTRACE_OPT(KTIMING,Kern::Printf("Tick:delta_us=%d, prdg=%d",delta_us,iPrevRounding));
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delta_us-=iPrevRounding; // subtract rounding error on last completed ms timer
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TInt msp=iMsTickPeriod;
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TInt delta_ms=(delta_us+(msp>>1))/msp; // round to milliseconds
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iRounding=msp*delta_ms-delta_us; // save rounding error on this timer
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iLastDelta=delta; // save number of ticks
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__CHECK_LAST_DELTA;
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__ASSERT_DEBUG(!iTickDfc.Queued(), *(TInt*)0xdfc00bad=0);
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TInt r=KErrNone;
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if (iMsTimer.i_NTimer_iUserFlags)
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{
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iMsTimer.i_NTimer_iUserFlags = EFalse;
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iMsTimer.OneShot(delta_ms); // start timer for the first time
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}
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else
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r=iMsTimer.Again(delta_ms); // start timer
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__KTRACE_OPT(KTIMING,Kern::Printf("Tick:delta=%d, r=%d, lastdelta=%d, rdg=%d",delta_ms,r,iLastDelta,iRounding));
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if (r!=KErrNone)
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{
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__ASSERT_ALWAYS(r==KErrArgument, *(TInt*)0xbad0beef=r);
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// requested time has already passed so manually requeue the DFC
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iMsTimer.iTriggerTime+=delta_ms;
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iTickDfc.Enque();
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}
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}
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// Wait on mutex before calling this
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void TTickQ::Add(TTickLink* aLink, TInt aPeriod)
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{
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__KTRACE_OPT(KTIMING,Kern::Printf("Tick:Add p%d i%d ld%d",aPeriod, iInTick, iLastDelta));
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SDeltaQue::Add(aLink,aPeriod);
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if (!iInTick && aPeriod<iLastDelta)
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{
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// need to reset millisecond timer
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if (iMsTimer.Cancel())
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{
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// the timer was actually cancelled - so it hadn't expired
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iMsTimer.iTriggerTime=iLastMs;
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StartTimer();
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}
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}
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}
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void TTickQ::Synchronise()
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//
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// Update everything as if a tick had just occurred
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// Call with system unlocked and timer mutex held
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//
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{
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TInt ms_delta=(TInt)(NTickCount()-iLastMs-1);
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__ASSERT_ALWAYS(ms_delta<KMsDeltaLimit,K::Fault(K::ESynchroniseMsDeltaTooBig));
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TInt msp=iMsTickPeriod;
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TInt us_delta=ms_delta*msp+iPrevRounding;
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TInt tick_delta=us_delta/iTickPeriod;
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if (tick_delta>iLastDelta)
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tick_delta=iLastDelta;
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us_delta=tick_delta*iTickPeriod-iPrevRounding;
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ms_delta=(us_delta+(msp>>1))/msp;
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iPrevRounding=msp*ms_delta-us_delta;
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iLastDelta-=tick_delta;
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TInt irq = __SPIN_LOCK_IRQSAVE(TheTimerQ.iTimerSpinLock);
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iRtc+=tick_delta;
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iLastTicks+=tick_delta;
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iLastMs+=ms_delta;
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__SPIN_UNLOCK_IRQRESTORE(TheTimerQ.iTimerSpinLock,irq);
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__CHECK_LAST_DELTA;
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if (!IsEmpty())
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{
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CountDown(tick_delta);
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__ASSERT_ALWAYS(FirstDelta()>=0, *(TInt*)0xfacefeed=FirstDelta());
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}
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}
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/**
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Rounds up microseconds into the number of Kernel Ticks(1/64Hz).
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@param a if >=0, the number of microseconds;
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if < 0, ABS(a) is the number of Kernel Ticks.
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@par aAdjust if true, the elapsed time from the last Kernel Tick is also taken into account.
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*/
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TInt MicroSecondsToTicks(TInt a, TBool aAdjust)
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{
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TUint32 p=K::TickQ->iTickPeriod;
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if (a<0)
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{
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TUint32 b=(TUint32)(-a);
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if (aAdjust)
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b+=((NTickCount()-K::TickQ->iLastMs-1)* K::TickQ->iMsTickPeriod + p - 1)/p;
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if (b>(TUint32)KMaxTInt) b=KMaxTInt;
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return b;
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}
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if (a==0)
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a=1;
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TUint32 b=(TUint32)a;
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if (aAdjust)
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b += (TInt)(NTickCount()-K::TickQ->iLastMs-1)*K::TickQ->iMsTickPeriod;
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return (TInt)((b+p-1)/p);
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}
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/**
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Constructor for a tick timer.
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@pre Calling thread must be in a critical section.
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@pre Call in a thread context.
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@pre Kernel must be unlocked
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@pre interrupts enabled
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*/
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EXPORT_C TTickLink::TTickLink()
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{
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CHECK_PRECONDITIONS(MASK_KERNEL_UNLOCKED|MASK_INTERRUPTS_ENABLED|MASK_NOT_ISR|MASK_NOT_IDFC|MASK_CRITICAL,"TTickLink::TTickLink");
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iNext=NULL;
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iLastLock=-1;
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}
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/** @internalComponent */
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void TTickLink::DoCancel()
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{
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iPeriod=0;
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if (iNext)
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{
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K::TickQ->Remove(this);
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iNext=NULL;
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}
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}
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/**
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Adds this periodic tick timer to the tick timer queue.
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On expiry, the timer is put back onto the tick timer queue.
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@param aPeriod The timer interval in microseconds.
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@param aCallBack The callback function that is called every time
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this periodic timer expires.
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@param aPtr An argument that is passed to the callback function.
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@pre Calling thread must be in a critical section.
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@pre No fast mutex can be held.
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@pre Call in a thread context.
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@pre Kernel must be unlocked
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@pre interrupts enabled
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*/
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EXPORT_C void TTickLink::Periodic(TInt aPeriod, TTickCallBack aCallBack, TAny* aPtr)
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{
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CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"TTickLink::Periodic");
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TTickQ::Wait();
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DoCancel();
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|
397 |
iPeriod=MicroSecondsToTicks(aPeriod, EFalse);
|
|
398 |
iCallBack=aCallBack;
|
|
399 |
iPtr=aPtr;
|
|
400 |
K::TickQ->Add(this,MicroSecondsToTicks(aPeriod, ETrue));
|
|
401 |
TTickQ::Signal();
|
|
402 |
}
|
|
403 |
|
|
404 |
|
|
405 |
|
|
406 |
|
|
407 |
/**
|
|
408 |
Adds this one-off tick timer to the tick timer queue.
|
|
409 |
|
|
410 |
@param aTime The timer interval in microseconds.
|
|
411 |
@param aCallBack The callback function that is called when this timer expires.
|
|
412 |
@param aPtr An argument that is passed to the callback function.
|
|
413 |
|
|
414 |
@pre Calling thread must be in a critical section.
|
|
415 |
@pre No fast mutex can be held.
|
|
416 |
@pre Call in a thread context.
|
|
417 |
@pre Kernel must be unlocked
|
|
418 |
@pre interrupts enabled
|
|
419 |
*/
|
|
420 |
EXPORT_C void TTickLink::OneShot(TInt aTime, TTickCallBack aCallBack, TAny* aPtr)
|
|
421 |
{
|
|
422 |
CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"TTickLink::OneShot");
|
|
423 |
TTickQ::Wait();
|
|
424 |
DoCancel();
|
|
425 |
iCallBack=aCallBack;
|
|
426 |
iPtr=aPtr;
|
|
427 |
K::TickQ->Add(this,MicroSecondsToTicks(aTime, ETrue));
|
|
428 |
TTickQ::Signal();
|
|
429 |
}
|
|
430 |
|
|
431 |
|
|
432 |
|
|
433 |
|
|
434 |
/**
|
|
435 |
Cancels this tick timer.
|
|
436 |
|
|
437 |
This timer object is removed from the tick timer queue.
|
|
438 |
|
|
439 |
@pre Calling thread must be in a critical section.
|
|
440 |
@pre No fast mutex can be held.
|
|
441 |
@pre Call in a thread context.
|
|
442 |
@pre Kernel must be unlocked
|
|
443 |
@pre interrupts enabled
|
|
444 |
*/
|
|
445 |
EXPORT_C void TTickLink::Cancel()
|
|
446 |
{
|
|
447 |
CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"TTickLink::Cancel");
|
|
448 |
TTickQ::Wait();
|
|
449 |
DoCancel();
|
|
450 |
TTickQ::Signal();
|
|
451 |
}
|
|
452 |
|
|
453 |
|
|
454 |
|
|
455 |
|
|
456 |
/**
|
|
457 |
Adds this tick timer to the tick timer queue.
|
|
458 |
|
|
459 |
@param aTicks The timer interval in ticks. This is expected to be
|
|
460 |
the tick count for the next lock.
|
|
461 |
@param aCallBack The callback function that is called when this timer expires.
|
|
462 |
@param aPtr An argument that is passed to the callback function.
|
|
463 |
|
|
464 |
@pre Calling thread must be in a critical section.
|
|
465 |
@pre No fast mutex can be held.
|
|
466 |
@pre Call in a thread context.
|
|
467 |
@pre Kernel must be unlocked
|
|
468 |
@pre interrupts enabled
|
|
469 |
*/
|
|
470 |
EXPORT_C void TTickLink::Lock(TInt aTicks, TTickCallBack aCallBack, TAny* aPtr)
|
|
471 |
{
|
|
472 |
CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"TTickLink::Lock");
|
|
473 |
TTickQ::Wait();
|
|
474 |
DoCancel();
|
|
475 |
iCallBack=aCallBack;
|
|
476 |
iPtr=aPtr;
|
|
477 |
K::TickQ->Add(this, aTicks);
|
|
478 |
TTickQ::Signal();
|
|
479 |
}
|
|
480 |
|
|
481 |
|
|
482 |
|
|
483 |
|
|
484 |
/**
|
|
485 |
Get the tick count for the next lock.
|
|
486 |
THIS FUNCTION ASSUMES 64 TICKS PER SECOND
|
|
487 |
|
|
488 |
@return KErrGeneral with aTickCount = number of ticks until ETwelveOClock if the
|
|
489 |
requested lock is more than 1 second from the last completed lock.
|
|
490 |
KErrNone with aTickCount = number of ticks until the next aMark otherwise.
|
|
491 |
@pre Wait on TimerMutex before calling this.
|
|
492 |
|
|
493 |
@internalComponent
|
|
494 |
*/
|
|
495 |
TInt TTickLink::GetNextLock(TTimerLockSpec aLock, TInt& aTickCount) const
|
|
496 |
{
|
|
497 |
__ASSERT_WITH_MESSAGE_MUTEX(TTickQ::Mutex,"Wait on TimerMutex before calling this","TTickLink::GetNextLock");
|
|
498 |
TTickQ& tq=*K::TickQ;
|
|
499 |
tq.Synchronise();
|
|
500 |
TUint odd_ticks=TUint(tq.iRtc)&63;
|
|
501 |
TUint lock_ticks=((aLock+1)*64+6)/12;
|
|
502 |
Int64 second=tq.iRtc-odd_ticks;
|
|
503 |
Int64 next_lock=second+lock_ticks;
|
|
504 |
if (next_lock<=tq.iRtc)
|
|
505 |
next_lock+=64;
|
|
506 |
if (next_lock-iLastLock>64)
|
|
507 |
{
|
|
508 |
// Lock on ETwelveOClock
|
|
509 |
aTickCount=64-odd_ticks;
|
|
510 |
__KTRACE_OPT(KTIMING,Kern::Printf("GS%x",aTickCount));
|
|
511 |
return KErrGeneral;
|
|
512 |
}
|
|
513 |
// Lock on aMark
|
|
514 |
aTickCount=TInt(next_lock-tq.iRtc);
|
|
515 |
__KTRACE_OPT(KTIMING,Kern::Printf("GL%x",aTickCount));
|
|
516 |
return KErrNone;
|
|
517 |
}
|
|
518 |
|
|
519 |
/********************************************
|
|
520 |
* Absolute timer queue
|
|
521 |
********************************************/
|
|
522 |
void TSecondQ::TickCallBack(TAny* aPtr)
|
|
523 |
{
|
|
524 |
((TSecondQ*)aPtr)->Tick();
|
|
525 |
}
|
|
526 |
|
|
527 |
void TSecondQ::WakeUpDfc(TAny* aPtr)
|
|
528 |
{
|
|
529 |
TSecondQ& sq=*(TSecondQ*)aPtr;
|
|
530 |
TTickQ& tq=*K::TickQ;
|
|
531 |
TTickQ::Wait();
|
|
532 |
__ASSERT_ALWAYS(tq.iInTick,K::Fault(K::ETickQNotLocked));
|
|
533 |
sq.iTimer.DoCancel(); // make sure second queue timer is stopped
|
|
534 |
sq.Tick(); // call back any timers which have already expired and restart second queue
|
|
535 |
if (!tq.IsEmpty() && tq.FirstDelta()<=0) // Anything ready to be completed now?
|
|
536 |
tq.Tick(); // restart tick queue
|
|
537 |
else
|
|
538 |
{
|
|
539 |
tq.StartTimer(); // restart tick queue
|
|
540 |
tq.iInTick=EFalse;
|
|
541 |
}
|
|
542 |
TTickQ::Signal();
|
|
543 |
}
|
|
544 |
|
|
545 |
TSecondQ::TSecondQ()
|
|
546 |
: iInTick(0), iWakeUpDfc(WakeUpDfc,this,K::TimerDfcQ,2)
|
|
547 |
{
|
|
548 |
iTimer.iPtr=this;
|
|
549 |
iTimer.iCallBack=TickCallBack;
|
|
550 |
}
|
|
551 |
|
|
552 |
void TSecondQ::Tick()
|
|
553 |
{
|
|
554 |
// Called in tick timer callback, so mutex already held
|
|
555 |
// RTC value already incremented
|
|
556 |
Int64 rtc=K::TickQ->iRtc;
|
|
557 |
iInTick=ETrue;
|
|
558 |
if (rtc==iMidnight)
|
|
559 |
{
|
|
560 |
iMidnight+=iTicksPerDay;
|
|
561 |
Kern::AsyncNotifyChanges(EChangesMidnightCrossover);
|
|
562 |
}
|
|
563 |
while (!IsEmpty())
|
|
564 |
{
|
|
565 |
TSecondLink* pS=(TSecondLink*)First();
|
|
566 |
if (pS->iTime>rtc)
|
|
567 |
break;
|
|
568 |
if (K::PowerModel)
|
|
569 |
K::PowerModel->AbsoluteTimerExpired();
|
|
570 |
pS->Deque();
|
|
571 |
pS->iNext=NULL;
|
|
572 |
(*pS->iCallBack)(pS->iPtr);
|
|
573 |
}
|
|
574 |
StartTimer();
|
|
575 |
iInTick=EFalse;
|
|
576 |
}
|
|
577 |
|
|
578 |
void TSecondQ::StartTimer()
|
|
579 |
{
|
|
580 |
TSecondLink* pS=(TSecondLink*)First();
|
|
581 |
Int64 rtc=K::TickQ->iRtc;
|
|
582 |
TInt delta=(TInt)(iMidnight-rtc); // ticks before midnight
|
|
583 |
if (pS!=&iA)
|
|
584 |
{
|
|
585 |
Int64 delta64=pS->iTime-rtc; // ticks before next timer
|
|
586 |
if (delta64<delta)
|
|
587 |
delta=(TInt)delta64;
|
|
588 |
}
|
|
589 |
iNextTrigger=rtc+delta;
|
|
590 |
K::TickQ->Add(&iTimer, delta);
|
|
591 |
}
|
|
592 |
|
|
593 |
// Wait on mutex before calling this
|
|
594 |
void TSecondQ::Add(TSecondLink* aLink)
|
|
595 |
{
|
|
596 |
Int64 time=aLink->iTime;
|
|
597 |
TSecondLink* pS=(TSecondLink*)First();
|
|
598 |
SDblQueLink* anchor=&iA;
|
|
599 |
while(pS!=anchor && pS->iTime<=time)
|
|
600 |
pS=(TSecondLink*)pS->iNext;
|
|
601 |
aLink->InsertBefore(pS);
|
|
602 |
if (!iInTick && time<iNextTrigger)
|
|
603 |
{
|
|
604 |
iTimer.DoCancel();
|
|
605 |
StartTimer();
|
|
606 |
}
|
|
607 |
}
|
|
608 |
|
|
609 |
TInt TSecondQ::FirstDelta()
|
|
610 |
{
|
|
611 |
if (IsEmpty())
|
|
612 |
return KMaxTInt;
|
|
613 |
TSecondLink* pS=(TSecondLink*)First();
|
|
614 |
TTimeK first=pS->iTime*K::TickQ->iNominalTickPeriod;
|
|
615 |
TTimeK now=Kern::SystemTime();
|
|
616 |
Int64 delta=first-now;
|
|
617 |
delta/=1000000;
|
|
618 |
if (delta>KMaxTInt)
|
|
619 |
return KMaxTInt;
|
|
620 |
return (TInt)delta;
|
|
621 |
}
|
|
622 |
|
|
623 |
TTimeK TSecondQ::WakeupTime()
|
|
624 |
//
|
|
625 |
// Called machine goes to standby
|
|
626 |
// Timer mutex is already held
|
|
627 |
//
|
|
628 |
{
|
|
629 |
if (IsEmpty())
|
|
630 |
return 0;
|
|
631 |
TSecondLink* pS=(TSecondLink*)First();
|
|
632 |
return pS->iTime*K::TickQ->iNominalTickPeriod;
|
|
633 |
}
|
|
634 |
|
|
635 |
void TSecondQ::WakeUp()
|
|
636 |
//
|
|
637 |
// Called after machine wakes up
|
|
638 |
// Timer mutex is already held
|
|
639 |
//
|
|
640 |
{
|
|
641 |
TInt secs;
|
|
642 |
AbortTimers(EFalse); // abort any locked timers
|
|
643 |
TInt r=A::SystemTimeInSecondsFrom2000(secs); // get hardware RTC value
|
|
644 |
TUint changes = 0;
|
|
645 |
if (r==KErrNone)
|
|
646 |
{
|
|
647 |
// Apply nonsecure offset if secure clock in use
|
|
648 |
if (K::SecureClockStatus == ESecureClockOk)
|
|
649 |
{
|
|
650 |
secs += K::NonSecureOffsetSeconds;
|
|
651 |
}
|
|
652 |
K::TickQ->Synchronise();
|
|
653 |
r=K::SetSystemTime(secs,0,changes,ETimeSetTime); // update K::SecondQ->iRtc, don't allow it to go backwards
|
|
654 |
__KTRACE_OPT(KPOWER,Kern::Printf("new time=%d, r=%d",secs,r));
|
|
655 |
}
|
|
656 |
K::InactivityQ->Reset();
|
|
657 |
if (r<0)
|
|
658 |
return; // time has not changed
|
|
659 |
|
|
660 |
if (!K::TickQ->iInTick) // if iInTick is already set, wake up DFC is already queued
|
|
661 |
{
|
|
662 |
K::TickQ->iInTick=ETrue; // stop anyone else restarting timer queues
|
|
663 |
iWakeUpDfc.Enque(); // this will restart the timer queues
|
|
664 |
}
|
|
665 |
if (changes & EChangesMidnightCrossover)
|
|
666 |
Kern::AsyncNotifyChanges(EChangesMidnightCrossover);
|
|
667 |
}
|
|
668 |
|
|
669 |
|
|
670 |
|
|
671 |
|
|
672 |
/**
|
|
673 |
Constructor for a second timer.
|
|
674 |
|
|
675 |
@pre Calling thread must be in a critical section.
|
|
676 |
@pre Call in a thread context.
|
|
677 |
@pre Kernel must be unlocked
|
|
678 |
@pre interrupts enabled
|
|
679 |
*/
|
|
680 |
EXPORT_C TSecondLink::TSecondLink()
|
|
681 |
{
|
|
682 |
CHECK_PRECONDITIONS(MASK_KERNEL_UNLOCKED|MASK_INTERRUPTS_ENABLED|MASK_NOT_ISR|MASK_NOT_IDFC|MASK_CRITICAL,"TSecondLink::TSecondLink");
|
|
683 |
iNext=NULL;
|
|
684 |
}
|
|
685 |
|
|
686 |
|
|
687 |
|
|
688 |
|
|
689 |
/**
|
|
690 |
Adds this timer to the second timer queue.
|
|
691 |
|
|
692 |
@param aUTCTime The absolute date and time when the timer is to expire, in UTC.
|
|
693 |
@param aCallBack The callback function that is called when this timer expires.
|
|
694 |
@param aPtr An argument that is passed to the callback function.
|
|
695 |
|
|
696 |
@return KErrNone, if successful;
|
|
697 |
KErrUnderflow, if the specified time is earlier than the system time.
|
|
698 |
KErrOverflow, if the specified time is too big.
|
|
699 |
|
|
700 |
@pre Calling thread must be in a critical section.
|
|
701 |
@pre No fast mutex can be held.
|
|
702 |
@pre Call in a thread context.
|
|
703 |
@pre Kernel must be unlocked
|
|
704 |
@pre interrupts enabled
|
|
705 |
*/
|
|
706 |
EXPORT_C TInt TSecondLink::At(const TTimeK& aUTCTime, TSecondCallBack aCallBack, TAny* aPtr)
|
|
707 |
{
|
|
708 |
CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"TSecondLink::At");
|
|
709 |
TTickQ::Wait();
|
|
710 |
iTime=aUTCTime;
|
|
711 |
iCallBack=aCallBack;
|
|
712 |
iPtr=aPtr;
|
|
713 |
if (iTime<=Kern::SystemTime())
|
|
714 |
{
|
|
715 |
TTickQ::Signal();
|
|
716 |
return KErrUnderflow;
|
|
717 |
}
|
|
718 |
iTime=(iTime+999999)/1000000; // seconds from 00:00:00 01-01-0000 UTC, rounded up
|
|
719 |
Int64 y2k=Int64(KDaysFrom0ADTo2000AD)*Int64(KSecondsPerDay);
|
|
720 |
Int64 delta2k=iTime-y2k;
|
|
721 |
if (delta2k>KMaxTInt)
|
|
722 |
{
|
|
723 |
TTickQ::Signal();
|
|
724 |
return KErrOverflow;
|
|
725 |
}
|
|
726 |
iTime*=K::TickQ->iTicksPerSecond;
|
|
727 |
K::SecondQ->Add(this);
|
|
728 |
TTickQ::Signal();
|
|
729 |
return KErrNone;
|
|
730 |
}
|
|
731 |
|
|
732 |
|
|
733 |
|
|
734 |
|
|
735 |
/**
|
|
736 |
Cancels this timer.
|
|
737 |
|
|
738 |
This timer object is removed from the second timer queue.
|
|
739 |
|
|
740 |
@pre Calling thread must be in a critical section.
|
|
741 |
@pre No fast mutex can be held.
|
|
742 |
@pre Call in a thread context.
|
|
743 |
@pre Kernel must be unlocked
|
|
744 |
@pre interrupts enabled
|
|
745 |
*/
|
|
746 |
EXPORT_C void TSecondLink::Cancel()
|
|
747 |
//
|
|
748 |
// Cancel a pending timer.
|
|
749 |
//
|
|
750 |
{
|
|
751 |
CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"TSecondLink::Cancel");
|
|
752 |
TTickQ::Wait();
|
|
753 |
if (iNext)
|
|
754 |
{
|
|
755 |
Deque();
|
|
756 |
iNext=NULL;
|
|
757 |
}
|
|
758 |
TTickQ::Signal();
|
|
759 |
}
|
|
760 |
|
|
761 |
/********************************************
|
|
762 |
* Inactivity timer queue
|
|
763 |
********************************************/
|
|
764 |
/**
|
|
765 |
Constructor for an inactivity timer.
|
|
766 |
|
|
767 |
@pre Calling thread must be in a critical section.
|
|
768 |
@pre Call in a thread context.
|
|
769 |
@pre Kernel must be unlocked
|
|
770 |
@pre interrupts enabled
|
|
771 |
*/
|
|
772 |
EXPORT_C TInactivityLink::TInactivityLink()
|
|
773 |
{
|
|
774 |
CHECK_PRECONDITIONS(MASK_KERNEL_UNLOCKED|MASK_INTERRUPTS_ENABLED|MASK_NOT_ISR|MASK_NOT_IDFC|MASK_CRITICAL,"TInactivityLink::TInactivityLink");
|
|
775 |
iNext=NULL;
|
|
776 |
}
|
|
777 |
|
|
778 |
|
|
779 |
|
|
780 |
|
|
781 |
/**
|
|
782 |
Adds this inactivity timer to the inactivity timer queue.
|
|
783 |
|
|
784 |
@param aSeconds The period of inactivity needed to trigger this timer, in seconds.
|
|
785 |
@param aCallBack The callback function that is called when this timer expires.
|
|
786 |
@param aPtr An argument that is passed to the callback function.
|
|
787 |
|
|
788 |
@return KErrNone, if successful;
|
|
789 |
KErrArgument, if aSeconds is negative;
|
|
790 |
KErrOverflow, if the number of ticks corresponding to aSeconds
|
|
791 |
overflows a 32 bit signed integer.
|
|
792 |
|
|
793 |
@pre Calling thread must be in a critical section.
|
|
794 |
@pre No fast mutex can be held.
|
|
795 |
@pre Call in a thread context.
|
|
796 |
@pre Kernel must be unlocked
|
|
797 |
@pre interrupts enabled
|
|
798 |
*/
|
|
799 |
EXPORT_C TInt TInactivityLink::Start(TInt aSeconds, TInactivityCallBack aCallBack, TAny* aPtr)
|
|
800 |
{
|
|
801 |
CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"TInactivityLink::Start");
|
|
802 |
// Time period can't be more than 2^31 ticks (just over 1 year at 64Hz)
|
|
803 |
TTickQ& tq=*K::TickQ;
|
|
804 |
TInactivityQ& iq=*K::InactivityQ;
|
|
805 |
if (aSeconds<0)
|
|
806 |
return KErrArgument;
|
|
807 |
Int64 ticks(aSeconds);
|
|
808 |
ticks*=Int64(tq.iTicksPerSecond);
|
|
809 |
if (ticks>KMaxTInt)
|
|
810 |
return KErrOverflow;
|
|
811 |
TTickQ::Wait();
|
|
812 |
if (iNext)
|
|
813 |
{
|
|
814 |
Deque();
|
|
815 |
iNext=NULL;
|
|
816 |
}
|
|
817 |
iTime=(TUint32)ticks;
|
|
818 |
iPtr=aPtr;
|
|
819 |
iCallBack=aCallBack;
|
|
820 |
TUint32 tc=Kern::TickCount();
|
|
821 |
NKern::LockSystem();
|
|
822 |
TUint32 lev = iq.iLastEventTime;
|
|
823 |
SDblQue* pQ=&iq;
|
|
824 |
if (tc-lev>=iTime)
|
|
825 |
{
|
|
826 |
pQ=&iq.iPending;
|
|
827 |
if (pQ->IsEmpty())
|
|
828 |
{
|
|
829 |
// adding to empty pending queue, do with system lock held
|
|
830 |
// to prevent race with AddEvent
|
|
831 |
pQ->Add(this);
|
|
832 |
pQ=NULL;
|
|
833 |
}
|
|
834 |
}
|
|
835 |
NKern::UnlockSystem();
|
|
836 |
if (pQ)
|
|
837 |
{
|
|
838 |
TInactivityLink* pL=(TInactivityLink*)pQ->First();
|
|
839 |
while (pL!=&pQ->iA && pL->iTime<=iTime)
|
|
840 |
pL=(TInactivityLink*)pL->iNext;
|
|
841 |
InsertBefore(pL);
|
|
842 |
if (pQ==&iq && iq.First()==this && !iq.iInTick)
|
|
843 |
{
|
|
844 |
// need to restart tick timer
|
|
845 |
iq.iTimer.DoCancel();
|
|
846 |
tq.Add(&iq.iTimer, iTime+lev-tq.iLastTicks);
|
|
847 |
}
|
|
848 |
}
|
|
849 |
TTickQ::Signal();
|
|
850 |
return KErrNone;
|
|
851 |
}
|
|
852 |
|
|
853 |
|
|
854 |
|
|
855 |
|
|
856 |
/**
|
|
857 |
Cancels this inactivity timer.
|
|
858 |
|
|
859 |
This timer object is removed from the inactivity timer queue.
|
|
860 |
|
|
861 |
@pre Calling thread must be in a critical section.
|
|
862 |
@pre No fast mutex can be held.
|
|
863 |
@pre Call in a thread context.
|
|
864 |
@pre Kernel must be unlocked
|
|
865 |
@pre interrupts enabled
|
|
866 |
*/
|
|
867 |
EXPORT_C void TInactivityLink::Cancel()
|
|
868 |
{
|
|
869 |
CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"TInactivityLink::Cancel");
|
|
870 |
TTickQ::Wait();
|
|
871 |
if (iNext)
|
|
872 |
{
|
|
873 |
NKern::LockSystem();
|
|
874 |
Deque();
|
|
875 |
NKern::UnlockSystem();
|
|
876 |
iNext=NULL;
|
|
877 |
}
|
|
878 |
TTickQ::Signal();
|
|
879 |
}
|
|
880 |
|
|
881 |
void TInactivityQ::TimerCallBack(TAny* aPtr)
|
|
882 |
{
|
|
883 |
((TInactivityQ*)aPtr)->Expired(ETrue);
|
|
884 |
}
|
|
885 |
|
|
886 |
void TInactivityQ::EventDfcFn(TAny* aPtr)
|
|
887 |
{
|
|
888 |
((TInactivityQ*)aPtr)->EventDfc();
|
|
889 |
}
|
|
890 |
|
|
891 |
TInactivityQ::TInactivityQ()
|
|
892 |
: iLastEventTime(0),
|
|
893 |
iInTick(EFalse),
|
|
894 |
iEventDfc(EventDfcFn,this,K::TimerDfcQ,1)
|
|
895 |
{
|
|
896 |
iTimer.iPtr=this;
|
|
897 |
iTimer.iCallBack=TimerCallBack;
|
|
898 |
}
|
|
899 |
|
|
900 |
void TInactivityQ::Reset()
|
|
901 |
{
|
|
902 |
TUint32 tc=Kern::TickCount();
|
|
903 |
NKern::LockSystem();
|
|
904 |
iLastEventTime=tc;
|
|
905 |
if (!iPending.IsEmpty())
|
|
906 |
iEventDfc.Enque(SYSTEM_LOCK);
|
|
907 |
else
|
|
908 |
NKern::UnlockSystem();
|
|
909 |
}
|
|
910 |
|
|
911 |
TInt TInactivityQ::InactiveTime()
|
|
912 |
{
|
|
913 |
TUint32 lev=iLastEventTime;
|
|
914 |
TUint32 tc=Kern::TickCount();
|
|
915 |
tc-=lev;
|
|
916 |
if (tc>0x80000000u)
|
|
917 |
tc=0x80000000u;
|
|
918 |
tc/=K::TickQ->iTicksPerSecond;
|
|
919 |
return (TInt)tc;
|
|
920 |
}
|
|
921 |
|
|
922 |
void TInactivityQ::Expired(TBool aTicksUpdated)
|
|
923 |
{
|
|
924 |
// called in tick timer call back, so timer mutex held
|
|
925 |
TTickQ& tq=*K::TickQ;
|
|
926 |
TUint32 tc;
|
|
927 |
if (aTicksUpdated)
|
|
928 |
tc=tq.iLastTicks-iLastEventTime;
|
|
929 |
else
|
|
930 |
tc=Kern::TickCount()-iLastEventTime;
|
|
931 |
iInTick=ETrue;
|
|
932 |
while (!IsEmpty())
|
|
933 |
{
|
|
934 |
TInactivityLink* pI=(TInactivityLink*)First();
|
|
935 |
if (tc<pI->iTime)
|
|
936 |
{
|
|
937 |
tq.Add(&iTimer, pI->iTime-tc);
|
|
938 |
break;
|
|
939 |
}
|
|
940 |
pI->Deque();
|
|
941 |
pI->iNext=NULL;
|
|
942 |
(*pI->iCallBack)(pI->iPtr);
|
|
943 |
}
|
|
944 |
iInTick=EFalse;
|
|
945 |
}
|
|
946 |
|
|
947 |
void TInactivityQ::EventDfc()
|
|
948 |
{
|
|
949 |
// called after an event to transfer pending timers to active queue
|
|
950 |
TTickQ::Wait();
|
|
951 |
|
|
952 |
SDblQueLink* anchor=&iA;
|
|
953 |
TInactivityLink* pActL=(TInactivityLink*)iA.iNext; // first active timer
|
|
954 |
TInactivityLink* pOldFirstActive=pActL;
|
|
955 |
|
|
956 |
while (!iPending.IsEmpty())
|
|
957 |
{
|
|
958 |
TInactivityLink* pPendL=(TInactivityLink*)iPending.First();
|
|
959 |
pPendL->Deque();
|
|
960 |
TUint32 pending_time=pPendL->iTime;
|
|
961 |
while (pActL!=anchor && pending_time>=pActL->iTime)
|
|
962 |
pActL=(TInactivityLink*)pActL->iNext; // loop until pActL expires after pPendL
|
|
963 |
pPendL->InsertBefore(pActL); // add pending one before first later one
|
|
964 |
// leave pActL where it is - OK since pending Q is ordered
|
|
965 |
}
|
|
966 |
|
|
967 |
// prevent double calling of this DFC
|
|
968 |
// pending queue can only become nonempty by adding a TInactivityLink
|
|
969 |
// which would require TTickQ::Wait() to be called
|
|
970 |
iEventDfc.Cancel();
|
|
971 |
|
|
972 |
pActL=(TInactivityLink*)iA.iNext; // first active timer
|
|
973 |
if (pActL!=pOldFirstActive)
|
|
974 |
{
|
|
975 |
// need to restart tick timer
|
|
976 |
iTimer.DoCancel();
|
|
977 |
Expired(EFalse);
|
|
978 |
}
|
|
979 |
|
|
980 |
TTickQ::Signal();
|
|
981 |
}
|
|
982 |
|
|
983 |
/********************************************
|
|
984 |
* DTimer class
|
|
985 |
********************************************/
|
|
986 |
DTimer::DTimer()
|
|
987 |
{}
|
|
988 |
|
|
989 |
DTimer::~DTimer()
|
|
990 |
{
|
|
991 |
// cancel timer before destroying
|
|
992 |
Cancel();
|
|
993 |
}
|
|
994 |
|
|
995 |
TInt DTimer::Create(DThread *aThread)
|
|
996 |
//
|
|
997 |
// Create a Timer. Always owned by a thread.
|
|
998 |
//
|
|
999 |
{
|
|
1000 |
__KTRACE_OPT(KTHREAD,Kern::Printf("DTimer::Create thread %O",aThread));
|
|
1001 |
SetOwner(aThread);
|
|
1002 |
return iTimer.Create();
|
|
1003 |
}
|
|
1004 |
|
|
1005 |
TInt DTimer::RequestUserHandle(DThread* aThread, TOwnerType aType)
|
|
1006 |
{
|
|
1007 |
if (aThread!=Owner() || aType!=EOwnerThread)
|
|
1008 |
return KErrPermissionDenied;
|
|
1009 |
return KErrNone;
|
|
1010 |
}
|
|
1011 |
|
|
1012 |
void DTimer::TimerComplete(TAny* aPtr)
|
|
1013 |
//
|
|
1014 |
// Called when the relative timer completes.
|
|
1015 |
//
|
|
1016 |
{
|
|
1017 |
DTimer* pT=FromPtr(aPtr);
|
|
1018 |
if (pT->iTimer.iState == TTimer::EWaiting)
|
|
1019 |
{
|
|
1020 |
Kern::QueueRequestComplete(pT->Owner(),pT->iTimer.iRequest,KErrNone);
|
|
1021 |
pT->iTimer.iState = (TUint8)TTimer::EIdle;
|
|
1022 |
}
|
|
1023 |
}
|
|
1024 |
|
|
1025 |
void DTimer::SecondComplete(TAny* aPtr)
|
|
1026 |
//
|
|
1027 |
// Called when the absolute timer completes.
|
|
1028 |
//
|
|
1029 |
{
|
|
1030 |
DTimer* pT=FromPtr(aPtr);
|
|
1031 |
if (pT->iTimer.iState == TTimer::EWaiting)
|
|
1032 |
{
|
|
1033 |
Kern::QueueRequestComplete(pT->Owner(),pT->iTimer.iRequest,KErrNone);
|
|
1034 |
pT->iTimer.iState = (TUint8)TTimer::EIdle;
|
|
1035 |
}
|
|
1036 |
}
|
|
1037 |
|
|
1038 |
void DTimer::LockComplete(TAny* aPtr)
|
|
1039 |
//
|
|
1040 |
// Called when the locked timer completes.
|
|
1041 |
//
|
|
1042 |
{
|
|
1043 |
DTimer* pT=(DTimer*)aPtr;
|
|
1044 |
if (pT->iTimer.iState == TTimer::EWaiting)
|
|
1045 |
{
|
|
1046 |
pT->iTimer.TickLink().iLastLock=K::TickQ->iRtc;
|
|
1047 |
__KTRACE_OPT(KTIMING,Kern::Printf("LC%lx",pT->iTimer.TickLink().iLastLock));
|
|
1048 |
Kern::QueueRequestComplete(pT->Owner(),pT->iTimer.iRequest,KErrNone);
|
|
1049 |
pT->iTimer.iState = (TUint8)TTimer::EIdle;
|
|
1050 |
}
|
|
1051 |
}
|
|
1052 |
|
|
1053 |
void DTimer::LockSynchronize(TAny* aPtr)
|
|
1054 |
//
|
|
1055 |
// Called when the locked timer synchronises
|
|
1056 |
//
|
|
1057 |
{
|
|
1058 |
DTimer* pT=(DTimer*)aPtr;
|
|
1059 |
if (pT->iTimer.iState == TTimer::EWaiting)
|
|
1060 |
{
|
|
1061 |
pT->iTimer.TickLink().iLastLock=K::TickQ->iRtc;
|
|
1062 |
__KTRACE_OPT(KTIMING,Kern::Printf("LS%lx",pT->iTimer.TickLink().iLastLock));
|
|
1063 |
Kern::QueueRequestComplete(pT->Owner(),pT->iTimer.iRequest,KErrGeneral);
|
|
1064 |
pT->iTimer.iState = (TUint8)TTimer::EIdle;
|
|
1065 |
}
|
|
1066 |
}
|
|
1067 |
|
|
1068 |
void DTimer::MsComplete(TAny* aTimer)
|
|
1069 |
{
|
|
1070 |
// called in DFC, system unlocked
|
|
1071 |
DTimer* pT=FromPtr(aTimer);
|
|
1072 |
NKern::LockSystem();
|
|
1073 |
pT->iTimer.iState = (TUint8)TTimer::EIdle;
|
|
1074 |
Kern::QueueRequestComplete(pT->Owner(), pT->iTimer.iRequest,KErrNone);
|
|
1075 |
NKern::UnlockSystem();
|
|
1076 |
}
|
|
1077 |
|
|
1078 |
void DTimer::HighRes(TRequestStatus& aStatus, TInt anInterval)
|
|
1079 |
{
|
|
1080 |
// enter and return with system locked
|
|
1081 |
TInt r=iTimer.AfterHighRes(anInterval,MsComplete,aStatus);
|
|
1082 |
if (r!=KErrNone)
|
|
1083 |
K::PanicCurrentThread(ETimerAlreadyPending);
|
|
1084 |
}
|
|
1085 |
|
|
1086 |
void DTimer::Cancel()
|
|
1087 |
//
|
|
1088 |
// Cancel an outstanding request.
|
|
1089 |
// system unlocked here
|
|
1090 |
//
|
|
1091 |
{
|
|
1092 |
iTimer.Cancel(Owner());
|
|
1093 |
}
|
|
1094 |
|
|
1095 |
void DTimer::Abort(TBool aAbortAbsolute)
|
|
1096 |
//
|
|
1097 |
// Abort an outstanding request.
|
|
1098 |
// TimerMutex is already held here.
|
|
1099 |
//
|
|
1100 |
{
|
|
1101 |
TInt typeMask=aAbortAbsolute?(TTimer::ELocked|TTimer::EAbsolute):(TTimer::ELocked);
|
|
1102 |
iTimer.Abort(Owner(),typeMask);
|
|
1103 |
}
|
|
1104 |
|
|
1105 |
TInt DTimer::After(TRequestStatus& aStatus, TInt anInterval)
|
|
1106 |
//
|
|
1107 |
// Request a relative time.
|
|
1108 |
// System is unlocked here
|
|
1109 |
//
|
|
1110 |
{
|
|
1111 |
return iTimer.After(anInterval,TimerComplete,aStatus);
|
|
1112 |
}
|
|
1113 |
|
|
1114 |
TInt DTimer::At(TRequestStatus& aStatus, const TTimeK& aTime)
|
|
1115 |
//
|
|
1116 |
// Request an absolute time.
|
|
1117 |
//
|
|
1118 |
{
|
|
1119 |
return iTimer.At(aTime,SecondComplete,aStatus);
|
|
1120 |
}
|
|
1121 |
|
|
1122 |
TInt DTimer::Inactivity(TRequestStatus& aStatus, TInt aSeconds)
|
|
1123 |
//
|
|
1124 |
// Request an inactivity time.
|
|
1125 |
//
|
|
1126 |
{
|
|
1127 |
return iTimer.Inactivity(aSeconds,TimerComplete,aStatus);
|
|
1128 |
}
|
|
1129 |
|
|
1130 |
TInt DTimer::Lock(TRequestStatus& aStatus, TTimerLockSpec aLock)
|
|
1131 |
//
|
|
1132 |
// Request a synchronisation lock to a fraction of a second.
|
|
1133 |
//
|
|
1134 |
{
|
|
1135 |
TTickQ::Wait();
|
|
1136 |
NKern::LockSystem();
|
|
1137 |
if (iTimer.iState != TTimer::EIdle || iTimer.iRequest->SetStatus(&aStatus) != KErrNone)
|
|
1138 |
{
|
|
1139 |
NKern::UnlockSystem();
|
|
1140 |
TTickQ::Signal();
|
|
1141 |
return KErrInUse;
|
|
1142 |
}
|
|
1143 |
iTimer.iState = (TUint8)TTimer::EWaiting;
|
|
1144 |
if (iTimer.Type()!=TTimer::ELocked)
|
|
1145 |
iTimer.SetType(TTimer::ELocked);
|
|
1146 |
NKern::UnlockSystem();
|
|
1147 |
TInt ticks;
|
|
1148 |
TInt r=iTimer.TickLink().GetNextLock(aLock, ticks);
|
|
1149 |
if (r==KErrNone)
|
|
1150 |
iTimer.TickLink().Lock(ticks,LockComplete,this);
|
|
1151 |
else
|
|
1152 |
iTimer.TickLink().Lock(ticks,LockSynchronize,this);
|
|
1153 |
TTickQ::Signal();
|
|
1154 |
return KErrNone;
|
|
1155 |
}
|
|
1156 |
|
|
1157 |
|
|
1158 |
/********************************************
|
|
1159 |
* Multipurpose timer
|
|
1160 |
********************************************/
|
|
1161 |
|
|
1162 |
TInt TTimer::Create()
|
|
1163 |
{
|
|
1164 |
return Kern::CreateClientRequest(iRequest);
|
|
1165 |
}
|
|
1166 |
|
|
1167 |
TTimer::~TTimer()
|
|
1168 |
{
|
|
1169 |
Kern::DestroyClientRequest(iRequest);
|
|
1170 |
}
|
|
1171 |
|
|
1172 |
void TTimer::SetType(TTimerType aType)
|
|
1173 |
{
|
|
1174 |
switch (aType)
|
|
1175 |
{
|
|
1176 |
case ERelative:
|
|
1177 |
case ELocked:
|
|
1178 |
new (&TickLink()) TTickLink;
|
|
1179 |
break;
|
|
1180 |
case EAbsolute:
|
|
1181 |
new (&SecondLink()) TSecondLink;
|
|
1182 |
break;
|
|
1183 |
case EHighRes:
|
|
1184 |
break;
|
|
1185 |
case EInactivity:
|
|
1186 |
new (&Inact()) TInactivityLink;
|
|
1187 |
break;
|
|
1188 |
default:
|
|
1189 |
K::Fault(K::EBadTimerType);
|
|
1190 |
}
|
|
1191 |
iType=(TUint8)aType;
|
|
1192 |
}
|
|
1193 |
|
|
1194 |
TInt TTimer::AfterHighRes(TInt anInterval, NTimerFn aFunction, TRequestStatus& aStatus)
|
|
1195 |
{
|
|
1196 |
// enter and return with system locked
|
|
1197 |
if (iState!=EIdle || iRequest->SetStatus(&aStatus) != KErrNone)
|
|
1198 |
return KErrInUse;
|
|
1199 |
iState = (TUint8)EWaitHighRes;
|
|
1200 |
SetType(EHighRes);
|
|
1201 |
TInt msp=NTickPeriod();
|
|
1202 |
TInt t=(TInt)(((TUint)anInterval+msp-1)/msp); // convert microseconds to milliseconds, rounding up
|
|
1203 |
new (&Ms()) NTimer(aFunction,this);
|
|
1204 |
Ms().OneShot(t,ETrue); // start millisecond timer, complete in DFC
|
|
1205 |
return KErrNone;
|
|
1206 |
}
|
|
1207 |
|
|
1208 |
void TTimer::Cancel(DThread* aThread)
|
|
1209 |
//
|
|
1210 |
// Cancel an outstanding request.
|
|
1211 |
// Enter and return with system unlocked
|
|
1212 |
//
|
|
1213 |
{
|
|
1214 |
NKern::LockSystem();
|
|
1215 |
TTimerState s = (TTimerState)iState;
|
|
1216 |
if (s==EWaitHighRes)
|
|
1217 |
{
|
|
1218 |
Ms().Cancel();
|
|
1219 |
iState=(TUint8)EIdle;
|
|
1220 |
s=EIdle;
|
|
1221 |
if (aThread)
|
|
1222 |
Kern::QueueRequestComplete(aThread, iRequest,KErrCancel);
|
|
1223 |
NKern::UnlockSystem();
|
|
1224 |
}
|
|
1225 |
else
|
|
1226 |
NKern::UnlockSystem();
|
|
1227 |
if (s==EIdle)
|
|
1228 |
return;
|
|
1229 |
TTickQ::Wait();
|
|
1230 |
if (iState==EWaiting)
|
|
1231 |
{
|
|
1232 |
if (iType==EAbsolute)
|
|
1233 |
SecondLink().Cancel();
|
|
1234 |
else if (iType==EInactivity)
|
|
1235 |
Inact().Cancel();
|
|
1236 |
else
|
|
1237 |
TickLink().Cancel();
|
|
1238 |
if (aThread)
|
|
1239 |
Kern::QueueRequestComplete(aThread,iRequest,KErrCancel);
|
|
1240 |
iState=(TUint8)EIdle;
|
|
1241 |
}
|
|
1242 |
TTickQ::Signal();
|
|
1243 |
}
|
|
1244 |
|
|
1245 |
TInt TTimer::After(TInt anInterval, TTickCallBack aFunction, TRequestStatus& aStatus)
|
|
1246 |
//
|
|
1247 |
// Request a relative time.
|
|
1248 |
// Enter and return with system unlocked
|
|
1249 |
//
|
|
1250 |
{
|
|
1251 |
TTickQ::Wait();
|
|
1252 |
NKern::LockSystem();
|
|
1253 |
if (iState!=EIdle || iRequest->SetStatus(&aStatus) != KErrNone)
|
|
1254 |
{
|
|
1255 |
NKern::UnlockSystem();
|
|
1256 |
TTickQ::Signal();
|
|
1257 |
return KErrInUse;
|
|
1258 |
}
|
|
1259 |
iState=(TUint8)EWaiting;
|
|
1260 |
SetType(ERelative);
|
|
1261 |
NKern::UnlockSystem();
|
|
1262 |
TickLink().OneShot(anInterval,aFunction,this);
|
|
1263 |
TTickQ::Signal();
|
|
1264 |
return KErrNone;
|
|
1265 |
}
|
|
1266 |
|
|
1267 |
TInt TTimer::At(const TTimeK& aTime, TSecondCallBack aFunction, TRequestStatus& aStatus)
|
|
1268 |
//
|
|
1269 |
// Request an absolute time.
|
|
1270 |
// Enter and return with system unlocked
|
|
1271 |
//
|
|
1272 |
{
|
|
1273 |
TTickQ::Wait();
|
|
1274 |
NKern::LockSystem();
|
|
1275 |
if (iState!=EIdle || iRequest->SetStatus(&aStatus) != KErrNone)
|
|
1276 |
{
|
|
1277 |
NKern::UnlockSystem();
|
|
1278 |
TTickQ::Signal();
|
|
1279 |
return KErrInUse;
|
|
1280 |
}
|
|
1281 |
iState=(TUint8)EWaiting;
|
|
1282 |
SetType(EAbsolute);
|
|
1283 |
NKern::UnlockSystem();
|
|
1284 |
TInt r=SecondLink().At(aTime,aFunction,this);
|
|
1285 |
if (r!=KErrNone)
|
|
1286 |
{
|
|
1287 |
iState=(TUint8)EIdle;
|
|
1288 |
iRequest->Reset();
|
|
1289 |
}
|
|
1290 |
TTickQ::Signal();
|
|
1291 |
return r;
|
|
1292 |
}
|
|
1293 |
|
|
1294 |
TInt TTimer::Inactivity(TInt aSeconds, TInactivityCallBack aFunction, TRequestStatus& aStatus)
|
|
1295 |
//
|
|
1296 |
// Request an inactivity time.
|
|
1297 |
// Enter and return with system unlocked
|
|
1298 |
//
|
|
1299 |
{
|
|
1300 |
TTickQ::Wait();
|
|
1301 |
NKern::LockSystem();
|
|
1302 |
if (iState!=EIdle || iRequest->SetStatus(&aStatus) != KErrNone)
|
|
1303 |
{
|
|
1304 |
NKern::UnlockSystem();
|
|
1305 |
TTickQ::Signal();
|
|
1306 |
return KErrInUse;
|
|
1307 |
}
|
|
1308 |
iState=(TUint8)EWaiting;
|
|
1309 |
SetType(EInactivity);
|
|
1310 |
NKern::UnlockSystem();
|
|
1311 |
TInt r=Inact().Start(aSeconds,aFunction,this);
|
|
1312 |
if (r!=KErrNone)
|
|
1313 |
{
|
|
1314 |
iState=(TUint8)EIdle;
|
|
1315 |
iRequest->Reset();
|
|
1316 |
}
|
|
1317 |
TTickQ::Signal();
|
|
1318 |
return r;
|
|
1319 |
}
|
|
1320 |
|
|
1321 |
void TTimer::Abort(DThread* aThread, TInt aTypeMask)
|
|
1322 |
//
|
|
1323 |
// Abort an outstanding request.
|
|
1324 |
// TimerMutex is already held here.
|
|
1325 |
//
|
|
1326 |
{
|
|
1327 |
NKern::LockSystem();
|
|
1328 |
if (iState!=EWaiting || (iType&aTypeMask)==0)
|
|
1329 |
{
|
|
1330 |
NKern::UnlockSystem();
|
|
1331 |
return;
|
|
1332 |
}
|
|
1333 |
NKern::UnlockSystem();
|
|
1334 |
if (iType==EAbsolute)
|
|
1335 |
SecondLink().Cancel();
|
|
1336 |
else
|
|
1337 |
TickLink().Cancel();
|
|
1338 |
if (iType==ELocked)
|
|
1339 |
TickLink().iLastLock=-1;
|
|
1340 |
if (aThread)
|
|
1341 |
Kern::QueueRequestComplete(aThread,iRequest,KErrAbort);
|
|
1342 |
iState=(TUint8)EIdle;
|
|
1343 |
}
|
|
1344 |
|
|
1345 |
|
|
1346 |
/********************************************
|
|
1347 |
* Timer utilities
|
|
1348 |
********************************************/
|
|
1349 |
TInt ExecHandler::TimerCreate()
|
|
1350 |
//
|
|
1351 |
// Create a Timer.
|
|
1352 |
//
|
|
1353 |
{
|
|
1354 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::TimerCreate"));
|
|
1355 |
NKern::ThreadEnterCS();
|
|
1356 |
DTimer *pT=new DTimer;
|
|
1357 |
TInt r=KErrNoMemory;
|
|
1358 |
if (pT)
|
|
1359 |
{
|
|
1360 |
r=pT->Create(TheCurrentThread);
|
|
1361 |
if (r==KErrNone)
|
|
1362 |
r=K::AddObject(pT,ETimer);
|
|
1363 |
if (r==KErrNone)
|
|
1364 |
r=K::MakeHandle(EOwnerThread,pT);
|
|
1365 |
}
|
|
1366 |
if (pT && r<KErrNone)
|
|
1367 |
pT->Close(NULL);
|
|
1368 |
NKern::ThreadLeaveCS();
|
|
1369 |
return r;
|
|
1370 |
}
|
|
1371 |
|
|
1372 |
void ExecHandler::TimerCancel(DTimer* aTimer)
|
|
1373 |
{
|
|
1374 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::TimerCancel"));
|
|
1375 |
K::ThreadEnterCS();
|
|
1376 |
aTimer->Cancel(); // OK since timer handles always thread relative
|
|
1377 |
K::ThreadLeaveCS();
|
|
1378 |
}
|
|
1379 |
|
|
1380 |
void ExecHandler::TimerAfter(DTimer* aTimer, TRequestStatus& aStatus, TInt aTime)
|
|
1381 |
{
|
|
1382 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::TimerAfter"));
|
|
1383 |
K::ThreadEnterCS();
|
|
1384 |
TInt r=aTimer->After(aStatus,aTime); // OK since timer handles always thread relative
|
|
1385 |
K::ThreadLeaveCS();
|
|
1386 |
if (r!=KErrNone)
|
|
1387 |
K::PanicCurrentThread(ETimerAlreadyPending);
|
|
1388 |
}
|
|
1389 |
|
|
1390 |
void ExecHandler::TimerHighRes(DTimer* aTimer, TRequestStatus& aStatus, TInt aTime)
|
|
1391 |
{
|
|
1392 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::TimerHighRes"));
|
|
1393 |
aTimer->HighRes(aStatus,aTime);
|
|
1394 |
}
|
|
1395 |
|
|
1396 |
void ExecHandler::TimerAt(DTimer* aTimer, TRequestStatus& aStatus, TUint32 aTimeLo, TUint32 aTimeHi)
|
|
1397 |
{
|
|
1398 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::TimerAt"));
|
|
1399 |
TTimeK time = MAKE_TINT64(aTimeHi,aTimeLo);
|
|
1400 |
K::ThreadEnterCS();
|
|
1401 |
TInt r=aTimer->At(aStatus,time); // OK since timer handles always thread relative
|
|
1402 |
K::ThreadLeaveCS();
|
|
1403 |
if (r==KErrInUse)
|
|
1404 |
K::PanicCurrentThread(ETimerAlreadyPending);
|
|
1405 |
else if (r!=KErrNone)
|
|
1406 |
{
|
|
1407 |
TRequestStatus* status = &aStatus;
|
|
1408 |
Kern::RequestComplete(status, r);
|
|
1409 |
}
|
|
1410 |
}
|
|
1411 |
|
|
1412 |
void ExecHandler::TimerLock(DTimer* aTimer, TRequestStatus& aStatus, TTimerLockSpec aLock)
|
|
1413 |
{
|
|
1414 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::TimerLock"));
|
|
1415 |
K::ThreadEnterCS();
|
|
1416 |
TInt r=aTimer->Lock(aStatus,aLock); // OK since timer handles always thread relative
|
|
1417 |
K::ThreadLeaveCS();
|
|
1418 |
if (r!=KErrNone)
|
|
1419 |
K::PanicCurrentThread(ETimerAlreadyPending);
|
|
1420 |
}
|
|
1421 |
|
|
1422 |
void ExecHandler::TimerInactivity(DTimer* aTimer, TRequestStatus& aStatus, TInt aSeconds)
|
|
1423 |
{
|
|
1424 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::TimerInactivity"));
|
|
1425 |
K::ThreadEnterCS();
|
|
1426 |
TInt r=aTimer->Inactivity(aStatus,aSeconds); // OK since timer handles always thread relative
|
|
1427 |
K::ThreadLeaveCS();
|
|
1428 |
if (r==KErrInUse)
|
|
1429 |
K::PanicCurrentThread(ETimerAlreadyPending);
|
|
1430 |
else if (r!=KErrNone)
|
|
1431 |
{
|
|
1432 |
TRequestStatus* status = &aStatus;
|
|
1433 |
Kern::RequestComplete(status, r);
|
|
1434 |
}
|
|
1435 |
}
|
|
1436 |
|
|
1437 |
/********************************************
|
|
1438 |
* Miscellaneous
|
|
1439 |
********************************************/
|
|
1440 |
TInt ExecHandler::UserInactivityTime()
|
|
1441 |
{
|
|
1442 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::UserInactivityTime"));
|
|
1443 |
return K::InactivityQ->InactiveTime();
|
|
1444 |
}
|
|
1445 |
|
|
1446 |
void ExecHandler::ResetInactivityTime()
|
|
1447 |
{
|
|
1448 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::ResetInactivityTime"));
|
|
1449 |
NKern::ThreadEnterCS();
|
|
1450 |
K::InactivityQ->Reset();
|
|
1451 |
NKern::ThreadLeaveCS();
|
|
1452 |
}
|
|
1453 |
|
|
1454 |
EXPORT_C TUint32 Kern::TickCount()
|
|
1455 |
/**
|
|
1456 |
Returns the number of system ticks since boot.
|
|
1457 |
*/
|
|
1458 |
{
|
|
1459 |
TTickQ& q=*K::TickQ;
|
|
1460 |
TInt irq = __SPIN_LOCK_IRQSAVE(TheTimerQ.iTimerSpinLock);
|
|
1461 |
TUint32 last_ticks=q.iLastTicks;
|
|
1462 |
TUint32 lastms=q.iLastMs;
|
|
1463 |
TUint32 ms=NTickCount();
|
|
1464 |
TUint32 p=(TUint32)q.iTickPeriod;
|
|
1465 |
__SPIN_UNLOCK_IRQRESTORE(TheTimerQ.iTimerSpinLock,irq);
|
|
1466 |
return last_ticks+((ms-lastms-1)*q.iMsTickPeriod)/p;
|
|
1467 |
}
|
|
1468 |
|
|
1469 |
TInt K::SecondsFrom2000(const TTimeK& aTime, TInt& aSeconds)
|
|
1470 |
{
|
|
1471 |
TInt64 diff=aTime/1000000; // convert microseconds to seconds
|
|
1472 |
diff-=K::Year2000InSeconds;
|
|
1473 |
if (diff>KMaxTInt || diff<KMinTInt)
|
|
1474 |
return KErrOverflow;
|
|
1475 |
aSeconds=(TInt)diff;
|
|
1476 |
return KErrNone;
|
|
1477 |
}
|
|
1478 |
|
|
1479 |
EXPORT_C TTimeK Kern::SystemTimeSecure()
|
|
1480 |
/**
|
|
1481 |
Gets the current system time.
|
|
1482 |
|
|
1483 |
@return The current time as the number of microseconds since midnight, January 1st, 0 AD nominal Gregorian.
|
|
1484 |
*/
|
|
1485 |
{
|
|
1486 |
TTimeK r = Kern::SystemTime();
|
|
1487 |
if (K::SecureClockStatus==ESecureClockOk)
|
|
1488 |
{
|
|
1489 |
/*
|
|
1490 |
NB: We read the software clock and unapply the nonsecure offset, rather than
|
|
1491 |
reading the hardware rtc directly, for two reasons:
|
|
1492 |
1. The software clock ticks at 64Hz, whereas the variant API
|
|
1493 |
for reading the rtc is a measly 1Hz.
|
|
1494 |
2. Less code.
|
|
1495 |
*/
|
|
1496 |
TInt64 nonsecure_offset=K::NonSecureOffsetSeconds;
|
|
1497 |
nonsecure_offset *= 1000000;
|
|
1498 |
r -= nonsecure_offset;
|
|
1499 |
}
|
|
1500 |
else
|
|
1501 |
{
|
|
1502 |
// Driver/variant code mustn't try to read the secure system time before the HAL has
|
|
1503 |
// loaded (i.e. the nonsecure offset has been read from permanent storage). If you hit the
|
|
1504 |
// assert below you need to change your code to use the nonsecure time API.
|
|
1505 |
__ASSERT_DEBUG(K::SecureClockStatus!=ESecureClockPresent, Kern::Printf("Secure clock read but no nonsecure offset is present"));
|
|
1506 |
}
|
|
1507 |
return r;
|
|
1508 |
}
|
|
1509 |
|
|
1510 |
EXPORT_C TTimeK Kern::SystemTime()
|
|
1511 |
/**
|
|
1512 |
Gets the current nonsecure (user-settable) system time.
|
|
1513 |
|
|
1514 |
@return The current time as the number of microseconds since midnight, January 1st, 0 AD nominal Gregorian.
|
|
1515 |
*/
|
|
1516 |
{
|
|
1517 |
TTickQ& q=*K::TickQ;
|
|
1518 |
TInt irq = __SPIN_LOCK_IRQSAVE(TheTimerQ.iTimerSpinLock);
|
|
1519 |
Int64 rtc = q.iRtc;
|
|
1520 |
TUint32 lastms=q.iLastMs;
|
|
1521 |
TUint32 ms=NTickCount();
|
|
1522 |
__SPIN_UNLOCK_IRQRESTORE(TheTimerQ.iTimerSpinLock,irq);
|
|
1523 |
return rtc*q.iNominalTickPeriod+TInt(ms-lastms-1)*q.iMsTickPeriod;
|
|
1524 |
}
|
|
1525 |
|
|
1526 |
|
|
1527 |
static TInt ExecTimeNowImpl(TTimeK& aUniversalTime, TInt& aUniversalTimeOffset, TBool aSecure)
|
|
1528 |
{
|
|
1529 |
if (aSecure && K::SecureClockStatus != ESecureClockOk)
|
|
1530 |
return KErrNoSecureTime;
|
|
1531 |
|
|
1532 |
TInt off=K::HomeTimeOffsetSeconds;
|
|
1533 |
TTimeK time = aSecure ? Kern::SystemTimeSecure() : Kern::SystemTime();
|
|
1534 |
kumemput32(&aUniversalTime,&time,sizeof(time));
|
|
1535 |
kumemput32(&aUniversalTimeOffset,&off,sizeof(off));
|
|
1536 |
return KErrNone;
|
|
1537 |
}
|
|
1538 |
|
|
1539 |
TInt ExecHandler::TimeNowSecure(TTimeK& aUniversalTime, TInt& aUniversalTimeOffset)
|
|
1540 |
//
|
|
1541 |
// Get the secure system time and universal time offset.
|
|
1542 |
//
|
|
1543 |
{
|
|
1544 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::TimeNowSecure"));
|
|
1545 |
return ExecTimeNowImpl(aUniversalTime, aUniversalTimeOffset, ETrue);
|
|
1546 |
}
|
|
1547 |
|
|
1548 |
TInt ExecHandler::TimeNow(TTimeK& aUniversalTime, TInt& aUniversalTimeOffset)
|
|
1549 |
//
|
|
1550 |
// Get the nonsecure system time and universal time offset.
|
|
1551 |
//
|
|
1552 |
{
|
|
1553 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::TimeNow"));
|
|
1554 |
return ExecTimeNowImpl(aUniversalTime, aUniversalTimeOffset, EFalse);
|
|
1555 |
}
|
|
1556 |
|
|
1557 |
TInt ExecHandler::UTCOffset()
|
|
1558 |
//
|
|
1559 |
// Get the universal time offset in seconds.
|
|
1560 |
//
|
|
1561 |
{
|
|
1562 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::UTCOffset"));
|
|
1563 |
return K::HomeTimeOffsetSeconds;
|
|
1564 |
}
|
|
1565 |
|
|
1566 |
// Call with system unlocked and timer mutex held
|
|
1567 |
TInt K::SetSystemTime(TInt aSecondsFrom2000, TInt aUTCOffset, TUint& aChanges, TUint aMode)
|
|
1568 |
{
|
|
1569 |
__KTRACE_OPT(KEXEC,Kern::Printf("K::SetSystemTime %d %d %d",aSecondsFrom2000,aUTCOffset,aMode));
|
|
1570 |
|
|
1571 |
TTickQ& tq=*K::TickQ;
|
|
1572 |
TSecondQ& sq=*(TSecondQ*)K::SecondQ;
|
|
1573 |
|
|
1574 |
// get current midnight time and UTC offset
|
|
1575 |
Int64 mnt = sq.iMidnight;
|
|
1576 |
TInt old_offset = K::HomeTimeOffsetSeconds;
|
|
1577 |
|
|
1578 |
// set up new offset and tweak midnight for offset change
|
|
1579 |
if (aMode & ETimeSetOffset)
|
|
1580 |
{
|
|
1581 |
aUTCOffset %= 86400; // stop silly offsets crashing the system
|
|
1582 |
mnt += (old_offset - aUTCOffset) * tq.iTicksPerSecond;
|
|
1583 |
}
|
|
1584 |
else
|
|
1585 |
aUTCOffset = old_offset;
|
|
1586 |
|
|
1587 |
// set up new time and check for time reversal
|
|
1588 |
Int64 c;
|
|
1589 |
if (aMode & ETimeSetTime)
|
|
1590 |
{
|
|
1591 |
c=aSecondsFrom2000;
|
|
1592 |
c+=K::Year2000InSeconds;
|
|
1593 |
c*=tq.iTicksPerSecond;
|
|
1594 |
if (c<tq.iRtc && (aMode & ETimeSetAllowTimeReversal) == 0)
|
|
1595 |
return KErrArgument;
|
|
1596 |
}
|
|
1597 |
else
|
|
1598 |
c = tq.iRtc;
|
|
1599 |
|
|
1600 |
// check if we've crossed midnight
|
|
1601 |
if (c>=mnt || c<mnt-sq.iTicksPerDay)
|
|
1602 |
aChanges |= EChangesMidnightCrossover;
|
|
1603 |
|
|
1604 |
// work out local time and round to the next midnight, then back to utc
|
|
1605 |
mnt=(c + aUTCOffset*tq.iTicksPerSecond + sq.iTicksPerDay) / sq.iTicksPerDay * sq.iTicksPerDay - aUTCOffset*tq.iTicksPerSecond;
|
|
1606 |
|
|
1607 |
// update time, next midnight, and offset atomically
|
|
1608 |
TInt irq = __SPIN_LOCK_IRQSAVE(TheTimerQ.iTimerSpinLock);
|
|
1609 |
tq.iRtc=c;
|
|
1610 |
sq.iMidnight=mnt;
|
|
1611 |
K::HomeTimeOffsetSeconds = aUTCOffset;
|
|
1612 |
__SPIN_UNLOCK_IRQRESTORE(TheTimerQ.iTimerSpinLock,irq);
|
|
1613 |
|
|
1614 |
// Cancel timers and note time change
|
|
1615 |
if (aMode & ETimeSetTime)
|
|
1616 |
{
|
|
1617 |
tq.iMsTimer.Cancel();
|
|
1618 |
tq.iMsTimer.iTriggerTime=tq.iLastMs;
|
|
1619 |
tq.iTickDfc.Cancel();
|
|
1620 |
}
|
|
1621 |
if ((aMode & ETimeSetTime) || (old_offset != aUTCOffset && (aMode & ETimeSetNoTimeUpdate) == 0))
|
|
1622 |
{
|
|
1623 |
aChanges |= EChangesSystemTime;
|
|
1624 |
sq.iTimer.DoCancel();
|
|
1625 |
}
|
|
1626 |
|
|
1627 |
return KErrNone;
|
|
1628 |
}
|
|
1629 |
|
|
1630 |
|
|
1631 |
TInt ExecHandler::SetUTCTimeAndOffset(const TTimeK& aHomeTime, TInt aOffsetInSeconds, TUint aMode, TUint aChanges)
|
|
1632 |
{
|
|
1633 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::SetUTCTimeAndOffset"));
|
|
1634 |
|
|
1635 |
if(aChanges != EChangesLocale && !Kern::CurrentThreadHasCapability(ECapabilityWriteDeviceData,__PLATSEC_DIAGNOSTIC_STRING("Checked by User time set function")))
|
|
1636 |
K::UnlockedPlatformSecurityPanic();
|
|
1637 |
|
|
1638 |
// If caller wants to set the secure (hardware) clock then check the process has permission to do that. Also
|
|
1639 |
// check that the nonsecure offset HAL attribute is present, or a secure time cannot be set.
|
|
1640 |
TUint flags = Kern::ETimeSet_SetHwRtc; // all user-mode clock setting APIs need to use this flag. It's only optional for drivers calling Kern::SetSystemTime
|
|
1641 |
if (aMode & ETimeSetSecure)
|
|
1642 |
{
|
|
1643 |
if(!Kern::CurrentThreadHasCapability(ECapabilityTCB,__PLATSEC_DIAGNOSTIC_STRING("Checked by User time set function")))
|
|
1644 |
return KErrPermissionDenied;
|
|
1645 |
if (0 == (K::SecureClockStatus & ESecureClockOffsetPresent))
|
|
1646 |
return KErrNoSecureTime;
|
|
1647 |
aMode &= ~ETimeSetSecure;
|
|
1648 |
flags |= Kern::ETimeSet_Secure;
|
|
1649 |
}
|
|
1650 |
|
|
1651 |
|
|
1652 |
TTimeK hometime;
|
|
1653 |
kumemget32(&hometime, &aHomeTime, sizeof(hometime));
|
|
1654 |
|
|
1655 |
if (aMode & ETimeSetOffset)
|
|
1656 |
{
|
|
1657 |
SLocaleData& ld = TheMachineConfig().iLocale;
|
|
1658 |
NKern::LockSystem();
|
|
1659 |
ld.iUniversalTimeOffset = aOffsetInSeconds;
|
|
1660 |
ld.iDaylightSaving = EDstNone;
|
|
1661 |
NKern::ThreadEnterCS();
|
|
1662 |
NKern::UnlockSystem();
|
|
1663 |
}
|
|
1664 |
else
|
|
1665 |
NKern::ThreadEnterCS();
|
|
1666 |
TUint changes = 0;
|
|
1667 |
TInt r = K::SetSystemTimeAndOffset(hometime, aOffsetInSeconds, flags, changes, aMode);
|
|
1668 |
if (changes & EChangesSystemTime)
|
|
1669 |
{
|
|
1670 |
if (aMode & ETimeSetOffset || aChanges & EChangesLocale)
|
|
1671 |
changes |= EChangesLocale;
|
|
1672 |
__KTRACE_OPT(KEXEC,Kern::Printf("changes=%x",changes));
|
|
1673 |
Kern::NotifyChanges(changes);
|
|
1674 |
}
|
|
1675 |
else if(aChanges & EChangesLocale)
|
|
1676 |
Kern::NotifyChanges(EChangesLocale);
|
|
1677 |
NKern::ThreadLeaveCS();
|
|
1678 |
return r;
|
|
1679 |
}
|
|
1680 |
|
|
1681 |
/**
|
|
1682 |
Updates the software RTC and possibly the hardware RTC.
|
|
1683 |
|
|
1684 |
@param aTime The new time to set, either universal or local
|
|
1685 |
@param aMode Flags as follows (from enum Kern::TTimeSetMode):
|
|
1686 |
ETimeSet_SetHwRtc - set HW as well as SW RTC
|
|
1687 |
ETimeSet_LocalTime - aTime is local time rather than UTC
|
|
1688 |
ETimeSet_SyncNotify - synchronously trigger change notifiers
|
|
1689 |
ETimeSet_AsyncNotify - asynchronously trigger change notifiers
|
|
1690 |
ETimeSet_Secure - set the secure clock
|
|
1691 |
|
|
1692 |
@pre Calling thread must be in a critical section.
|
|
1693 |
@pre Interrupts must be enabled.
|
|
1694 |
@pre Kernel must be unlocked.
|
|
1695 |
@pre No fast mutex can be held.
|
|
1696 |
@pre Call in a thread context.
|
|
1697 |
@pre Can be used in a device driver.
|
|
1698 |
|
|
1699 |
@return KErrNone, if successful;
|
|
1700 |
KErrOverflow, if aTime it outside the representable range, which is
|
|
1701 |
-2^31 to +2^31-1 seconds relative to 00:00:00 01-01-2000
|
|
1702 |
*/
|
|
1703 |
EXPORT_C TInt Kern::SetSystemTime(const TTimeK& aTime, TUint aMode)
|
|
1704 |
{
|
|
1705 |
CHECK_PRECONDITIONS(MASK_THREAD_CRITICAL,"Kern::SetSystemTime");
|
|
1706 |
TUint dummy = 0;
|
|
1707 |
return K::SetSystemTimeAndOffset(aTime, 0, aMode, dummy, ETimeSetTime);
|
|
1708 |
}
|
|
1709 |
|
|
1710 |
|
|
1711 |
|
|
1712 |
TInt K::SetSystemTimeAndOffset(const TTimeK& aTime, TInt aOffset, TUint aTimeSetMode, TUint& aChanges, TUint aMode)
|
|
1713 |
{
|
|
1714 |
TSecondQ& sq = *K::SecondQ;
|
|
1715 |
TTickQ& tq = *K::TickQ;
|
|
1716 |
TTickQ::Wait();
|
|
1717 |
tq.Synchronise();
|
|
1718 |
TInt s = 0;
|
|
1719 |
TInt old = 0;
|
|
1720 |
|
|
1721 |
if (aMode & ETimeSetTime)
|
|
1722 |
{
|
|
1723 |
|
|
1724 |
// Convert the new time parameter to UTC seconds
|
|
1725 |
Int64 oldrtc = tq.iRtc;
|
|
1726 |
TTimeK newTime = aTime;
|
|
1727 |
if ((aTimeSetMode & Kern::ETimeSet_LocalTime) || (aMode & ETimeSetLocalTime))
|
|
1728 |
{
|
|
1729 |
if (aMode & ETimeSetOffset)
|
|
1730 |
newTime -= TTimeK(aOffset)*1000000;
|
|
1731 |
else
|
|
1732 |
newTime -= TTimeK(K::HomeTimeOffsetSeconds)*1000000;
|
|
1733 |
}
|
|
1734 |
K::SecondsFrom2000(oldrtc*tq.iNominalTickPeriod, old);
|
|
1735 |
TInt r = K::SecondsFrom2000(newTime, s);
|
|
1736 |
if (r!=KErrNone)
|
|
1737 |
{
|
|
1738 |
TTickQ::Signal();
|
|
1739 |
return r;
|
|
1740 |
}
|
|
1741 |
|
|
1742 |
|
|
1743 |
// Update secure clock
|
|
1744 |
if (aTimeSetMode & Kern::ETimeSet_Secure)
|
|
1745 |
{
|
|
1746 |
if (aTimeSetMode & Kern::ETimeSet_SetHwRtc)
|
|
1747 |
{
|
|
1748 |
r = A::SetSystemTimeInSecondsFrom2000(s); // Update hardware RTC whether or not secure clock OK (HAL setting present)
|
|
1749 |
if (r!=KErrNone)
|
|
1750 |
{
|
|
1751 |
TTickQ::Signal();
|
|
1752 |
return r;
|
|
1753 |
}
|
|
1754 |
}
|
|
1755 |
K::SecureClockStatus |= ESecureClockPresent; // Flag that a secure time has/is going to be set.
|
|
1756 |
|
|
1757 |
if (K::SecureClockStatus == ESecureClockOk) // i.e. if Nonsecure offset present (if secure clock in use)
|
|
1758 |
{
|
|
1759 |
TInt64 tmp = old;
|
|
1760 |
tmp -= s;
|
|
1761 |
K::NonSecureOffsetSeconds = static_cast<TInt32>(tmp); // i.e. Nonsecure time remains unchanged
|
|
1762 |
s = old; // so the software RTC (set below) remains unchanged nonsecure time
|
|
1763 |
}
|
|
1764 |
}
|
|
1765 |
// Update nonsecure clock
|
|
1766 |
else
|
|
1767 |
// If the secure clock is in working order (i.e. both a secure time source and the
|
|
1768 |
// nonsecure offset are present) then all we have to do is update the nonsecure
|
|
1769 |
// offset. Otherwise (i.e. either secure clock attribute is missing) all we can do
|
|
1770 |
// is update the hardware clock.
|
|
1771 |
if (K::SecureClockStatus == ESecureClockOk)
|
|
1772 |
{
|
|
1773 |
TInt64 tmp = K::NonSecureOffsetSeconds;
|
|
1774 |
tmp += s;
|
|
1775 |
tmp -= old;
|
|
1776 |
K::NonSecureOffsetSeconds = static_cast<TInt32>(tmp);
|
|
1777 |
}
|
|
1778 |
else
|
|
1779 |
{
|
|
1780 |
if (aTimeSetMode & Kern::ETimeSet_SetHwRtc)
|
|
1781 |
{
|
|
1782 |
r = A::SetSystemTimeInSecondsFrom2000(s);
|
|
1783 |
if (r!=KErrNone)
|
|
1784 |
{
|
|
1785 |
TTickQ::Signal();
|
|
1786 |
return r;
|
|
1787 |
}
|
|
1788 |
}
|
|
1789 |
}
|
|
1790 |
}
|
|
1791 |
|
|
1792 |
// Update the software RTC and offset
|
|
1793 |
K::SetSystemTime(s, aOffset, aChanges, aMode|ETimeSetAllowTimeReversal);
|
|
1794 |
|
|
1795 |
// abort locked and absolute timers if the nonsecure time changed
|
|
1796 |
if (aChanges & EChangesSystemTime && !(aTimeSetMode & Kern::ETimeSet_Secure))
|
|
1797 |
AbortTimers(ETrue);
|
|
1798 |
|
|
1799 |
if (aMode & ETimeSetTime)
|
|
1800 |
{
|
|
1801 |
// queue wakeup DFC to restart the timer queues
|
|
1802 |
// if iInTick is already set, wake up DFC is already queued
|
|
1803 |
if (!tq.iInTick)
|
|
1804 |
{
|
|
1805 |
tq.iInTick = ETrue;
|
|
1806 |
sq.iWakeUpDfc.Enque();
|
|
1807 |
}
|
|
1808 |
|
|
1809 |
// tell the power manager
|
|
1810 |
if (K::PowerModel)
|
|
1811 |
K::PowerModel->SystemTimeChanged(old, s);
|
|
1812 |
}
|
|
1813 |
else if (aChanges & EChangesSystemTime)
|
|
1814 |
sq.StartTimer();
|
|
1815 |
|
|
1816 |
TTickQ::Signal();
|
|
1817 |
|
|
1818 |
if (aChanges)
|
|
1819 |
{
|
|
1820 |
if (aTimeSetMode & Kern::ETimeSet_SyncNotify)
|
|
1821 |
Kern::NotifyChanges(aChanges);
|
|
1822 |
else if (aTimeSetMode & Kern::ETimeSet_AsyncNotify)
|
|
1823 |
Kern::AsyncNotifyChanges(aChanges);
|
|
1824 |
}
|
|
1825 |
return KErrNone;
|
|
1826 |
}
|
|
1827 |
|
|
1828 |
|
|
1829 |
TTimerLockSpec ExecHandler::LockPeriod()
|
|
1830 |
{
|
|
1831 |
// NO ONE USES THIS, SO KILL IT
|
|
1832 |
__KTRACE_OPT(KEXEC,Kern::Printf("Exec::LockPeriod"));
|
|
1833 |
return ETwelveOClock;
|
|
1834 |
}
|
|
1835 |
|
|
1836 |
/** Returns the period of the Symbian OS tick timer.
|
|
1837 |
|
|
1838 |
@return Period in microseconds.
|
|
1839 |
|
|
1840 |
@pre Call in any context.
|
|
1841 |
|
|
1842 |
@see TTickLink
|
|
1843 |
*/
|
|
1844 |
|
|
1845 |
EXPORT_C TInt Kern::TickPeriod()
|
|
1846 |
{
|
|
1847 |
return K::TickQ->iNominalTickPeriod;
|
|
1848 |
}
|