hxsched.cpp
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: hxsched.cpp,v 1.6.20.1 2004/07/09 02:06:33 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hxcom.h"
- #include "hxtypes.h"
- #include "hxresult.h"
- #ifdef _WINDOWS
- #include <windows.h>
- #endif
- #include "timeval.h"
- #include "clientpq.h"
- #include "ihxpckts.h"
- #include "hxfiles.h"
- #include "hxengin.h"
- #include "hxcore.h"
- #include "hxprefs.h"
- #include "timeline.h"
- #include "hxtick.h"
- #ifdef _MACINTOSH
- #include "hx_moreprocesses.h"
- #endif
- #if defined(_WIN32) || defined(THREADS_SUPPORTED)
- #include "casyntim.h"
- #endif /*_WIN32*/
- #include "hxthread.h"
- #include "hxsched.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- #if defined(_WINDOWS) && !defined(_WIN32) /* WIN16 */
- #define MINIMUM_GRANULARITY 55
- #elif defined (_MACINTOSH) /* MACINTOSH */
- #define MINIMUM_GRANULARITY 20
- #elif defined (_UNIX)
- #define MINIMUM_GRANULARITY 20
- #else /* ELSE */
- #define MINIMUM_GRANULARITY 20
- #endif
- #define MINIMUM_DIFFERENCE 5
- // HXScheduler...
- HXScheduler::HXScheduler(IUnknown* pContext) :
- m_lRefCount (0)
- ,m_pScheduler(0)
- ,m_pInterruptTimeScheduler(0)
- ,m_pID(0)
- ,m_pContext(pContext)
- ,m_bLocked(FALSE)
- ,m_bUseDeferredTask(TRUE)
- #if defined(_WIN32) || defined(THREADS_SUPPORTED)
- ,m_pAsyncTimer(0)
- #endif
- ,m_pTimeline(0)
- ,m_ulCurrentGranularity(0)
- ,m_pCoreMutex(NULL)
- ,m_ulLastUpdateTime(0)
- ,m_bIsInterruptEnabled(FALSE)
- ,m_ulSystemNextDueTime(0)
- ,m_ulInterruptNextDueTime(0)
- ,m_headTime(0)
- ,m_interruptHeadTime(0)
- ,m_bImmediatesPending(0)
- {
- m_pID = new CHXID(100);
- m_pScheduler = new ClientPQ(m_pID);
- m_pInterruptTimeScheduler = new ClientPQ(m_pID);
- (void) gettimeofday(&m_CurrentTimeVal, 0);
- m_ulLastUpdateTime = HX_GET_TICKCOUNT();
- }
- HXScheduler::~HXScheduler()
- {
- StopScheduler();
- HX_DELETE(m_pScheduler);
- HX_DELETE(m_pInterruptTimeScheduler);
- HX_DELETE(m_pID);
- #if defined(_WIN32) || defined(THREADS_SUPPORTED)
- HX_DELETE(m_pAsyncTimer);
- #endif
- HX_DELETE(m_pTimeline);
- }
- /*
- * IUnknown methods
- */
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::QueryInterface
- // Purpose:
- // Implement this to export the interfaces supported by your
- // object.
- //
- STDMETHODIMP HXScheduler::QueryInterface(REFIID riid, void** ppvObj)
- {
- #ifdef _MACINTOSH
- if (IsEqualIID(riid, IID_IHXInterruptState) && m_pContext)
- {
- return m_pContext->QueryInterface(riid, ppvObj);
- }
- #endif
- QInterfaceList qiList[] =
- {
- { GET_IIDHANDLE(IID_IHXScheduler), (IHXScheduler*)this },
- { GET_IIDHANDLE(IID_IUnknown), (IUnknown*)(IHXScheduler*)this },
- };
-
- return ::QIFind(qiList, QILISTSIZE(qiList), riid, ppvObj);
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::AddRef
- // Purpose:
- // Everyone usually implements this the same... feel free to use
- // this implementation.
- //
- STDMETHODIMP_(ULONG32) HXScheduler::AddRef()
- {
- return InterlockedIncrement(&m_lRefCount);
- }
- /////////////////////////////////////////////////////////////////////////
- // Method:
- // IUnknown::Release
- // Purpose:
- // Everyone usually implements this the same... feel free to use
- // this implementation.
- //
- STDMETHODIMP_(ULONG32) HXScheduler::Release()
- {
- if (InterlockedDecrement(&m_lRefCount) > 0)
- {
- return m_lRefCount;
- }
- delete this;
- return 0;
- }
- /*
- * HXScheduler methods
- */
- /************************************************************************
- * Method:
- * IHXScheduler::Enter
- * Purpose:
- * enter objects in the service queue
- */
- STDMETHODIMP_(CallbackHandle)
- HXScheduler::RelativeEnter(IHXCallback* pCallback, ULONG32 ulTime)
- {
- /*
- * A RelativeEnter() of 0 ms is a special case that needs to be
- * AbsoluteEnter() of 0
- */
- if (ulTime == 0)
- {
- HXTimeval rVal;
- rVal.tv_sec = rVal.tv_usec = 0;
- return AbsoluteEnter(pCallback, rVal);
- }
- UINT32 usecs = 0;
- UINT32 secs = 0;
- Timeval lTime;
- // handle the possible overflow of UINT32 when
- // converting from milli-second to micro-second
- if (ulTime > 4000000)
- {
- secs = ulTime / 1000;
- usecs = (ulTime % 1000) * 1000;
- }
- else
- {
- secs = 0;
- usecs = ulTime * 1000;
- if (usecs >= 1000000)
- {
- secs = usecs / 1000000;
- usecs = usecs % 1000000;
- }
- }
- lTime.tv_sec = secs;
- lTime.tv_usec = usecs;
- Timeval now;
- now.tv_sec = m_CurrentTimeVal.tv_sec;
- now.tv_usec = m_CurrentTimeVal.tv_usec;
- now += lTime;
-
- if (pCallback)
- {
- IHXInterruptSafe* pInterruptSafeCB = NULL;
- if(HXR_OK == pCallback->QueryInterface(IID_IHXInterruptSafe,
- (void**) &pInterruptSafeCB))
- {
- if (pInterruptSafeCB && pInterruptSafeCB->IsInterruptSafe())
- {
- CallbackHandle hCallback = (CallbackHandle) m_pInterruptTimeScheduler->
- enter(now, pCallback);
- pInterruptSafeCB->Release();
- return hCallback;
- }
- pInterruptSafeCB->Release();
- }
- }
-
- return (CallbackHandle) m_pScheduler->enter(now, pCallback);
- }
- /************************************************************************
- * Method:
- * IHXScheduler::AbsoluteEnter
- * Purpose:
- * enter objects in the service queue at absolute time
- */
- STDMETHODIMP_(CallbackHandle)
- HXScheduler::AbsoluteEnter(IHXCallback* pCallback, HXTimeval tVal)
- {
- Timeval lTime;
- lTime.tv_sec = tVal.tv_sec;
- lTime.tv_usec = tVal.tv_usec;
- if (pCallback)
- {
- IHXInterruptSafe* pInterruptSafeCB = NULL;
- if(HXR_OK == pCallback->QueryInterface(IID_IHXInterruptSafe,
- (void**) &pInterruptSafeCB))
- {
-
- if (pInterruptSafeCB && pInterruptSafeCB->IsInterruptSafe())
- {
- CallbackHandle hCallback = (CallbackHandle) m_pInterruptTimeScheduler->
- enter(lTime, pCallback);
- pInterruptSafeCB->Release();
- return hCallback;
- }
- pInterruptSafeCB->Release();
- }
- }
- return (CallbackHandle) m_pScheduler->enter(lTime, pCallback);
- }
- /************************************************************************
- * Method:
- * IHXScheduler::Remove
- * Purpose:
- * remove objects from the service queue
- */
- STDMETHODIMP HXScheduler::Remove(CallbackHandle Handle)
- {
- if (m_pInterruptTimeScheduler->removeifexists(Handle))
- {
- return HXR_OK;
- }
- m_pScheduler->remove(Handle);
- return HXR_OK;
- }
- /************************************************************************
- * Method:
- * IHXScheduler::GetCurrentSchedulerTime
- * Purpose:
- * gives the current time in the timeline of the scheduler...
- */
- STDMETHODIMP_(HXTimeval) HXScheduler::GetCurrentSchedulerTime(void)
- {
- HXTimeval hxTimeval;
- hxTimeval.tv_sec = m_CurrentTimeVal.tv_sec;
- hxTimeval.tv_usec = m_CurrentTimeVal.tv_usec;
- return hxTimeval;
- }
- /************************************************************************
- * Method:
- * OnTimeSync
- * Purpose:
- * TBD
- *
- */
- HX_RESULT HXScheduler::OnTimeSync(BOOL bAtInterrupt)
- {
- HX_RESULT theErr = HXR_OK;
-
- if (m_pCoreMutex)
- {
- m_pCoreMutex->Lock();
- }
- if (!m_bLocked)
- {
- m_bLocked = TRUE;
- theErr = ExecuteCurrentFunctions (bAtInterrupt);
- m_bLocked = FALSE;
- }
- if (m_pCoreMutex)
- {
- m_pCoreMutex->Unlock();
- }
- return theErr;
- }
- HX_RESULT HXScheduler::ExecuteCurrentFunctions(BOOL bAtInterrupt)
- {
- BOOL bShouldServiceSystem = FALSE;
- BOOL bShouldServiceInterrupt = FALSE;
- BOOL bImmediatesPending = FALSE;
- BOOL bInterruptImmediatesPending = FALSE;
- if (FALSE == UpdateCurrentTime(bAtInterrupt, bShouldServiceSystem, bShouldServiceInterrupt))
- {
- return HXR_OK;
- }
- /* if not at interrupt time, execute interrupt safe &
- * non-interrupt safe tasks
- */
- if( bShouldServiceInterrupt && !m_pInterruptTimeScheduler->empty() )
- {
- m_pInterruptTimeScheduler->execute(m_CurrentTimeVal);
- /*
- * Don't execute more then 100 immediate elements. We don't wanna
- * hold on too long and spin here.
- */
- int count = 0;
- // Keep executing until there are no more zero time elements
- while ((bInterruptImmediatesPending = m_pInterruptTimeScheduler->immediate()) &&
- (count < 100))
- {
- count += m_pInterruptTimeScheduler->execute(m_CurrentTimeVal);
- }
- }
- if (bShouldServiceSystem && !m_pScheduler->empty())
- {
- m_pScheduler->execute(m_CurrentTimeVal);
- /*
- * Don't execute more then 100 immediate elements. We don't wanna
- * hold on too long and spin here.
- */
- int count = 0;
- // Keep executing until there are no more zero time elements
- while ((bImmediatesPending = m_pScheduler->immediate()) &&
- (count < 100))
- {
- count += m_pScheduler->execute(m_CurrentTimeVal);
- }
- #if defined(_WIN32) || defined(THREADS_SUPPORTED)
- BOOL bChange = FALSE;
- if (m_pScheduler->empty())
- {
- if (m_ulCurrentGranularity < MINIMUM_GRANULARITY &&
- (MINIMUM_GRANULARITY - m_ulCurrentGranularity >=
- MINIMUM_DIFFERENCE))
- {
- bChange = TRUE;
- m_ulCurrentGranularity = MINIMUM_GRANULARITY;
- }
- }
- else if (m_ulCurrentGranularity > MINIMUM_DIFFERENCE)
- {
- Timeval timeout = m_pScheduler->head_time() - m_CurrentTimeVal;
- INT32 lTimeoutInMs;
-
- if (timeout.tv_sec >= 0)
- {
- lTimeoutInMs = timeout.tv_sec * 1000 +
- timeout.tv_usec / 1000;
- }
- else
- {
- lTimeoutInMs = 0;
- }
- if (lTimeoutInMs > 0 &&
- (UINT32) lTimeoutInMs < m_ulCurrentGranularity &&
- (m_ulCurrentGranularity - (UINT32) lTimeoutInMs >=
- MINIMUM_DIFFERENCE))
- {
- bChange = TRUE;
- m_ulCurrentGranularity = (UINT32) ((lTimeoutInMs >= MINIMUM_DIFFERENCE ?
- lTimeoutInMs: MINIMUM_DIFFERENCE));
- }
- }
- if (bChange)
- {
- m_pTimeline->Pause();
- /* Reset the granularity */
- m_pTimeline->SetGranularity(m_ulCurrentGranularity);
- /* Resume */
- m_pTimeline->Resume();
- }
- #endif /*_WIN32*/
- }
- m_bImmediatesPending = bImmediatesPending || bInterruptImmediatesPending;
- Timeval timeout;
- if (!m_pScheduler->empty())
- {
- timeout = m_pScheduler->head_time() - m_CurrentTimeVal;
- if (timeout.tv_sec >= 0)
- {
- m_ulSystemNextDueTime = (UINT32) (timeout.tv_sec*1000+timeout.tv_usec/1000);
- }
- else
- {
- m_ulSystemNextDueTime = 0;
- }
- }
- else
- {
- m_ulSystemNextDueTime = m_ulCurrentGranularity;
- }
- if (!m_pInterruptTimeScheduler->empty())
- {
- timeout = m_pInterruptTimeScheduler->head_time() - m_CurrentTimeVal;
-
- if (timeout.tv_sec >= 0)
- {
- m_ulInterruptNextDueTime = (UINT32) (timeout.tv_sec*1000+timeout.tv_usec/1000);
- }
- else
- {
- m_ulInterruptNextDueTime = 0;
- }
- }
- else
- {
- m_ulInterruptNextDueTime = m_ulCurrentGranularity;
- }
- return HXR_OK;
- }
- BOOL HXScheduler::IsEmpty()
- {
- return (m_pScheduler->empty() && m_pInterruptTimeScheduler->empty());
- }
- BOOL HXScheduler::GetNextEventDueTimeDiff(ULONG32 &ulEarliestDueTimeDiff)
- {
- if (m_pScheduler->empty() && m_pInterruptTimeScheduler->empty())
- return FALSE;
- Timeval nextDueTime;
- Timeval now;
- now.tv_sec = m_CurrentTimeVal.tv_sec;
- now.tv_usec = m_CurrentTimeVal.tv_usec;
- if (m_pScheduler->empty())
- {
- nextDueTime = m_pInterruptTimeScheduler->head_time();
- }
- else if (m_pInterruptTimeScheduler->empty())
- {
- nextDueTime = m_pScheduler->head_time();
- }
- else
- {
- if (m_pInterruptTimeScheduler->head_time() < m_pScheduler->head_time())
- {
- nextDueTime = m_pInterruptTimeScheduler->head_time();
- }
- else
- {
- nextDueTime = m_pScheduler->head_time();
- }
- }
- if (nextDueTime > now)
- {
- nextDueTime -= now;
- }
- else
- {
- nextDueTime = 0.0;
- }
- ulEarliestDueTimeDiff = (ULONG32) ( nextDueTime.tv_sec*1000 +
- nextDueTime.tv_usec/1000);
- return TRUE;
- }
- HX_RESULT HXScheduler::StartScheduler()
- {
- return StartSchedulerImplementation(FALSE);
- }
- HX_RESULT HXScheduler::StartSchedulerTimerFixup()
- {
- return StartSchedulerImplementation(TRUE);
- }
- HX_RESULT HXScheduler::StartSchedulerImplementation(BOOL TimerFixup)
- {
- HX_RESULT theErr = HXR_OK;
- /* Stop any already running scheduler*/
- StopScheduler();
- (void) gettimeofday((Timeval*)&m_CurrentTimeVal, 0);
- m_ulLastUpdateTime = HX_GET_TICKCOUNT();
- #if defined(_WIN32) || defined(THREADS_SUPPORTED)
- if (m_bIsInterruptEnabled)
- {
- if (!m_pAsyncTimer)
- {
- m_pAsyncTimer = new CAsyncTimer(this);
- }
- if (!m_pAsyncTimer)
- {
- return HXR_OUTOFMEMORY;
- }
- m_pAsyncTimer->SetGranularity(MINIMUM_GRANULARITY);
- theErr = m_pAsyncTimer->StartTimer();
- }
- #endif // _WIN32 || THREADS_SUPPORTED
- if (!m_pTimeline)
- {
- m_pTimeline = new Timeline;
- }
- if (m_pTimeline)
- {
- m_pTimeline->Init( (IUnknown*) (IHXScheduler*) this, m_bUseDeferredTask);
- #if defined(_MACINTOSH) && defined(THREADS_SUPPORTED)
- m_pTimeline->SetCoreMutex(m_pCoreMutex);
- #endif
- m_pTimeline->SetStartTime(0);
- m_ulCurrentGranularity = MINIMUM_GRANULARITY;
- m_pTimeline->SetGranularity(m_ulCurrentGranularity);
- if (TimerFixup)
- m_pTimeline->SetTimerFixup(TRUE);
- m_pTimeline->Resume();
- }
- else
- {
- theErr = HXR_OUTOFMEMORY;
- }
- return theErr;
- }
- void HXScheduler::StopScheduler()
- {
- #if defined(_WIN32) || defined(THREADS_SUPPORTED)
- if (m_pAsyncTimer)
- {
- m_pAsyncTimer->StopTimer();
- }
- #endif
- if (m_pTimeline)
- {
- m_pTimeline->Pause();
- m_pTimeline->Done();
- }
- }
- BOOL HXScheduler::IsAtInterruptTime(void)
- {
- #ifdef _MACINTOSH
- return !IsMacInCooperativeThread();
- #elif defined (_WIN32) || defined(THREADS_SUPPORTED)
- return (m_bIsInterruptEnabled &&
- m_pAsyncTimer->InTimerThread());
- #endif
- return FALSE;
- }
- BOOL HXScheduler::UpdateCurrentTime(BOOL bAtInterrupt, BOOL& bShouldServiceSystem,
- BOOL& bShouldServiceInterrupt)
- {
- BOOL bResult = TRUE;
- #if defined(_WINDOWS) || defined(_WIN32) || defined (_MACINTOSH) || defined(THREADS_SUPPORTED)
- UINT32 ulCurrentTime = HX_GET_TICKCOUNT();
- UINT32 ulElapsedTime = CALCULATE_ELAPSED_TICKS(m_ulLastUpdateTime, ulCurrentTime);
- // UINT32 ulCurrentTimeBetter = HX_GET_BETTERTICKCOUNT();
- //{FILE* f1 = ::fopen("d:\temp\better.txt", "a+"); ::fprintf(f1, "Diff %lu %lu %lu %lun", ulCurrentTime, ulCurrentTimeBetter, ulElapsedTime, CALCULATE_ELAPSED_TICKS(ulCurrentTimeBetter, ulCurrentTime));::fclose(f1);}
- if (ulElapsedTime >= m_ulInterruptNextDueTime)
- {
- bShouldServiceInterrupt = TRUE;
- }
- if (!bAtInterrupt &&
- ulElapsedTime >= m_ulSystemNextDueTime)
- {
- bShouldServiceSystem = TRUE;
- }
- //{FILE* f1 = ::fopen("d:\temp\pq.txt", "a+"); ::fprintf(f1, "nUpdateCurrentTime %d %lu", m_ulCoreThreadID == GetCurrentThreadId(), CALCULATE_ELAPSED_TICKS(m_ulLastUpdateTime, ulCurrentTime));::fclose(f1);}
- if (bShouldServiceSystem || bShouldServiceInterrupt)
- {
- m_CurrentTimeVal += (1000 * ulElapsedTime);
- m_ulLastUpdateTime = ulCurrentTime;
- }
- #else
- if (!bAtInterrupt)
- {
- bShouldServiceSystem = TRUE;
- }
- bShouldServiceInterrupt = TRUE;
- (void) gettimeofday(&m_CurrentTimeVal, 0);
- #endif
- if (!(bShouldServiceSystem || bShouldServiceInterrupt))
- {
- bResult = FALSE;
- if (!m_pScheduler->empty() &&
- m_pScheduler->head_time() != m_headTime)
- {
- m_headTime = m_pScheduler->head_time();
- bResult = TRUE;
- }
-
- if (!m_pInterruptTimeScheduler->empty() &&
- m_pInterruptTimeScheduler->head_time() != m_interruptHeadTime)
- {
- m_interruptHeadTime = m_pInterruptTimeScheduler->head_time();
- bResult = TRUE;
- }
- }
- return bResult;
- }
- void HXScheduler::NotifyPlayState(BOOL bInPlayingState)
- {
- #if defined(_WIN32) || defined(THREADS_SUPPORTED)
- if (m_pAsyncTimer)
- {
- m_pAsyncTimer->NotifyPlayState(bInPlayingState);
- }
- #endif
- }