| /************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| |
| |
| // MARKER(update_precomp.py): autogen include statement, do not remove |
| #include "precompiled_canvas.hxx" |
| |
| #include "osl/time.h" |
| #include "osl/diagnose.h" |
| #include "canvas/elapsedtime.hxx" |
| |
| #if defined(WNT) |
| |
| #if defined _MSC_VER |
| #pragma warning(push,1) |
| #endif |
| |
| // TEMP!!! |
| // Awaiting corresponding functionality in OSL |
| // |
| #define WIN32_LEAN_AND_MEAN |
| #include <windows.h> |
| #include <winbase.h> |
| #include <mmsystem.h> |
| #endif |
| |
| #if defined _MSC_VER |
| #pragma warning(pop) |
| #endif |
| |
| #include <algorithm> |
| #include <limits> |
| |
| namespace canvas { |
| namespace tools { |
| |
| |
| #if defined(WNT) |
| // TODO(Q2): is 0 okay for the failure case here? |
| double ElapsedTime::getSystemTime() |
| { |
| // TEMP!!! |
| // Awaiting corresponding functionality in OSL |
| // |
| |
| // is there a performance counter available? |
| static bool bTimeSetupDone( false ); |
| static bool bPerfTimerAvailable( false ); |
| static LONGLONG nPerfCountFreq; |
| |
| // TODO(F1): This _might_ cause problems, as it prevents correct |
| // time handling for very long lifetimes of this class's |
| // surrounding component in memory. When the difference between |
| // current sys time and nInitialCount exceeds IEEE double's |
| // mantissa, time will start to run jerky. |
| static LONGLONG nInitialCount; |
| |
| if( !bTimeSetupDone ) |
| { |
| if( QueryPerformanceFrequency( |
| reinterpret_cast<LARGE_INTEGER *>(&nPerfCountFreq) ) ) |
| { |
| // read initial time: |
| QueryPerformanceCounter( |
| reinterpret_cast<LARGE_INTEGER *>(&nInitialCount) ); |
| bPerfTimerAvailable = true; |
| } |
| bTimeSetupDone = true; |
| } |
| |
| if( bPerfTimerAvailable ) |
| { |
| LONGLONG nCurrCount; |
| QueryPerformanceCounter( |
| reinterpret_cast<LARGE_INTEGER *>(&nCurrCount) ); |
| nCurrCount -= nInitialCount; |
| return double(nCurrCount) / nPerfCountFreq; |
| } |
| else |
| { |
| LONGLONG nCurrTime = timeGetTime(); |
| return double(nCurrTime) / 1000.0; |
| } |
| } |
| |
| #else // ! WNT |
| |
| // TODO(Q2): is 0 okay for the failure case here? |
| double ElapsedTime::getSystemTime() |
| { |
| TimeValue aTimeVal; |
| if( osl_getSystemTime( &aTimeVal ) ) |
| return ((aTimeVal.Nanosec * 10e-10) + aTimeVal.Seconds); |
| else |
| return 0.0; |
| } |
| |
| #endif |
| |
| ElapsedTime::ElapsedTime() |
| : m_pTimeBase(), |
| m_fLastQueriedTime( 0.0 ), |
| m_fStartTime( getSystemTime() ), |
| m_fFrozenTime( 0.0 ), |
| m_bInPauseMode( false ), |
| m_bInHoldMode( false ) |
| { |
| } |
| |
| ElapsedTime::ElapsedTime( |
| boost::shared_ptr<ElapsedTime> const & pTimeBase ) |
| : m_pTimeBase( pTimeBase ), |
| m_fLastQueriedTime( 0.0 ), |
| m_fStartTime( getCurrentTime() ), |
| m_fFrozenTime( 0.0 ), |
| m_bInPauseMode( false ), |
| m_bInHoldMode( false ) |
| { |
| } |
| |
| boost::shared_ptr<ElapsedTime> const & ElapsedTime::getTimeBase() const |
| { |
| return m_pTimeBase; |
| } |
| |
| void ElapsedTime::reset() |
| { |
| m_fLastQueriedTime = 0.0; |
| m_fStartTime = getCurrentTime(); |
| m_fFrozenTime = 0.0; |
| m_bInPauseMode = false; |
| m_bInHoldMode = false; |
| } |
| |
| void ElapsedTime::adjustTimer( double fOffset, bool /*bLimitToLastQueriedTime*/ ) |
| { |
| // to make getElapsedTime() become _larger_, have to reduce |
| // m_fStartTime. |
| m_fStartTime -= fOffset; |
| |
| // also adjust frozen time, this method must _always_ affect the |
| // value returned by getElapsedTime()! |
| if (m_bInHoldMode || m_bInPauseMode) |
| m_fFrozenTime += fOffset; |
| } |
| |
| double ElapsedTime::getCurrentTime() const |
| { |
| return m_pTimeBase.get() == 0 |
| ? getSystemTime() : m_pTimeBase->getElapsedTimeImpl(); |
| } |
| |
| double ElapsedTime::getElapsedTime() const |
| { |
| m_fLastQueriedTime = getElapsedTimeImpl(); |
| return m_fLastQueriedTime; |
| } |
| |
| double ElapsedTime::getElapsedTimeImpl() const |
| { |
| if (m_bInHoldMode || m_bInPauseMode) |
| return m_fFrozenTime; |
| |
| return getCurrentTime() - m_fStartTime; |
| } |
| |
| void ElapsedTime::pauseTimer() |
| { |
| m_fFrozenTime = getElapsedTimeImpl(); |
| m_bInPauseMode = true; |
| } |
| |
| void ElapsedTime::continueTimer() |
| { |
| m_bInPauseMode = false; |
| |
| // stop pausing, time runs again. Note that |
| // getElapsedTimeImpl() honors hold mode, i.e. a |
| // continueTimer() in hold mode will preserve the latter |
| const double fPauseDuration( getElapsedTimeImpl() - m_fFrozenTime ); |
| |
| // adjust start time, such that subsequent getElapsedTime() calls |
| // will virtually start from m_fFrozenTime. |
| m_fStartTime += fPauseDuration; |
| } |
| |
| void ElapsedTime::holdTimer() |
| { |
| // when called during hold mode (e.g. more than once per time |
| // object), the original hold time will be maintained. |
| m_fFrozenTime = getElapsedTimeImpl(); |
| m_bInHoldMode = true; |
| } |
| |
| void ElapsedTime::releaseTimer() |
| { |
| m_bInHoldMode = false; |
| } |
| |
| } // namespace tools |
| } // namespace canvas |