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354 lines
8.5 KiB
354 lines
8.5 KiB
/*==LICENSE==* |
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 3 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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Additional permissions under GNU GPL version 3 section 7 |
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If you modify this Program, or any covered work, by linking or |
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
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(or a modified version of those libraries), |
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
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licensors of this Program grant you additional |
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permission to convey the resulting work. Corresponding Source for a |
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non-source form of such a combination shall include the source code for |
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
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work. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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#include "hsTimer.h" |
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#include "HeadSpin.h" |
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#include "hsWindows.h" |
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#include "plTweak.h" |
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// |
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// plTimerShare - the actual worker. All process spaces should share a single |
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// plTimerShare to keep time synchronized across spaces. |
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// |
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plTimerShare::plTimerShare() |
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: fFirstTime(true), |
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fSysSeconds(0), |
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fRealSeconds(0), |
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fDelSysSeconds(0), |
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fFrameTimeInc(0.03f), |
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fSysTimeScale(1.f), |
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fTimeClampSecs(0.1f), |
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fSmoothingClampSecs(-1.0f), |
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fRunningFrameTime(false), |
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fClamping(false), |
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fResetSmooth(true), |
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fCurrSlot(0) |
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{ |
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} |
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plTimerShare::~plTimerShare() |
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{ |
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} |
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double plTimerShare::GetSeconds() const |
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{ |
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hsWide ticks; |
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return hsTimer::GetRawTicks(&ticks)->AsDouble() / hsTimer::GetRawBase().AsDouble(); |
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} |
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double plTimerShare::GetMilliSeconds() const |
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{ |
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return GetSeconds() * 1.e3; |
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} |
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hsWide plTimerShare::DSecondsToRawTicks(double secs) |
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{ |
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hsWide retVal; |
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double ticks = secs * hsTimer::GetRawBase().AsDouble(); |
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double hi = ticks / double(65536) / double(65536); |
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ticks -= hi; |
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retVal.fHi = int32_t(hi); |
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retVal.fLo = int32_t(ticks); |
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return retVal; |
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} |
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double plTimerShare::RawTicksToDSeconds(const hsWide& ticks) |
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{ |
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return ticks.AsDouble() / hsTimer::GetRawBase().AsDouble(); |
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} |
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inline hsWide* plTimerShare::FactorInTimeZero(hsWide* ticks) const |
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{ |
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if( fFirstTime ) |
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{ |
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fFirstTime = false; |
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fRawTimeZero = *ticks; |
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ticks->Set(0, 0); |
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} |
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else |
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{ |
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ticks->Sub(&fRawTimeZero); |
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} |
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return ticks; |
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} |
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double plTimerShare::IncSysSeconds() |
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{ |
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if( fRunningFrameTime ) |
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{ |
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fDelSysSeconds = fFrameTimeInc * fSysTimeScale; |
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fSysSeconds += fDelSysSeconds; |
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fResetSmooth = true; |
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} |
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else if( fSmoothingClampSecs >= 0 ) |
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{ |
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double t = GetSeconds(); |
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float delSys = float(t - fRealSeconds); |
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fClamping = ( (fTimeClampSecs > 0) && (delSys > fTimeClampSecs) ); |
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if (fClamping) |
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{ |
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delSys = fTimeClampSecs; |
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} |
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delSys *= fSysTimeScale; |
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if( fDelSysSeconds > 0 && fDelSysSeconds < fSmoothingClampSecs ) |
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{ |
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const float kFrac = 0.1f; |
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const float kOneMinusFrac = 1.f-kFrac; |
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delSys *= kFrac; |
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delSys += fDelSysSeconds * kOneMinusFrac; |
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} |
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if (delSys > 4.0f && delSys < 5.0f) |
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{ |
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//got that mysterious bug, (Win2k? certain CPU's?) try again... |
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#if HS_BUILD_FOR_WIN32 |
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int count = 10; |
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while( delSys >= fDelSysSeconds * 2 && count > 0 ) |
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{ |
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fRealSeconds = t; |
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t = GetSeconds(); |
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delSys = float(t - fRealSeconds); |
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count--; |
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} |
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#endif |
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} |
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fDelSysSeconds = delSys; |
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fSysSeconds += fDelSysSeconds; |
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fRealSeconds = t; |
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fResetSmooth = true; |
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} |
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else |
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{ |
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double t = GetSeconds(); |
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plCONST(int) kSmoothBuffUsed(kSmoothBuffLen); |
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if( fResetSmooth ) |
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{ |
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int i; |
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for( i = 0; i < kSmoothBuffUsed; i++ ) |
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fSmoothBuff[i] = t; |
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fResetSmooth = false; |
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} |
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if( ++fCurrSlot >= kSmoothBuffUsed ) |
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fCurrSlot = 0; |
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fSmoothBuff[fCurrSlot] = t; |
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double avg = 0; |
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int j; |
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for( j = 0; j < kSmoothBuffUsed; j++ ) |
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{ |
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avg += fSmoothBuff[j]; |
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} |
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avg /= double(kSmoothBuffUsed); |
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plCONST(float) kMaxSmoothable(0.15f); |
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fDelSysSeconds = float(avg - fRealSeconds) * fSysTimeScale; |
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if( fDelSysSeconds > kMaxSmoothable * fSysTimeScale ) |
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{ |
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avg = t; |
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fDelSysSeconds = float(avg - fRealSeconds) * fSysTimeScale; |
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fResetSmooth = true; |
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} |
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fSysSeconds += fDelSysSeconds; |
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fRealSeconds = avg; |
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} |
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return fSysSeconds; |
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} |
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void plTimerShare::SetRealTime(bool realTime) |
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{ |
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fRunningFrameTime = !realTime; |
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if( realTime ) |
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{ |
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fRealSeconds = GetSeconds(); |
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} |
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} |
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#if HS_BUILD_FOR_WIN32 |
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hsWide* plTimerShare::GetRawTicks(hsWide* ticks) const |
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{ |
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LARGE_INTEGER large; |
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if (::QueryPerformanceCounter(&large)) |
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{ |
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ticks->Set(large.HighPart, large.LowPart); |
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} |
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else |
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{ |
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ticks->Set(0, ::GetTickCount()); |
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} |
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return FactorInTimeZero(ticks); |
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} |
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hsWide hsTimer::IInitRawBase() |
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{ |
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hsWide base; |
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LARGE_INTEGER large; |
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if (::QueryPerformanceFrequency(&large)) |
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base.Set(large.HighPart, large.LowPart); |
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else |
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base.Set(0, 1000); |
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return base; |
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} |
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#elif HS_BUILD_FOR_UNIX |
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#include <sys/time.h> |
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#define kMicroSecondsUnit 1000000 |
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static uint32_t gBaseTime = 0; |
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hsWide* plTimerShare::GetRawTicks(hsWide* ticks) const |
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{ |
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timeval tv; |
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(void)::gettimeofday(&tv, nil); |
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if (gBaseTime == 0) |
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gBaseTime = tv.tv_sec; |
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ticks->Mul(tv.tv_sec - gBaseTime, kMicroSecondsUnit)->Add(tv.tv_usec); |
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return ticks; |
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} |
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hsWide hsTimer::IInitRawBase() |
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{ |
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hsWide base; |
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base.Set(0, kMicroSecondsUnit); |
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return base; |
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} |
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#endif |
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// |
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// hsTimer - thin static interface to plTimerShare. Also keeps a couple of |
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// constants. |
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// |
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static plTimerShare staticTimer; |
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plTimerShare* hsTimer::fTimer = &staticTimer; // until overridden. |
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const double hsTimer::fPrecTicksPerSec = hsTimer::GetPrecTicksPerSec(); |
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const hsWide hsTimer::fRawBase = hsTimer::IInitRawBase(); |
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void hsTimer::SetTheTimer(plTimerShare* timer) |
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{ |
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fTimer = timer; |
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} |
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/////////////////////////// |
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// Precision timer routines |
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// These remain as statics |
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// since they are stateless |
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// anyway. |
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/////////////////////////// |
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double hsTimer::GetPrecTicksPerSec() |
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{ |
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#if HS_BUILD_FOR_WIN32 |
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LARGE_INTEGER freq; |
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if( !QueryPerformanceFrequency(&freq) ) |
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{ |
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return 1000.f; |
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} |
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return ((double) freq.LowPart); |
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#endif |
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return 1; |
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} |
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uint32_t hsTimer::GetPrecTickCount() |
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{ |
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#if HS_BUILD_FOR_WIN32 |
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LARGE_INTEGER ti; |
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if( !QueryPerformanceCounter(&ti) ) |
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return GetTickCount(); |
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return ti.LowPart; |
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#else |
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return 1; |
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#endif |
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} |
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uint32_t hsTimer::PrecSecsToTicks(float secs) |
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{ |
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return (uint32_t)(((double)secs) * fPrecTicksPerSec); |
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} |
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double hsTimer::PrecTicksToSecs(uint32_t ticks) |
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{ |
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return ((double)ticks) / fPrecTicksPerSec; |
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} |
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double hsTimer::PrecTicksToHz(uint32_t ticks) |
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{ |
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return fPrecTicksPerSec / ((double)ticks); |
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} |
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uint64_t hsTimer::GetFullTickCount() |
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{ |
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#if HS_BUILD_FOR_WIN32 |
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LARGE_INTEGER ticks; |
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QueryPerformanceCounter(&ticks); |
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return ticks.QuadPart; |
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#else |
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return 0; |
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#endif |
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} |
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float hsTimer::FullTicksToMs(uint64_t ticks) |
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{ |
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#ifdef HS_BUILD_FOR_WIN32 |
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static uint64_t ticksPerTenthMs = 0; |
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if (ticksPerTenthMs == 0) |
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{ |
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LARGE_INTEGER perfFreq; |
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QueryPerformanceFrequency(&perfFreq); |
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ticksPerTenthMs = perfFreq.QuadPart / 10000; |
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} |
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return float(ticks / ticksPerTenthMs) / 10.f; |
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#else |
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return 0.f; |
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#endif |
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}
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