diff options
Diffstat (limited to 'indra/llcommon/llframetimer.h')
| -rw-r--r-- | indra/llcommon/llframetimer.h | 218 |
1 files changed, 109 insertions, 109 deletions
diff --git a/indra/llcommon/llframetimer.h b/indra/llcommon/llframetimer.h index 81bd5da8a3..876d933fd1 100644 --- a/indra/llcommon/llframetimer.h +++ b/indra/llcommon/llframetimer.h @@ -1,4 +1,4 @@ -/** +/** * @file llframetimer.h * @brief A lightweight timer that measures seconds and is only * updated once per frame. @@ -6,21 +6,21 @@ * $LicenseInfo:firstyear=2002&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. - * + * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. - * + * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. - * + * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * + * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ @@ -36,113 +36,113 @@ #include "lltimer.h" -class LL_COMMON_API LLFrameTimer +class LL_COMMON_API LLFrameTimer { public: - LLFrameTimer() : mStartTime( sFrameTime ), mExpiry(0), mStarted(TRUE) {} + LLFrameTimer() : mStartTime( sFrameTime ), mExpiry(0), mStarted(TRUE) {} - // Return the number of seconds since the start of this - // application instance. - static F64SecondsImplicit getElapsedSeconds() - { - // Loses msec precision after ~4.5 hours... - return sFrameTime; - } - - // Return a low precision usec since epoch - static U64 getTotalTime() - { - return sTotalTime ? U64MicrosecondsImplicit(sTotalTime) : totalTime(); - } - - // Return a low precision seconds since epoch - static F64 getTotalSeconds() - { - return sTotalSeconds; - } - - // Call this method once per frame to update the current frame time. This is actually called - // at some other times as well - static void updateFrameTime(); - - // Call this method once, and only once, per frame to update the current frame count. - static void updateFrameCount() { sFrameCount++; } - - static U32 getFrameCount() { return sFrameCount; } - - static F32 getFrameDeltaTimeF32(); - - // Return seconds since the current frame started - static F32 getCurrentFrameTime(); - - // MANIPULATORS - void start(); - void stop(); - void reset(); - void resetWithExpiry(F32 expiration); - void pause(); - void unpause(); - void setTimerExpirySec(F32 expiration); - void setExpiryAt(F64 seconds_since_epoch); - BOOL checkExpirationAndReset(F32 expiration); - F32 getElapsedTimeAndResetF32() { F32 t = F32(sFrameTime - mStartTime); reset(); return t; } - - void setAge(const F64 age) { mStartTime = sFrameTime - age; } - - // ACCESSORS - BOOL hasExpired() const { return (sFrameTime >= mExpiry); } - F32 getTimeToExpireF32() const { return (F32)(mExpiry - sFrameTime); } - F32 getElapsedTimeF32() const { return mStarted ? (F32)(sFrameTime - mStartTime) : (F32)mStartTime; } - BOOL getStarted() const { return mStarted; } - - // return the seconds since epoch when this timer will expire. - F64 expiresAt() const; - -protected: - // A single, high resolution timer that drives all LLFrameTimers - // *NOTE: no longer used. - //static LLTimer sInternalTimer; - - // - // Aplication constants - // - - // Start time of opp in usec since epoch - static U64 sStartTotalTime; - - // - // Data updated per frame - // - - // Seconds since application start - static F64 sFrameTime; - - // Time that has elapsed since last call to updateFrameTime() - static U64 sFrameDeltaTime; - - // Total microseconds since epoch. - static U64 sTotalTime; - - // Seconds since epoch. - static F64 sTotalSeconds; - - // Total number of frames elapsed in application - static S32 sFrameCount; - - // - // Member data - // - - // Number of seconds after application start when this timer was - // started. Set equal to sFrameTime when reset. - F64 mStartTime; - - // Timer expires this many seconds after application start time. - F64 mExpiry; - - // Useful bit of state usually associated with timers, but does - // not affect actual functionality - BOOL mStarted; + // Return the number of seconds since the start of this + // application instance. + static F64SecondsImplicit getElapsedSeconds() + { + // Loses msec precision after ~4.5 hours... + return sFrameTime; + } + + // Return a low precision usec since epoch + static U64 getTotalTime() + { + return sTotalTime ? U64MicrosecondsImplicit(sTotalTime) : totalTime(); + } + + // Return a low precision seconds since epoch + static F64 getTotalSeconds() + { + return sTotalSeconds; + } + + // Call this method once per frame to update the current frame time. This is actually called + // at some other times as well + static void updateFrameTime(); + + // Call this method once, and only once, per frame to update the current frame count. + static void updateFrameCount() { sFrameCount++; } + + static U32 getFrameCount() { return sFrameCount; } + + static F32 getFrameDeltaTimeF32(); + + // Return seconds since the current frame started + static F32 getCurrentFrameTime(); + + // MANIPULATORS + void start(); + void stop(); + void reset(); + void resetWithExpiry(F32 expiration); + void pause(); + void unpause(); + void setTimerExpirySec(F32 expiration); + void setExpiryAt(F64 seconds_since_epoch); + BOOL checkExpirationAndReset(F32 expiration); + F32 getElapsedTimeAndResetF32() { F32 t = F32(sFrameTime - mStartTime); reset(); return t; } + + void setAge(const F64 age) { mStartTime = sFrameTime - age; } + + // ACCESSORS + BOOL hasExpired() const { return (sFrameTime >= mExpiry); } + F32 getTimeToExpireF32() const { return (F32)(mExpiry - sFrameTime); } + F32 getElapsedTimeF32() const { return mStarted ? (F32)(sFrameTime - mStartTime) : (F32)mStartTime; } + BOOL getStarted() const { return mStarted; } + + // return the seconds since epoch when this timer will expire. + F64 expiresAt() const; + +protected: + // A single, high resolution timer that drives all LLFrameTimers + // *NOTE: no longer used. + //static LLTimer sInternalTimer; + + // + // Aplication constants + // + + // Start time of opp in usec since epoch + static U64 sStartTotalTime; + + // + // Data updated per frame + // + + // Seconds since application start + static F64 sFrameTime; + + // Time that has elapsed since last call to updateFrameTime() + static U64 sFrameDeltaTime; + + // Total microseconds since epoch. + static U64 sTotalTime; + + // Seconds since epoch. + static F64 sTotalSeconds; + + // Total number of frames elapsed in application + static S32 sFrameCount; + + // + // Member data + // + + // Number of seconds after application start when this timer was + // started. Set equal to sFrameTime when reset. + F64 mStartTime; + + // Timer expires this many seconds after application start time. + F64 mExpiry; + + // Useful bit of state usually associated with timers, but does + // not affect actual functionality + BOOL mStarted; }; // Glue code for Havok (or anything else that doesn't want the full .h files) |