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-rw-r--r--indra/llcommon/llfasttimer.h371
1 files changed, 104 insertions, 267 deletions
diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h
index 85c78198dc..48461df6ae 100644
--- a/indra/llcommon/llfasttimer.h
+++ b/indra/llcommon/llfasttimer.h
@@ -1,11 +1,11 @@
-/**
+/**
* @file llfasttimer.h
- * @brief Declaration of a fast timer.
+ * @brief Inline implementations of fast timers.
*
* $LicenseInfo:firstyear=2004&license=viewergpl$
- *
+ *
* Copyright (c) 2004-2009, Linden Research, Inc.
- *
+ *
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
@@ -13,17 +13,17 @@
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
+ *
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
+ *
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
- *
+ *
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
@@ -33,297 +33,134 @@
#ifndef LL_FASTTIMER_H
#define LL_FASTTIMER_H
-#include "llinstancetracker.h"
-
-#define FAST_TIMER_ON 1
-#define TIME_FAST_TIMERS 0
+// pull in the actual class definition
+#include "llfasttimer_class.h"
#if LL_WINDOWS
+//
+// Windows implementation of CPU clock
+//
+
+//
+// NOTE: put back in when we aren't using platform sdk anymore
+//
// because MS has different signatures for these functions in winnt.h
// need to rename them to avoid conflicts
-#define _interlockedbittestandset _renamed_interlockedbittestandset
-#define _interlockedbittestandreset _renamed_interlockedbittestandreset
-#include <intrin.h>
-#undef _interlockedbittestandset
-#undef _interlockedbittestandreset
+//#define _interlockedbittestandset _renamed_interlockedbittestandset
+//#define _interlockedbittestandreset _renamed_interlockedbittestandreset
+//#include <intrin.h>
+//#undef _interlockedbittestandset
+//#undef _interlockedbittestandreset
+
+//inline U32 LLFastTimer::getCPUClockCount32()
+//{
+// U64 time_stamp = __rdtsc();
+// return (U32)(time_stamp >> 8);
+//}
+//
+//// return full timer value, *not* shifted by 8 bits
+//inline U64 LLFastTimer::getCPUClockCount64()
+//{
+// return __rdtsc();
+//}
-#define LL_INLINE __forceinline
// shift off lower 8 bits for lower resolution but longer term timing
// on 1Ghz machine, a 32-bit word will hold ~1000 seconds of timing
-inline U32 get_cpu_clock_count_32()
+inline U32 LLFastTimer::getCPUClockCount32()
{
- U64 time_stamp = __rdtsc();
- return (U32)(time_stamp >> 8);
+ U32 ret_val;
+ __asm
+ {
+ _emit 0x0f
+ _emit 0x31
+ shr eax,8
+ shl edx,24
+ or eax, edx
+ mov dword ptr [ret_val], eax
+ }
+ return ret_val;
}
// return full timer value, *not* shifted by 8 bits
-inline U64 get_cpu_clock_count_64()
+inline U64 LLFastTimer::getCPUClockCount64()
{
- return __rdtsc();
+ U64 ret_val;
+ __asm
+ {
+ _emit 0x0f
+ _emit 0x31
+ mov eax,eax
+ mov edx,edx
+ mov dword ptr [ret_val+4], edx
+ mov dword ptr [ret_val], eax
+ }
+ return ret_val;
}
-#else
-#define LL_INLINE
-#endif // LL_WINDOWS
+#endif
-#if (LL_LINUX || LL_SOLARIS || LL_DARWIN) && (defined(__i386__) || defined(__amd64__))
-inline U32 get_cpu_clock_count_32()
-{
- U64 x;
- __asm__ volatile (".byte 0x0f, 0x31": "=A"(x));
- return (U32)x >> 8;
+
+#if LL_LINUX || LL_SOLARIS
+//
+// Linux and Solaris implementation of CPU clock - all architectures.
+//
+// Try to use the MONOTONIC clock if available, this is a constant time counter
+// with nanosecond resolution (but not necessarily accuracy) and attempts are made
+// to synchronize this value between cores at kernel start. It should not be affected
+// by CPU frequency. If not available use the REALTIME clock, but this may be affected by
+// NTP adjustments or other user activity affecting the system time.
+inline U64 LLFastTimer::getCPUClockCount64()
+{
+ struct timespec tp;
+
+#ifdef CLOCK_MONOTONIC // MONOTONIC supported at build-time?
+ if (-1 == clock_gettime(CLOCK_MONOTONIC,&tp)) // if MONOTONIC isn't supported at runtime then ouch, try REALTIME
+#endif
+ clock_gettime(CLOCK_REALTIME,&tp);
+
+ return (tp.tv_sec*LLFastTimer::sClockResolution)+tp.tv_nsec;
}
-inline U32 get_cpu_clock_count_64()
-{
+inline U32 LLFastTimer::getCPUClockCount32()
+{
+ return (U32)(LLFastTimer::getCPUClockCount64() >> 8);
+}
+#endif // (LL_LINUX || LL_SOLARIS))
+
+
+#if (LL_DARWIN) && (defined(__i386__) || defined(__amd64__))
+//
+// Mac x86 implementation of CPU clock
+inline U32 LLFastTimer::getCPUClockCount32()
+{
+ U64 x;
+ __asm__ volatile (".byte 0x0f, 0x31": "=A"(x));
+ return (U32)(x >> 8);
+}
+
+inline U64 LLFastTimer::getCPUClockCount64()
+{
U64 x;
__asm__ volatile (".byte 0x0f, 0x31": "=A"(x));
return x;
}
#endif
-#if ( LL_DARWIN && !(defined(__i386__) || defined(__amd64__))) || (LL_SOLARIS && defined(__sparc__))
+
+#if ( LL_DARWIN && !(defined(__i386__) || defined(__amd64__)))
//
-// Mac PPC (deprecated) & Solaris SPARC implementation of CPU clock
+// Mac PPC (deprecated) implementation of CPU clock
//
// Just use gettimeofday implementation for now
-inline U32 get_cpu_clock_count_32()
+inline U32 LLFastTimer::getCPUClockCount32()
{
- return (U32)get_clock_count();
+ return (U32)(get_clock_count()>>8);
}
-inline U32 get_cpu_clock_count_64()
-{
+inline U64 LLFastTimer::getCPUClockCount64()
+{
return get_clock_count();
}
#endif
-class LLMutex;
-
-#include <queue>
-#include "llsd.h"
-
-class LL_COMMON_API LLFastTimer
-{
-public:
-
- class NamedTimer;
-
- struct LL_COMMON_API FrameState
- {
- FrameState(NamedTimer* timerp);
-
- U32 mSelfTimeCounter;
- U32 mCalls;
- FrameState* mParent; // info for caller timer
- FrameState* mLastCaller; // used to bootstrap tree construction
- NamedTimer* mTimer;
- U16 mActiveCount; // number of timers with this ID active on stack
- bool mMoveUpTree; // needs to be moved up the tree of timers at the end of frame
- };
-
- // stores a "named" timer instance to be reused via multiple LLFastTimer stack instances
- class LL_COMMON_API NamedTimer
- : public LLInstanceTracker<NamedTimer>
- {
- friend class DeclareTimer;
- public:
- ~NamedTimer();
-
- enum { HISTORY_NUM = 60 };
-
- const std::string& getName() const { return mName; }
- NamedTimer* getParent() const { return mParent; }
- void setParent(NamedTimer* parent);
- S32 getDepth();
- std::string getToolTip(S32 history_index = -1);
-
- typedef std::vector<NamedTimer*>::const_iterator child_const_iter;
- child_const_iter beginChildren();
- child_const_iter endChildren();
- std::vector<NamedTimer*>& getChildren();
-
- void setCollapsed(bool collapsed) { mCollapsed = collapsed; }
- bool getCollapsed() const { return mCollapsed; }
-
- U32 getCountAverage() const { return mCountAverage; }
- U32 getCallAverage() const { return mCallAverage; }
-
- U32 getHistoricalCount(S32 history_index = 0) const;
- U32 getHistoricalCalls(S32 history_index = 0) const;
-
- static NamedTimer& getRootNamedTimer();
-
- S32 getFrameStateIndex() const { return mFrameStateIndex; }
-
- FrameState& getFrameState() const;
-
- private:
- friend class LLFastTimer;
- friend class NamedTimerFactory;
-
- //
- // methods
- //
- NamedTimer(const std::string& name);
- // recursive call to gather total time from children
- static void accumulateTimings();
-
- // updates cumulative times and hierarchy,
- // can be called multiple times in a frame, at any point
- static void processTimes();
-
- static void buildHierarchy();
- static void resetFrame();
- static void reset();
-
- //
- // members
- //
- S32 mFrameStateIndex;
-
- std::string mName;
-
- U32 mTotalTimeCounter;
-
- U32 mCountAverage;
- U32 mCallAverage;
-
- U32* mCountHistory;
- U32* mCallHistory;
-
- // tree structure
- NamedTimer* mParent; // NamedTimer of caller(parent)
- std::vector<NamedTimer*> mChildren;
- bool mCollapsed; // don't show children
- bool mNeedsSorting; // sort children whenever child added
- };
-
- // used to statically declare a new named timer
- class LL_COMMON_API DeclareTimer
- : public LLInstanceTracker<DeclareTimer>
- {
- friend class LLFastTimer;
- public:
- DeclareTimer(const std::string& name, bool open);
- DeclareTimer(const std::string& name);
-
- static void updateCachedPointers();
-
- private:
- NamedTimer& mTimer;
- FrameState* mFrameState;
- };
-
-public:
- LLFastTimer(LLFastTimer::FrameState* state);
-
- LL_INLINE LLFastTimer(LLFastTimer::DeclareTimer& timer)
- : mFrameState(timer.mFrameState)
- {
-#if TIME_FAST_TIMERS
- U64 timer_start = get_cpu_clock_count_64();
-#endif
-#if FAST_TIMER_ON
- LLFastTimer::FrameState* frame_state = mFrameState;
- mStartTime = get_cpu_clock_count_32();
-
- frame_state->mActiveCount++;
- frame_state->mCalls++;
- // keep current parent as long as it is active when we are
- frame_state->mMoveUpTree |= (frame_state->mParent->mActiveCount == 0);
-
- LLFastTimer::CurTimerData* cur_timer_data = &LLFastTimer::sCurTimerData;
- mLastTimerData = *cur_timer_data;
- cur_timer_data->mCurTimer = this;
- cur_timer_data->mFrameState = frame_state;
- cur_timer_data->mChildTime = 0;
-#endif
-#if TIME_FAST_TIMERS
- U64 timer_end = get_cpu_clock_count_64();
- sTimerCycles += timer_end - timer_start;
-#endif
- }
-
- LL_INLINE ~LLFastTimer()
- {
-#if TIME_FAST_TIMERS
- U64 timer_start = get_cpu_clock_count_64();
-#endif
-#if FAST_TIMER_ON
- LLFastTimer::FrameState* frame_state = mFrameState;
- U32 total_time = get_cpu_clock_count_32() - mStartTime;
-
- frame_state->mSelfTimeCounter += total_time - LLFastTimer::sCurTimerData.mChildTime;
- frame_state->mActiveCount--;
-
- // store last caller to bootstrap tree creation
- // do this in the destructor in case of recursion to get topmost caller
- frame_state->mLastCaller = mLastTimerData.mFrameState;
-
- // we are only tracking self time, so subtract our total time delta from parents
- mLastTimerData.mChildTime += total_time;
-
- LLFastTimer::sCurTimerData = mLastTimerData;
-#endif
-#if TIME_FAST_TIMERS
- U64 timer_end = get_cpu_clock_count_64();
- sTimerCycles += timer_end - timer_start;
- sTimerCalls++;
-#endif
- }
-
-public:
- static LLMutex* sLogLock;
- static std::queue<LLSD> sLogQueue;
- static BOOL sLog;
- static BOOL sMetricLog;
- static bool sPauseHistory;
- static bool sResetHistory;
- static U64 sTimerCycles;
- static U32 sTimerCalls;
-
- typedef std::vector<FrameState> info_list_t;
- static info_list_t& getFrameStateList();
-
-
- // call this once a frame to reset timers
- static void nextFrame();
-
- // dumps current cumulative frame stats to log
- // call nextFrame() to reset timers
- static void dumpCurTimes();
-
- // call this to reset timer hierarchy, averages, etc.
- static void reset();
-
- static U64 countsPerSecond();
- static S32 getLastFrameIndex() { return sLastFrameIndex; }
- static S32 getCurFrameIndex() { return sCurFrameIndex; }
-
- static void writeLog(std::ostream& os);
- static const NamedTimer* getTimerByName(const std::string& name);
-
- struct CurTimerData
- {
- LLFastTimer* mCurTimer;
- FrameState* mFrameState;
- U32 mChildTime;
- };
- static CurTimerData sCurTimerData;
-
-private:
- static S32 sCurFrameIndex;
- static S32 sLastFrameIndex;
- static U64 sLastFrameTime;
- static info_list_t* sTimerInfos;
-
- U32 mStartTime;
- LLFastTimer::FrameState* mFrameState;
- LLFastTimer::CurTimerData mLastTimerData;
-
-};
-
-typedef class LLFastTimer LLFastTimer;
-
#endif // LL_LLFASTTIMER_H
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