merge changes for DRTVWR-250

1 files changed, 358 insertions, 4 deletions

diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h
index 2b25f2fabb..e42e549df5 100644
--- a/indra/llcommon/llfasttimer.h
+++ b/indra/llcommon/llfasttimer.h
@@ -1,6 +1,6 @@
 /**
  * @file llfasttimer.h
- * @brief Inline implementations of fast timers.
+ * @brief Declaration of a fast timer.
  *
  * $LicenseInfo:firstyear=2004&license=viewerlgpl$
  * Second Life Viewer Source Code
@@ -27,9 +27,363 @@
 #ifndef LL_FASTTIMER_H
 #define LL_FASTTIMER_H
 
-// Implementation of getCPUClockCount32() and getCPUClockCount64 are now in llfastertimer_class.cpp.
+#include "llinstancetracker.h"
 
-// pull in the actual class definition
-#include "llfasttimer_class.h"
+#define FAST_TIMER_ON 1
+#define DEBUG_FAST_TIMER_THREADS 1
+
+class LLMutex;
+
+#include <queue>
+#include "llsd.h"
+
+#define LL_FASTTIMER_USE_RDTSC 1
+
+
+LL_COMMON_API void assert_main_thread();
+
+class LL_COMMON_API LLFastTimer
+{
+public:
+	class NamedTimer;
+
+	struct LL_COMMON_API FrameState
+	{
+		FrameState();
+		void setNamedTimer(NamedTimer* timerp) { mTimer = 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 = 300 };
+
+		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;
+
+		void setFrameState(FrameState* state) { mFrameState = state; state->setNamedTimer(this); }
+		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
+		//
+		FrameState*		mFrameState;
+
+		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);
+
+		NamedTimer& getNamedTimer() { return mTimer; }
+
+	private:
+		FrameState		mFrameState;
+		NamedTimer&		mTimer;
+	};
+
+public:
+	LLFastTimer(LLFastTimer::FrameState* state);
+
+	LL_FORCE_INLINE LLFastTimer(LLFastTimer::DeclareTimer& timer)
+	:	mFrameState(&timer.mFrameState)
+	{
+#if FAST_TIMER_ON
+		LLFastTimer::FrameState* frame_state = mFrameState;
+		mStartTime = getCPUClockCount32();
+
+		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 DEBUG_FAST_TIMER_THREADS
+#if !LL_RELEASE
+		assert_main_thread();
+#endif
+#endif
+	}
+
+	LL_FORCE_INLINE ~LLFastTimer()
+	{
+#if FAST_TIMER_ON
+		LLFastTimer::FrameState* frame_state = mFrameState;
+		U32 total_time = getCPUClockCount32() - 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
+	}
+
+public:
+	static LLMutex*			sLogLock;
+	static std::queue<LLSD> sLogQueue;
+	static BOOL				sLog;
+	static BOOL				sMetricLog;
+	static std::string		sLogName;
+	static bool 			sPauseHistory;
+	static bool 			sResetHistory;
+
+	// 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:
+
+
+	//////////////////////////////////////////////////////////////////////////////
+	//
+	// Important note: These implementations must be FAST!
+	//
+
+
+#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
+
+	//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();
+	//}
+
+	// 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
+#if LL_FASTTIMER_USE_RDTSC
+	static U32 getCPUClockCount32()
+	{
+		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
+	static U64 getCPUClockCount64()
+	{
+		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
+	//LL_COMMON_API U64 get_clock_count(); // in lltimer.cpp
+	// These use QueryPerformanceCounter, which is arguably fine and also works on AMD architectures.
+	static U32 getCPUClockCount32()
+	{
+		return (U32)(get_clock_count()>>8);
+	}
+
+	static U64 getCPUClockCount64()
+	{
+		return get_clock_count();
+	}
+
+#endif
+
+#endif
+
+
+#if (LL_LINUX || LL_SOLARIS) && !(defined(__i386__) || defined(__amd64__))
+	//
+	// Linux and Solaris implementation of CPU clock - non-x86.
+	// This is accurate but SLOW!  Only use out of desperation.
+	//
+	// 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.
+	static U64 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*sClockResolution)+tp.tv_nsec;        
+	}
+
+	static U32 getCPUClockCount32()
+	{
+		return (U32)(getCPUClockCount64() >> 8);
+	}
+
+#endif // (LL_LINUX || LL_SOLARIS) && !(defined(__i386__) || defined(__amd64__))
+
+
+#if (LL_LINUX || LL_SOLARIS || LL_DARWIN) && (defined(__i386__) || defined(__amd64__))
+	//
+	// Mac+Linux+Solaris FAST x86 implementation of CPU clock
+	static U32 getCPUClockCount32()
+	{
+		U64 x;
+		__asm__ volatile (".byte 0x0f, 0x31": "=A"(x));
+		return (U32)(x >> 8);
+	}
+
+	static U64 getCPUClockCount64()
+	{
+		U64 x;
+		__asm__ volatile (".byte 0x0f, 0x31": "=A"(x));
+		return x;
+	}
+
+#endif
+
+	static U64 sClockResolution;
+
+	static S32				sCurFrameIndex;
+	static S32				sLastFrameIndex;
+	static U64				sLastFrameTime;
+
+	U32							mStartTime;
+	LLFastTimer::FrameState*	mFrameState;
+	LLFastTimer::CurTimerData	mLastTimerData;
+
+};
+
+typedef class LLFastTimer LLFastTimer;
 
 #endif // LL_LLFASTTIMER_H