1 files changed, 88 insertions, 239 deletions

diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h
index 576e45d2ae..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.
@@ -33,18 +33,43 @@
 #ifndef LL_FASTTIMER_H
 #define LL_FASTTIMER_H
 
-#include "llinstancetracker.h"
-
-#define FAST_TIMER_ON 1
+// 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
+
+//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
-inline U32 get_cpu_clock_count_32()
+inline U32 LLFastTimer::getCPUClockCount32()
 {
 	U32 ret_val;
-	__asm 
+	__asm
 	{
         _emit   0x0f
         _emit   0x31
@@ -56,11 +81,11 @@ inline U32 get_cpu_clock_count_32()
     return ret_val;
 }
 
-// return full timer value, still shifted by 8 bits
-inline U64 get_cpu_clock_count_64()
+// return full timer value, *not* shifted by 8 bits
+inline U64 LLFastTimer::getCPUClockCount64()
 {
 	U64 ret_val;
-	__asm 
+	__asm
 	{
         _emit   0x0f
         _emit   0x31
@@ -69,249 +94,73 @@ inline U64 get_cpu_clock_count_64()
 		mov dword ptr [ret_val+4], edx
 		mov dword ptr [ret_val], eax
 	}
-    return ret_val >> 8;
+    return ret_val;
 }
+#endif
+
+
+#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);
 
-#endif // LL_WINDOWS
+	return (tp.tv_sec*LLFastTimer::sClockResolution)+tp.tv_nsec;        
+}
 
-#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;													
+inline U32 LLFastTimer::getCPUClockCount32()
+{
+	return (U32)(LLFastTimer::getCPUClockCount64() >> 8);
 }
+#endif // (LL_LINUX || LL_SOLARIS))
+
 
-inline U32 get_cpu_clock_count_64()
-{																	
+#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 >> 8;
+	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 LLFastTimer
-{
-public:
-	// stores a "named" timer instance to be reused via multiple LLFastTimer stack instances
-	class 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();
-
-		struct 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
-		};
-
-		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 DeclareTimer 
-	:	public LLInstanceTracker<DeclareTimer>
-	{
-	public:
-		DeclareTimer(const std::string& name, bool open);
-		DeclareTimer(const std::string& name);
-
-		static void updateCachedPointers();
-
-		// convertable to NamedTimer::FrameState for convenient usage of LLFastTimer(declared_timer)
-		operator NamedTimer::FrameState&() { return *mFrameState; }
-	private:
-		NamedTimer&				mTimer;
-		NamedTimer::FrameState* mFrameState; 
-	};
-
-
-public:
-	static LLMutex* sLogLock;
-	static std::queue<LLSD> sLogQueue;
-	static BOOL sLog;
-	static BOOL sMetricLog;
-
-	typedef std::vector<NamedTimer::FrameState> info_list_t;
-	static info_list_t& getFrameStateList();
-
-	enum RootTimerMarker { ROOT };
-	LLFastTimer(RootTimerMarker);
-
-	LLFastTimer(NamedTimer::FrameState& timer)
-	:	mFrameState(&timer)
-	{
-#if FAST_TIMER_ON
-		NamedTimer::FrameState* frame_state = &timer;
-		U32 cur_time = get_cpu_clock_count_32();
-		mStartSelfTime = cur_time;
-		mStartTotalTime = cur_time;
-
-		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);
-	
-		mLastTimer = sCurTimer;
-		sCurTimer = this;
-#endif
-	}
-
-	~LLFastTimer()
-	{
-#if FAST_TIMER_ON
-		NamedTimer::FrameState* frame_state = mFrameState;
-		U32 cur_time = get_cpu_clock_count_32();
-		frame_state->mSelfTimeCounter += cur_time - mStartSelfTime;
-
-		frame_state->mActiveCount--;
-		LLFastTimer* last_timer = mLastTimer;
-		sCurTimer = last_timer;
-
-		// store last caller to bootstrap tree creation
-		frame_state->mLastCaller = last_timer->mFrameState;
-
-		// we are only tracking self time, so subtract our total time delta from parents
-		U32 total_time = cur_time - mStartTotalTime;
-		last_timer->mStartSelfTime += total_time;
-#endif
-	}
-
-
-	// 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);
-
-public:
-	static bool 		sPauseHistory;
-	static bool 		sResetHistory;
-	
-private:
-	typedef std::vector<LLFastTimer*> timer_stack_t;
-	static LLFastTimer*		sCurTimer;
-	static S32				sCurFrameIndex;
-	static S32				sLastFrameIndex;
-	static U64				sLastFrameTime;
-	static info_list_t*		sTimerInfos;
-
-	U32						mStartSelfTime;	// start time + time of all child timers
-	U32						mStartTotalTime;	// start time + time of all child timers
-	NamedTimer::FrameState*	mFrameState;
-	LLFastTimer*			mLastTimer;
-};
-
 #endif // LL_LLFASTTIMER_H