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-rw-r--r--indra/llcommon/llfasttimer.h194
1 files changed, 112 insertions, 82 deletions
diff --git a/indra/llcommon/llfasttimer.h b/indra/llcommon/llfasttimer.h
index f5c90291b8..8af79c90fd 100644
--- a/indra/llcommon/llfasttimer.h
+++ b/indra/llcommon/llfasttimer.h
@@ -1,11 +1,11 @@
-/**
+/**
* @file llfasttimer.h
* @brief Declaration of a fast timer.
*
* $LicenseInfo:firstyear=2004&license=viewergpl$
- *
+ *
* 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.
@@ -39,13 +39,37 @@
#define TIME_FAST_TIMERS 0
#if LL_WINDOWS
+#define LL_INLINE __forceinline
+
+//
+// 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 get_cpu_clock_count_32()
+//{
+// U64 time_stamp = __rdtsc();
+// return (U32)(time_stamp >> 8);
+//}
+//
+//// return full timer value, *not* shifted by 8 bits
+//inline U64 get_cpu_clock_count_64()
+//{
+// 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()
{
U32 ret_val;
- __asm
+ __asm
{
_emit 0x0f
_emit 0x31
@@ -61,7 +85,7 @@ inline U32 get_cpu_clock_count_32()
inline U64 get_cpu_clock_count_64()
{
U64 ret_val;
- __asm
+ __asm
{
_emit 0x0f
_emit 0x31
@@ -72,19 +96,20 @@ inline U64 get_cpu_clock_count_64()
}
return ret_val;
}
-
-#endif // LL_WINDOWS
+#else
+#define LL_INLINE
+#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;
+{
+ U64 x;
+ __asm__ volatile (".byte 0x0f, 0x31": "=A"(x));
+ return (U32)x >> 8;
}
inline U32 get_cpu_clock_count_64()
-{
+{
U64 x;
__asm__ volatile (".byte 0x0f, 0x31": "=A"(x));
return x >> 8;
@@ -103,7 +128,7 @@ inline U32 get_cpu_clock_count_32()
}
inline U32 get_cpu_clock_count_64()
-{
+{
return get_clock_count();
}
#endif
@@ -113,12 +138,27 @@ 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
+ class LL_COMMON_API NamedTimer
: public LLInstanceTracker<NamedTimer>
{
friend class DeclareTimer;
@@ -149,25 +189,11 @@ public:
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:
+ private:
friend class LLFastTimer;
friend class NamedTimerFactory;
@@ -178,7 +204,7 @@ public:
// recursive call to gather total time from children
static void accumulateTimings();
- // updates cumulative times and hierarchy,
+ // updates cumulative times and hierarchy,
// can be called multiple times in a frame, at any point
static void processTimes();
@@ -186,7 +212,6 @@ public:
static void resetFrame();
static void reset();
-
//
// members
//
@@ -207,58 +232,47 @@ public:
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();
- // convertable to NamedTimer::FrameState for convenient usage of LLFastTimer(declared_timer)
- operator NamedTimer::FrameState&() { return *mFrameState; }
private:
- NamedTimer& mTimer;
- NamedTimer::FrameState* mFrameState;
+ NamedTimer& mTimer;
+ 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();
+ LLFastTimer(LLFastTimer::FrameState* state);
- enum RootTimerMarker { ROOT };
- LLFastTimer(RootTimerMarker);
-
- LLFastTimer(NamedTimer::FrameState& timer)
- : mFrameState(&timer)
+ 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
- NamedTimer::FrameState* frame_state = &timer;
- U32 cur_time = get_cpu_clock_count_32();
- mStartSelfTime = cur_time;
- mStartTotalTime = cur_time;
+ 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);
-
- mLastTimer = sCurTimer;
- sCurTimer = this;
+
+ 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();
@@ -266,41 +280,54 @@ public:
#endif
}
- ~LLFastTimer()
+ LL_INLINE ~LLFastTimer()
{
#if TIME_FAST_TIMERS
U64 timer_start = get_cpu_clock_count_64();
#endif
#if FAST_TIMER_ON
- NamedTimer::FrameState* frame_state = mFrameState;
- U32 cur_time = get_cpu_clock_count_32();
- frame_state->mSelfTimeCounter += cur_time - mStartSelfTime;
+ 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--;
- LLFastTimer* last_timer = mLastTimer;
- sCurTimer = last_timer;
// store last caller to bootstrap tree creation
- frame_state->mLastCaller = last_timer->mFrameState;
+ // 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
- U32 total_time = cur_time - mStartTotalTime;
- last_timer->mStartSelfTime += total_time;
+ 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
+#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();
+ static void dumpCurTimes();
// call this to reset timer hierarchy, averages, etc.
static void reset();
@@ -312,23 +339,26 @@ public:
static void writeLog(std::ostream& os);
static const NamedTimer* getTimerByName(const std::string& name);
-public:
- static bool sPauseHistory;
- static bool sResetHistory;
- static U64 sTimerCycles;
- static U32 sTimerCalls;
-
+ struct CurTimerData
+ {
+ LLFastTimer* mCurTimer;
+ FrameState* mFrameState;
+ U32 mChildTime;
+ };
+ static CurTimerData sCurTimerData;
+
private:
- 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;
+ U32 mStartTime;
+ LLFastTimer::FrameState* mFrameState;
+ LLFastTimer::CurTimerData mLastTimerData;
+
};
+typedef class LLFastTimer LLFastTimer;
+
#endif // LL_LLFASTTIMER_H
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