1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/**
* @file lltrace.h
* @brief Runtime statistics accumulation.
*
* $LicenseInfo:firstyear=2001&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2012, 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
* $/LicenseInfo$
*/
#ifndef LL_LLTRACE_H
#define LL_LLTRACE_H
namespace LLTrace
{
class Stat
{
public:
Stat(const char* name)
: mName(name)
{}
void record() {}
void record(int value) {}
void record(float value) {}
private:
const std::string mName;
};
class BlockTimer
{
public:
BlockTimer(const char* name)
: mName(name)
{}
struct Accumulator
{
U32 mTotalTimeCounter;
U32 mChildTimeCounter;
U32 mCalls;
Accumulator* mParent; // info for caller timer
Accumulator* mLastCaller; // used to bootstrap tree construction
const BlockTimer* mTimer; // points to block timer associated with this storage
U8 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
std::vector<Accumulator*> mChildren; // currently assumed child timers
};
struct RecorderStackEntry
{
struct Recorder* mRecorder;
Accumulator* mAccumulator;
U32 mChildTime;
};
struct Recorder
{
LL_FORCE_INLINE Recorder(BlockTimer& block_timer)
: mLastRecorder(sCurRecorder)
{
mStartTime = getCPUClockCount32();
Accumulator* accumulator = ???; // get per-thread accumulator
accumulator->mActiveCount++;
accumulator->mCalls++;
accumulator->mMoveUpTree |= (accumulator->mParent->mActiveCount == 0);
// push new timer on stack
sCurRecorder.mRecorder = this;
sCurRecorder.mAccumulator = accumulator;
sCurRecorder.mChildTime = 0;
}
LL_FORCE_INLINE ~Recorder()
{
U32 total_time = getCPUClockCount32() - mStartTime;
Accumulator* accumulator = sCurRecorder.mAccumulator;
accumulator->mTotalTimeCounter += total_time;
accumulator->mChildTimeCounter += sCurRecorder.mChildTime;
accumulator->mActiveCount--;
accumulator->mLastCaller = mLastRecorder->mAccumulator;
mLastRecorder->mChildTime += total_time;
// pop stack
sCurRecorder = mLastRecorder;
}
RecorderStackEntry mLastRecorder;
U32 mStartTime;
};
private:
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;
}
const std::string mName;
static RecorderStackEntry* sCurRecorder;
};
BlockTimer::RecorderStackEntry BlockTimer::sCurRecorder;
class TimeInterval
{
public:
void start() {}
void stop() {}
void resume() {}
};
class SamplingTimeInterval
{
public:
void start() {}
void stop() {}
void resume() {}
};
}
#define TOKEN_PASTE_ACTUAL(x, y) x##y
#define TOKEN_PASTE(x, y) TOKEN_PASTE_ACTUAL(x, y)
#define RECORD_BLOCK_TIME(block_timer) LLTrace::BlockTimer::Recorder TOKEN_PASTE(block_time_recorder, __COUNTER__)(block_timer);
#endif // LL_LLTRACE_H
|
