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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkCommandLineFlags.h" | 8 #include "SkCommandLineFlags.h" |
9 #include "SkForceLinking.h" | 9 #include "SkForceLinking.h" |
10 #include "SkGraphics.h" | 10 #include "SkGraphics.h" |
11 #include "SkOSFile.h" | 11 #include "SkOSFile.h" |
12 #include "SkPicture.h" | 12 #include "SkPicture.h" |
13 #include "SkPictureRecorder.h" | 13 #include "SkPictureRecorder.h" |
14 #include "SkStream.h" | 14 #include "SkStream.h" |
15 #include "SkString.h" | 15 #include "SkString.h" |
16 | 16 |
| 17 #include "BenchTimer.h" |
17 #include "LazyDecodeBitmap.h" | 18 #include "LazyDecodeBitmap.h" |
18 #include "Stats.h" | 19 #include "Stats.h" |
19 #include "Timer.h" | 20 |
| 21 typedef WallTimer Timer; |
20 | 22 |
21 __SK_FORCE_IMAGE_DECODER_LINKING; | 23 __SK_FORCE_IMAGE_DECODER_LINKING; |
22 | 24 |
23 DEFINE_string2(skps, r, "skps", "Directory containing SKPs to read and re-record
."); | 25 DEFINE_string2(skps, r, "skps", "Directory containing SKPs to read and re-record
."); |
24 DEFINE_int32(samples, 10, "Number of times to re-record each SKP."); | 26 DEFINE_int32(samples, 10, "Number of times to re-record each SKP."); |
25 DEFINE_int32(tileGridSize, 512, "Set the tile grid size. Has no effect if bbh is
not set to tilegrid."); | 27 DEFINE_int32(tileGridSize, 512, "Set the tile grid size. Has no effect if bbh is
not set to tilegrid."); |
26 DEFINE_string(bbh, "", "Turn on the bbh and select the type, one of rtree, tileg
rid, quadtree"); | 28 DEFINE_string(bbh, "", "Turn on the bbh and select the type, one of rtree, tileg
rid, quadtree"); |
27 DEFINE_bool(skr, false, "Record SKR instead of SKP."); | 29 DEFINE_bool(skr, false, "Record SKR instead of SKP."); |
28 DEFINE_string(match, "", "The usual filters on file names of SKPs to bench."); | 30 DEFINE_string(match, "", "The usual filters on file names of SKPs to bench."); |
29 DEFINE_string(timescale, "us", "Print times in ms, us, or ns"); | 31 DEFINE_string(timescale, "us", "Print times in ms, us, or ns"); |
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72 } | 74 } |
73 | 75 |
74 static void bench_record(const SkPicture& src, | 76 static void bench_record(const SkPicture& src, |
75 const double timerOverhead, | 77 const double timerOverhead, |
76 const char* name, | 78 const char* name, |
77 SkBBHFactory* bbhFactory) { | 79 SkBBHFactory* bbhFactory) { |
78 // Rerecord once to warm up any caches. Otherwise the first sample can be v
ery noisy. | 80 // Rerecord once to warm up any caches. Otherwise the first sample can be v
ery noisy. |
79 rerecord(src, bbhFactory); | 81 rerecord(src, bbhFactory); |
80 | 82 |
81 // Rerecord once to see how many times we should loop to make timer overhead
insignificant. | 83 // Rerecord once to see how many times we should loop to make timer overhead
insignificant. |
82 WallTimer timer; | 84 Timer timer; |
83 const double scale = timescale(); | |
84 do { | 85 do { |
85 timer.start(); | 86 timer.start(timescale()); |
86 rerecord(src, bbhFactory); | 87 rerecord(src, bbhFactory); |
87 timer.end(); | 88 timer.end(); |
88 } while (timer.fWall * scale < timerOverhead); // Loop just in case somethi
ng bizarre happens. | 89 } while (timer.fWall < timerOverhead); // Loop just in case something biza
rre happens. |
89 | 90 |
90 // We want (timer overhead / measurement) to be less than FLAGS_overheadGoal
. | 91 // We want (timer overhead / measurement) to be less than FLAGS_overheadGoal
. |
91 // So in each sample, we'll loop enough times to have made that true for our
first measurement. | 92 // So in each sample, we'll loop enough times to have made that true for our
first measurement. |
92 const int loops = (int)ceil(timerOverhead / timer.fWall / FLAGS_overheadGoal
); | 93 const int loops = (int)ceil(timerOverhead / timer.fWall / FLAGS_overheadGoal
); |
93 | 94 |
94 SkAutoTMalloc<double> samples(FLAGS_samples); | 95 SkAutoTMalloc<double> samples(FLAGS_samples); |
95 for (int i = 0; i < FLAGS_samples; i++) { | 96 for (int i = 0; i < FLAGS_samples; i++) { |
96 timer.start(); | 97 timer.start(timescale()); |
97 for (int j = 0; j < loops; j++) { | 98 for (int j = 0; j < loops; j++) { |
98 rerecord(src, bbhFactory); | 99 rerecord(src, bbhFactory); |
99 } | 100 } |
100 timer.end(); | 101 timer.end(); |
101 samples[i] = timer.fWall * scale / loops; | 102 samples[i] = timer.fWall / loops; |
102 } | 103 } |
103 | 104 |
104 Stats stats(samples.get(), FLAGS_samples); | 105 Stats stats(samples.get(), FLAGS_samples); |
105 if (FLAGS_verbose == 0) { | 106 if (FLAGS_verbose == 0) { |
106 printf("%g\t%s\n", stats.min, name); | 107 printf("%g\t%s\n", stats.min, name); |
107 } else if (FLAGS_verbose == 1) { | 108 } else if (FLAGS_verbose == 1) { |
108 // Get a rough idea of how noisy the measurements were. | 109 // Get a rough idea of how noisy the measurements were. |
109 const double noisePercent = 100 * sqrt(stats.var) / stats.mean; | 110 const double noisePercent = 100 * sqrt(stats.var) / stats.mean; |
110 printf("%g\t%g\t%g\t±%.0f%%\t%s\n", stats.min, stats.mean, stats.max, no
isePercent, name); | 111 printf("%g\t%g\t%g\t±%.0f%%\t%s\n", stats.min, stats.mean, stats.max, no
isePercent, name); |
111 } else if (FLAGS_verbose == 2) { | 112 } else if (FLAGS_verbose == 2) { |
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124 | 125 |
125 if (FLAGS_bbh.count() > 1) { | 126 if (FLAGS_bbh.count() > 1) { |
126 SkDebugf("Multiple bbh arguments supplied.\n"); | 127 SkDebugf("Multiple bbh arguments supplied.\n"); |
127 return 1; | 128 return 1; |
128 } | 129 } |
129 | 130 |
130 SkAutoTDelete<SkBBHFactory> bbhFactory(parse_FLAGS_bbh()); | 131 SkAutoTDelete<SkBBHFactory> bbhFactory(parse_FLAGS_bbh()); |
131 | 132 |
132 // Each run will use this timer overhead estimate to guess how many times it
should run. | 133 // Each run will use this timer overhead estimate to guess how many times it
should run. |
133 static const int kOverheadLoops = 10000000; | 134 static const int kOverheadLoops = 10000000; |
134 WallTimer timer; | 135 Timer timer; |
135 double overheadEstimate = 0.0; | 136 double overheadEstimate = 0.0; |
136 const double scale = timescale(); | |
137 for (int i = 0; i < kOverheadLoops; i++) { | 137 for (int i = 0; i < kOverheadLoops; i++) { |
138 timer.start(); | 138 timer.start(timescale()); |
139 timer.end(); | 139 timer.end(); |
140 overheadEstimate += timer.fWall * scale; | 140 overheadEstimate += timer.fWall; |
141 } | 141 } |
142 overheadEstimate /= kOverheadLoops; | 142 overheadEstimate /= kOverheadLoops; |
143 | 143 |
144 SkOSFile::Iter it(FLAGS_skps[0], ".skp"); | 144 SkOSFile::Iter it(FLAGS_skps[0], ".skp"); |
145 SkString filename; | 145 SkString filename; |
146 bool failed = false; | 146 bool failed = false; |
147 while (it.next(&filename)) { | 147 while (it.next(&filename)) { |
148 if (SkCommandLineFlags::ShouldSkip(FLAGS_match, filename.c_str())) { | 148 if (SkCommandLineFlags::ShouldSkip(FLAGS_match, filename.c_str())) { |
149 continue; | 149 continue; |
150 } | 150 } |
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167 bench_record(*src, overheadEstimate, filename.c_str(), bbhFactory.get())
; | 167 bench_record(*src, overheadEstimate, filename.c_str(), bbhFactory.get())
; |
168 } | 168 } |
169 return failed ? 1 : 0; | 169 return failed ? 1 : 0; |
170 } | 170 } |
171 | 171 |
172 #if !defined SK_BUILD_FOR_IOS | 172 #if !defined SK_BUILD_FOR_IOS |
173 int main(int argc, char * const argv[]) { | 173 int main(int argc, char * const argv[]) { |
174 return tool_main(argc, (char**) argv); | 174 return tool_main(argc, (char**) argv); |
175 } | 175 } |
176 #endif | 176 #endif |
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