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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include "base/format_macros.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/ptr_util.h"
#include "base/message_loop/message_pump_type.h"
#include "base/strings/stringprintf.h"
#include "base/synchronization/condition_variable.h"
#include "base/synchronization/lock.h"
#include "base/synchronization/waitable_event.h"
#include "base/task/current_thread.h"
#include "base/task/sequence_manager/sequence_manager_impl.h"
#include "base/task/single_thread_task_runner.h"
#include "base/threading/thread.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/perf/perf_result_reporter.h"
#if BUILDFLAG(IS_ANDROID)
#include "base/android/java_handler_thread.h"
#endif
namespace base {
namespace {
constexpr char kMetricPrefixScheduleWork[] = "ScheduleWork.";
constexpr char kMetricMinBatchTime[] = "min_batch_time_per_task";
constexpr char kMetricMaxBatchTime[] = "max_batch_time_per_task";
constexpr char kMetricTotalTime[] = "total_time_per_task";
constexpr char kMetricThreadTime[] = "thread_time_per_task";
perf_test::PerfResultReporter SetUpReporter(const std::string& story_name) {
perf_test::PerfResultReporter reporter(kMetricPrefixScheduleWork, story_name);
reporter.RegisterImportantMetric(kMetricMinBatchTime, "us");
reporter.RegisterImportantMetric(kMetricMaxBatchTime, "us");
reporter.RegisterImportantMetric(kMetricTotalTime, "us");
reporter.RegisterImportantMetric(kMetricThreadTime, "us");
return reporter;
}
#if BUILDFLAG(IS_ANDROID)
class JavaHandlerThreadForTest : public android::JavaHandlerThread {
public:
explicit JavaHandlerThreadForTest(const char* name)
: android::JavaHandlerThread(name, base::ThreadType::kDefault) {}
using android::JavaHandlerThread::state;
using android::JavaHandlerThread::State;
};
#endif
} // namespace
class ScheduleWorkTest : public testing::Test {
public:
ScheduleWorkTest() : counter_(0) {}
void SetUp() override {
if (base::ThreadTicks::IsSupported())
base::ThreadTicks::WaitUntilInitialized();
}
void Increment(uint64_t amount) { counter_ += amount; }
void Schedule(int index) {
base::TimeTicks start = base::TimeTicks::Now();
base::ThreadTicks thread_start;
if (ThreadTicks::IsSupported())
thread_start = base::ThreadTicks::Now();
base::TimeDelta minimum = base::TimeDelta::Max();
base::TimeDelta maximum = base::TimeDelta();
base::TimeTicks now, lastnow = start;
uint64_t schedule_calls = 0u;
do {
for (size_t i = 0; i < kBatchSize; ++i) {
target_message_loop_base()->GetMessagePump()->ScheduleWork();
schedule_calls++;
}
now = base::TimeTicks::Now();
base::TimeDelta laptime = now - lastnow;
lastnow = now;
minimum = std::min(minimum, laptime);
maximum = std::max(maximum, laptime);
} while (now - start < base::Seconds(kTargetTimeSec));
scheduling_times_[index] = now - start;
if (ThreadTicks::IsSupported())
scheduling_thread_times_[index] =
base::ThreadTicks::Now() - thread_start;
min_batch_times_[index] = minimum;
max_batch_times_[index] = maximum;
target_message_loop_base()->GetTaskRunner()->PostTask(
FROM_HERE, base::BindOnce(&ScheduleWorkTest::Increment,
base::Unretained(this), schedule_calls));
}
void ScheduleWork(MessagePumpType target_type, int num_scheduling_threads) {
#if BUILDFLAG(IS_ANDROID)
if (target_type == MessagePumpType::JAVA) {
java_thread_ = std::make_unique<JavaHandlerThreadForTest>("target");
java_thread_->Start();
} else
#endif
{
target_ = std::make_unique<Thread>("test");
Thread::Options options(target_type, 0u);
options.message_pump_type = target_type;
target_->StartWithOptions(std::move(options));
// Without this, it's possible for the scheduling threads to start and run
// before the target thread. In this case, the scheduling threads will
// call target_message_loop()->ScheduleWork(), which dereferences the
// loop's message pump, which is only created after the target thread has
// finished starting.
target_->WaitUntilThreadStarted();
}
std::vector<std::unique_ptr<Thread>> scheduling_threads;
scheduling_times_ =
std::make_unique<base::TimeDelta[]>(num_scheduling_threads);
scheduling_thread_times_ =
std::make_unique<base::TimeDelta[]>(num_scheduling_threads);
min_batch_times_ =
std::make_unique<base::TimeDelta[]>(num_scheduling_threads);
max_batch_times_ =
std::make_unique<base::TimeDelta[]>(num_scheduling_threads);
for (int i = 0; i < num_scheduling_threads; ++i) {
scheduling_threads.push_back(std::make_unique<Thread>("posting thread"));
scheduling_threads[i]->Start();
}
for (int i = 0; i < num_scheduling_threads; ++i) {
scheduling_threads[i]->task_runner()->PostTask(
FROM_HERE, base::BindOnce(&ScheduleWorkTest::Schedule,
base::Unretained(this), i));
}
for (int i = 0; i < num_scheduling_threads; ++i) {
scheduling_threads[i]->Stop();
}
#if BUILDFLAG(IS_ANDROID)
if (target_type == MessagePumpType::JAVA) {
java_thread_->Stop();
java_thread_.reset();
} else
#endif
{
target_->Stop();
target_.reset();
}
base::TimeDelta total_time;
base::TimeDelta total_thread_time;
base::TimeDelta min_batch_time = base::TimeDelta::Max();
base::TimeDelta max_batch_time = base::TimeDelta();
for (int i = 0; i < num_scheduling_threads; ++i) {
total_time += scheduling_times_[i];
total_thread_time += scheduling_thread_times_[i];
min_batch_time = std::min(min_batch_time, min_batch_times_[i]);
max_batch_time = std::max(max_batch_time, max_batch_times_[i]);
}
std::string story_name = StringPrintf(
"%s_pump_from_%d_threads",
target_type == MessagePumpType::IO
? "io"
: (target_type == MessagePumpType::UI ? "ui" : "default"),
num_scheduling_threads);
auto reporter = SetUpReporter(story_name);
reporter.AddResult(kMetricMinBatchTime, total_time.InMicroseconds() /
static_cast<double>(counter_));
reporter.AddResult(
kMetricMaxBatchTime,
max_batch_time.InMicroseconds() / static_cast<double>(kBatchSize));
reporter.AddResult(kMetricTotalTime, total_time.InMicroseconds() /
static_cast<double>(counter_));
if (ThreadTicks::IsSupported()) {
reporter.AddResult(kMetricThreadTime, total_thread_time.InMicroseconds() /
static_cast<double>(counter_));
}
}
sequence_manager::internal::SequenceManagerImpl* target_message_loop_base() {
#if BUILDFLAG(IS_ANDROID)
if (java_thread_) {
return static_cast<sequence_manager::internal::SequenceManagerImpl*>(
java_thread_->state()->sequence_manager.get());
}
#endif
return CurrentThread::Get()->GetCurrentSequenceManagerImpl();
}
private:
std::unique_ptr<Thread> target_;
#if BUILDFLAG(IS_ANDROID)
std::unique_ptr<JavaHandlerThreadForTest> java_thread_;
#endif
std::unique_ptr<base::TimeDelta[]> scheduling_times_;
std::unique_ptr<base::TimeDelta[]> scheduling_thread_times_;
std::unique_ptr<base::TimeDelta[]> min_batch_times_;
std::unique_ptr<base::TimeDelta[]> max_batch_times_;
uint64_t counter_;
static const size_t kTargetTimeSec = 5;
static const size_t kBatchSize = 1000;
};
TEST_F(ScheduleWorkTest, ThreadTimeToIOFromOneThread) {
ScheduleWork(MessagePumpType::IO, 1);
}
TEST_F(ScheduleWorkTest, ThreadTimeToIOFromTwoThreads) {
ScheduleWork(MessagePumpType::IO, 2);
}
TEST_F(ScheduleWorkTest, ThreadTimeToIOFromFourThreads) {
ScheduleWork(MessagePumpType::IO, 4);
}
TEST_F(ScheduleWorkTest, ThreadTimeToUIFromOneThread) {
ScheduleWork(MessagePumpType::UI, 1);
}
TEST_F(ScheduleWorkTest, ThreadTimeToUIFromTwoThreads) {
ScheduleWork(MessagePumpType::UI, 2);
}
TEST_F(ScheduleWorkTest, ThreadTimeToUIFromFourThreads) {
ScheduleWork(MessagePumpType::UI, 4);
}
TEST_F(ScheduleWorkTest, ThreadTimeToDefaultFromOneThread) {
ScheduleWork(MessagePumpType::DEFAULT, 1);
}
TEST_F(ScheduleWorkTest, ThreadTimeToDefaultFromTwoThreads) {
ScheduleWork(MessagePumpType::DEFAULT, 2);
}
TEST_F(ScheduleWorkTest, ThreadTimeToDefaultFromFourThreads) {
ScheduleWork(MessagePumpType::DEFAULT, 4);
}
#if BUILDFLAG(IS_ANDROID)
TEST_F(ScheduleWorkTest, ThreadTimeToJavaFromOneThread) {
ScheduleWork(MessagePumpType::JAVA, 1);
}
TEST_F(ScheduleWorkTest, ThreadTimeToJavaFromTwoThreads) {
ScheduleWork(MessagePumpType::JAVA, 2);
}
TEST_F(ScheduleWorkTest, ThreadTimeToJavaFromFourThreads) {
ScheduleWork(MessagePumpType::JAVA, 4);
}
#endif
} // namespace base
|
