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| 1 /* | |
| 2 * Copyright 2010 The WebRTC Project Authors. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <iomanip> | |
| 12 #include <iostream> | |
| 13 #include <vector> | |
| 14 | |
| 15 #if defined(WEBRTC_WIN) | |
| 16 #include "webrtc/base/win32.h" | |
| 17 #endif | |
| 18 | |
| 19 #include "webrtc/base/cpumonitor.h" | |
| 20 #include "webrtc/base/flags.h" | |
| 21 #include "webrtc/base/gunit.h" | |
| 22 #include "webrtc/base/scoped_ptr.h" | |
| 23 #include "webrtc/base/thread.h" | |
| 24 #include "webrtc/base/timeutils.h" | |
| 25 #include "webrtc/base/timing.h" | |
| 26 #include "webrtc/test/testsupport/gtest_disable.h" | |
| 27 | |
| 28 namespace rtc { | |
| 29 | |
| 30 static const int kMaxCpus = 1024; | |
| 31 static const int kSettleTime = 100; // Amount of time to between tests. | |
| 32 static const int kIdleTime = 500; // Amount of time to be idle in ms. | |
| 33 static const int kBusyTime = 1000; // Amount of time to be busy in ms. | |
| 34 static const int kLongInterval = 2000; // Interval longer than busy times | |
| 35 | |
| 36 class BusyThread : public rtc::Thread { | |
| 37 public: | |
| 38 BusyThread(double load, double duration, double interval) : | |
| 39 load_(load), duration_(duration), interval_(interval) { | |
| 40 } | |
| 41 virtual ~BusyThread() { | |
| 42 Stop(); | |
| 43 } | |
| 44 void Run() { | |
| 45 Timing time; | |
| 46 double busy_time = interval_ * load_ / 100.0; | |
| 47 for (;;) { | |
| 48 time.BusyWait(busy_time); | |
| 49 time.IdleWait(interval_ - busy_time); | |
| 50 if (duration_) { | |
| 51 duration_ -= interval_; | |
| 52 if (duration_ <= 0) { | |
| 53 break; | |
| 54 } | |
| 55 } | |
| 56 } | |
| 57 } | |
| 58 private: | |
| 59 double load_; | |
| 60 double duration_; | |
| 61 double interval_; | |
| 62 }; | |
| 63 | |
| 64 class CpuLoadListener : public sigslot::has_slots<> { | |
| 65 public: | |
| 66 CpuLoadListener() | |
| 67 : current_cpus_(0), | |
| 68 cpus_(0), | |
| 69 process_load_(.0f), | |
| 70 system_load_(.0f), | |
| 71 count_(0) { | |
| 72 } | |
| 73 | |
| 74 void OnCpuLoad(int current_cpus, int cpus, float proc_load, float sys_load) { | |
| 75 current_cpus_ = current_cpus; | |
| 76 cpus_ = cpus; | |
| 77 process_load_ = proc_load; | |
| 78 system_load_ = sys_load; | |
| 79 ++count_; | |
| 80 } | |
| 81 | |
| 82 int current_cpus() const { return current_cpus_; } | |
| 83 int cpus() const { return cpus_; } | |
| 84 float process_load() const { return process_load_; } | |
| 85 float system_load() const { return system_load_; } | |
| 86 int count() const { return count_; } | |
| 87 | |
| 88 private: | |
| 89 int current_cpus_; | |
| 90 int cpus_; | |
| 91 float process_load_; | |
| 92 float system_load_; | |
| 93 int count_; | |
| 94 }; | |
| 95 | |
| 96 // Set affinity (which cpu to run on), but respecting FLAG_affinity: | |
| 97 // -1 means no affinity - run on whatever cpu is available. | |
| 98 // 0 .. N means run on specific cpu. The tool will create N threads and call | |
| 99 // SetThreadAffinity on 0 to N - 1 as cpu. FLAG_affinity sets the first cpu | |
| 100 // so the range becomes affinity to affinity + N - 1 | |
| 101 // Note that this function affects Windows scheduling, effectively giving | |
| 102 // the thread with affinity for a specified CPU more priority on that CPU. | |
| 103 bool SetThreadAffinity(BusyThread* t, int cpu, int affinity) { | |
| 104 #if defined(WEBRTC_WIN) | |
| 105 if (affinity >= 0) { | |
| 106 return ::SetThreadAffinityMask(t->GetHandle(), | |
| 107 1 << (cpu + affinity)) != FALSE; | |
| 108 } | |
| 109 #endif | |
| 110 return true; | |
| 111 } | |
| 112 | |
| 113 bool SetThreadPriority(BusyThread* t, int prio) { | |
| 114 if (!prio) { | |
| 115 return true; | |
| 116 } | |
| 117 bool ok = t->SetPriority(static_cast<rtc::ThreadPriority>(prio)); | |
| 118 if (!ok) { | |
| 119 std::cout << "Error setting thread priority." << std::endl; | |
| 120 } | |
| 121 return ok; | |
| 122 } | |
| 123 | |
| 124 int CpuLoad(double cpuload, double duration, int numthreads, | |
| 125 int priority, double interval, int affinity) { | |
| 126 int ret = 0; | |
| 127 std::vector<BusyThread*> threads; | |
| 128 for (int i = 0; i < numthreads; ++i) { | |
| 129 threads.push_back(new BusyThread(cpuload, duration, interval)); | |
| 130 // NOTE(fbarchard): Priority must be done before Start. | |
| 131 if (!SetThreadPriority(threads[i], priority) || | |
| 132 !threads[i]->Start() || | |
| 133 !SetThreadAffinity(threads[i], i, affinity)) { | |
| 134 ret = 1; | |
| 135 break; | |
| 136 } | |
| 137 } | |
| 138 // Wait on each thread | |
| 139 if (ret == 0) { | |
| 140 for (int i = 0; i < numthreads; ++i) { | |
| 141 threads[i]->Stop(); | |
| 142 } | |
| 143 } | |
| 144 | |
| 145 for (int i = 0; i < numthreads; ++i) { | |
| 146 delete threads[i]; | |
| 147 } | |
| 148 return ret; | |
| 149 } | |
| 150 | |
| 151 // Make 2 CPUs busy | |
| 152 static void CpuTwoBusyLoop(int busytime) { | |
| 153 CpuLoad(100.0, busytime / 1000.0, 2, 1, 0.050, -1); | |
| 154 } | |
| 155 | |
| 156 // Make 1 CPUs busy | |
| 157 static void CpuBusyLoop(int busytime) { | |
| 158 CpuLoad(100.0, busytime / 1000.0, 1, 1, 0.050, -1); | |
| 159 } | |
| 160 | |
| 161 // Make 1 use half CPU time. | |
| 162 static void CpuHalfBusyLoop(int busytime) { | |
| 163 CpuLoad(50.0, busytime / 1000.0, 1, 1, 0.050, -1); | |
| 164 } | |
| 165 | |
| 166 void TestCpuSampler(bool test_proc, bool test_sys, bool force_fallback) { | |
| 167 CpuSampler sampler; | |
| 168 sampler.set_force_fallback(force_fallback); | |
| 169 EXPECT_TRUE(sampler.Init()); | |
| 170 sampler.set_load_interval(100); | |
| 171 int cpus = sampler.GetMaxCpus(); | |
| 172 | |
| 173 // Test1: CpuSampler under idle situation. | |
| 174 Thread::SleepMs(kSettleTime); | |
| 175 sampler.GetProcessLoad(); | |
| 176 sampler.GetSystemLoad(); | |
| 177 | |
| 178 Thread::SleepMs(kIdleTime); | |
| 179 | |
| 180 float proc_idle = 0.f, sys_idle = 0.f; | |
| 181 if (test_proc) { | |
| 182 proc_idle = sampler.GetProcessLoad(); | |
| 183 } | |
| 184 if (test_sys) { | |
| 185 sys_idle = sampler.GetSystemLoad(); | |
| 186 } | |
| 187 if (test_proc) { | |
| 188 LOG(LS_INFO) << "ProcessLoad Idle: " | |
| 189 << std::setiosflags(std::ios_base::fixed) | |
| 190 << std::setprecision(2) << std::setw(6) << proc_idle; | |
| 191 EXPECT_GE(proc_idle, 0.f); | |
| 192 EXPECT_LE(proc_idle, static_cast<float>(cpus)); | |
| 193 } | |
| 194 if (test_sys) { | |
| 195 LOG(LS_INFO) << "SystemLoad Idle: " | |
| 196 << std::setiosflags(std::ios_base::fixed) | |
| 197 << std::setprecision(2) << std::setw(6) << sys_idle; | |
| 198 EXPECT_GE(sys_idle, 0.f); | |
| 199 EXPECT_LE(sys_idle, static_cast<float>(cpus)); | |
| 200 } | |
| 201 | |
| 202 // Test2: CpuSampler with main process at 50% busy. | |
| 203 Thread::SleepMs(kSettleTime); | |
| 204 sampler.GetProcessLoad(); | |
| 205 sampler.GetSystemLoad(); | |
| 206 | |
| 207 CpuHalfBusyLoop(kBusyTime); | |
| 208 | |
| 209 float proc_halfbusy = 0.f, sys_halfbusy = 0.f; | |
| 210 if (test_proc) { | |
| 211 proc_halfbusy = sampler.GetProcessLoad(); | |
| 212 } | |
| 213 if (test_sys) { | |
| 214 sys_halfbusy = sampler.GetSystemLoad(); | |
| 215 } | |
| 216 if (test_proc) { | |
| 217 LOG(LS_INFO) << "ProcessLoad Halfbusy: " | |
| 218 << std::setiosflags(std::ios_base::fixed) | |
| 219 << std::setprecision(2) << std::setw(6) << proc_halfbusy; | |
| 220 EXPECT_GE(proc_halfbusy, 0.f); | |
| 221 EXPECT_LE(proc_halfbusy, static_cast<float>(cpus)); | |
| 222 } | |
| 223 if (test_sys) { | |
| 224 LOG(LS_INFO) << "SystemLoad Halfbusy: " | |
| 225 << std::setiosflags(std::ios_base::fixed) | |
| 226 << std::setprecision(2) << std::setw(6) << sys_halfbusy; | |
| 227 EXPECT_GE(sys_halfbusy, 0.f); | |
| 228 EXPECT_LE(sys_halfbusy, static_cast<float>(cpus)); | |
| 229 } | |
| 230 | |
| 231 // Test3: CpuSampler with main process busy. | |
| 232 Thread::SleepMs(kSettleTime); | |
| 233 sampler.GetProcessLoad(); | |
| 234 sampler.GetSystemLoad(); | |
| 235 | |
| 236 CpuBusyLoop(kBusyTime); | |
| 237 | |
| 238 float proc_busy = 0.f, sys_busy = 0.f; | |
| 239 if (test_proc) { | |
| 240 proc_busy = sampler.GetProcessLoad(); | |
| 241 } | |
| 242 if (test_sys) { | |
| 243 sys_busy = sampler.GetSystemLoad(); | |
| 244 } | |
| 245 if (test_proc) { | |
| 246 LOG(LS_INFO) << "ProcessLoad Busy: " | |
| 247 << std::setiosflags(std::ios_base::fixed) | |
| 248 << std::setprecision(2) << std::setw(6) << proc_busy; | |
| 249 EXPECT_GE(proc_busy, 0.f); | |
| 250 EXPECT_LE(proc_busy, static_cast<float>(cpus)); | |
| 251 } | |
| 252 if (test_sys) { | |
| 253 LOG(LS_INFO) << "SystemLoad Busy: " | |
| 254 << std::setiosflags(std::ios_base::fixed) | |
| 255 << std::setprecision(2) << std::setw(6) << sys_busy; | |
| 256 EXPECT_GE(sys_busy, 0.f); | |
| 257 EXPECT_LE(sys_busy, static_cast<float>(cpus)); | |
| 258 } | |
| 259 | |
| 260 // Test4: CpuSampler with 2 cpus process busy. | |
| 261 if (cpus >= 2) { | |
| 262 Thread::SleepMs(kSettleTime); | |
| 263 sampler.GetProcessLoad(); | |
| 264 sampler.GetSystemLoad(); | |
| 265 | |
| 266 CpuTwoBusyLoop(kBusyTime); | |
| 267 | |
| 268 float proc_twobusy = 0.f, sys_twobusy = 0.f; | |
| 269 if (test_proc) { | |
| 270 proc_twobusy = sampler.GetProcessLoad(); | |
| 271 } | |
| 272 if (test_sys) { | |
| 273 sys_twobusy = sampler.GetSystemLoad(); | |
| 274 } | |
| 275 if (test_proc) { | |
| 276 LOG(LS_INFO) << "ProcessLoad 2 CPU Busy:" | |
| 277 << std::setiosflags(std::ios_base::fixed) | |
| 278 << std::setprecision(2) << std::setw(6) << proc_twobusy; | |
| 279 EXPECT_GE(proc_twobusy, 0.f); | |
| 280 EXPECT_LE(proc_twobusy, static_cast<float>(cpus)); | |
| 281 } | |
| 282 if (test_sys) { | |
| 283 LOG(LS_INFO) << "SystemLoad 2 CPU Busy: " | |
| 284 << std::setiosflags(std::ios_base::fixed) | |
| 285 << std::setprecision(2) << std::setw(6) << sys_twobusy; | |
| 286 EXPECT_GE(sys_twobusy, 0.f); | |
| 287 EXPECT_LE(sys_twobusy, static_cast<float>(cpus)); | |
| 288 } | |
| 289 } | |
| 290 | |
| 291 // Test5: CpuSampler with idle process after being busy. | |
| 292 Thread::SleepMs(kSettleTime); | |
| 293 sampler.GetProcessLoad(); | |
| 294 sampler.GetSystemLoad(); | |
| 295 | |
| 296 Thread::SleepMs(kIdleTime); | |
| 297 | |
| 298 if (test_proc) { | |
| 299 proc_idle = sampler.GetProcessLoad(); | |
| 300 } | |
| 301 if (test_sys) { | |
| 302 sys_idle = sampler.GetSystemLoad(); | |
| 303 } | |
| 304 if (test_proc) { | |
| 305 LOG(LS_INFO) << "ProcessLoad Idle: " | |
| 306 << std::setiosflags(std::ios_base::fixed) | |
| 307 << std::setprecision(2) << std::setw(6) << proc_idle; | |
| 308 EXPECT_GE(proc_idle, 0.f); | |
| 309 EXPECT_LE(proc_idle, proc_busy); | |
| 310 } | |
| 311 if (test_sys) { | |
| 312 LOG(LS_INFO) << "SystemLoad Idle: " | |
| 313 << std::setiosflags(std::ios_base::fixed) | |
| 314 << std::setprecision(2) << std::setw(6) << sys_idle; | |
| 315 EXPECT_GE(sys_idle, 0.f); | |
| 316 EXPECT_LE(sys_idle, static_cast<float>(cpus)); | |
| 317 } | |
| 318 } | |
| 319 | |
| 320 TEST(CpuMonitorTest, TestCpus) { | |
| 321 CpuSampler sampler; | |
| 322 EXPECT_TRUE(sampler.Init()); | |
| 323 int current_cpus = sampler.GetCurrentCpus(); | |
| 324 int cpus = sampler.GetMaxCpus(); | |
| 325 LOG(LS_INFO) << "Current Cpus: " << std::setw(9) << current_cpus; | |
| 326 LOG(LS_INFO) << "Maximum Cpus: " << std::setw(9) << cpus; | |
| 327 EXPECT_GT(cpus, 0); | |
| 328 EXPECT_LE(cpus, kMaxCpus); | |
| 329 EXPECT_GT(current_cpus, 0); | |
| 330 EXPECT_LE(current_cpus, cpus); | |
| 331 } | |
| 332 | |
| 333 #if defined(WEBRTC_WIN) | |
| 334 // Tests overall system CpuSampler using legacy OS fallback code if applicable. | |
| 335 TEST(CpuMonitorTest, TestGetSystemLoadForceFallback) { | |
| 336 TestCpuSampler(false, true, true); | |
| 337 } | |
| 338 #endif | |
| 339 | |
| 340 // Tests both process and system functions in use at same time. | |
| 341 TEST(CpuMonitorTest, TestGetBothLoad) { | |
| 342 TestCpuSampler(true, true, false); | |
| 343 } | |
| 344 | |
| 345 // Tests a query less than the interval produces the same value. | |
| 346 TEST(CpuMonitorTest, TestInterval) { | |
| 347 CpuSampler sampler; | |
| 348 EXPECT_TRUE(sampler.Init()); | |
| 349 | |
| 350 // Test1: Set interval to large value so sampler will not update. | |
| 351 sampler.set_load_interval(kLongInterval); | |
| 352 | |
| 353 sampler.GetProcessLoad(); | |
| 354 sampler.GetSystemLoad(); | |
| 355 | |
| 356 float proc_orig = sampler.GetProcessLoad(); | |
| 357 float sys_orig = sampler.GetSystemLoad(); | |
| 358 | |
| 359 Thread::SleepMs(kIdleTime); | |
| 360 | |
| 361 float proc_halftime = sampler.GetProcessLoad(); | |
| 362 float sys_halftime = sampler.GetSystemLoad(); | |
| 363 | |
| 364 EXPECT_EQ(proc_orig, proc_halftime); | |
| 365 EXPECT_EQ(sys_orig, sys_halftime); | |
| 366 } | |
| 367 | |
| 368 TEST(CpuMonitorTest, TestCpuMonitor) { | |
| 369 CpuMonitor monitor(Thread::Current()); | |
| 370 CpuLoadListener listener; | |
| 371 monitor.SignalUpdate.connect(&listener, &CpuLoadListener::OnCpuLoad); | |
| 372 EXPECT_TRUE(monitor.Start(10)); | |
| 373 // We have checked cpu load more than twice. | |
| 374 EXPECT_TRUE_WAIT(listener.count() > 2, 1000); | |
| 375 EXPECT_GT(listener.current_cpus(), 0); | |
| 376 EXPECT_GT(listener.cpus(), 0); | |
| 377 EXPECT_GE(listener.process_load(), .0f); | |
| 378 EXPECT_GE(listener.system_load(), .0f); | |
| 379 | |
| 380 monitor.Stop(); | |
| 381 // Wait 20 ms to ake sure all signals are delivered. | |
| 382 Thread::Current()->ProcessMessages(20); | |
| 383 int old_count = listener.count(); | |
| 384 Thread::Current()->ProcessMessages(20); | |
| 385 // Verfy no more siganls. | |
| 386 EXPECT_EQ(old_count, listener.count()); | |
| 387 } | |
| 388 | |
| 389 } // namespace rtc | |
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Chromium Code Reviews
Issue 1476453002:
Clean up PlatformThread. (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc.git@master