C++ ThreadInfo::Profile方法代码示例

GeckoSampler::~GeckoSampler()
{
  if (IsActive())
    Stop();

  SetActiveSampler(nullptr);

  // Destroy ThreadProfile for all threads
  {
    ::MutexAutoLock lock(*sRegisteredThreadsMutex);

    for (uint32_t i = 0; i < sRegisteredThreads->size(); i++) {
      ThreadInfo* info = sRegisteredThreads->at(i);
      ThreadProfile* profile = info->Profile();
      if (profile) {
        delete profile;
        info->SetProfile(nullptr);
      }
      // We've stopped profiling. We no longer need to retain
      // information for an old thread.
      if (info->IsPendingDelete()) {
        delete info;
        sRegisteredThreads->erase(sRegisteredThreads->begin() + i);
        i--;
      }
    }
  }
#if defined(XP_WIN)
  delete mIntelPowerGadget;
#endif
}

// Values are only honored on the first start
void mozilla_sampler_start(int aProfileEntries, int aInterval,
                           const char** aFeatures, uint32_t aFeatureCount)
{
  if (!stack_key_initialized)
    profiler_init();

  /* If the sampling interval was set using env vars, use that
     in preference to anything else. */
  if (sUnwindInterval > 0)
    aInterval = sUnwindInterval;

  PseudoStack *stack = tlsPseudoStack.get();
  if (!stack) {
    ASSERT(false);
    return;
  }

  // Reset the current state if the profiler is running
  profiler_stop();

  TableTicker* t;
  if (sps_version2()) {
    t = new BreakpadSampler(aInterval ? aInterval : PROFILE_DEFAULT_INTERVAL,
                           aProfileEntries ? aProfileEntries : PROFILE_DEFAULT_ENTRY,
                           aFeatures, aFeatureCount);
  } else {
    t = new TableTicker(aInterval ? aInterval : PROFILE_DEFAULT_INTERVAL,
                        aProfileEntries ? aProfileEntries : PROFILE_DEFAULT_ENTRY,
                        aFeatures, aFeatureCount);
  }
  tlsTicker.set(t);
  t->Start();
  if (t->ProfileJS()) {
      mozilla::MutexAutoLock lock(*Sampler::sRegisteredThreadsMutex);
      std::vector<ThreadInfo*> threads = t->GetRegisteredThreads();

      for (uint32_t i = 0; i < threads.size(); i++) {
        ThreadInfo* info = threads[i];
        ThreadProfile* thread_profile = info->Profile();
        if (!thread_profile) {
          continue;
        }
        thread_profile->GetPseudoStack()->enableJSSampling();
      }
  }

  sIsProfiling = true;

  nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
  if (os)
    os->NotifyObservers(nullptr, "profiler-started", nullptr);
}

// Values are only honored on the first start
void mozilla_sampler_start(int aProfileEntries, double aInterval,
                           const char** aFeatures, uint32_t aFeatureCount,
                           const char** aThreadNameFilters, uint32_t aFilterCount)

{
  LOG("BEGIN mozilla_sampler_start");

  if (!stack_key_initialized)
    profiler_init(nullptr);

  /* If the sampling interval was set using env vars, use that
     in preference to anything else. */
  if (sUnwindInterval > 0)
    aInterval = sUnwindInterval;

  /* If the entry count was set using env vars, use that, too: */
  if (sProfileEntries > 0)
    aProfileEntries = sProfileEntries;

  // Reset the current state if the profiler is running
  profiler_stop();

  GeckoSampler* t;
  t = new GeckoSampler(aInterval ? aInterval : PROFILE_DEFAULT_INTERVAL,
                      aProfileEntries ? aProfileEntries : PROFILE_DEFAULT_ENTRY,
                      aFeatures, aFeatureCount,
                      aThreadNameFilters, aFilterCount);

  tlsTicker.set(t);
  t->Start();
  if (t->ProfileJS() || t->InPrivacyMode()) {
      ::MutexAutoLock lock(*Sampler::sRegisteredThreadsMutex);
      std::vector<ThreadInfo*> threads = t->GetRegisteredThreads();

      for (uint32_t i = 0; i < threads.size(); i++) {
        ThreadInfo* info = threads[i];
        if (info->IsPendingDelete()) {
          continue;
        }
        ThreadProfile* thread_profile = info->Profile();
        if (!thread_profile) {
          continue;
        }
        thread_profile->GetPseudoStack()->reinitializeOnResume();
#ifndef SPS_STANDALONE
        if (t->ProfileJS()) {
          thread_profile->GetPseudoStack()->enableJSSampling();
        }
        if (t->InPrivacyMode()) {
          thread_profile->GetPseudoStack()->mPrivacyMode = true;
        }
#endif
      }
  }

#if defined(SPS_OS_android) && !defined(MOZ_WIDGET_GONK)
  if (t->ProfileJava()) {
    int javaInterval = aInterval;
    // Java sampling doesn't accuratly keep up with 1ms sampling
    if (javaInterval < 10) {
      aInterval = 10;
    }
    mozilla::widget::GeckoJavaSampler::StartJavaProfiling(javaInterval, 1000);
  }
#endif

#ifndef SPS_STANDALONE
  if (t->AddMainThreadIO()) {
    if (!sInterposeObserver) {
      // Lazily create IO interposer observer
      sInterposeObserver = new mozilla::ProfilerIOInterposeObserver();
    }
    mozilla::IOInterposer::Register(mozilla::IOInterposeObserver::OpAll,
                                    sInterposeObserver);
  }
#endif

  sIsProfiling = true;
#ifndef SPS_STANDALONE
  sIsGPUProfiling = t->ProfileGPU();
  sIsLayersDump = t->LayersDump();
  sIsDisplayListDump = t->DisplayListDump();
  sIsRestyleProfiling = t->ProfileRestyle();

  if (Sampler::CanNotifyObservers()) {
    nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
    if (os) {
      nsTArray<nsCString> featuresArray;
      nsTArray<nsCString> threadNameFiltersArray;

      for (size_t i = 0; i < aFeatureCount; ++i) {
        featuresArray.AppendElement(aFeatures[i]);
      }

      for (size_t i = 0; i < aFilterCount; ++i) {
        threadNameFiltersArray.AppendElement(aThreadNameFilters[i]);
      }

      nsCOMPtr<nsIProfilerStartParams> params =
//.........这里部分代码省略.........

// Values are only honored on the first start
void mozilla_sampler_start(int aProfileEntries, double aInterval,
                           const char** aFeatures, uint32_t aFeatureCount,
                           const char** aThreadNameFilters, uint32_t aFilterCount)

{
  LOG("BEGIN mozilla_sampler_start");

  if (!stack_key_initialized)
    profiler_init(nullptr);

  /* If the sampling interval was set using env vars, use that
     in preference to anything else. */
  if (sUnwindInterval > 0)
    aInterval = sUnwindInterval;

  /* If the entry count was set using env vars, use that, too: */
  if (sProfileEntries > 0)
    aProfileEntries = sProfileEntries;

  // Reset the current state if the profiler is running
  profiler_stop();

  TableTicker* t;
  t = new TableTicker(aInterval ? aInterval : PROFILE_DEFAULT_INTERVAL,
                      aProfileEntries ? aProfileEntries : PROFILE_DEFAULT_ENTRY,
                      aFeatures, aFeatureCount,
                      aThreadNameFilters, aFilterCount);
  if (t->HasUnwinderThread()) {
    // Create the unwinder thread.  ATM there is only one.
    uwt__init();
  }

  tlsTicker.set(t);
  t->Start();
  if (t->ProfileJS() || t->InPrivacyMode()) {
      mozilla::MutexAutoLock lock(*Sampler::sRegisteredThreadsMutex);
      std::vector<ThreadInfo*> threads = t->GetRegisteredThreads();

      for (uint32_t i = 0; i < threads.size(); i++) {
        ThreadInfo* info = threads[i];
        if (info->IsPendingDelete()) {
          continue;
        }
        ThreadProfile* thread_profile = info->Profile();
        if (!thread_profile) {
          continue;
        }
        thread_profile->GetPseudoStack()->reinitializeOnResume();
        if (t->ProfileJS()) {
          thread_profile->GetPseudoStack()->enableJSSampling();
        }
        if (t->InPrivacyMode()) {
          thread_profile->GetPseudoStack()->mPrivacyMode = true;
        }
      }
  }

#if defined(SPS_OS_android) && !defined(MOZ_WIDGET_GONK)
  if (t->ProfileJava()) {
    int javaInterval = aInterval;
    // Java sampling doesn't accuratly keep up with 1ms sampling
    if (javaInterval < 10) {
      aInterval = 10;
    }
    mozilla::widget::android::GeckoJavaSampler::StartJavaProfiling(javaInterval, 1000);
  }
#endif

  if (t->AddMainThreadIO()) {
    if (!sInterposeObserver) {
      // Lazily create IO interposer observer
      sInterposeObserver = new mozilla::ProfilerIOInterposeObserver();
    }
    mozilla::IOInterposer::Register(mozilla::IOInterposeObserver::OpAll,
                                    sInterposeObserver);
  }

  sIsProfiling = true;
  sIsGPUProfiling = t->ProfileGPU();

  if (Sampler::CanNotifyObservers()) {
    nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
    if (os)
      os->NotifyObservers(nullptr, "profiler-started", nullptr);
  }

  LOG("END   mozilla_sampler_start");
}