// 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();
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");
}
