void mozilla_sampler_stop()
{
if (!stack_key_initialized)
profiler_init(nullptr);
TableTicker *t = tlsTicker.get();
if (!t) {
return;
}
bool disableJS = t->ProfileJS();
bool unwinderThreader = t->HasUnwinderThread();
// Shut down and reap the unwinder thread. We have to do this
// before stopping the sampler, so as to guarantee that the unwinder
// thread doesn't try to access memory that the subsequent call to
// mozilla_sampler_stop causes to be freed.
if (unwinderThreader) {
uwt__stop();
}
t->Stop();
delete t;
tlsTicker.set(nullptr);
if (disableJS) {
PseudoStack *stack = tlsPseudoStack.get();
ASSERT(stack != nullptr);
stack->disableJSSampling();
}
if (unwinderThreader) {
uwt__deinit();
}
mozilla::IOInterposer::Unregister(mozilla::IOInterposeObserver::OpAll,
sInterposeObserver);
sIsProfiling = false;
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
if (os)
os->NotifyObservers(nullptr, "profiler-stopped", nullptr);
}
void mozilla_sampler_shutdown()
{
sInitCount--;
if (sInitCount > 0)
return;
// Save the profile on shutdown if requested.
TableTicker *t = tlsTicker.get();
if (t) {
const char *val = PR_GetEnv("MOZ_PROFILER_SHUTDOWN");
if (val) {
std::ofstream stream;
stream.open(val);
if (stream.is_open()) {
t->ToStreamAsJSON(stream);
stream.close();
}
}
}
// Shut down and reap the unwinder thread. We have to do this
// before stopping the sampler, so as to guarantee that the unwinder
// thread doesn't try to access memory that the subsequent call to
// mozilla_sampler_stop causes to be freed.
if (sps_version2()) {
uwt__deinit();
}
profiler_stop();
Sampler::Shutdown();
// We can't delete the Stack because we can be between a
// sampler call_enter/call_exit point.
// TODO Need to find a safe time to delete Stack
}
