зеркало из https://github.com/mozilla/gecko-dev.git
154 строки
4.4 KiB
C++
154 строки
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "GraphRunner.h"
|
|
|
|
#include "GraphDriver.h"
|
|
#include "MediaTrackGraph.h"
|
|
#include "MediaTrackGraphImpl.h"
|
|
#include "mozilla/dom/WorkletThread.h"
|
|
#include "nsISupportsImpl.h"
|
|
#include "prthread.h"
|
|
#include "Tracing.h"
|
|
#include "audio_thread_priority.h"
|
|
|
|
namespace mozilla {
|
|
|
|
GraphRunner::GraphRunner(MediaTrackGraphImpl* aGraph,
|
|
already_AddRefed<nsIThread> aThread)
|
|
: Runnable("GraphRunner"),
|
|
mMonitor("GraphRunner::mMonitor"),
|
|
mGraph(aGraph),
|
|
mThreadState(ThreadState::Wait),
|
|
mThread(aThread) {
|
|
mThread->Dispatch(do_AddRef(this));
|
|
}
|
|
|
|
GraphRunner::~GraphRunner() {
|
|
MOZ_ASSERT(mThreadState == ThreadState::Shutdown);
|
|
}
|
|
|
|
/* static */
|
|
already_AddRefed<GraphRunner> GraphRunner::Create(MediaTrackGraphImpl* aGraph) {
|
|
nsCOMPtr<nsIThread> thread;
|
|
if (NS_WARN_IF(NS_FAILED(
|
|
NS_NewNamedThread("GraphRunner", getter_AddRefs(thread))))) {
|
|
return nullptr;
|
|
}
|
|
nsCOMPtr<nsISupportsPriority> supportsPriority = do_QueryInterface(thread);
|
|
MOZ_ASSERT(supportsPriority);
|
|
MOZ_ALWAYS_SUCCEEDS(
|
|
supportsPriority->SetPriority(nsISupportsPriority::PRIORITY_HIGHEST));
|
|
|
|
return do_AddRef(new GraphRunner(aGraph, thread.forget()));
|
|
}
|
|
|
|
void GraphRunner::Shutdown() {
|
|
{
|
|
MonitorAutoLock lock(mMonitor);
|
|
MOZ_ASSERT(mThreadState == ThreadState::Wait);
|
|
mThreadState = ThreadState::Shutdown;
|
|
mMonitor.Notify();
|
|
}
|
|
mThread->Shutdown();
|
|
}
|
|
|
|
auto GraphRunner::OneIteration(GraphTime aStateEnd, GraphTime aIterationEnd,
|
|
AudioMixer* aMixer) -> IterationResult {
|
|
TRACE();
|
|
|
|
MonitorAutoLock lock(mMonitor);
|
|
MOZ_ASSERT(mThreadState == ThreadState::Wait);
|
|
mIterationState = Some(IterationState(aStateEnd, aIterationEnd, aMixer));
|
|
|
|
#ifdef DEBUG
|
|
if (auto audioDriver = mGraph->CurrentDriver()->AsAudioCallbackDriver()) {
|
|
mAudioDriverThreadId = audioDriver->ThreadId();
|
|
} else if (auto clockDriver =
|
|
mGraph->CurrentDriver()->AsSystemClockDriver()) {
|
|
mClockDriverThread = clockDriver->Thread();
|
|
} else {
|
|
MOZ_CRASH("Unknown GraphDriver");
|
|
}
|
|
#endif
|
|
// Signal that mIterationState was updated
|
|
mThreadState = ThreadState::Run;
|
|
mMonitor.Notify();
|
|
// Wait for mIterationResult to update
|
|
do {
|
|
mMonitor.Wait();
|
|
} while (mThreadState == ThreadState::Run);
|
|
|
|
#ifdef DEBUG
|
|
mAudioDriverThreadId = std::thread::id();
|
|
mClockDriverThread = nullptr;
|
|
#endif
|
|
|
|
mIterationState = Nothing();
|
|
|
|
IterationResult result = std::move(mIterationResult);
|
|
mIterationResult = IterationResult();
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP GraphRunner::Run() {
|
|
atp_handle* handle =
|
|
atp_promote_current_thread_to_real_time(0, mGraph->GraphRate());
|
|
|
|
nsCOMPtr<nsIThreadInternal> threadInternal = do_QueryInterface(mThread);
|
|
threadInternal->SetObserver(mGraph);
|
|
|
|
MonitorAutoLock lock(mMonitor);
|
|
while (true) {
|
|
while (mThreadState == ThreadState::Wait) {
|
|
mMonitor.Wait(); // Wait for mIterationState to update or for shutdown
|
|
}
|
|
if (mThreadState == ThreadState::Shutdown) {
|
|
break;
|
|
}
|
|
MOZ_DIAGNOSTIC_ASSERT(mIterationState.isSome());
|
|
TRACE();
|
|
mIterationResult = mGraph->OneIterationImpl(mIterationState->StateEnd(),
|
|
mIterationState->IterationEnd(),
|
|
mIterationState->Mixer());
|
|
// Signal that mIterationResult was updated
|
|
mThreadState = ThreadState::Wait;
|
|
mMonitor.Notify();
|
|
}
|
|
|
|
if (handle) {
|
|
atp_demote_current_thread_from_real_time(handle);
|
|
}
|
|
|
|
dom::WorkletThread::DeleteCycleCollectedJSContext();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
bool GraphRunner::OnThread() {
|
|
return mThread->EventTarget()->IsOnCurrentThread();
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
bool GraphRunner::InDriverIteration(GraphDriver* aDriver) {
|
|
if (!OnThread()) {
|
|
return false;
|
|
}
|
|
|
|
if (auto audioDriver = aDriver->AsAudioCallbackDriver()) {
|
|
return audioDriver->ThreadId() == mAudioDriverThreadId;
|
|
}
|
|
|
|
if (auto clockDriver = aDriver->AsSystemClockDriver()) {
|
|
return clockDriver->Thread() == mClockDriverThread;
|
|
}
|
|
|
|
MOZ_CRASH("Unknown driver");
|
|
}
|
|
#endif
|
|
|
|
} // namespace mozilla
|