C++ AssertIsOnOwningThread函数代码示例

nsresult
MediaEngineRemoteVideoSource::Stop(mozilla::SourceMediaStream* aSource,
                                   mozilla::TrackID aID)
{
  LOG((__PRETTY_FUNCTION__));
  AssertIsOnOwningThread();
  {
    MonitorAutoLock lock(mMonitor);

    // Drop any cached image so we don't start with a stale image on next
    // usage.  Also, gfx gets very upset if these are held until this object
    // is gc'd in final-cc during shutdown (bug 1374164)
    mImage = nullptr;
    // we drop mImageContainer only in MediaEngineCaptureVideoSource::Shutdown()

    size_t i = mSources.IndexOf(aSource);
    if (i == mSources.NoIndex) {
      // Already stopped - this is allowed
      return NS_OK;
    }

    MOZ_ASSERT(mSources.Length() == mPrincipalHandles.Length());
    mSources.RemoveElementAt(i);
    mPrincipalHandles.RemoveElementAt(i);

    aSource->EndTrack(aID);

    if (!mSources.IsEmpty()) {
      return NS_OK;
    }
    if (mState != kStarted) {
      return NS_ERROR_FAILURE;
    }

    mState = kStopped;
  }

  mozilla::camera::GetChildAndCall(
    &mozilla::camera::CamerasChild::StopCapture,
    mCapEngine, mCaptureIndex);

  return NS_OK;
}

already_AddRefed<IDBTransaction>
IDBDatabase::Transaction(const StringOrStringSequence& aStoreNames,
                         IDBTransactionMode aMode,
                         ErrorResult& aRv)
{
  AssertIsOnOwningThread();

  aRv.MightThrowJSException();

  if (aMode == IDBTransactionMode::Readwriteflush &&
      !IndexedDatabaseManager::ExperimentalFeaturesEnabled()) {
    // Pretend that this mode doesn't exist. We don't have a way to annotate
    // certain enum values as depending on preferences so we just duplicate the
    // normal exception generation here.
    ThreadsafeAutoJSContext cx;

    // Disable any automatic error reporting that might be set up so that we
    // can grab the exception object.
    AutoForceSetExceptionOnContext forceExn(cx);

    MOZ_ALWAYS_FALSE(
      ThrowErrorMessage(cx,
                        MSG_INVALID_ENUM_VALUE,
                        "Argument 2 of IDBDatabase.transaction",
                        "readwriteflush",
                        "IDBTransactionMode"));
    MOZ_ASSERT(JS_IsExceptionPending(cx));

    JS::Rooted<JS::Value> exception(cx);
    MOZ_ALWAYS_TRUE(JS_GetPendingException(cx, &exception));

    aRv.ThrowJSException(cx, exception);
    return nullptr;
  }

  RefPtr<IDBTransaction> transaction;
  aRv = Transaction(aStoreNames, aMode, getter_AddRefs(transaction));
  if (NS_WARN_IF(aRv.Failed())) {
    return nullptr;
  }

  return transaction.forget();
}

NS_IMPL_CYCLE_COLLECTION_UNLINK_END

JSObject*
IDBCursor::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
  AssertIsOnOwningThread();

  switch (mType) {
    case Type_ObjectStore:
    case Type_Index:
      return IDBCursorWithValueBinding::Wrap(aCx, this, aGivenProto);

    case Type_ObjectStoreKey:
    case Type_IndexKey:
      return IDBCursorBinding::Wrap(aCx, this, aGivenProto);

    default:
      MOZ_CRASH("Bad type!");
  }
}

nsresult
MediaEngineWebRTCMicrophoneSource::Deallocate(AllocationHandle* aHandle)
{
  AssertIsOnOwningThread();

  Super::Deallocate(aHandle);

  if (!mRegisteredHandles.Length()) {
    // If empty, no callbacks to deliver data should be occuring
    if (mState != kStopped && mState != kAllocated) {
      return NS_ERROR_FAILURE;
    }

    FreeChannel();
    LOG(("Audio device %d deallocated", mCapIndex));
  } else {
    LOG(("Audio device %d deallocated but still in use", mCapIndex));
  }
  return NS_OK;
}

void
FetchStream::Close()
{
  AssertIsOnOwningThread();

  MutexAutoLock lock(mMutex);

  if (mState == eClosed) {
    return;
  }

  AutoJSAPI jsapi;
  if (NS_WARN_IF(!jsapi.Init(mGlobal))) {
    ReleaseObjects(lock);
    return;
  }

  JSContext* cx = jsapi.cx();
  JS::Rooted<JSObject*> stream(cx, mStreamHolder->ReadableStreamBody());
  CloseAndReleaseObjects(cx, lock, stream);
}

already_AddRefed<DOMStringList>
IDBDatabase::ObjectStoreNames() const
{
  AssertIsOnOwningThread();
  MOZ_ASSERT(mSpec);

  const nsTArray<ObjectStoreSpec>& objectStores = mSpec->objectStores();

  RefPtr<DOMStringList> list = new DOMStringList();

  if (!objectStores.IsEmpty()) {
    nsTArray<nsString>& listNames = list->StringArray();
    listNames.SetCapacity(objectStores.Length());

    for (uint32_t index = 0; index < objectStores.Length(); index++) {
      listNames.InsertElementSorted(objectStores[index].metadata().name());
    }
  }

  return list.forget();
}

bool
QuotaUsageRequestChild::Recv__delete__(const UsageRequestResponse& aResponse)
{
  AssertIsOnOwningThread();
  MOZ_ASSERT(mRequest);

  switch (aResponse.type()) {
    case UsageRequestResponse::Tnsresult:
      HandleResponse(aResponse.get_nsresult());
      break;

    case UsageRequestResponse::TUsageResponse:
      HandleResponse(aResponse.get_UsageResponse());
      break;

    default:
      MOZ_CRASH("Unknown response type!");
  }

  return true;
}

nsresult
MediaEngineWebRTCMicrophoneSource::Stop(SourceMediaStream *aSource, TrackID aID)
{
  AssertIsOnOwningThread();
  {
    MonitorAutoLock lock(mMonitor);

    if (!mSources.RemoveElement(aSource)) {
      // Already stopped - this is allowed
      return NS_OK;
    }

    aSource->EndTrack(aID);

    if (!mSources.IsEmpty()) {
      return NS_OK;
    }
    if (mState != kStarted) {
      return NS_ERROR_FAILURE;
    }
    if (!mVoEBase) {
      return NS_ERROR_FAILURE;
    }

    mState = kStopped;
  }

  mAudioInput->StopRecording(aSource->Graph(), mListener);

  mVoERender->DeRegisterExternalMediaProcessing(mChannel, webrtc::kRecordingPerChannel);

  if (mVoEBase->StopSend(mChannel)) {
    return NS_ERROR_FAILURE;
  }
  if (mVoEBase->StopReceive(mChannel)) {
    return NS_ERROR_FAILURE;
  }
  return NS_OK;
}

bool
IDBTransaction::IsOpen() const
{
  AssertIsOnOwningThread();

  // If we haven't started anything then we're open.
  if (mReadyState == IDBTransaction::INITIAL) {
    return true;
  }

  // If we've already started then we need to check to see if we still have the
  // mCreating flag set. If we do (i.e. we haven't returned to the event loop
  // from the time we were created) then we are open. Otherwise check the
  // currently running transaction to see if it's the same. We only allow other
  // requests to be made if this transaction is currently running.
  if (mReadyState == IDBTransaction::LOADING &&
      (mCreating || GetCurrent() == this)) {
    return true;
  }

  return false;
}

bool
DeviceStorageFileSystem::IsSafeDirectory(Directory* aDir) const
{
  AssertIsOnOwningThread();
  MOZ_ASSERT(aDir);

  ErrorResult rv;
  RefPtr<FileSystemBase> fs = aDir->GetFileSystem(rv);
  if (NS_WARN_IF(rv.Failed())) {
    rv.SuppressException();
    return false;
  }

  nsAutoString fsSerialization;
  fs->SerializeDOMPath(fsSerialization);

  nsAutoString thisSerialization;
  SerializeDOMPath(thisSerialization);

  // Check if the given directory is from this storage.
  return fsSerialization == thisSerialization;
}

void
IDBKeyRange::GetUpper(JSContext* aCx, JS::MutableHandle<JS::Value> aResult,
                      ErrorResult& aRv)
{
  AssertIsOnOwningThread();

  if (!mHaveCachedUpperVal) {
    if (!mRooted) {
      mozilla::HoldJSObjects(this);
      mRooted = true;
    }

    aRv = Upper().ToJSVal(aCx, mCachedUpperVal);
    if (aRv.Failed()) {
      return;
    }

    mHaveCachedUpperVal = true;
  }

  aResult.set(mCachedUpperVal);
}

void
IDBRequest::DispatchNonTransactionError(nsresult aErrorCode)
{
  AssertIsOnOwningThread();
  MOZ_ASSERT(NS_FAILED(aErrorCode));
  MOZ_ASSERT(NS_ERROR_GET_MODULE(aErrorCode) == NS_ERROR_MODULE_DOM_INDEXEDDB);

  SetError(aErrorCode);

  // Make an error event and fire it at the target.
  nsCOMPtr<nsIDOMEvent> event =
    CreateGenericEvent(this,
                       nsDependentString(kErrorEventType),
                       eDoesBubble,
                       eCancelable);
  MOZ_ASSERT(event);

  bool ignored;
  if (NS_FAILED(DispatchEvent(event, &ignored))) {
    NS_WARNING("Failed to dispatch event!");
  }
}

void
IDBDatabase::RefreshSpec(bool aMayDelete)
{
  AssertIsOnOwningThread();

  class MOZ_STACK_CLASS Helper final
  {
  public:
    static PLDHashOperator
    RefreshTransactionsSpec(nsPtrHashKey<IDBTransaction>* aTransaction,
                            void* aClosure)
    {
      MOZ_ASSERT(aTransaction);
      aTransaction->GetKey()->AssertIsOnOwningThread();
      MOZ_ASSERT(aClosure);

      bool mayDelete = *static_cast<bool*>(aClosure);

      nsRefPtr<IDBTransaction> transaction = aTransaction->GetKey();
      transaction->RefreshSpec(mayDelete);

      return PL_DHASH_NEXT;
    }

void
IDBFileHandle::HandleCompleteOrAbort(bool aAborted)
{
  AssertIsOnOwningThread();

  FileHandleBase::HandleCompleteOrAbort(aAborted);

  nsCOMPtr<nsIDOMEvent> event;
  if (aAborted) {
    event = CreateGenericEvent(this, nsDependentString(kAbortEventType),
                               eDoesBubble, eNotCancelable);
  } else {
    event = CreateGenericEvent(this, nsDependentString(kCompleteEventType),
                               eDoesNotBubble, eNotCancelable);
  }
  if (NS_WARN_IF(!event)) {
    return;
  }

  bool dummy;
  if (NS_FAILED(DispatchEvent(event, &dummy))) {
    NS_WARNING("DispatchEvent failed!");
  }
}

nsresult
MediaEngineGonkVideoSource::Deallocate(AllocationHandle* aHandle)
{
  LOG((__FUNCTION__));
  AssertIsOnOwningThread();
  MOZ_ASSERT(!aHandle);

  bool empty;
  {
    MonitorAutoLock lock(mMonitor);
    empty = mSources.IsEmpty();
  }
  if (empty) {

    ReentrantMonitorAutoEnter sync(mCallbackMonitor);

    if (mState != kStopped && mState != kAllocated) {
      return NS_ERROR_FAILURE;
    }

    // We do not register success callback here

    NS_DispatchToMainThread(WrapRunnable(RefPtr<MediaEngineGonkVideoSource>(this),
                                         &MediaEngineGonkVideoSource::DeallocImpl));
    mCallbackMonitor.Wait();
    if (mState != kReleased) {
      return NS_ERROR_FAILURE;
    }

    mState = kReleased;
    LOG(("Video device %d deallocated", mCaptureIndex));
  } else {
    LOG(("Video device %d deallocated but still in use", mCaptureIndex));
  }
  return NS_OK;
}