// static
already_AddRefed<ReadStream>
ReadStream::Create(const CacheReadStreamOrVoid& aReadStreamOrVoid)
{
if (aReadStreamOrVoid.type() == CacheReadStreamOrVoid::Tvoid_t) {
return nullptr;
}
return Create(aReadStreamOrVoid.get_CacheReadStream());
}
already_AddRefed<nsIInputStream>
CacheOpParent::DeserializeCacheStream(const CacheReadStreamOrVoid& aStreamOrVoid)
{
if (aStreamOrVoid.type() == CacheReadStreamOrVoid::Tvoid_t) {
return nullptr;
}
nsCOMPtr<nsIInputStream> stream;
const CacheReadStream& readStream = aStreamOrVoid.get_CacheReadStream();
// Option 1: A push stream actor was sent for nsPipe data
if (readStream.pushStreamParent()) {
MOZ_ASSERT(!readStream.controlParent());
CachePushStreamParent* pushStream =
static_cast<CachePushStreamParent*>(readStream.pushStreamParent());
stream = pushStream->TakeReader();
MOZ_ASSERT(stream);
return stream.forget();
}
// Option 2: One of our own ReadStreams was passed back to us with a stream
// control actor.
stream = ReadStream::Create(readStream);
if (stream) {
return stream.forget();
}
// Option 3: A stream was serialized using normal methods.
nsAutoTArray<FileDescriptor, 4> fds;
if (readStream.fds().type() ==
OptionalFileDescriptorSet::TPFileDescriptorSetChild) {
FileDescriptorSetParent* fdSetActor =
static_cast<FileDescriptorSetParent*>(readStream.fds().get_PFileDescriptorSetParent());
MOZ_ASSERT(fdSetActor);
fdSetActor->ForgetFileDescriptors(fds);
MOZ_ASSERT(!fds.IsEmpty());
if (!fdSetActor->Send__delete__(fdSetActor)) {
// child process is gone, warn and allow actor to clean up normally
NS_WARNING("Cache failed to delete fd set actor.");
}
}
return DeserializeInputStream(readStream.params(), fds);
}
already_AddRefed<nsIInputStream>
CacheOpParent::DeserializeCacheStream(const CacheReadStreamOrVoid& aStreamOrVoid)
{
if (aStreamOrVoid.type() == CacheReadStreamOrVoid::Tvoid_t) {
return nullptr;
}
nsCOMPtr<nsIInputStream> stream;
const CacheReadStream& readStream = aStreamOrVoid.get_CacheReadStream();
// Option 1: One of our own ReadStreams was passed back to us with a stream
// control actor.
stream = ReadStream::Create(readStream);
if (stream) {
return stream.forget();
}
// Option 2: A stream was serialized using normal methods or passed
// as a PSendStream actor. Use the standard method for
// extracting the resulting stream.
return DeserializeIPCStream(readStream.stream());
}
