gecko-dev/ipc/glue/IPCStream.ipdlh

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/* 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 http://mozilla.org/MPL/2.0/. */
include protocol PChildToParentStream;
include protocol PParentToChildStream;
include BlobTypes;
include InputStreamParams;
include ProtocolTypes;
namespace mozilla {
namespace ipc {
// Do not use this directly. See IPCStream below.
struct InputStreamParamsWithFds
{
InputStreamParams stream;
OptionalFileDescriptorSet optionalFds;
};
union IPCRemoteStreamType
{
PChildToParentStream;
PParentToChildStream;
};
struct IPCRemoteStream
{
// If this is true, the stream will send data only when the first operation
// is done on the destination side. The benefit of this is that we do not
// send data if not needed. On the other hand, it could have a performance
// issue.
bool delayedStart;
IPCRemoteStreamType stream;
int64_t length;
};
// Use IPCStream or OptionalIPCStream in your ipdl to represent serialized
// nsIInputStreams. Then use AutoIPCStream from IPCStreamUtils.h to perform
// the serialization.
union IPCStream
{
InputStreamParamsWithFds;
IPCRemoteStream;
};
union OptionalIPCStream
{
IPCStream;
void_t;
};
} // namespace ipc
} // namespace mozilla