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bdb401316d
This requires quite a bit of piping to get the ChildID passed everywhere where we currently pass the pid in IPC. This is done by adding a new struct type (EndpointProcInfo), which is passed around instead of OtherPid in these places, and contains the full pid. In most cases, it was a fairly painless change to move over, however in some cases, more complex changes were required, as the pid was being stored previously in something like an Atomic<...>, and needed to be switched to using a mutex-protected value. In the future, it may be possible to remove OtherPid from IPDL actors once everything is migrated to ChildID, but we're still a long way off from that, so for now we unfortunately need to pass both around. Differential Revision: https://phabricator.services.mozilla.com/D217118
137 lines
3.9 KiB
C++
137 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
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#ifndef IPC_GLUE_PROTOCOLMESSAGEUTILS_H
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#define IPC_GLUE_PROTOCOLMESSAGEUTILS_H
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#include <stdint.h>
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#include <string>
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#include "base/string_util.h"
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#include "chrome/common/ipc_channel.h"
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#include "chrome/common/ipc_message_utils.h"
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#include "ipc/EnumSerializer.h"
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#include "mozilla/Assertions.h"
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#include "mozilla/ipc/Endpoint.h"
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#include "mozilla/ipc/ProtocolUtils.h"
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class PickleIterator;
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namespace mozilla::ipc {
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class FileDescriptor;
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template <class PFooSide>
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class Endpoint;
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template <class PFooSide>
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class ManagedEndpoint;
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template <typename P>
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struct IPDLParamTraits;
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} // namespace mozilla::ipc
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namespace IPC {
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class Message;
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class MessageReader;
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class MessageWriter;
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template <>
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struct ParamTraits<Channel::Mode>
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: ContiguousEnumSerializerInclusive<Channel::Mode, Channel::MODE_SERVER,
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Channel::MODE_CLIENT> {};
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template <>
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struct ParamTraits<IPCMessageStart>
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: ContiguousEnumSerializer<IPCMessageStart, IPCMessageStart(0),
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LastMsgIndex> {};
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template <>
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struct ParamTraits<mozilla::ipc::ActorHandle> {
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typedef mozilla::ipc::ActorHandle paramType;
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static void Write(MessageWriter* aWriter, const paramType& aParam) {
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IPC::WriteParam(aWriter, aParam.mId);
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}
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static bool Read(MessageReader* aReader, paramType* aResult) {
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int id;
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if (IPC::ReadParam(aReader, &id)) {
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aResult->mId = id;
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return true;
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}
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return false;
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}
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};
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template <>
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struct ParamTraits<mozilla::ipc::UntypedEndpoint> {
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using paramType = mozilla::ipc::UntypedEndpoint;
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static void Write(MessageWriter* aWriter, paramType&& aParam);
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static bool Read(MessageReader* aReader, paramType* aResult);
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};
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template <class PFooSide>
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struct ParamTraits<mozilla::ipc::Endpoint<PFooSide>>
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: ParamTraits<mozilla::ipc::UntypedEndpoint> {};
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template <>
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struct ParamTraits<mozilla::ipc::EndpointProcInfo> {
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using paramType = mozilla::ipc::EndpointProcInfo;
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static void Write(MessageWriter* aWriter, const paramType& aParam) {
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IPC::WriteParam(aWriter, aParam.mPid);
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IPC::WriteParam(aWriter, aParam.mChildID);
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}
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static bool Read(MessageReader* aReader, paramType* aResult) {
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return IPC::ReadParam(aReader, &aResult->mPid) &&
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IPC::ReadParam(aReader, &aResult->mChildID);
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}
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};
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} // namespace IPC
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namespace mozilla::ipc {
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template <>
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struct IPDLParamTraits<UntypedManagedEndpoint> {
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using paramType = UntypedManagedEndpoint;
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static void Write(IPC::MessageWriter* aWriter, IProtocol* aActor,
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paramType&& aParam);
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static bool Read(IPC::MessageReader* aReader, IProtocol* aActor,
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paramType* aResult);
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};
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template <class PFooSide>
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struct IPDLParamTraits<ManagedEndpoint<PFooSide>> {
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using paramType = ManagedEndpoint<PFooSide>;
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static void Write(IPC::MessageWriter* aWriter, IProtocol* aActor,
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paramType&& aParam) {
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IPDLParamTraits<UntypedManagedEndpoint>::Write(aWriter, aActor,
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std::move(aParam));
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}
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static bool Read(IPC::MessageReader* aReader, IProtocol* aActor,
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paramType* aResult) {
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return IPDLParamTraits<UntypedManagedEndpoint>::Read(aReader, aActor,
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aResult);
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}
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};
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template <>
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struct IPDLParamTraits<FileDescriptor> {
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typedef FileDescriptor paramType;
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static void Write(IPC::MessageWriter* aWriter, IProtocol* aActor,
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const paramType& aParam);
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static bool Read(IPC::MessageReader* aReader, IProtocol* aActor,
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paramType* aResult);
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};
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} // namespace mozilla::ipc
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#endif // IPC_GLUE_PROTOCOLMESSAGEUTILS_H
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