зеркало из https://github.com/mozilla/pjs.git
153 строки
4.4 KiB
C++
153 строки
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: sw=4 ts=4 et :
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla IPC.
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*
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* The Initial Developer of the Original Code is
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* Chris Jones <jones.chris.g@gmail.com>
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef mozilla_ipc_ProtocolUtils_h
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#define mozilla_ipc_ProtocolUtils_h 1
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#include "base/process.h"
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#include "base/process_util.h"
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#include "chrome/common/ipc_message_utils.h"
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#include "prenv.h"
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#include "mozilla/ipc/Shmem.h"
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// WARNING: this takes into account the private, special-message-type
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// enum in ipc_channel.h. They need to be kept in sync.
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namespace {
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enum {
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SHMEM_DESTROYED_MESSAGE_TYPE = kuint16max - 5,
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UNBLOCK_CHILD_MESSAGE_TYPE = kuint16max - 4,
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BLOCK_CHILD_MESSAGE_TYPE = kuint16max - 3,
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SHMEM_CREATED_MESSAGE_TYPE = kuint16max - 2,
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GOODBYE_MESSAGE_TYPE = kuint16max - 1,
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};
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}
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namespace mozilla {
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namespace ipc {
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// Used to pass references to protocol actors across the wire.
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// Actors created on the parent-side have a positive ID, and actors
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// allocated on the child side have a negative ID.
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struct ActorHandle
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{
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int mId;
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};
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template<class ListenerT>
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class /*NS_INTERFACE_CLASS*/ IProtocolManager
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{
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public:
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enum ActorDestroyReason {
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Deletion,
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AncestorDeletion,
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NormalShutdown,
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AbnormalShutdown
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};
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typedef base::ProcessHandle ProcessHandle;
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virtual int32 Register(ListenerT*) = 0;
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virtual int32 RegisterID(ListenerT*, int32) = 0;
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virtual ListenerT* Lookup(int32) = 0;
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virtual void Unregister(int32) = 0;
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virtual void RemoveManagee(int32, ListenerT*) = 0;
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virtual Shmem::SharedMemory* CreateSharedMemory(
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size_t, SharedMemory::SharedMemoryType, int32*) = 0;
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virtual bool AdoptSharedMemory(Shmem::SharedMemory*, int32*) = 0;
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virtual Shmem::SharedMemory* LookupSharedMemory(int32) = 0;
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virtual bool IsTrackingSharedMemory(Shmem::SharedMemory*) = 0;
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virtual bool DestroySharedMemory(Shmem&) = 0;
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// XXX odd duck, acknowledged
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virtual ProcessHandle OtherProcess() const = 0;
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};
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inline bool
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LoggingEnabled()
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{
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#if defined(DEBUG)
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return !!PR_GetEnv("MOZ_IPC_MESSAGE_LOG");
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#else
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return false;
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#endif
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}
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} // namespace ipc
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} // namespace mozilla
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namespace IPC {
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template <>
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struct ParamTraits<mozilla::ipc::ActorHandle>
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{
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typedef mozilla::ipc::ActorHandle paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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IPC::WriteParam(aMsg, aParam.mId);
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}
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static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
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{
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int id;
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if (IPC::ReadParam(aMsg, aIter, &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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static void Log(const paramType& aParam, std::wstring* aLog)
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{
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aLog->append(StringPrintf(L"(%d)", aParam.mId));
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}
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};
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} // namespace IPC
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#endif // mozilla_ipc_ProtocolUtils_h
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