зеркало из https://github.com/mozilla/pjs.git
188 строки
5.1 KiB
C++
188 строки
5.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
|
|
* vim: sw=4 ts=4 et :
|
|
*/
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is Mozilla IPC.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Chris Jones <jones.chris.g@gmail.com>
|
|
* Portions created by the Initial Developer are Copyright (C) 2009
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either the GNU General Public License Version 2 or later (the "GPL"), or
|
|
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#ifndef mozilla_ipc_ProtocolUtils_h
|
|
#define mozilla_ipc_ProtocolUtils_h 1
|
|
|
|
#include "base/process.h"
|
|
#include "base/process_util.h"
|
|
#include "chrome/common/ipc_message_utils.h"
|
|
|
|
#include "prenv.h"
|
|
|
|
#include "mozilla/ipc/Shmem.h"
|
|
|
|
// WARNING: this takes into account the private, special-message-type
|
|
// enum in ipc_channel.h. They need to be kept in sync.
|
|
namespace {
|
|
enum {
|
|
SHMEM_CREATED_MESSAGE_TYPE = kuint16max - 2,
|
|
GOODBYE_MESSAGE_TYPE = kuint16max - 1,
|
|
};
|
|
}
|
|
|
|
namespace mozilla {
|
|
namespace ipc {
|
|
|
|
|
|
// Used to pass references to protocol actors across the wire.
|
|
// Actors created on the parent-side have a positive ID, and actors
|
|
// allocated on the child side have a negative ID.
|
|
struct ActorHandle
|
|
{
|
|
int mId;
|
|
};
|
|
|
|
template<class ListenerT>
|
|
class /*NS_INTERFACE_CLASS*/ IProtocolManager
|
|
{
|
|
public:
|
|
enum ActorDestroyReason {
|
|
Deletion,
|
|
AncestorDeletion,
|
|
NormalShutdown,
|
|
AbnormalShutdown
|
|
};
|
|
|
|
typedef base::ProcessHandle ProcessHandle;
|
|
|
|
virtual int32 Register(ListenerT*) = 0;
|
|
virtual int32 RegisterID(ListenerT*, int32) = 0;
|
|
virtual ListenerT* Lookup(int32) = 0;
|
|
virtual void Unregister(int32) = 0;
|
|
// XXX odd duck, acknowledged
|
|
virtual ProcessHandle OtherProcess() const = 0;
|
|
};
|
|
|
|
|
|
// This message is automatically sent by IPDL-generated code when a
|
|
// new shmem segment is allocated. It should never be used directly.
|
|
class __internal__ipdl__ShmemCreated : public IPC::Message
|
|
{
|
|
private:
|
|
typedef Shmem::id_t id_t;
|
|
typedef Shmem::SharedMemoryHandle SharedMemoryHandle;
|
|
|
|
public:
|
|
enum { ID = SHMEM_CREATED_MESSAGE_TYPE };
|
|
|
|
__internal__ipdl__ShmemCreated(
|
|
int32 routingId,
|
|
const SharedMemoryHandle& aHandle,
|
|
const id_t& aIPDLId,
|
|
const size_t& aSize) :
|
|
IPC::Message(routingId, ID, PRIORITY_NORMAL)
|
|
{
|
|
IPC::WriteParam(this, aHandle);
|
|
IPC::WriteParam(this, aIPDLId);
|
|
IPC::WriteParam(this, aSize);
|
|
}
|
|
|
|
static bool Read(const Message* msg,
|
|
SharedMemoryHandle* aHandle,
|
|
id_t* aIPDLId,
|
|
size_t* aSize)
|
|
{
|
|
void* iter = 0;
|
|
if (!IPC::ReadParam(msg, &iter, aHandle))
|
|
return false;
|
|
if (!IPC::ReadParam(msg, &iter, aIPDLId))
|
|
return false;
|
|
if (!IPC::ReadParam(msg, &iter, aSize))
|
|
return false;
|
|
msg->EndRead(iter);
|
|
return true;
|
|
}
|
|
|
|
void Log(const std::string& aPrefix,
|
|
FILE* aOutf) const
|
|
{
|
|
fputs("(special ShmemCreated msg)", aOutf);
|
|
}
|
|
};
|
|
|
|
|
|
inline bool
|
|
LoggingEnabled()
|
|
{
|
|
#if defined(DEBUG)
|
|
return !!PR_GetEnv("MOZ_IPC_MESSAGE_LOG");
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
|
|
} // namespace ipc
|
|
} // namespace mozilla
|
|
|
|
|
|
namespace IPC {
|
|
|
|
template <>
|
|
struct ParamTraits<mozilla::ipc::ActorHandle>
|
|
{
|
|
typedef mozilla::ipc::ActorHandle paramType;
|
|
|
|
static void Write(Message* aMsg, const paramType& aParam)
|
|
{
|
|
IPC::WriteParam(aMsg, aParam.mId);
|
|
}
|
|
|
|
static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
|
|
{
|
|
int id;
|
|
if (IPC::ReadParam(aMsg, aIter, &id)) {
|
|
aResult->mId = id;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void Log(const paramType& aParam, std::wstring* aLog)
|
|
{
|
|
aLog->append(StringPrintf(L"(%d)", aParam.mId));
|
|
}
|
|
};
|
|
|
|
} // namespace IPC
|
|
|
|
|
|
#endif // mozilla_ipc_ProtocolUtils_h
|