gecko-dev/ipc/glue/ProcessUtils.h

80 строки
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#ifndef mozilla_ipc_ProcessUtils_h
#define mozilla_ipc_ProcessUtils_h
#include "FileDescriptor.h"
#include "base/shared_memory.h"
namespace mozilla {
namespace ipc {
class GeckoChildProcessHost;
// You probably should call ContentChild::SetProcessName instead of calling
// this directly.
void SetThisProcessName(const char* aName);
class SharedPreferenceSerializer final {
public:
SharedPreferenceSerializer();
SharedPreferenceSerializer(SharedPreferenceSerializer&& aOther);
~SharedPreferenceSerializer();
bool SerializeToSharedMemory();
size_t GetPrefMapSize() const { return mPrefMapSize; }
size_t GetPrefsLength() const { return mPrefsLength; }
const UniqueFileHandle& GetPrefsHandle() const { return mPrefsHandle; }
const UniqueFileHandle& GetPrefMapHandle() const { return mPrefMapHandle; }
void AddSharedPrefCmdLineArgs(GeckoChildProcessHost& procHost,
std::vector<std::string>& aExtraOpts) const;
private:
DISALLOW_COPY_AND_ASSIGN(SharedPreferenceSerializer);
size_t mPrefMapSize;
size_t mPrefsLength;
UniqueFileHandle mPrefMapHandle;
UniqueFileHandle mPrefsHandle;
};
class SharedPreferenceDeserializer final {
public:
SharedPreferenceDeserializer();
~SharedPreferenceDeserializer();
bool DeserializeFromSharedMemory(char* aPrefsHandleStr,
char* aPrefMapHandleStr, char* aPrefsLenStr,
char* aPrefMapSizeStr);
const base::SharedMemoryHandle& GetPrefsHandle() const;
const FileDescriptor& GetPrefMapHandle() const;
private:
DISALLOW_COPY_AND_ASSIGN(SharedPreferenceDeserializer);
Maybe<base::SharedMemoryHandle> mPrefsHandle;
Maybe<FileDescriptor> mPrefMapHandle;
Maybe<size_t> mPrefsLen;
Maybe<size_t> mPrefMapSize;
base::SharedMemory mShmem;
};
#ifdef ANDROID
// Android doesn't use -prefsHandle or -prefMapHandle. It gets those FDs
// another way.
void SetPrefsFd(int aFd);
void SetPrefMapFd(int aFd);
#endif
} // namespace ipc
} // namespace mozilla
#endif // ifndef mozilla_ipc_ProcessUtils_h