gecko/ipc/glue/GeckoChildProcessHost.h
2012-07-30 17:20:58 +03:00

122 lines
3.4 KiB
C++

/* 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 __IPC_GLUE_GECKOCHILDPROCESSHOST_H__
#define __IPC_GLUE_GECKOCHILDPROCESSHOST_H__
#include "base/file_path.h"
#include "base/process_util.h"
#include "base/scoped_ptr.h"
#include "base/waitable_event.h"
#include "chrome/common/child_process_host.h"
#include "mozilla/Monitor.h"
#include "nsXULAppAPI.h" // for GeckoProcessType
#include "nsString.h"
namespace mozilla {
namespace ipc {
class GeckoChildProcessHost : public ChildProcessHost
{
protected:
typedef mozilla::Monitor Monitor;
public:
typedef base::ProcessHandle ProcessHandle;
GeckoChildProcessHost(GeckoProcessType aProcessType=GeckoProcessType_Default,
base::WaitableEventWatcher::Delegate* aDelegate=nullptr);
~GeckoChildProcessHost();
static nsresult GetArchitecturesForBinary(const char *path, uint32 *result);
static uint32 GetSupportedArchitecturesForProcessType(GeckoProcessType type);
bool SyncLaunch(std::vector<std::string> aExtraOpts=std::vector<std::string>(),
int32 timeoutMs=0,
base::ProcessArchitecture arch=base::GetCurrentProcessArchitecture());
bool AsyncLaunch(std::vector<std::string> aExtraOpts=std::vector<std::string>());
bool PerformAsyncLaunch(std::vector<std::string> aExtraOpts=std::vector<std::string>(),
base::ProcessArchitecture arch=base::GetCurrentProcessArchitecture());
virtual void OnChannelConnected(int32 peer_pid);
virtual void OnMessageReceived(const IPC::Message& aMsg);
virtual void OnChannelError();
virtual void GetQueuedMessages(std::queue<IPC::Message>& queue);
void InitializeChannel();
virtual bool CanShutdown() { return true; }
virtual void OnWaitableEventSignaled(base::WaitableEvent *event);
IPC::Channel* GetChannel() {
return channelp();
}
base::WaitableEvent* GetShutDownEvent() {
return GetProcessEvent();
}
ProcessHandle GetChildProcessHandle() {
return mChildProcessHandle;
}
#ifdef XP_MACOSX
task_t GetChildTask() {
return mChildTask;
}
#endif
protected:
GeckoProcessType mProcessType;
Monitor mMonitor;
bool mLaunched;
bool mChannelInitialized;
FilePath mProcessPath;
static PRInt32 mChildCounter;
#ifdef XP_WIN
void InitWindowsGroupID();
nsString mGroupId;
#endif
#if defined(OS_POSIX)
base::file_handle_mapping_vector mFileMap;
#endif
base::WaitableEventWatcher::Delegate* mDelegate;
ProcessHandle mChildProcessHandle;
#if defined(OS_MACOSX)
task_t mChildTask;
#endif
private:
DISALLOW_EVIL_CONSTRUCTORS(GeckoChildProcessHost);
// Does the actual work for AsyncLaunch, on the IO thread.
bool PerformAsyncLaunchInternal(std::vector<std::string>& aExtraOpts,
base::ProcessArchitecture arch);
// In between launching the subprocess and handing off its IPC
// channel, there's a small window of time in which *we* might still
// be the channel listener, and receive messages. That's bad
// because we have no idea what to do with those messages. So queue
// them here until we hand off the eventual listener.
//
// FIXME/cjones: this strongly indicates bad design. Shame on us.
std::queue<IPC::Message> mQueue;
};
} /* namespace ipc */
} /* namespace mozilla */
#endif /* __IPC_GLUE_GECKOCHILDPROCESSHOST_H__ */