gecko/ipc/glue/GeckoThread.h

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/* ***** 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 Plugin App.
*
* The Initial Developer of the Original Code is
* Ben Turner <bent.mozilla@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 __IPC_GLUE_GECKOTHREAD_H__
#define __IPC_GLUE_GECKOTHREAD_H__
#include "base/thread.h"
#include "base/lock.h"
#include "base/process.h"
#include "chrome/common/child_thread.h"
#include "nsDebug.h"
#include "mozilla/ipc/ScopedXREEmbed.h"
class NotificationService;
namespace mozilla {
namespace ipc {
inline void AssertIOThread()
{
NS_ASSERTION(MessageLoop::TYPE_IO == MessageLoop::current()->type(),
"should be on the IO thread!");
}
class GeckoThread : public ChildThread
{
public:
typedef base::ProcessHandle ProcessHandle;
GeckoThread(ProcessHandle aParentProcessHandle)
: ChildThread(base::Thread::Options(
MessageLoop::TYPE_MOZILLA_CHILD, // message loop type
0, // stack size
false)), // wait for Init()?
mParentProcessHandle(aParentProcessHandle)
{ }
protected:
virtual void OnControlMessageReceived(const IPC::Message& aMessage);
ProcessHandle GetParentProcessHandle() {
return mParentProcessHandle;
}
// Thread implementation:
virtual void Init();
virtual void CleanUp();
ScopedXREEmbed mXREEmbed;
private:
ProcessHandle mParentProcessHandle;
DISALLOW_EVIL_CONSTRUCTORS(GeckoThread);
};
// Copied from browser_process_impl.cc, modified slightly.
class BrowserProcessSubThread : public base::Thread
{
public:
// An enumeration of the well-known threads.
enum ID {
IO,
//FILE,
//DB,
//HISTORY,
#if defined(OS_LINUX)
// This thread has a second connection to the X server and is used
// to process UI requests when routing the request to the UI
// thread would risk deadlock.
BACKGROUND_X11,
#endif
// This identifier does not represent a thread. Instead it counts
// the number of well-known threads. Insert new well-known
// threads before this identifier.
ID_COUNT
};
explicit BrowserProcessSubThread(ID aId);
~BrowserProcessSubThread();
static MessageLoop* GetMessageLoop(ID identifier);
protected:
virtual void Init();
virtual void CleanUp();
private:
// The identifier of this thread. Only one thread can exist with a given
// identifier at a given time.
ID mIdentifier;
NotificationService* mNotificationService;
// This lock protects |browser_threads_|. Do not read or modify that array
// without holding this lock. Do not block while holding this lock.
// FIXME/cjones: XPCOM doesn't like static vars, so can't use
// mozilla::Mutex
static Lock sLock;
// An array of the ChromeThread objects. This array is protected by |lock_|.
// The threads are not owned by this array. Typically, the threads are owned
// on the UI thread by the g_browser_process object. ChromeThreads remove
// themselves from this array upon destruction.
static BrowserProcessSubThread* sBrowserThreads[ID_COUNT];
};
} /* namespace ipc */
} /* namespace mozilla */
#endif /* __IPC_GLUE_GECKOTHREAD_H__ */