michael@0: /* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_ipc_UnixFdWatcher_h
michael@0: #define mozilla_ipc_UnixFdWatcher_h
michael@0: 
michael@0: #include "base/message_loop.h"
michael@0: #include "mozilla/FileUtils.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace ipc {
michael@0: 
michael@0: class UnixFdWatcher : public MessageLoopForIO::Watcher
michael@0: {
michael@0: public:
michael@0:   enum {
michael@0:     READ_WATCHER = 1<<0,
michael@0:     WRITE_WATCHER = 1<<1
michael@0:   };
michael@0: 
michael@0:   virtual ~UnixFdWatcher();
michael@0: 
michael@0:   MessageLoop* GetIOLoop() const
michael@0:   {
michael@0:     return mIOLoop;
michael@0:   }
michael@0: 
michael@0:   int GetFd() const
michael@0:   {
michael@0:     return mFd;
michael@0:   }
michael@0: 
michael@0:   bool IsOpen() const
michael@0:   {
michael@0:     return GetFd() >= 0;
michael@0:   }
michael@0: 
michael@0:   virtual void Close();
michael@0: 
michael@0:   void AddWatchers(unsigned long aWatchers, bool aPersistent);
michael@0:   void RemoveWatchers(unsigned long aWatchers);
michael@0: 
michael@0:   // Callback method that's run before closing the file descriptor
michael@0:   virtual void OnClose() {};
michael@0: 
michael@0:   // Callback method that's run on POSIX errors
michael@0:   virtual void OnError(const char* aFunction, int aErrno);
michael@0: 
michael@0: protected:
michael@0:   UnixFdWatcher(MessageLoop* aIOLoop);
michael@0:   UnixFdWatcher(MessageLoop* aIOLoop, int aFd);
michael@0:   void SetFd(int aFd);
michael@0: 
michael@0: private:
michael@0:   static bool FdIsNonBlocking(int aFd);
michael@0: 
michael@0:   MessageLoop* mIOLoop;
michael@0:   ScopedClose mFd;
michael@0:   MessageLoopForIO::FileDescriptorWatcher mReadWatcher;
michael@0:   MessageLoopForIO::FileDescriptorWatcher mWriteWatcher;
michael@0: };
michael@0: 
michael@0: }
michael@0: }
michael@0: 
michael@0: #endif