base::Bind: Convert Socket::Read.

net/udp/udp_socket_libevent.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_UDP_UDP_SOCKET_LIBEVENT_H_
 #define NET_UDP_UDP_SOCKET_LIBEVENT_H_
 #pragma once
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 37 matching lines @@
   int GetLocalAddress(IPEndPoint* address) const;
 
   // IO:
   // Multiple outstanding read requests are not supported.
   // Full duplex mode (reading and writing at the same time) is supported
 
   // Read from the socket.
   // Only usable from the client-side of a UDP socket, after the socket
   // has been connected.
   int Read(IOBuffer* buf, int buf_len, OldCompletionCallback* callback);
+  int Read(IOBuffer* buf, int buf_len, const CompletionCallback& callback);
 
   // Write to the socket.
   // Only usable from the client-side of a UDP socket, after the socket
   // has been connected.
   int Write(IOBuffer* buf, int buf_len, OldCompletionCallback* callback);
 
   // Read from a socket and receive sender address information.
   // |buf| is the buffer to read data into.
   // |buf_len| is the maximum amount of data to read.
   // |address| is a buffer provided by the caller for receiving the sender
   //   address information about the received data.  This buffer must be kept
   //   alive by the caller until the callback is placed.
   // |address_length| is a ptr to the length of the |address| buffer.  This
   //   is an input parameter containing the maximum size |address| can hold
   //   and also an output parameter for the size of |address| upon completion.
   // |callback| the callback on completion of the Recv.
   // Returns a net error code, or ERR_IO_PENDING if the IO is in progress.
   // If ERR_IO_PENDING is returned, the caller must keep |buf|, |address|,
   // and |address_length| alive until the callback is called.
   int RecvFrom(IOBuffer* buf,
                int buf_len,
                IPEndPoint* address,
                OldCompletionCallback* callback);
+  int RecvFrom(IOBuffer* buf,
+               int buf_len,
+               IPEndPoint* address,
+               const CompletionCallback& callback);
 
   // Send to a socket with a particular destination.
   // |buf| is the buffer to send
   // |buf_len| is the number of bytes to send
   // |address| is the recipient address.
   // |address_length| is the size of the recipient address
   // |callback| is the user callback function to call on complete.
   // Returns a net error code, or ERR_IO_PENDING if the IO is in progress.
   // If ERR_IO_PENDING is returned, the caller must keep |buf| and |address|
   // alive until the callback is called.
@@ skipping 16 matching lines @@
  private:
   static const int kInvalidSocket = -1;
 
   class ReadWatcher : public MessageLoopForIO::Watcher {
    public:
     explicit ReadWatcher(UDPSocketLibevent* socket) : socket_(socket) {}
 
     // MessageLoopForIO::Watcher methods
 
     virtual void OnFileCanReadWithoutBlocking(int /* fd */) OVERRIDE {
-      if (socket_->read_callback_)
+      if (socket_->old_read_callback_ || !socket_->read_callback_.is_null())
         socket_->DidCompleteRead();
     }
 
     virtual void OnFileCanWriteWithoutBlocking(int /* fd */) OVERRIDE {}
 
    private:
     UDPSocketLibevent* const socket_;
 
     DISALLOW_COPY_AND_ASSIGN(ReadWatcher);
   };
@@ skipping 74 matching lines @@
   scoped_refptr<IOBuffer> read_buf_;
   int read_buf_len_;
   IPEndPoint* recv_from_address_;
 
   // The buffer used by InternalWrite() to retry Write requests
   scoped_refptr<IOBuffer> write_buf_;
   int write_buf_len_;
   scoped_ptr<IPEndPoint> send_to_address_;
 
   // External callback; called when read is complete.
-  OldCompletionCallback* read_callback_;
+  OldCompletionCallback* old_read_callback_;
+  CompletionCallback read_callback_;
 
   // External callback; called when write is complete.
   OldCompletionCallback* write_callback_;
 
   BoundNetLog net_log_;
 
   DISALLOW_COPY_AND_ASSIGN(UDPSocketLibevent);
 };
 
 }  // namespace net
 
 #endif  // NET_UDP_UDP_SOCKET_LIBEVENT_H_