[NaCl SDK] Support non blocking TCP/UDP

native_client_sdk/src/libraries/nacl_io/mount_node_udp.h

 // Copyright (c) 2013 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 LIBRARIES_NACL_IO_MOUNT_NODE_UDP_H_
 #define LIBRARIES_NACL_IO_MOUNT_NODE_UDP_H_
 
 #include "nacl_io/ossocket.h"
 #ifdef PROVIDES_SOCKET_API
 
 #include <ppapi/c/pp_resource.h>
 #include <ppapi/c/ppb_udp_socket.h>
 
+#include "nacl_io/event_emitter_udp.h"
 #include "nacl_io/mount_node.h"
 #include "nacl_io/mount_node_socket.h"
 
 namespace nacl_io {
 
 class MountNodeUDP : public MountNodeSocket {
  public:
   explicit MountNodeUDP(Mount* mount);
 
+ protected:
   virtual Error Init(int flags);
+  virtual void Destroy();
+
+ public:
+  virtual EventEmitterUDP* GetEventEmitter();
+
+  virtual void QueueInput();
+  virtual void QueueOutput();
 
   virtual Error Bind(const struct sockaddr* addr, socklen_t len);
   virtual Error Connect(const struct sockaddr* addr, socklen_t len);
 
-  virtual Error Recv(void* buf, size_t len, int flags, int* out_len);
-  virtual Error RecvFrom(void* buf,
-                         size_t len,
-                         int flags,
-                         struct sockaddr* src_addr,
-                         socklen_t* addrlen,
-                         int* out_len);
+ protected:
+  virtual Error Recv_Locked(void* buf,
+                            size_t len,
+                            PP_Resource* addr,
+                            int* out_len);
 
-  virtual Error Send(const void* buf, size_t len, int flags, int* out_len);
-  virtual Error SendTo(const void* buf,
-                       size_t len,
-                       int flags,
-                       const struct sockaddr* dest_addr,
-                       socklen_t addrlen,
-                       int* out_len);
+  virtual Error Send_Locked(const void* buf,
+                            size_t len,
+                            PP_Resource addr,
+                            int* out_len);
 
- protected:
-  UDPSocketInterface* UDPSocket();
-
-  Error RecvFromHelper(void* buf,
-                       size_t len,
-                       int flags,
-                       PP_Resource* addr,
-                       int* out_len);
-
-  Error SendToHelper(const void* buf,
-                     size_t len,
-                     int flags,
-                     PP_Resource dest_addr,
-                     int* out_len);
+  ScopedEventEmitterUDP emitter_;
 };
 
 
 }  // namespace nacl_io
 
 #endif  // PROVIDES_SOCKET_API
 #endif  // LIBRARIES_NACL_IO_MOUNT_NODE_UDP_H_