Make socket send and receive more robust and return 0 on failure.

src/platform.h

-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
@@ skipping 634 matching lines @@
 
   // Client initialization.
   virtual bool Connect(const char* host, const char* port) = 0;
 
   // Shutdown socket for both read and write. This causes blocking Send and
   // Receive calls to exit. After Shutdown the Socket object cannot be used for
   // any communication.
   virtual bool Shutdown() = 0;
 
   // Data Transimission
+  // Return 0 on failure.
   virtual int Send(const char* data, int len) const = 0;
   virtual int Receive(char* data, int len) const = 0;
 
   // Set the value of the SO_REUSEADDR socket option.
   virtual bool SetReuseAddress(bool reuse_address) = 0;
 
   virtual bool IsValid() const = 0;
 
   static bool SetUp();
   static int LastError();
@@ skipping 90 matching lines @@
   Atomic32 active_;
   PlatformData* data_;  // Platform specific data.
   int samples_taken_;  // Counts stack samples taken.
   DISALLOW_IMPLICIT_CONSTRUCTORS(Sampler);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_PLATFORM_H_