src/ipc/Response.h

   1 /*
   2  * Copyright (C) 1996-2015 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 /* DEBUG: section 54    Interprocess Communication */
  10
  11 #ifndef SQUID_IPC_RESPONSE_H
  12 #define SQUID_IPC_RESPONSE_H
  13
  14 #include "base/RefCount.h"
  15 #include "ipc/forward.h"
  16
  17 namespace Ipc
  18 {
  19
  20 /// A response to Ipc::Request.
  21 class Response: public RefCountable
  22 {
  23 public:
  24     typedef RefCount<Response> Pointer;
  25
  26 public:
  27     explicit Response(unsigned int aRequestId):
  28         requestId(aRequestId) {}
  29
  30     virtual void pack(TypedMsgHdr& msg) const = 0; ///< prepare for sendmsg()
  31     virtual Pointer clone() const = 0; ///< returns a copy of this
  32
  33 private:
  34     Response(const Response&); // not implemented
  35     Response& operator= (const Response&); // not implemented
  36
  37 public:
  38     unsigned int requestId; ///< ID of request we are responding to
  39 };
  40
  41 inline
  42 std::ostream& operator << (std::ostream &os, const Response& response)
  43 {
  44     os << "[response.requestId %u]" << response.requestId << '}';
  45     return os;
  46 }
  47
  48 } // namespace Ipc
  49
  50 #endif /* SQUID_IPC_RESPONSE_H */
  51