src/ipc/Messages.h

   1 /*
   2  * $Id$
   3  *
   4  * DEBUG: section 54    Interprocess Communication
   5  *
   6  */
   7
   8 #ifndef SQUID_IPC_MESSAGES_H
   9 #define SQUID_IPC_MESSAGES_H
  10
  11 #include <sys/types.h>
  12
  13 /** Declarations used by varios IPC messages */
  14
  15 namespace Ipc
  16 {
  17
  18 class TypedMsgHdr;
  19
  20 /// message class identifier
  21 typedef enum { mtNone = 0, mtRegistration,
  22     mtSharedListenRequest, mtSharedListenResponse } MessageType;
  23
  24 /// Strand location details
  25 class StrandCoord {
  26 public:
  27     StrandCoord(); ///< unknown location
  28     StrandCoord(int akidId, pid_t aPid); ///< from registrant
  29     explicit StrandCoord(const TypedMsgHdr &hdrMsg); ///< from recvmsg()
  30     void pack(TypedMsgHdr &hdrMsg) const; ///< prepare for sendmsg()
  31
  32 public:
  33     int kidId; ///< internal Squid process number
  34     pid_t pid; ///< OS process or thread identifier
  35 };
  36
  37 } // namespace Ipc;
  38
  39
  40 #endif /* SQUID_IPC_MESSAGES_H */