ACE/examples/System_V_IPC/SV_Message_Queues/test.h

   1 /* -*- C++ -*- */
   2 #include "ace/OS_NS_string.h"
   3
   4 #if !defined (ACE_LACKS_PRAGMA_ONCE)
   5 # pragma once
   6 #endif /* ACE_LACKS_PRAGMA_ONCE */
   7
   8 #include "ace/SV_Message.h"
   9
  10 #define MSGSZ 128
  11 #define SRV_KEY ACE_DEFAULT_SHM_KEY
  12 #define SRV_ID 1
  13
  14 class Message_Data
  15 {
  16 public:
  17   Message_Data (long p = -1,
  18                 const char user[] = "",
  19                 const char text[] = ""): pid_ (p)
  20   {
  21     ACE_OS::strncpy (this->username_, user, 9);
  22     ACE_OS::strncpy (this->mtext_, text, MSGSZ);
  23   }
  24
  25   long pid () { return this->pid_; }
  26   void pid (long p) { this->pid_ = p; }
  27   char *user () { return this->username_; }
  28   void user (char user[]) { ACE_OS::strncpy (this->username_, user, 9); }
  29   char *text () { return this->mtext_; }
  30   void text (char text[]) { ACE_OS::strncpy (this->mtext_, text, MSGSZ); }
  31   int length () { return sizeof *this - sizeof this->mtext_ + ACE_OS::strlen (this->mtext_) + 1; }
  32
  33 protected:
  34   long  pid_;
  35   char  username_[9];
  36   char  mtext_[MSGSZ];
  37 };
  38
  39 class Message_Block : public ACE_SV_Message, public Message_Data
  40 {
  41   // = TITLE
  42   //   Stores message content.
  43   // = DESCRIPTION
  44   //   This may not be 100 percent portable on all C++ compilers since
  45   //   it relies on inheritance to be "concatenation."
  46   //
  47 public:
  48   Message_Block (long t,
  49                  long p = 0,
  50                  const char login[] = "",
  51                  const char message[] = "")
  52   : ACE_SV_Message (t),
  53     Message_Data (p, login, message)
  54   {}
  55 };
  56