Headers                                              msg.h(3HEAD)



NAME
     msg.h, msg - message queue structures

SYNOPSIS
     #include 


DESCRIPTION
     The  header  defines  the  following  data  types
     through typedef:

     msgqnumt    used for the number of messages in the  message
                  queue


     msglent     used for the number of  bytes  allowed  in  the
                  message queue



     These types are unsigned integer  types  that  are  able  to
     store values at least as large as a type unsigned short.


     The  header defines the following constant  as  a
     message operation flag:

     MSGNOEROR    no error if big message



     The msqidds structure contains the following members:

       struct ipcperm    msgperm      Operation permission structure.
       msgqnumt          msgqnum      Number of messages currently on
                                        queue.
       msglent           msgqbytes    Maximum number of bytes allowed
                                        on queue.
       pidt              msglspid     Process ID of last msgsnd(2).
       pidt              msglrpid     Process ID of last msgrcv(2).
       timet             msgstime     Time of last msgsnd().
       timet             msgrtime     Time of last msgrcv().
       timet             msgctime     Time of last change.



     The pidt, timet, keyt,  sizet,  and  ssizet  types  are
     defined as described in . See types(3HEAD).

ATRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



SunOS 5.11          Last change: 10 Sep 2004                    1






Headers                                              msg.h(3HEAD)



     
           ATRIBUTE TYPE               ATRIBUTE VALUE       
    
     Interface Stability          Standard                    
    


SEE ALSO
     msgctl(2), msgget(2),  msgrcv(2),  msgsnd(2),  ipc.h(3HEAD),
     types.h(3HEAD), attributes(5), standards(5)













































SunOS 5.11          Last change: 10 Sep 2004                    2