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Full Discussion: error: initializer expression list treated as compound expression
Top Forums Programming error: initializer expression list treated as compound expression Post 302145388 by arunchaudhary19 on Wednesday 14th of November 2007 04:47:39 AM
Old 11-14-2007
ok...........here is the section of my code..........

from main I am Calling function.......
setup_ipc("msqueue",1234,INPUT_IPC,LARGE_QUEUE);
and its defination is in another *.cpp file

and here is its defination
int setup_ipc (const char * ipc_name, long base_add, int io_type, int ipc_qtype)
{
char sbuffer[FILENAMELEN + 1];
key_t msg_key;
int msg_flag;
if ((io_type != INPUT_IPC && io_type != OUTPUT_IPC) ||
(ipc_qtype != SMALL_QUEUE && ipc_qtype != LARGE_QUEUE &&
ipc_qtype != PRI_QUEUE && ipc_qtype != MAIL_BOX &&
ipc_qtype != SOCKET_QUEUE)) {return(-1);}

if (!(*ipc_name)) {return(-1);}

/** look for the end of ipc_tbl **/
lipc_tbl = &ipc_lhead;
for (ipc_tbl = ipc_lhead.ipc_nextent; ipc_tbl;lipc_tbl = ipc_tbl, ipc_tbl = ipc_tbl->ipc_nextent);

ipc_tbl = (struct ipc_ent *) malloc(sizeof(struct ipc_ent));
if ( !ipc_tbl ) {return(-1);}

/** init table entry variables **/
strncpy(sbuffer, ipc_name, FILENAMELEN);
sbuffer[FILENAMELEN - 1] = '\0';
sprintf(ipc_tbl->fname, "%s", sbuffer);
ipc_tbl->ipc_tag = ++ipc_ecnt;
ipc_tbl->io_type = io_type;
ipc_tbl->vlmsg_id = -1;
ipc_tbl->sockfd = -1;
ipc_tbl->vlkey_id = base_add;
ipc_tbl->qtype = ipc_qtype;
ipc_tbl->ipc_nextent = NULL;

/** open message queue **/
if (ipc_qtype != SOCKET_QUEUE)
{
msg_key = ipc_tbl->vlkey_id;
if (io_type == INPUT_IPC)
msg_flag = IPC_CREAT | IPC_EXCL | 0666;
else
msg_flag = 0666;

errno = 0;
while ((ipc_tbl->vlmsg_id = msgget(msg_key, msg_flag)) < 0 && errno == EEXIST)
{
errno = 0;
msg_key++;
}

if (errno != 0)
{ // error other than EEXIST occurs
free(ipc_tbl);
return(-1);
}

ipc_tbl->vlkey_id = msg_key;
}
 

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LEARN ABOUT SUNOS

msgget

msgget(2)							   System Calls 							 msgget(2)

NAME

       msgget - get message queue

SYNOPSIS

       #include <sys/msg.h>

       int msgget(key_t key, int msgflg);

DESCRIPTION

       The msgget() argument returns the message queue identifier associated with key.

       A  message  queue identifier and associated message queue and data structure (see intro(2)) are created for key if one of the following are
       true:

	 o  key is IPC_PRIVATE.

	 o  key does not already have a message queue identifier associated with it, and (msgflg&IPC_CREAT) is true.

       On creation, the data structure associated with the new message queue identifier is initialized as follows:

	 o  msg_perm.cuid, msg_perm.uid, msg_perm.cgid, and msg_perm.gid are set to the effective user ID and effective group ID, respectively, of
	    the calling process.

	 o  The low-order 9 bits of msg_perm.mode are set to the low-order 9 bits of msgflg.

	 o  msg_qnum, msg_lspid, msg_lrpid, msg_stime, and msg_rtime are set to 0.

	 o  msg_ctime is set to the current time.

	 o  msg_qbytes is set to the system limit. See NOTES.

RETURN VALUES

       Upon successful completion, a non-negative integer representing a message queue identifier is returned. Otherwise, -1 is returned and errno
       is set to indicate the error.

ERRORS

       The msgget() function will fail if:

       EACCES	       A message queue identifier exists for key, but operation permission (see intro(2)) as specified by the low-order 9 bits	of
		       msgflg would not be granted.

       EEXIST	       A message queue identifier exists for key but (msgflg&IPC_CREAT) and (msgflg&IPC_EXCL) are both true.

       ENOENT	       A message queue identifier does not exist for key and (msgflg&IPC_CREAT) is false.

       ENOSPC	       A  message  queue  identifier  is to be created but the system-imposed limit on the maximum number of allowed message queue
		       identifiers system wide would be exceeded. See NOTES.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       rctladm(1M), intro(2), msgctl(2), msgrcv(2), msgsnd(2), setrctl(2), ftok(3C), attributes(5), standards(5)

NOTES

       The system-defined limit used to initialize msg_qbytes is the minimum  enforced	value  of  the	calling  process's  process.max-msg-qbytes
       resource control.

       The  system-imposed  limit  on  the  number of message queue identifiers is maintained on a per-project basis using the project.max-msg-ids
       resource control.

	See rctladm(1M) and setrctl(2) for information about using resource controls.

SunOS 5.10							    11 Feb 2003 							 msgget(2)
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