int lsQueueDequeueData_(struct lsQueue *head, char **data)
{
struct lsQueueEntry *ent = lsQueueDequeue_(head);
if (ent == NULL) {
return 0;
}
*data = ent->data;
free(ent);
return 1;
}
int
lsMsgRcv_(int taskid, char *buffer, int len, int options)
{
struct tid *tEnt;
struct lsQueueEntry *qEnt;
int rc;
tEnt = tidFindIgnoreConn_(taskid);
if (tEnt == NULL)
return -1;
Again:
if (tEnt->isEOF) {
lserrno = LSE_RES_INVCHILD;
return -1;
}
if (lsMsgRdy_(taskid, NULL)) {
struct lsTMsgHdr *header;
qEnt = lsQueueDequeue_(tEnt->tMsgQ);
if (qEnt == NULL) {
lserrno = LSE_MSG_SYS;
return -1;
}
header = (struct lsTMsgHdr *)qEnt->data;
if (header->len > len) {
lserrno = LSE_MSG_SYS;
lsQueueEntryDestroy_(qEnt, tEnt->tMsgQ);
return -1;
}
if (header->type == LSTMSG_IOERR) {
lserrno = LSE_LOSTCON;
lsQueueEntryDestroy_(qEnt, tEnt->tMsgQ);
return -1;
} else if (header->type == LSTMSG_EOF) {
tEnt->isEOF = TRUE;
lsQueueEntryDestroy_(qEnt, tEnt->tMsgQ);
return 0;
}
memcpy((char *)buffer, (char *)header->msgPtr, header->len);
rc = header->len;
lsQueueEntryDestroy_(qEnt, tEnt->tMsgQ);
return rc;
} else {
int nrdy = 0;
if (tEnt->sock < 0) {
lserrno = LSE_LOSTCON;
tid_remove(taskid);
return -1;
}
rc = lsMsgWait_(1, &taskid, &nrdy, 0, NULL, NULL, NULL, NULL, 0);
if (rc < 0)
return rc;
if (nrdy > 0)
goto Again;
else
return -1;
}
}
