TipcSrvQueueCbLookup

Name

TipcSrvQueueCbLookup — look up a queue callback in the connection to RTserver

Synopsis

T_CB TipcSrvQueueCbLookup(mt, func, arg) 
T_IPC_MT mt; 
T_IPC_CONN_QUEUE_CB_FUNC func; 
T_CB_ARG arg; 

Arguments

mt — message type to look up callback for (null means global callback)

func — callback function

arg — user-defined argument

Return Values

Callback if successful, NULL otherwise.

Diagnostics

If TipcSrvQueueCbLookup fails, it returns NULL and sets the global SmartSockets error number to one of:

Description

TipcSrvQueueCbLookup looks up a queue callback with the desired message type, function, and argument in the connection to RTserver by calling TipcConnQueueCbLookup. These callbacks are called when a message is inserted into or deleted from the message queue of the connection to RTserver. See TipcConnQueueCbCreate for more information on connection queue callbacks.

TipcSrvQueueCbLookup may attempt to automatically create a connection to RTserver. If RTclient has a warm connection to RTserver, TipcSrvQueueCbLookup looks up a queue callback in the warm connection. See TipcSrvCreate on automatic creation of connections and warm connections to RTserver.

Caution

None

See Also

TipcConnQueueCbCreate, TipcSrvQueueCbCreate, TipcConnQueueCbLookup; see the TIBCO SmartSockets Utilities for information on TutCbDestroy.

Examples

This example looks up and destroys a NUMERIC_DATA queue callback in the connection to RTserver:

T_CB cb; 
T_IPC_MT mt; 
 
mt = TipcMtLookupByNum(T_MT_NUMERIC_DATA); 
if (mt == NULL) { 
  return;  /* error */ 
}  
 
cb = TipcSrvQueueCbLookup(mt, my_numeric_queue_cb, NULL); 
if (cb == NULL) { 
  return;  /* error */ 
}  
 
if (!TutCbDestroy(cb)) { 
  return;  /* error */ 
}