tt_pattern_iarg_add(3) ToolTalk Functions tt_pattern_iarg_add(3)NAMEtt_pattern_iarg_add - add a new integer argument to a pattern
SYNOPSIS
#include <Tt/tt_c.h>
Tt_status tt_pattern_iarg_add(Tt_pattern m,
Tt_mode n,
const char *vtype,
int value);
DESCRIPTION
The tt_pattern_iarg_add() function adds a new argument to a pattern and
sets the value to a given integer.
Add all arguments before the pattern is registered with the ToolTalk
service.
The m argument is the opaque handle for the pattern involved in this
operation. The n argument specifies who (sender, handler, observers)
writes and reads a message argument. The following modes are defined:
TT_IN The argument is written by the sender and read by the han‐
dler and any observers.
TT_OUT
The argument is written by the handler and read by the
sender and any reply observers.
TT_INOUT
The argument is written by the sender and the handler and
read by all.
The vtype argument describes the type of argument data being added.
NULL matches any value. The value argument is the value to be added.
Pattern arguments are positional paramaters, and thus will only match
an incoming message if the arguments have the same type and position
within the argument list of the incoming message. In order to match an
argument which is not the first in a list of arguments, the programmer
must use tt_pattern_arg_add(3) to register wildcard arguments for the
intervening arguments between the first argument and the argument which
it is desired to match on. Wildcard arguments should have the vtype of
"ALL" and a value of NULL. Note that the tt_pattern_iarg_add () should
not be used to add wildcard arguments because NULL, or 0, is a valid
number.
RETURN VALUE
Upon successful completion, the tt_pattern_iarg_add() function returns
the status of the operation as one of the following Tt_status values:
TT_OK The operation completed successfully.
TT_ERR_MODE
The specified Tt_mode is invalid.
TT_ERR_NOMP
The ttsession(1) process is not running and the ToolTalk
service cannot restart it.
TT_ERR_POINTER
The pointer passed does not point to an object of the cor‐
rect type for this operation.
SEE ALSOtt_c(5), tt_pattern_register(3).
ToolTalk 1.3 1 March 1996 tt_pattern_iarg_add(3)
