tt_message_context_xval(3) ToolTalk Functions tt_message_context_xval(3)NAMEtt_message_context_xval - retrieve and deserialize the data from a mes‐
sage's context
SYNOPSIS
#include <Tt/tt_c.h>
Tt_status tt_message_context_xval(Tt_message m,
const char *slotname,
xdrproc_t xdr_proc,
void **value);
DESCRIPTION
The tt_message_context_xval() function retrieves and deserializes the
data from a message's context.
The m argument is the opaque handle for the message involved in this
operation. The slotname argument describes the context of this mes‐
sage. The xdr_proc argument points to the XDR procedure to be used to
deserialize the data in the nth argument into newly allocated storage,
the address of which will be stored in the pointer whose address is
value.
The value argument is the data to be deserialized.
RETURN VALUE
Upon successful completion, the tt_message_context_xval() 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.
TT_ERR_NUM
The integer value passed was invalid (out of range).
TT_ERR_XDR
The XDR procedure failed on the given data, or evaluated to
a zero-length expression.
APPLICATION USAGE
The allocation calls are made by the XDR procedure; therefore, any
storage allocated is not allocated from the ToolTalk allocation stack.
The application should use the xdr_free(3) call to free this storage.
SEE ALSOtt_c(5).
ToolTalk 1.3 1 March 1996 tt_message_context_xval(3)
