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ToolTalk User's Guide

Scoping to a File and/or a Session

A TT_BOTH-scoped pattern will match messages that are scoped to the file, the session, or the file and the session. However, when you use this scope, you must explicitly make a tt_file_join call; otherwise, the ToolTalk service will only match messages that are scoped to both the file and session of the registered pattern. Example 3–8 and Example 3–9 show examples of how to use this scope.

Example 3–8 A Dynamic Pattern that Uses the TT_BOTH Scope

Obtain procid 

tt_open(); 

Create pattern 

Tt_pattern pat = tt_create_pattern(); 

Add scope to pattern 

tt_pattern_scope_add(pat, TT_BOTH); 

Add session to pattern 

tt_pattern_session_add(pat,tt_default_session()); 

Add file to pattern 

tt_pattern_file_add (pat, file); 

Register pattern 

tt_pattern_register(pat); 

Example 3–9 A Static Pattern that Uses the TT_BOTH Scope

Obtain procid 

tt_open(); 

Declare Ptype 

Tt_ptype_declare(ptype); 

Join file 

tt_file_join(file); 

Join session 

tt_session_join(tt_default_session());