TAU_CONTEXT_EVENT(3)					      TAU Instrumentation API					      TAU_CONTEXT_EVENT(3)

NAME

       TAU_CONTEXT_EVENT - Triggers a context event

SYNOPSIS

       C/C++:

       TAU_CONTEXT_EVENT(TauUserEvent variable, double value);

       Fortran:

       TAU_CONTEXT_EVENT(integer variable(2), real value);

DESCRIPTION

       Triggers a context event. A context event associates the name with the list of routines along the callstack. A context event tracks
       information like a user defined event and TAU records the maxima, minima, mean, std. deviation and the number of samples for each context
       event. A context event helps distinguish the data supplied by the user based on the location where an event occurs and the sequence of
       actions (routine/timer invocations) that preceeded the event. The depth of the the callstack embedded in the context event's name is
       specified by the user in the environment variable TAU_CALLPATH_DEPTH. If this variable is not specified, TAU uses a default depth of 2.

EXAMPLE

       C/C++ :

       int f2(void)
       {
	 static int count = 0;
	 count ++;
	 TAU_PROFILE("f2()", "(sleeps 2 sec, calls f3)", TAU_USER);
	 TAU_REGISTER_CONTEXT_EVENT(event, "Iteration count");
       /*
	 if (count == 2)
	   TAU_DISABLE_CONTEXT_EVENT(event);
       */
	 printf("Inside f2: sleeps 2 sec, calls f3
");

	 TAU_CONTEXT_EVENT(event, 232+count);
	 sleep(2);
	 f3();
	 return 0;
       }

       Fortran :

       integer memevent(2) / 0, 0 /
       save memevent
       call TAU_REGISTER_CONTEXT_EVENT(memevent, "STORAGEARY mem allocated')
       call TAU_CONTEXT_EVENT(memevent, SIZEOF(STORAGEARY)*sizeof(INTEGER))

SEE ALSO

       TAU_REGISTER_CONTEXT_EVENT(3)

								    08/31/2005						      TAU_CONTEXT_EVENT(3)