prof(5) 						Standards, Environments, and Macros						   prof(5)

NAME

       prof - profile within a function

SYNOPSIS

       #define MARK
       #include <prof.h>

       void MARK(name);

DESCRIPTION

       MARK  introduces  a mark called	name that is treated the same as a function entry point.  Execution of the mark adds to a counter for that
       mark, and program-counter time spent is accounted to the immediately preceding mark or to the function if  there  are  no  preceding  marks
       within the active function.

       name may be any combination of letters, numbers, or  underscores. Each  name in a single compilation must be unique, but may be the same as
       any ordinary program symbol.

       For marks to be effective, the symbol MARK must be defined before the header  prof.h is included, either by a  preprocessor directive as in
       the synopsis, or by a command line argument:

       cc -p -DMARK work.c

       If  MARK  is not defined, the  MARK(name) statements may be left in the source files  containing them and are ignored. prof -g must be used
       to get information on all labels.

EXAMPLES

       In this example, marks can be used to determine how much time is spent in each loop. Unless this example is compiled with  MARK defined	on
       the command line, the marks are ignored.

	 #include <prof.h>
	 work( )
	 {
		 int i, j;
		 . . .
		 MARK(loop1);
		 for (i = 0; i < 2000; i++) {
			 . . .
		 }
		 MARK(loop2);
		 for (j = 0; j < 2000; j++) {
			 . . .
		 }
	 }

SEE ALSO

       profil(2), monitor(3C)

SunOS 5.11							    3 Jul 1990								   prof(5)