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OpenSolaris 2009.06 - man page for prof (opensolaris section 5)

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  con-
       taining 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)


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