test/sysperf/call2.c

   1 /*
   2  * call2.c
   3  *
   4  * Test a standard function call to a function which does nothing much.
   5  *
   6  * $DragonFly: src/test/sysperf/call2.c,v 1.2 2005/08/02 17:11:04 hmp Exp $
   7  */
   8
   9 #include "blib.h"
  10
  11 #define LOOP 1000000000
  12
  13 static void xnop(void) { }
  14
  15 static void (*xnop_ptr)(void) = xnop;
  16
  17 int
  18 main(int ac, char **av)
  19 {
  20     int i;
  21
  22     printf("call nop() function through function pointer in loop\n");
  23     start_timing();
  24     for (i = 0; i < LOOP; ++i)
  25         xnop_ptr();
  26     stop_timing(LOOP, "loop1/user");
  27     return(0);
  28 }
  29