BSD 4_3_Net_2 development

[unix-history] / usr / src / sys / tests / benchmarks / bench-4.1 / signocsw.c

/*
* Signal without context switch benchmark.
*/
#include <signal.h>

int     pid;
int     nsigs;
int     sigsub();

main(argc, argv)
       char *argv[];
{

       if (argc < 2) {
               printf("usage: %s nsignals\n", argv[0]);
               exit(1);
       }
       nsigs = atoi(argv[1]);
       signal(SIGALRM, sigsub);
       pid = getpid();
       kill(pid, SIGALRM);
}

sigsub()
{
       static int i = 0;

       signal(SIGALRM, sigsub);
       if (i++ < nsigs)
               kill(pid, SIGALRM);
}