Return to pipediscard.c CVS log

Up to [Net/2] / Net2 / tests / benchmarks

Net/2

/*
 * IPC benchmarkl,
 * write and discard using pipes.
 */

main(argc, argv)
	char *argv[];
{
	char buf[512];
	int fd[2], msgsize;
	register int i, iter;

	if (argc < 3) {
		printf("usage: %s iterations message-size\n", argv[0]);
		exit(1);
	}
	argc--, argv++;
	iter = atoi(*argv);
	argc--, argv++;
	msgsize = atoi(*argv);
	if (msgsize > sizeof (buf) || msgsize <= 0) {
		printf("%s: Bad message size.\n", *argv);
		exit(2);
	}
	if (pipe(fd) < 0) {
		perror("pipe");
		exit(3);
	}
	if (fork() == 0)
		for (i = 0; i < iter; i++)
			read(fd[0], buf, msgsize);
	else
		for (i = 0; i < iter; i++)
			write(fd[1], buf, msgsize);
}

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.