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Annotation of Net2/tests/benchmarks/pipediscard.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * IPC benchmarkl,
                      3:  * write and discard using pipes.
                      4:  */
                      5: 
                      6: main(argc, argv)
                      7:        char *argv[];
                      8: {
                      9:        char buf[512];
                     10:        int fd[2], msgsize;
                     11:        register int i, iter;
                     12: 
                     13:        if (argc < 3) {
                     14:                printf("usage: %s iterations message-size\n", argv[0]);
                     15:                exit(1);
                     16:        }
                     17:        argc--, argv++;
                     18:        iter = atoi(*argv);
                     19:        argc--, argv++;
                     20:        msgsize = atoi(*argv);
                     21:        if (msgsize > sizeof (buf) || msgsize <= 0) {
                     22:                printf("%s: Bad message size.\n", *argv);
                     23:                exit(2);
                     24:        }
                     25:        if (pipe(fd) < 0) {
                     26:                perror("pipe");
                     27:                exit(3);
                     28:        }
                     29:        if (fork() == 0)
                     30:                for (i = 0; i < iter; i++)
                     31:                        read(fd[0], buf, msgsize);
                     32:        else
                     33:                for (i = 0; i < iter; i++)
                     34:                        write(fd[1], buf, msgsize);
                     35: }

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