Esempio n. 1
0
static int multiwrite_f(int argc, char **argv)
{
    struct timeval t1, t2;
    int Cflag = 0, qflag = 0;
    int c, cnt;
    char **buf;
    int64_t offset, first_offset = 0;
    /* Some compilers get confused and warn if this is not initialized.  */
    int total = 0;
    int nr_iov;
    int nr_reqs;
    int pattern = 0xcd;
    QEMUIOVector *qiovs;
    int i;
    BlockRequest *reqs;

    while ((c = getopt(argc, argv, "CqP:")) != EOF) {
        switch (c) {
        case 'C':
            Cflag = 1;
            break;
        case 'q':
            qflag = 1;
            break;
        case 'P':
            pattern = parse_pattern(optarg);
            if (pattern < 0) {
                return 0;
            }
            break;
        default:
            return command_usage(&writev_cmd);
        }
    }

    if (optind > argc - 2) {
        return command_usage(&writev_cmd);
    }

    nr_reqs = 1;
    for (i = optind; i < argc; i++) {
        if (!strcmp(argv[i], ";")) {
            nr_reqs++;
        }
    }

    reqs = g_malloc0(nr_reqs * sizeof(*reqs));
    buf = g_malloc0(nr_reqs * sizeof(*buf));
    qiovs = g_malloc(nr_reqs * sizeof(*qiovs));

    for (i = 0; i < nr_reqs && optind < argc; i++) {
        int j;

        /* Read the offset of the request */
        offset = cvtnum(argv[optind]);
        if (offset < 0) {
            printf("non-numeric offset argument -- %s\n", argv[optind]);
            goto out;
        }
        optind++;

        if (offset & 0x1ff) {
            printf("offset %lld is not sector aligned\n",
                   (long long)offset);
            goto out;
        }

        if (i == 0) {
            first_offset = offset;
        }

        /* Read lengths for qiov entries */
        for (j = optind; j < argc; j++) {
            if (!strcmp(argv[j], ";")) {
                break;
            }
        }

        nr_iov = j - optind;

        /* Build request */
        buf[i] = create_iovec(&qiovs[i], &argv[optind], nr_iov, pattern);
        if (buf[i] == NULL) {
            goto out;
        }

        reqs[i].qiov = &qiovs[i];
        reqs[i].sector = offset >> 9;
        reqs[i].nb_sectors = reqs[i].qiov->size >> 9;

        optind = j + 1;

        pattern++;
    }

    /* If there were empty requests at the end, ignore them */
    nr_reqs = i;

    gettimeofday(&t1, NULL);
    cnt = do_aio_multiwrite(reqs, nr_reqs, &total);
    gettimeofday(&t2, NULL);

    if (cnt < 0) {
        printf("aio_multiwrite failed: %s\n", strerror(-cnt));
        goto out;
    }

    if (qflag) {
        goto out;
    }

    /* Finally, report back -- -C gives a parsable format */
    t2 = tsub(t2, t1);
    print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
out:
    for (i = 0; i < nr_reqs; i++) {
        qemu_io_free(buf[i]);
        if (reqs[i].qiov != NULL) {
            qemu_iovec_destroy(&qiovs[i]);
        }
    }
    g_free(buf);
    g_free(reqs);
    g_free(qiovs);
    return 0;
}
Esempio n. 2
0
static int
multiwrite_f(int argc, char **argv)
{
	struct timeval t1, t2;
	int Cflag = 0, qflag = 0;
	int c, cnt;
	char **buf;
	int64_t offset, first_offset = 0;
	
	int total = 0;
	int nr_iov;
	int nr_reqs;
	int pattern = 0xcd;
	QEMUIOVector *qiovs;
	int i;
	BlockRequest *reqs;

	while ((c = getopt(argc, argv, "CqP:")) != EOF) {
		switch (c) {
		case 'C':
			Cflag = 1;
			break;
		case 'q':
			qflag = 1;
			break;
		case 'P':
			pattern = parse_pattern(optarg);
			if (pattern < 0)
				return 0;
			break;
		default:
			return command_usage(&writev_cmd);
		}
	}

	if (optind > argc - 2)
		return command_usage(&writev_cmd);

	nr_reqs = 1;
	for (i = optind; i < argc; i++) {
		if (!strcmp(argv[i], ";")) {
			nr_reqs++;
		}
	}

	reqs = qemu_malloc(nr_reqs * sizeof(*reqs));
	buf = qemu_malloc(nr_reqs * sizeof(*buf));
	qiovs = qemu_malloc(nr_reqs * sizeof(*qiovs));

	for (i = 0; i < nr_reqs; i++) {
		int j;

		
		offset = cvtnum(argv[optind]);
		if (offset < 0) {
			printf("non-numeric offset argument -- %s\n", argv[optind]);
			return 0;
		}
		optind++;

		if (offset & 0x1ff) {
			printf("offset %lld is not sector aligned\n",
				(long long)offset);
			return 0;
		}

        if (i == 0) {
            first_offset = offset;
        }

		
		for (j = optind; j < argc; j++) {
			if (!strcmp(argv[j], ";")) {
				break;
			}
		}

		nr_iov = j - optind;

		
		reqs[i].qiov = &qiovs[i];
		buf[i] = create_iovec(reqs[i].qiov, &argv[optind], nr_iov, pattern);
		reqs[i].sector = offset >> 9;
		reqs[i].nb_sectors = reqs[i].qiov->size >> 9;

		optind = j + 1;

		offset += reqs[i].qiov->size;
		pattern++;
	}

	gettimeofday(&t1, NULL);
	cnt = do_aio_multiwrite(reqs, nr_reqs, &total);
	gettimeofday(&t2, NULL);

	if (cnt < 0) {
		printf("aio_multiwrite failed: %s\n", strerror(-cnt));
		goto out;
	}

	if (qflag)
		goto out;

	
	t2 = tsub(t2, t1);
	print_report("wrote", &t2, first_offset, total, total, cnt, Cflag);
out:
	for (i = 0; i < nr_reqs; i++) {
		qemu_io_free(buf[i]);
		qemu_iovec_destroy(&qiovs[i]);
	}
	qemu_free(buf);
	qemu_free(reqs);
	qemu_free(qiovs);
	return 0;
}