C++ qemu_io_free函数代码示例

static void aio_write_done(void *opaque, int ret)
{
    struct aio_ctx *ctx = opaque;
    struct timeval t2;

    gettimeofday(&t2, NULL);


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

    if (ctx->qflag) {
        goto out;
    }

    /* Finally, report back -- -C gives a parsable format */
    t2 = tsub(t2, ctx->t1);
    print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
                 ctx->qiov.size, 1, ctx->Cflag);
out:
    qemu_io_free(ctx->buf);
    qemu_iovec_destroy(&ctx->qiov);
    g_free(ctx);
}

static void
aio_write_done(void *opaque, int ret)
{
	struct aio_ctx *ctx = opaque;
	struct timeval t2;

	gettimeofday(&t2, NULL);


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

	if (ctx->qflag) {
		goto out;
	}

	
	t2 = tsub(t2, ctx->t1);
	print_report("wrote", &t2, ctx->offset, ctx->qiov.size,
		     ctx->qiov.size, 1, ctx->Cflag);
out:
	qemu_io_free(ctx->buf);
	free(ctx);
}

static void
aio_read_done(void *opaque, int ret)
{
    struct aio_ctx *ctx = opaque;
    struct timeval t2;

    gettimeofday(&t2, NULL);

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

    if (ctx->Pflag) {
        void *cmp_buf = malloc(ctx->qiov.size);

        memset(cmp_buf, ctx->pattern, ctx->qiov.size);
        if (memcmp(ctx->buf, cmp_buf, ctx->qiov.size)) {
            printf("Pattern verification failed at offset %"
                   PRId64 ", %zd bytes\n",
                   ctx->offset, ctx->qiov.size);
        }
        free(cmp_buf);
    }

    if (ctx->qflag) {
        goto out;
    }

    if (ctx->vflag) {
        dump_buffer(ctx->buf, ctx->offset, ctx->qiov.size);
    }

    /* Finally, report back -- -C gives a parsable format */
    t2 = tsub(t2, ctx->t1);
    print_report("read", &t2, ctx->offset, ctx->qiov.size,
                 ctx->qiov.size, 1, ctx->Cflag);
out:
    qemu_io_free(ctx->buf);
    free(ctx);
}

//.........这里部分代码省略.........
            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;
}

static int writev_f(int argc, char **argv)
{
    struct timeval t1, t2;
    int Cflag = 0, qflag = 0;
    int c, cnt;
    char *buf;
    int64_t offset;
    /* Some compilers get confused and warn if this is not initialized.  */
    int total = 0;
    int nr_iov;
    int pattern = 0xcd;
    QEMUIOVector qiov;

    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);
    }

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

    if (offset & 0x1ff) {
        printf("offset %" PRId64 " is not sector aligned\n",
               offset);
        return 0;
    }

    nr_iov = argc - optind;
    buf = create_iovec(&qiov, &argv[optind], nr_iov, pattern);
    if (buf == NULL) {
        return 0;
    }

    gettimeofday(&t1, NULL);
    cnt = do_aio_writev(&qiov, offset, &total);
    gettimeofday(&t2, NULL);

    if (cnt < 0) {
        printf("writev 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, offset, qiov.size, total, cnt, Cflag);
out:
    qemu_iovec_destroy(&qiov);
    qemu_io_free(buf);
    return 0;
}

//.........这里部分代码省略.........
        case 'p':
            pflag = 1;
            break;
        case 'P':
            Pflag = 1;
            pattern = parse_pattern(optarg);
            if (pattern < 0) {
                return 0;
            }
            break;
        case 'q':
            qflag = 1;
            break;
        case 'z':
            zflag = 1;
            break;
        default:
            return command_usage(&write_cmd);
        }
    }

    if (optind != argc - 2) {
        return command_usage(&write_cmd);
    }

    if (bflag + pflag + zflag > 1) {
        printf("-b, -p, or -z cannot be specified at the same time\n");
        return 0;
    }

    if (zflag && Pflag) {
        printf("-z and -P cannot be specified at the same time\n");
        return 0;
    }

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

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

    if (!pflag) {
        if (offset & 0x1ff) {
            printf("offset %" PRId64 " is not sector aligned\n",
                   offset);
            return 0;
        }

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

    if (!zflag) {
        buf = qemu_io_alloc(count, pattern);
    }

    gettimeofday(&t1, NULL);
    if (pflag) {
        cnt = do_pwrite(buf, offset, count, &total);
    } else if (bflag) {
        cnt = do_save_vmstate(buf, offset, count, &total);
    } else if (zflag) {
        cnt = do_co_write_zeroes(offset, count, &total);
    } else if (cflag) {
        cnt = do_write_compressed(buf, offset, count, &total);
    } else {
        cnt = do_write(buf, offset, count, &total);
    }
    gettimeofday(&t2, NULL);

    if (cnt < 0) {
        printf("write 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, offset, count, total, cnt, Cflag);

out:
    if (!zflag) {
        qemu_io_free(buf);
    }

    return 0;
}

static int readv_f(int argc, char **argv)
{
    struct timeval t1, t2;
    int Cflag = 0, qflag = 0, vflag = 0;
    int c, cnt;
    char *buf;
    int64_t offset;
    /* Some compilers get confused and warn if this is not initialized.  */
    int total = 0;
    int nr_iov;
    QEMUIOVector qiov;
    int pattern = 0;
    int Pflag = 0;

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

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


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

    if (offset & 0x1ff) {
        printf("offset %" PRId64 " is not sector aligned\n",
               offset);
        return 0;
    }

    nr_iov = argc - optind;
    buf = create_iovec(&qiov, &argv[optind], nr_iov, 0xab);
    if (buf == NULL) {
        return 0;
    }

    gettimeofday(&t1, NULL);
    cnt = do_aio_readv(&qiov, offset, &total);
    gettimeofday(&t2, NULL);

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

    if (Pflag) {
        void *cmp_buf = g_malloc(qiov.size);
        memset(cmp_buf, pattern, qiov.size);
        if (memcmp(buf, cmp_buf, qiov.size)) {
            printf("Pattern verification failed at offset %"
                   PRId64 ", %zd bytes\n", offset, qiov.size);
        }
        g_free(cmp_buf);
    }

    if (qflag) {
        goto out;
    }

    if (vflag) {
        dump_buffer(buf, offset, qiov.size);
    }

    /* Finally, report back -- -C gives a parsable format */
    t2 = tsub(t2, t1);
    print_report("read", &t2, offset, qiov.size, total, cnt, Cflag);

out:
    qemu_iovec_destroy(&qiov);
    qemu_io_free(buf);
    return 0;
}

//.........这里部分代码省略.........
            vflag = 1;
            break;
        default:
            return command_usage(&read_cmd);
        }
    }

    if (optind != argc - 2) {
        return command_usage(&read_cmd);
    }

    if (bflag && pflag) {
        printf("-b and -p cannot be specified at the same time\n");
        return 0;
    }

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

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

    if (!Pflag && (lflag || sflag)) {
        return command_usage(&read_cmd);
    }

    if (!lflag) {
        pattern_count = count - pattern_offset;
    }

    if ((pattern_count < 0) || (pattern_count + pattern_offset > count))  {
        printf("pattern verification range exceeds end of read data\n");
        return 0;
    }

    if (!pflag) {
        if (offset & 0x1ff) {
            printf("offset %" PRId64 " is not sector aligned\n",
                   offset);
            return 0;
        }
        if (count & 0x1ff) {
            printf("count %d is not sector aligned\n",
                   count);
            return 0;
        }
    }

    buf = qemu_io_alloc(count, 0xab);

    gettimeofday(&t1, NULL);
    if (pflag) {
        cnt = do_pread(buf, offset, count, &total);
    } else if (bflag) {
        cnt = do_load_vmstate(buf, offset, count, &total);
    } else {
        cnt = do_read(buf, offset, count, &total);
    }
    gettimeofday(&t2, NULL);

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

    if (Pflag) {
        void *cmp_buf = g_malloc(pattern_count);
        memset(cmp_buf, pattern, pattern_count);
        if (memcmp(buf + pattern_offset, cmp_buf, pattern_count)) {
            printf("Pattern verification failed at offset %"
                   PRId64 ", %d bytes\n",
                   offset + pattern_offset, pattern_count);
        }
        g_free(cmp_buf);
    }

    if (qflag) {
        goto out;
    }

    if (vflag) {
        dump_buffer(buf, offset, count);
    }

    /* Finally, report back -- -C gives a parsable format */
    t2 = tsub(t2, t1);
    print_report("read", &t2, offset, count, total, cnt, Cflag);

out:
    qemu_io_free(buf);

    return 0;
}

//.........这里部分代码省略.........

	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;
}

static int
write_f(int argc, char **argv)
{
	struct timeval t1, t2;
	int Cflag = 0, pflag = 0, qflag = 0, bflag = 0;
	int c, cnt;
	char *buf;
	int64_t offset;
	int count;
        
        int total = 0;
	int pattern = 0xcd;

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

	if (optind != argc - 2)
		return command_usage(&write_cmd);

	if (bflag && pflag) {
		printf("-b and -p cannot be specified at the same time\n");
		return 0;
	}

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

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

	if (!pflag) {
		if (offset & 0x1ff) {
                        printf("offset %" PRId64 " is not sector aligned\n",
                               offset);
			return 0;
		}

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

	buf = qemu_io_alloc(count, pattern);

	gettimeofday(&t1, NULL);
	if (pflag)
		cnt = do_pwrite(buf, offset, count, &total);
	else if (bflag)
		cnt = do_save_vmstate(buf, offset, count, &total);
	else
		cnt = do_write(buf, offset, count, &total);
	gettimeofday(&t2, NULL);

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

	if (qflag)
		goto out;

	
	t2 = tsub(t2, t1);
	print_report("wrote", &t2, offset, count, total, cnt, Cflag);

out:
	qemu_io_free(buf);

	return 0;
}