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Benoît Canet5e5a94b2014-09-05 15:46:16 +02001/*
2 * QEMU System Emulator block accounting
3 *
4 * Copyright (c) 2011 Christoph Hellwig
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25#include "block/accounting.h"
26#include "block/block_int.h"
27
Benoît Canet5366d0c2014-09-05 15:46:18 +020028void block_acct_start(BlockAcctStats *stats, BlockAcctCookie *cookie,
29 int64_t bytes, enum BlockAcctType type)
Benoît Canet5e5a94b2014-09-05 15:46:16 +020030{
Benoît Canet28298fd2014-09-05 15:46:17 +020031 assert(type < BLOCK_MAX_IOTYPE);
Benoît Canet5e5a94b2014-09-05 15:46:16 +020032
33 cookie->bytes = bytes;
34 cookie->start_time_ns = get_clock();
35 cookie->type = type;
36}
37
Benoît Canet5366d0c2014-09-05 15:46:18 +020038void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie)
Benoît Canet5e5a94b2014-09-05 15:46:16 +020039{
Benoît Canet28298fd2014-09-05 15:46:17 +020040 assert(cookie->type < BLOCK_MAX_IOTYPE);
Benoît Canet5e5a94b2014-09-05 15:46:16 +020041
Benoît Canet5366d0c2014-09-05 15:46:18 +020042 stats->nr_bytes[cookie->type] += cookie->bytes;
43 stats->nr_ops[cookie->type]++;
44 stats->total_time_ns[cookie->type] += get_clock() - cookie->start_time_ns;
Benoît Canet5e5a94b2014-09-05 15:46:16 +020045}
46
47
Benoît Canet5366d0c2014-09-05 15:46:18 +020048void block_acct_highest_sector(BlockAcctStats *stats, int64_t sector_num,
49 unsigned int nb_sectors)
Benoît Canet5e5a94b2014-09-05 15:46:16 +020050{
Benoît Canet5366d0c2014-09-05 15:46:18 +020051 if (stats->wr_highest_sector < sector_num + nb_sectors - 1) {
52 stats->wr_highest_sector = sector_num + nb_sectors - 1;
Benoît Canet5e5a94b2014-09-05 15:46:16 +020053 }
54}