Benoît Canet | 5e5a94b | 2014-09-05 15:46:16 +0200 | [diff] [blame] | 1 | /* |
| 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 Canet | 5366d0c | 2014-09-05 15:46:18 +0200 | [diff] [blame] | 28 | void block_acct_start(BlockAcctStats *stats, BlockAcctCookie *cookie, |
| 29 | int64_t bytes, enum BlockAcctType type) |
Benoît Canet | 5e5a94b | 2014-09-05 15:46:16 +0200 | [diff] [blame] | 30 | { |
Benoît Canet | 28298fd | 2014-09-05 15:46:17 +0200 | [diff] [blame] | 31 | assert(type < BLOCK_MAX_IOTYPE); |
Benoît Canet | 5e5a94b | 2014-09-05 15:46:16 +0200 | [diff] [blame] | 32 | |
| 33 | cookie->bytes = bytes; |
| 34 | cookie->start_time_ns = get_clock(); |
| 35 | cookie->type = type; |
| 36 | } |
| 37 | |
Benoît Canet | 5366d0c | 2014-09-05 15:46:18 +0200 | [diff] [blame] | 38 | void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie) |
Benoît Canet | 5e5a94b | 2014-09-05 15:46:16 +0200 | [diff] [blame] | 39 | { |
Benoît Canet | 28298fd | 2014-09-05 15:46:17 +0200 | [diff] [blame] | 40 | assert(cookie->type < BLOCK_MAX_IOTYPE); |
Benoît Canet | 5e5a94b | 2014-09-05 15:46:16 +0200 | [diff] [blame] | 41 | |
Benoît Canet | 5366d0c | 2014-09-05 15:46:18 +0200 | [diff] [blame] | 42 | 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 Canet | 5e5a94b | 2014-09-05 15:46:16 +0200 | [diff] [blame] | 45 | } |
| 46 | |
| 47 | |
Benoît Canet | 5366d0c | 2014-09-05 15:46:18 +0200 | [diff] [blame] | 48 | void block_acct_highest_sector(BlockAcctStats *stats, int64_t sector_num, |
| 49 | unsigned int nb_sectors) |
Benoît Canet | 5e5a94b | 2014-09-05 15:46:16 +0200 | [diff] [blame] | 50 | { |
Benoît Canet | 5366d0c | 2014-09-05 15:46:18 +0200 | [diff] [blame] | 51 | if (stats->wr_highest_sector < sector_num + nb_sectors - 1) { |
| 52 | stats->wr_highest_sector = sector_num + nb_sectors - 1; |
Benoît Canet | 5e5a94b | 2014-09-05 15:46:16 +0200 | [diff] [blame] | 53 | } |
| 54 | } |