mirror of https://gitee.com/openkylin/qemu.git
64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
/*
|
|
* QEMU System Emulator block accounting
|
|
*
|
|
* Copyright (c) 2011 Christoph Hellwig
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "block/accounting.h"
|
|
#include "block/block_int.h"
|
|
#include "qemu/timer.h"
|
|
|
|
void block_acct_start(BlockAcctStats *stats, BlockAcctCookie *cookie,
|
|
int64_t bytes, enum BlockAcctType type)
|
|
{
|
|
assert(type < BLOCK_MAX_IOTYPE);
|
|
|
|
cookie->bytes = bytes;
|
|
cookie->start_time_ns = qemu_clock_get_ns(QEMU_CLOCK_REALTIME);
|
|
cookie->type = type;
|
|
}
|
|
|
|
void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie)
|
|
{
|
|
assert(cookie->type < BLOCK_MAX_IOTYPE);
|
|
|
|
stats->nr_bytes[cookie->type] += cookie->bytes;
|
|
stats->nr_ops[cookie->type]++;
|
|
stats->total_time_ns[cookie->type] +=
|
|
qemu_clock_get_ns(QEMU_CLOCK_REALTIME) - cookie->start_time_ns;
|
|
}
|
|
|
|
|
|
void block_acct_highest_sector(BlockAcctStats *stats, int64_t sector_num,
|
|
unsigned int nb_sectors)
|
|
{
|
|
if (stats->wr_highest_sector < sector_num + nb_sectors - 1) {
|
|
stats->wr_highest_sector = sector_num + nb_sectors - 1;
|
|
}
|
|
}
|
|
|
|
void block_acct_merge_done(BlockAcctStats *stats, enum BlockAcctType type,
|
|
int num_requests)
|
|
{
|
|
assert(type < BLOCK_MAX_IOTYPE);
|
|
stats->merged[type] += num_requests;
|
|
}
|