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86d1e36f29
This should work on all byte addressable host systems using GCC/clang to build. The QEMU slirp code has been pried out of QEMU and stubs have been created to solve where the current slirp is entangled with the QEMU code. Ths slirp/simh directory contains all the necessary include and glue files to make this useful. Everything in the slirp directory is unmodified QEMU code.
61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
/*
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* QEMU System Emulator block accounting
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*
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* Copyright (c) 2011 Christoph Hellwig
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef BLOCK_ACCOUNTING_H
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#define BLOCK_ACCOUNTING_H
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#include <stdint.h>
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#include "qemu/typedefs.h"
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enum BlockAcctType {
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BLOCK_ACCT_READ,
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BLOCK_ACCT_WRITE,
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BLOCK_ACCT_FLUSH,
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BLOCK_MAX_IOTYPE,
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};
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typedef struct BlockAcctStats {
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uint64_t nr_bytes[BLOCK_MAX_IOTYPE];
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uint64_t nr_ops[BLOCK_MAX_IOTYPE];
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uint64_t total_time_ns[BLOCK_MAX_IOTYPE];
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uint64_t merged[BLOCK_MAX_IOTYPE];
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uint64_t wr_highest_sector;
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} BlockAcctStats;
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typedef struct BlockAcctCookie {
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int64_t bytes;
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int64_t start_time_ns;
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enum BlockAcctType type;
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} BlockAcctCookie;
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void block_acct_start(BlockAcctStats *stats, BlockAcctCookie *cookie,
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int64_t bytes, enum BlockAcctType type);
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void block_acct_done(BlockAcctStats *stats, BlockAcctCookie *cookie);
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void block_acct_highest_sector(BlockAcctStats *stats, int64_t sector_num,
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unsigned int nb_sectors);
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void block_acct_merge_done(BlockAcctStats *stats, enum BlockAcctType type,
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int num_requests);
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#endif
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