89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2018 Canonical. All rights reserved.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <libaio.h>
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#include <err.h>
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io_context_t io_ctx;
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static void
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do_sync_io(struct iocb *iocb)
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{
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struct io_event event;
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struct iocb *iocbs[] = { iocb };
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struct timespec ts = { 30, 0 };
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if (io_submit(io_ctx, 1, iocbs) != 1)
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err(1, "io_submit failed");
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if (io_getevents(io_ctx, 0, 1, &event, &ts) != 1)
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err(1, "io_getevents failed");
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}
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int
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main(int argc, char **argv)
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{
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char *buf;
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int page_size = getpagesize();
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int buf_size = strtol(argv[2], NULL, 0);
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int rwfd;
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struct iocb iocb;
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if (io_queue_init(1024, &io_ctx))
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err(1, "io_queue_init failed");
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rwfd = open(argv[1], O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
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if (rwfd < 0)
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err(1, "open failed");
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if (ftruncate(rwfd, buf_size) < 0)
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err(1, "ftruncate failed");
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buf = mmap(0, page_size, PROT_READ | PROT_WRITE, MAP_SHARED, rwfd, 0);
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if (buf == MAP_FAILED)
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err(1, "mmap failed");
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(void) io_prep_pwrite(&iocb, rwfd, buf, buf_size, 0);
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do_sync_io(&iocb);
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(void) io_prep_pread(&iocb, rwfd, buf, buf_size, 0);
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do_sync_io(&iocb);
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if (close(rwfd))
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err(1, "close failed");
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if (io_queue_release(io_ctx) != 0)
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err(1, "io_queue_release failed");
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return (0);
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}
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