238 lines
6.1 KiB
C
238 lines
6.1 KiB
C
/*-
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* Copyright (C) 2005 IronPort Systems, Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Prerequisities:
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* - AIO support must be compiled into the kernel (see sys/<arch>/NOTES for
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* more details).
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*
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* Note: it is a good idea to run this against a physical drive to
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* exercise the physio fast path (ie. aio_kqueue /dev/<something safe>)
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*/
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#include <sys/types.h>
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#include <sys/event.h>
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#include <sys/time.h>
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#include <aio.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "freebsd_test_suite/macros.h"
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#include "local.h"
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#define PATH_TEMPLATE "aio.XXXXXXXXXX"
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#define MAX_RUNS 300
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/* #define DEBUG */
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int
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main (int argc, char *argv[])
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{
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struct aiocb **iocb, *kq_iocb;
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char *file, pathname[sizeof(PATH_TEMPLATE)+1];
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struct kevent ke, kq_returned;
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struct timespec ts;
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char buffer[32768];
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int max_queue_per_proc;
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size_t max_queue_per_proc_size;
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#ifdef DEBUG
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int cancel, error;
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#endif
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int failed = 0, fd, kq, pending, result, run;
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int tmp_file = 0;
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int i, j;
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PLAIN_REQUIRE_KERNEL_MODULE("aio", 0);
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PLAIN_REQUIRE_UNSAFE_AIO(0);
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max_queue_per_proc_size = sizeof(max_queue_per_proc);
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if (sysctlbyname("vfs.aio.max_aio_queue_per_proc",
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&max_queue_per_proc, &max_queue_per_proc_size, NULL, 0) != 0)
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err(1, "sysctlbyname");
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iocb = calloc(max_queue_per_proc, sizeof(struct aiocb*));
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if (iocb == NULL)
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err(1, "calloc");
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kq = kqueue();
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if (kq < 0) {
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perror("No kqeueue\n");
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exit(1);
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}
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if (argc == 1) {
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strcpy(pathname, PATH_TEMPLATE);
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fd = mkstemp(pathname);
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file = pathname;
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tmp_file = 1;
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} else {
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file = argv[1];
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fd = open(file, O_RDWR|O_CREAT, 0666);
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}
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if (fd == -1)
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err(1, "Can't open %s\n", file);
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for (run = 0; run < MAX_RUNS; run++){
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#ifdef DEBUG
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printf("Run %d\n", run);
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#endif
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for (i = 0; i < max_queue_per_proc; i++) {
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iocb[i] = (struct aiocb *)calloc(1,
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sizeof(struct aiocb));
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if (iocb[i] == NULL)
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err(1, "calloc");
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}
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pending = 0;
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for (i = 0; i < max_queue_per_proc; i++) {
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pending++;
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iocb[i]->aio_nbytes = sizeof(buffer);
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iocb[i]->aio_buf = buffer;
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iocb[i]->aio_fildes = fd;
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iocb[i]->aio_offset = iocb[i]->aio_nbytes * i * run;
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iocb[i]->aio_sigevent.sigev_notify_kqueue = kq;
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iocb[i]->aio_sigevent.sigev_value.sival_ptr = iocb[i];
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iocb[i]->aio_sigevent.sigev_notify = SIGEV_KEVENT;
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result = aio_write(iocb[i]);
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if (result != 0) {
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perror("aio_write");
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printf("Result %d iteration %d\n", result, i);
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exit(1);
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}
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#ifdef DEBUG
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printf("WRITE %d is at %p\n", i, iocb[i]);
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#endif
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result = rand();
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if (result < RAND_MAX/32) {
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if (result > RAND_MAX/64) {
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result = aio_cancel(fd, iocb[i]);
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#ifdef DEBUG
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printf("Cancel %d %p result %d\n", i, iocb[i], result);
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#endif
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if (result == AIO_CANCELED) {
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aio_return(iocb[i]);
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iocb[i] = NULL;
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pending--;
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}
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}
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}
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}
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#ifdef DEBUG
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cancel = max_queue_per_proc - pending;
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#endif
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i = 0;
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while (pending) {
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for (;;) {
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bzero(&ke, sizeof(ke));
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bzero(&kq_returned, sizeof(ke));
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ts.tv_sec = 0;
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ts.tv_nsec = 1;
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result = kevent(kq, NULL, 0,
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&kq_returned, 1, &ts);
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#ifdef DEBUG
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error = errno;
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#endif
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if (result < 0)
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perror("kevent error: ");
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kq_iocb = kq_returned.udata;
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#ifdef DEBUG
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printf("kevent %d %d errno %d return.ident %p "
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"return.data %p return.udata %p %p"
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" filter %d flags %#x fflags %#x\n",
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i, result, error,
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(void*)kq_returned.ident,
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(void*)kq_returned.data,
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kq_returned.udata,
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kq_iocb,
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kq_returned.filter,
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kq_returned.flags,
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kq_returned.fflags);
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if (result > 0)
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printf("\tsigev_notify_kevent_flags %#x\n",
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((struct aiocb*)(kq_returned.ident))->aio_sigevent.sigev_notify_kevent_flags);
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#endif
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if (kq_iocb)
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break;
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#ifdef DEBUG
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printf("Try again left %d out of %d %d\n",
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pending, max_queue_per_proc, cancel);
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#endif
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}
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for (j = 0; j < max_queue_per_proc && iocb[j] != kq_iocb;
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j++) ;
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#ifdef DEBUG
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printf("kq_iocb %p\n", kq_iocb);
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printf("Error Result for %d is %d pending %d\n",
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j, result, pending);
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#endif
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result = aio_return(kq_iocb);
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#ifdef DEBUG
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printf("Return Result for %d is %d\n\n", j, result);
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#endif
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if (result != sizeof(buffer)) {
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printf("FAIL: run %d, operation %d, result %d "
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" (errno=%d) should be %zu\n", run, pending,
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result, errno, sizeof(buffer));
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failed++;
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} else
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printf("PASS: run %d, left %d\n", run,
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pending - 1);
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free(kq_iocb);
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iocb[j] = NULL;
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pending--;
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i++;
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}
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for (i = 0; i < max_queue_per_proc; i++)
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free(iocb[i]);
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}
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if (tmp_file)
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unlink(pathname);
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if (failed != 0)
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printf("FAIL: %d tests failed\n", failed);
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else
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printf("PASS: All tests passed\n");
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exit (failed == 0 ? 0 : 1);
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}
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