diff options
Diffstat (limited to 'tests/sys/aio/aio_kqueue_test.c')
| -rw-r--r-- | tests/sys/aio/aio_kqueue_test.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/tests/sys/aio/aio_kqueue_test.c b/tests/sys/aio/aio_kqueue_test.c new file mode 100644 index 000000000000..43a7ebf91f96 --- /dev/null +++ b/tests/sys/aio/aio_kqueue_test.c @@ -0,0 +1,234 @@ +/*- + * Copyright (C) 2005 IronPort Systems, Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Prerequisities: + * - AIO support must be compiled into the kernel (see sys/<arch>/NOTES for + * more details). + * + * Note: it is a good idea to run this against a physical drive to + * exercise the physio fast path (ie. aio_kqueue /dev/<something safe>) + */ + +#include <sys/types.h> +#include <sys/event.h> +#include <sys/time.h> +#include <assert.h> +#include <aio.h> +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> + +#include "local.h" + +#define PATH_TEMPLATE "aio.XXXXXXXXXX" + +#define MAX_RUNS 300 +/* #define DEBUG */ + +int +main (int argc, char *argv[]) +{ + struct aiocb **iocb, *kq_iocb; + char *file, pathname[sizeof(PATH_TEMPLATE)+1]; + struct kevent kq_returned; + struct timespec ts; + char buffer[32768]; + int max_queue_per_proc; + size_t max_queue_per_proc_size; +#ifdef DEBUG + int cancel, error; +#endif + int failed = 0, fd, kq, pending, result, run; + int tmp_file = 0; + int i, j; + + PLAIN_REQUIRE_UNSAFE_AIO(0); + + max_queue_per_proc_size = sizeof(max_queue_per_proc); + if (sysctlbyname("vfs.aio.max_aio_queue_per_proc", + &max_queue_per_proc, &max_queue_per_proc_size, NULL, 0) != 0) + err(1, "sysctlbyname"); + iocb = calloc(max_queue_per_proc, sizeof(struct aiocb*)); + if (iocb == NULL) + err(1, "calloc"); + + kq = kqueue(); + if (kq < 0) { + perror("No kqeueue\n"); + exit(1); + } + + if (argc == 1) { + strcpy(pathname, PATH_TEMPLATE); + fd = mkstemp(pathname); + file = pathname; + tmp_file = 1; + } else { + file = argv[1]; + fd = open(file, O_RDWR|O_CREAT, 0666); + } + if (fd == -1) + err(1, "Can't open %s\n", file); + + for (run = 0; run < MAX_RUNS; run++){ +#ifdef DEBUG + printf("Run %d\n", run); +#endif + for (i = 0; i < max_queue_per_proc; i++) { + iocb[i] = (struct aiocb *)calloc(1, + sizeof(struct aiocb)); + if (iocb[i] == NULL) + err(1, "calloc"); + } + + pending = 0; + for (i = 0; i < max_queue_per_proc; i++) { + pending++; + iocb[i]->aio_nbytes = sizeof(buffer); + iocb[i]->aio_buf = buffer; + iocb[i]->aio_fildes = fd; + iocb[i]->aio_offset = iocb[i]->aio_nbytes * i * run; + + iocb[i]->aio_sigevent.sigev_notify_kqueue = kq; + iocb[i]->aio_sigevent.sigev_value.sival_ptr = iocb[i]; + iocb[i]->aio_sigevent.sigev_notify = SIGEV_KEVENT; + + result = aio_write(iocb[i]); + if (result != 0) { + perror("aio_write"); + printf("Result %d iteration %d\n", result, i); + exit(1); + } +#ifdef DEBUG + printf("WRITE %d is at %p\n", i, iocb[i]); +#endif + result = rand(); + if (result < RAND_MAX/32) { + if (result > RAND_MAX/64) { + result = aio_cancel(fd, iocb[i]); +#ifdef DEBUG + printf("Cancel %d %p result %d\n", i, iocb[i], result); +#endif + if (result == AIO_CANCELED) { + aio_return(iocb[i]); + iocb[i] = NULL; + pending--; + } + } + } + } +#ifdef DEBUG + cancel = max_queue_per_proc - pending; +#endif + + i = 0; + while (pending) { + + for (;;) { + + bzero(&kq_returned, sizeof(kq_returned)); + ts.tv_sec = 0; + ts.tv_nsec = 1; + result = kevent(kq, NULL, 0, + &kq_returned, 1, &ts); +#ifdef DEBUG + error = errno; +#endif + if (result < 0) + perror("kevent error: "); + kq_iocb = kq_returned.udata; +#ifdef DEBUG + printf("kevent %d %d errno %d return.ident %p " + "return.data %p return.udata %p %p" + " filter %d flags %#x fflags %#x\n", + i, result, error, + (void*)kq_returned.ident, + (void*)kq_returned.data, + kq_returned.udata, + kq_iocb, + kq_returned.filter, + kq_returned.flags, + kq_returned.fflags); + if (result > 0) + printf("\tsigev_notify_kevent_flags %#x\n", + ((struct aiocb*)(kq_returned.ident))->aio_sigevent.sigev_notify_kevent_flags); +#endif + + if (kq_iocb) + break; +#ifdef DEBUG + printf("Try again left %d out of %d %d\n", + pending, max_queue_per_proc, cancel); +#endif + } + + for (j = 0; j < max_queue_per_proc && iocb[j] != kq_iocb; + j++) ; + assert(j < max_queue_per_proc); +#ifdef DEBUG + printf("kq_iocb %p\n", kq_iocb); + + printf("Error Result for %d is %d pending %d\n", + j, result, pending); +#endif + result = aio_return(kq_iocb); +#ifdef DEBUG + printf("Return Result for %d is %d\n\n", j, result); +#endif + if (result != sizeof(buffer)) { + printf("FAIL: run %d, operation %d, result %d " + " (errno=%d) should be %zu\n", run, pending, + result, errno, sizeof(buffer)); + failed++; + } else + printf("PASS: run %d, left %d\n", run, + pending - 1); + + free(kq_iocb); + iocb[j] = NULL; + pending--; + i++; + } + + for (i = 0; i < max_queue_per_proc; i++) + free(iocb[i]); + + } + + if (tmp_file) + unlink(pathname); + + if (failed != 0) + printf("FAIL: %d tests failed\n", failed); + else + printf("PASS: All tests passed\n"); + + exit (failed == 0 ? 0 : 1); +} |