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Diffstat (limited to 'REORG.TODO/rt/tst-aio7.c')
| -rw-r--r-- | REORG.TODO/rt/tst-aio7.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/REORG.TODO/rt/tst-aio7.c b/REORG.TODO/rt/tst-aio7.c new file mode 100644 index 0000000000..c8b094606b --- /dev/null +++ b/REORG.TODO/rt/tst-aio7.c @@ -0,0 +1,177 @@ +/* Test for AIO POSIX compliance. + Copyright (C) 2001-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <aio.h> +#include <error.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + + +/* We might wait for 3 seconds, so increase timeout to 10 seconds. */ +#define TIMEOUT 10 + + +#define TEST_FUNCTION do_test () +static int +do_test (void) +{ + int result = 0; + int piped[2]; + + /* Make a pipe that we will never write to, so we can block reading it. */ + if (pipe (piped) < 0) + { + perror ("pipe"); + return 1; + } + + /* Test for aio_cancel() detecting invalid file descriptor. */ + { + struct aiocb cb; + int fd = -1; + + cb.aio_fildes = fd; + cb.aio_offset = 0; + cb.aio_buf = NULL; + cb.aio_nbytes = 0; + cb.aio_reqprio = 0; + cb.aio_sigevent.sigev_notify = SIGEV_NONE; + + errno = 0; + + /* Case one: invalid fds that match. */ + if (aio_cancel (fd, &cb) != -1 || errno != EBADF) + { + if (errno == ENOSYS) + { + puts ("no aio support in this configuration"); + return 0; + } + + puts ("aio_cancel( -1, {-1..} ) did not return -1 or errno != EBADF"); + ++result; + } + + cb.aio_fildes = -2; + errno = 0; + + /* Case two: invalid fds that do not match; just print warning. */ + if (aio_cancel (fd, &cb) != -1 || errno != EBADF) + puts ("aio_cancel( -1, {-2..} ) did not return -1 or errno != EBADF"); + } + + /* Test for aio_fsync() detecting bad fd. */ + { + struct aiocb cb; + int fd = -1; + + cb.aio_fildes = fd; + cb.aio_offset = 0; + cb.aio_buf = NULL; + cb.aio_nbytes = 0; + cb.aio_reqprio = 0; + cb.aio_sigevent.sigev_notify = SIGEV_NONE; + + errno = 0; + + /* Case one: invalid fd. */ + if (aio_fsync (O_SYNC, &cb) != -1 || errno != EBADF) + { + puts ("aio_fsync( op, {-1..} ) did not return -1 or errno != EBADF"); + ++result; + } + } + + /* Test for aio_suspend() suspending even if completed elements in list. */ + { +#define BYTES 8 + const int ELEMS = 2; + int i, r, fd; + static char buff[BYTES]; + char name[] = "/tmp/aio7.XXXXXX"; + struct timespec timeout; + static struct aiocb cb0, cb1; + struct aiocb *list[ELEMS]; + + fd = mkstemp (name); + if (fd < 0) + error (1, errno, "creating temp file"); + + if (unlink (name)) + error (1, errno, "unlinking temp file"); + + if (write (fd, "01234567", BYTES) != BYTES) + error (1, errno, "writing to temp file"); + + cb0.aio_fildes = fd; + cb0.aio_offset = 0; + cb0.aio_buf = buff; + cb0.aio_nbytes = BYTES; + cb0.aio_reqprio = 0; + cb0.aio_sigevent.sigev_notify = SIGEV_NONE; + + r = aio_read (&cb0); + if (r != 0) + error (1, errno, "reading from file"); + + while (aio_error (&(cb0)) == EINPROGRESS) + usleep (10); + + for (i = 0; i < BYTES; i++) + printf ("%c ", buff[i]); + printf ("\n"); + + /* At this point, the first read is completed, so start another one on + the read half of a pipe on which nothing will be written. */ + cb1.aio_fildes = piped[0]; + cb1.aio_offset = 0; + cb1.aio_buf = buff; + cb1.aio_nbytes = BYTES; + cb1.aio_reqprio = 0; + cb1.aio_sigevent.sigev_notify = SIGEV_NONE; + + r = aio_read (&cb1); + if (r != 0) + error (1, errno, "reading from file"); + + /* Now call aio_suspend() with the two reads. It should return + * immediately according to the POSIX spec. + */ + list[0] = &cb0; + list[1] = &cb1; + timeout.tv_sec = 3; + timeout.tv_nsec = 0; + r = aio_suspend ((const struct aiocb * const *) list, ELEMS, &timeout); + + if (r == -1 && errno == EAGAIN) + { + puts ("aio_suspend([done,blocked],2,3) suspended thread"); + ++result; + } + + /* Note that CB1 is still pending, and so cannot be an auto variable. + Thus we also test that exiting with an outstanding request works. */ + } + + return result; +} + +#include "../test-skeleton.c" |