diff options
| -rw-r--r-- | misc/Makefile | 2 | ||||
| -rw-r--r-- | misc/tst-select.c | 71 |
2 files changed, 72 insertions, 1 deletions
diff --git a/misc/Makefile b/misc/Makefile index cfc1535..38dad73 100644 --- a/misc/Makefile +++ b/misc/Makefile @@ -88,7 +88,7 @@ tests := tst-dirname tst-tsearch tst-fdset tst-mntent tst-hsearch \ tst-preadvwritev tst-preadvwritev64 tst-makedev tst-empty \ tst-preadvwritev2 tst-preadvwritev64v2 tst-warn-wide \ tst-ldbl-warn tst-ldbl-error tst-dbl-efgcvt tst-ldbl-efgcvt \ - tst-mntent-autofs tst-syscalls tst-mntent-escape + tst-mntent-autofs tst-syscalls tst-mntent-escape tst-select # Tests which need libdl. ifeq (yes,$(build-shared)) diff --git a/misc/tst-select.c b/misc/tst-select.c new file mode 100644 index 0000000..7c31025 --- /dev/null +++ b/misc/tst-select.c @@ -0,0 +1,71 @@ +/* Test for select timeout. + Copyright (C) 2021 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 + <https://www.gnu.org/licenses/>. */ + +#include <time.h> +#include <errno.h> +#include <stdbool.h> +#include <sys/select.h> +#include <support/check.h> +#include <support/xtime.h> +#include <support/timespec.h> + +#define TST_SELECT_TIMEOUT 1 +#define TST_SELECT_FD_ERR 2 + +static int +test_select_timeout (bool zero_tmo) +{ + const int fds = TST_SELECT_FD_ERR; + int timeout = TST_SELECT_TIMEOUT; + struct timeval to = { 0, 0 }; + struct timespec ts; + fd_set rfds; + + FD_ZERO (&rfds); + FD_SET (fds, &rfds); + + if (zero_tmo) + timeout = 0; + + to.tv_sec = timeout; + ts = xclock_now (CLOCK_REALTIME); + ts = timespec_add (ts, (struct timespec) { timeout, 0 }); + + /* Wait for timeout. */ + int ret = select (fds + 1, &rfds, NULL, NULL, &to); + if (ret == -1) + FAIL_EXIT1 ("select failed: %m\n"); + + TEST_TIMESPEC_NOW_OR_AFTER (CLOCK_REALTIME, ts); + + return 0; +} + +static int +do_test (void) +{ + /* Check if select exits immediately. */ + test_select_timeout (true); + + /* Check if select exits after specified timeout. */ + test_select_timeout (false); + + return 0; +} + +#include <support/test-driver.c> |