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2c0982eb93
For !__ASSUME_TIME64_SYSCALLS there is no need to issue a 64-bit syscall if the provided timeout fits in a 32-bit one. The 64-bit usage should be rare since the timeout is a relative one. Checked on i686-linux-gnu on a 4.15 kernel and on a 5.11 kernel (with and without --enable-kernel=5.1) and on x86_64-linux-gnu. Reviewed-by: Lukasz Majewski <lukma@denx.de>
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/* Test for timerfd related functions
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Copyright (C) 2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <intprops.h>
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#include <time.h>
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#include <support/check.h>
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#include <support/support.h>
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#include <support/xunistd.h>
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#include <support/timespec.h>
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#include <sys/time.h>
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#include <sys/timerfd.h>
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static void
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timerfd_test (void)
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{
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struct itimerspec settings = { { 0, 0 }, { 2, 0 } };
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struct itimerspec val;
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int fd, ret;
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fd = timerfd_create (CLOCK_REALTIME, 0);
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if (fd < 0)
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FAIL_EXIT1 ("*** timerfd_create failed: %m");
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/* Set the timer. */
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ret = timerfd_settime (fd, 0, &settings, NULL);
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if (ret != 0)
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FAIL_EXIT1 ("*** timerfd_settime failed: %m\n");
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/* Sleep for 1 second. */
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ret = usleep (1000000);
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if (ret != 0)
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FAIL_EXIT1 ("*** usleep failed: %m\n");
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/* Read the timer just after sleep. */
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ret = timerfd_gettime (fd, &val);
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if (ret != 0)
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FAIL_EXIT1 ("*** timerfd_gettime failed: %m\n");
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/* Check difference between timerfd_gettime calls. */
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TEST_COMPARE (support_timespec_check_in_range
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((struct timespec) { 1, 0 }, val.it_value, 0.9, 1.0), 1);
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xclose (fd);
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}
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static void
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timerfd_large_timeout (void)
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{
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int fd = timerfd_create (CLOCK_REALTIME, 0);
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TEST_VERIFY (fd != -1);
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support_create_timer (0, 100000000, false, NULL);
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struct itimerspec it = { { 0, 0 }, { TYPE_MAXIMUM (time_t), 0 } };
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int r = timerfd_settime (fd, 0, &it, NULL);
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if (r == 0)
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{
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uint64_t buf;
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TEST_COMPARE (read (fd, &buf, sizeof (buf)), -1);
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TEST_VERIFY (errno == EINTR);
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}
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else
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TEST_COMPARE (errno, EOVERFLOW);
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}
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static int
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do_test (void)
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{
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timerfd_test ();
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timerfd_large_timeout ();
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return 0;
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}
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#include <support/test-driver.c>
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