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101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
4 years ago
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _LINUX_TIME_H
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#define _LINUX_TIME_H
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#include <linux/types.h>
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#ifndef _STRUCT_TIMESPEC
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#define _STRUCT_TIMESPEC
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struct timespec {
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__kernel_time_t tv_sec; /* seconds */
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long tv_nsec; /* nanoseconds */
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};
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#endif
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struct timeval {
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__kernel_time_t tv_sec; /* seconds */
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__kernel_suseconds_t tv_usec; /* microseconds */
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};
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struct timezone {
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int tz_minuteswest; /* minutes west of Greenwich */
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int tz_dsttime; /* type of dst correction */
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};
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/*
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* Names of the interval timers, and structure
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* defining a timer setting:
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*/
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#define ITIMER_REAL 0
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#define ITIMER_VIRTUAL 1
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#define ITIMER_PROF 2
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struct itimerspec {
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struct timespec it_interval; /* timer period */
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struct timespec it_value; /* timer expiration */
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};
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struct itimerval {
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struct timeval it_interval; /* timer interval */
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struct timeval it_value; /* current value */
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};
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#ifndef __kernel_timespec
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struct __kernel_timespec {
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__kernel_time64_t tv_sec; /* seconds */
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long long tv_nsec; /* nanoseconds */
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};
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#endif
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#ifndef __kernel_itimerspec
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struct __kernel_itimerspec {
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struct __kernel_timespec it_interval; /* timer period */
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struct __kernel_timespec it_value; /* timer expiration */
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};
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#endif
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/*
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* legacy timeval structure, only embedded in structures that
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* traditionally used 'timeval' to pass time intervals (not absolute
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* times). Do not add new users. If user space fails to compile
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* here, this is probably because it is not y2038 safe and needs to
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* be changed to use another interface.
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*/
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struct __kernel_old_timeval {
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__kernel_long_t tv_sec;
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__kernel_long_t tv_usec;
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};
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/*
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* The IDs of the various system clocks (for POSIX.1b interval timers):
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*/
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#define CLOCK_REALTIME 0
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#define CLOCK_MONOTONIC 1
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#define CLOCK_PROCESS_CPUTIME_ID 2
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#define CLOCK_THREAD_CPUTIME_ID 3
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#define CLOCK_MONOTONIC_RAW 4
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#define CLOCK_REALTIME_COARSE 5
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#define CLOCK_MONOTONIC_COARSE 6
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#define CLOCK_BOOTTIME 7
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#define CLOCK_REALTIME_ALARM 8
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#define CLOCK_BOOTTIME_ALARM 9
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/*
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* The driver implementing this got removed. The clock ID is kept as a
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* place holder. Do not reuse!
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*/
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#define CLOCK_SGI_CYCLE 10
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#define CLOCK_TAI 11
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#define MAX_CLOCKS 16
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#define CLOCKS_MASK (CLOCK_REALTIME | CLOCK_MONOTONIC)
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#define CLOCKS_MONO CLOCK_MONOTONIC
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/*
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* The various flags for setting POSIX.1b interval timers:
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*/
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#define TIMER_ABSTIME 0x01
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#endif /* _LINUX_TIME_H */
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