time.h (1793B)
1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2#ifndef _UAPI_LINUX_TIME_H 3#define _UAPI_LINUX_TIME_H 4 5#include <linux/types.h> 6#include <linux/time_types.h> 7 8#ifndef __KERNEL__ 9#ifndef _STRUCT_TIMESPEC 10#define _STRUCT_TIMESPEC 11struct timespec { 12 __kernel_old_time_t tv_sec; /* seconds */ 13 long tv_nsec; /* nanoseconds */ 14}; 15#endif 16 17struct timeval { 18 __kernel_old_time_t tv_sec; /* seconds */ 19 __kernel_suseconds_t tv_usec; /* microseconds */ 20}; 21 22struct itimerspec { 23 struct timespec it_interval;/* timer period */ 24 struct timespec it_value; /* timer expiration */ 25}; 26 27struct itimerval { 28 struct timeval it_interval;/* timer interval */ 29 struct timeval it_value; /* current value */ 30}; 31#endif 32 33struct timezone { 34 int tz_minuteswest; /* minutes west of Greenwich */ 35 int tz_dsttime; /* type of dst correction */ 36}; 37 38/* 39 * Names of the interval timers, and structure 40 * defining a timer setting: 41 */ 42#define ITIMER_REAL 0 43#define ITIMER_VIRTUAL 1 44#define ITIMER_PROF 2 45 46/* 47 * The IDs of the various system clocks (for POSIX.1b interval timers): 48 */ 49#define CLOCK_REALTIME 0 50#define CLOCK_MONOTONIC 1 51#define CLOCK_PROCESS_CPUTIME_ID 2 52#define CLOCK_THREAD_CPUTIME_ID 3 53#define CLOCK_MONOTONIC_RAW 4 54#define CLOCK_REALTIME_COARSE 5 55#define CLOCK_MONOTONIC_COARSE 6 56#define CLOCK_BOOTTIME 7 57#define CLOCK_REALTIME_ALARM 8 58#define CLOCK_BOOTTIME_ALARM 9 59/* 60 * The driver implementing this got removed. The clock ID is kept as a 61 * place holder. Do not reuse! 62 */ 63#define CLOCK_SGI_CYCLE 10 64#define CLOCK_TAI 11 65 66#define MAX_CLOCKS 16 67#define CLOCKS_MASK (CLOCK_REALTIME | CLOCK_MONOTONIC) 68#define CLOCKS_MONO CLOCK_MONOTONIC 69 70/* 71 * The various flags for setting POSIX.1b interval timers: 72 */ 73#define TIMER_ABSTIME 0x01 74 75#endif /* _UAPI_LINUX_TIME_H */