更新日期: 2022/06/01 来源: https://gitee.com/weharmony/kernel_liteos_a_note
time_posix.h
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1/*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 * of conditions and the following disclaimer in the documentation and/or other materials
13 * provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 * to endorse or promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#ifndef _TIME_PRI_H
33#define _TIME_PRI_H
34
35#include "time.h"
36#include "errno.h"
37#include "los_sys_pri.h"
38
39#ifdef __cplusplus
40#if __cplusplus
41extern "C" {
42#endif /* __cplusplus */
43#endif /* __cplusplus */
44
45struct ksigevent {
46 union sigval sigev_value;
50};
51
52/* internal functions */
53STATIC INLINE BOOL ValidTimeSpec(const struct timespec *tp)
54{
55 /* Fail a NULL pointer */
56 if (tp == NULL) {
57 return FALSE;
58 }
59
60 /* Fail illegal nanosecond values */
61 if ((tp->tv_nsec < 0) || (tp->tv_nsec >= OS_SYS_NS_PER_SECOND) || (tp->tv_sec < 0)) {
62 return FALSE;
63 }
64
65 return TRUE;
66}
67
68STATIC INLINE UINT32 OsTimeSpec2Tick(const struct timespec *tp)
69{
70 UINT64 tick, ns;
71
72 ns = (UINT64)tp->tv_sec * OS_SYS_NS_PER_SECOND + tp->tv_nsec;
73 /* Round up for ticks */
74 tick = (ns * LOSCFG_BASE_CORE_TICK_PER_SECOND + (OS_SYS_NS_PER_SECOND - 1)) / OS_SYS_NS_PER_SECOND;
75 if (tick > LOS_WAIT_FOREVER) {
76 tick = LOS_WAIT_FOREVER;
77 }
78 return (UINT32)tick;
79}
80
81STATIC INLINE VOID OsTick2TimeSpec(struct timespec *tp, UINT32 tick)
82{
83 UINT64 ns = ((UINT64)tick * OS_SYS_NS_PER_SECOND) / LOSCFG_BASE_CORE_TICK_PER_SECOND;
84 tp->tv_sec = (time_t)(ns / OS_SYS_NS_PER_SECOND);
85 tp->tv_nsec = (long)(ns % OS_SYS_NS_PER_SECOND);
86}
87
88int OsTimerCreate(clockid_t, struct ksigevent *__restrict, timer_t *__restrict);
89void OsAdjTime(void);
90
91#ifdef __cplusplus
92#if __cplusplus
93}
94#endif /* __cplusplus */
95#endif /* __cplusplus */
96#endif /* _TIME_PRI_H */
long unsigned int UINT64
Definition: los_typedef.h:66
unsigned int UINT32
Definition: los_typedef.h:57
size_t BOOL
Definition: los_typedef.h:88
int sigev_tid
Definition: time_posix.h:49
int sigev_signo
Definition: time_posix.h:47
union sigval sigev_value
Definition: time_posix.h:46
int sigev_notify
Definition: time_posix.h:48
ARG_NUM_3 ARG_NUM_1 ARG_NUM_2 ARG_NUM_2 ARG_NUM_3 ARG_NUM_1 ARG_NUM_4 ARG_NUM_2 ARG_NUM_2 ARG_NUM_5 ARG_NUM_2 ARG_NUM_0 ARG_NUM_2 ARG_NUM_1 ARG_NUM_2 ARG_NUM_3 ARG_NUM_7 ARG_NUM_2 ARG_NUM_3 ARG_NUM_2 ARG_NUM_4 ARG_NUM_5 ARG_NUM_6 ARG_NUM_3 ARG_NUM_5 ARG_NUM_7 ARG_NUM_1 ARG_NUM_4 ARG_NUM_5 ARG_NUM_4 ARG_NUM_7 ARG_NUM_2 ARG_NUM_3 ARG_NUM_7 ARG_NUM_7 ARG_NUM_3 ARG_NUM_3 ARG_NUM_3 ARG_NUM_7 ARG_NUM_3 ARG_NUM_2 char ARG_NUM_2 ARG_NUM_1 ARG_NUM_0 ARG_NUM_0 ARG_NUM_3 void ARG_NUM_1 ARG_NUM_0 unsigned ARG_NUM_0 ARG_NUM_2 ARG_NUM_3 ARG_NUM_2 ARG_NUM_5 ARG_NUM_3 ARG_NUM_3 ARG_NUM_4 ARG_NUM_1 ARG_NUM_1 ARG_NUM_3 ARG_NUM_2 ARG_NUM_1 ARG_NUM_4 ARG_NUM_4 ARG_NUM_5 ARG_NUM_3 ARG_NUM_2 void ARG_NUM_6 unsigned ARG_NUM_0 unsigned ARG_NUM_0 ARG_NUM_3 ARG_NUM_3 ARG_NUM_2 ARG_NUM_2 ARG_NUM_1 ARG_NUM_2 ARG_NUM_1 char ARG_NUM_0 ARG_NUM_4 ARG_NUM_1 ARG_NUM_2 ARG_NUM_2 ARG_NUM_4 ARG_NUM_5 ARG_NUM_2 ARG_NUM_3 ARG_NUM_3 ARG_NUM_3 ARG_NUM_3 ARG_NUM_6 ARG_NUM_6 ARG_NUM_5 ARG_NUM_3 void ARG_NUM_3 ARG_NUM_3 ARG_NUM_5 ARG_NUM_1 unsigned ARG_NUM_3 long
STATIC INLINE BOOL ValidTimeSpec(const struct timespec *tp)
Definition: time_posix.h:53
STATIC INLINE VOID OsTick2TimeSpec(struct timespec *tp, UINT32 tick)
Definition: time_posix.h:81
int OsTimerCreate(clockid_t, struct ksigevent *__restrict, timer_t *__restrict)
Definition: time.c:842
STATIC INLINE UINT32 OsTimeSpec2Tick(const struct timespec *tp)
Definition: time_posix.h:68
void OsAdjTime(void)