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
41 extern "C" {
42 #endif /* __cplusplus */
43 #endif /* __cplusplus */
44
45 struct ksigevent {
46 union sigval sigev_value;
47 int sigev_signo;
48 int sigev_notify;
49 int sigev_tid;
50 };
51
52 /* internal functions */
ValidTimeSpec(const struct timespec * tp)53 STATIC 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
OsTimeSpec2Tick(const struct timespec * tp)68 STATIC 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
OsTick2TimeSpec(struct timespec * tp,UINT32 tick)81 STATIC 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
88 int OsTimerCreate(clockid_t, struct ksigevent *__restrict, timer_t *__restrict);
89 void OsAdjTime(void);
90
91 #ifdef __cplusplus
92 #if __cplusplus
93 }
94 #endif /* __cplusplus */
95 #endif /* __cplusplus */
96 #endif /* _TIME_PRI_H */