10d163575Sopenharmony_ci/*
2 * Copyright (c) 2013-2019, Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020, 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#include "los_event.h"
33#include "linux/semaphore.h"
34#include "linux/wait.h"
35#include "sys/types.h"
36#include "poll.h"
37
38
39int _sema_init(losMutexDef_t *sem, unsigned int value)
40{
41    UINT32 semHandle;
42    UINT32 ret;
43
44    if ((sem == NULL) || (value > OS_SEM_COUNT_MAX)) {
45        return -1;
46    }
47
48    ret = LOS_SemCreate((UINT16)value, &semHandle);
49    if (ret != LOS_OK) {
50        return -1;
51    }
52
53    sem->sem = GET_SEM(semHandle);
54
55    return 0;
56}
57
58int _sema_lock(losMutexDef_t *sem)
59{
60    UINT32 ret;
61
62    if ((sem == NULL) || (sem->sem == NULL)) {
63        return -1;
64    }
65
66    if ((UINTPTR)sem->sem == UNINIT_VALUE) {
67        if (_sema_init(sem, sem->count) != 0) {
68            return -1;
69        }
70    }
71
72    ret = LOS_SemPend(sem->sem->semID, LOS_WAIT_FOREVER);
73    if (ret == LOS_OK) {
74        return 0;
75    }
76
77    return -1;
78}
79
80int _sema_trylock(losMutexDef_t *sem)
81{
82    UINT32 ret;
83
84    if ((sem == NULL) || (sem->sem == NULL)) {
85        return -1;
86    }
87
88    ret = LOS_SemPend(sem->sem->semID, LOS_NO_WAIT);
89    if (ret == LOS_OK) {
90        return 0;
91    }
92
93    return -1;
94}
95
96int _sema_unlock(losMutexDef_t *sem)
97{
98    UINT32 ret;
99
100    if ((sem == NULL) || (sem->sem == NULL)) {
101        return -1;
102    }
103
104    ret = LOS_SemPost(sem->sem->semID);
105    if (ret != LOS_OK) {
106        return -1;
107    }
108
109    return 0;
110}
111
112int _sema_destory(losMutexDef_t *sem)
113{
114    UINT32 ret;
115
116    if ((sem == NULL) || (sem->sem == NULL)) {
117        return -1;
118    }
119    if ((UINTPTR)sem->sem == UNINIT_VALUE) {
120        return -1;
121    }
122    ret = LOS_SemDelete(sem->sem->semID);
123    if (ret != LOS_OK) {
124        return -1;
125    }
126
127    return 0;
128}
129
130void __init_waitqueue_head(wait_queue_head_t *wait)
131{
132    if (wait == NULL) {
133        return;
134    }
135    (VOID)LOS_EventInit(&wait->stEvent);
136    spin_lock_init(&wait->lock);
137    LOS_ListInit(&wait->poll_queue);
138}
139
140void __wake_up_interruptible(wait_queue_head_t *wait)
141{
142    if (wait == NULL) {
143        return;
144    }
145    (VOID)LOS_EventWrite(&wait->stEvent, 0x1);
146    notify_poll(wait);
147}
148
149void __wake_up_interruptible_poll(wait_queue_head_t *wait, pollevent_t key)
150{
151    if (wait == NULL) {
152        return;
153    }
154    (VOID)LOS_EventWrite(&wait->stEvent, 0x1);
155    notify_poll_with_key(wait, key);
156}
157
158