1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <pthread.h>
18
19#ifndef __WIFI_HAL_SYNC_H__
20#define __WIFI_HAL_SYNC_H__
21
22class Mutex
23{
24private:
25    pthread_mutex_t mMutex;
26public:
27    Mutex() {
28        pthread_mutex_init(&mMutex, NULL);
29    }
30    ~Mutex() {
31        pthread_mutex_destroy(&mMutex);
32    }
33    int tryLock() {
34        return pthread_mutex_trylock(&mMutex);
35    }
36    int lock() {
37        return pthread_mutex_lock(&mMutex);
38    }
39    void unlock() {
40        pthread_mutex_unlock(&mMutex);
41    }
42};
43
44class Condition
45{
46private:
47    pthread_cond_t mCondition;
48    pthread_mutex_t mMutex;
49
50public:
51    Condition() {
52        pthread_mutex_init(&mMutex, NULL);
53        pthread_cond_init(&mCondition, NULL);
54    }
55    ~Condition() {
56        pthread_cond_destroy(&mCondition);
57        pthread_mutex_destroy(&mMutex);
58    }
59
60    int wait() {
61        return pthread_cond_wait(&mCondition, &mMutex);
62    }
63
64    int wait(struct timespec abstime)
65    {
66        struct timeval now;
67
68        gettimeofday(&now,NULL);
69
70        abstime.tv_sec += now.tv_sec;
71        if(((abstime.tv_nsec + now.tv_usec*1000) > 1000*1000*1000) || (abstime.tv_nsec + now.tv_usec*1000 < 0))
72        {
73           abstime.tv_sec += 1;
74           abstime.tv_nsec += now.tv_usec * 1000;
75           abstime.tv_nsec -= 1000*1000*1000;
76        }
77        else
78        {
79            abstime.tv_nsec += now.tv_usec * 1000;
80        }
81        return pthread_cond_timedwait(&mCondition, &mMutex, &abstime);
82    }
83
84    void signal() {
85        pthread_cond_signal(&mCondition);
86    }
87};
88
89#endif
90