qcwcn/wifi_hal/sync.h

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <pthread.h>
#include "wifi_hal.h"
#include "common.h"

#ifndef __WIFI_HAL_SYNC_H__
#define __WIFI_HAL_SYNC_H__

class Mutex
{
private:
    pthread_mutex_t mMutex;
public:
    Mutex() {
        pthread_mutex_init(&mMutex, NULL);
    }
    ~Mutex() {
        pthread_mutex_destroy(&mMutex);
    }
    int tryLock() {
        return pthread_mutex_trylock(&mMutex);
    }
    int lock() {
        return pthread_mutex_lock(&mMutex);
    }
    void unlock() {
        pthread_mutex_unlock(&mMutex);
    }
};

class Condition
{
private:
    pthread_cond_t mCondition;
    pthread_mutex_t mMutex;

public:
    Condition() {
        pthread_mutex_init(&mMutex, NULL);
        pthread_cond_init(&mCondition, NULL);
    }
    ~Condition() {
        pthread_cond_destroy(&mCondition);
        pthread_mutex_destroy(&mMutex);
    }

    wifi_error wait() {
        int status = pthread_cond_wait(&mCondition, &mMutex);
        return mapKernelErrortoWifiHalError(status);
    }

    wifi_error wait(struct timespec abstime)
    {
        struct timeval now;
        int status;

        gettimeofday(&now,NULL);

        abstime.tv_sec += now.tv_sec;
        if(((abstime.tv_nsec + now.tv_usec*1000) > 1000*1000*1000) || (abstime.tv_nsec + now.tv_usec*1000 < 0))
        {
           abstime.tv_sec += 1;
           abstime.tv_nsec += now.tv_usec * 1000;
           abstime.tv_nsec -= 1000*1000*1000;
        }
        else
        {
            abstime.tv_nsec += now.tv_usec * 1000;
        }
        status = pthread_cond_timedwait(&mCondition, &mMutex, &abstime);
        return mapKernelErrortoWifiHalError(status);
    }

    void signal() {
        pthread_cond_signal(&mCondition);
    }
};

#endif