//<MStar Software>
//******************************************************************************
// MStar Software
// Copyright (c) 2010 - 2012 MStar Semiconductor, Inc. All rights reserved.
// All software, firmware and related documentation herein ("MStar Software") are
// intellectual property of MStar Semiconductor, Inc. ("MStar") and protected by
// law, including, but not limited to, copyright law and international treaties.
// Any use, modification, reproduction, retransmission, or republication of all 
// or part of MStar Software is expressly prohibited, unless prior written 
// permission has been granted by MStar. 
//
// By accessing, browsing and/or using MStar Software, you acknowledge that you
// have read, understood, and agree, to be bound by below terms ("Terms") and to
// comply with all applicable laws and regulations:
//
// 1. MStar shall retain any and all right, ownership and interest to MStar
//    Software and any modification/derivatives thereof.
//    No right, ownership, or interest to MStar Software and any
//    modification/derivatives thereof is transferred to you under Terms.
//
// 2. You understand that MStar Software might include, incorporate or be
//    supplied together with third party`s software and the use of MStar
//    Software may require additional licenses from third parties.  
//    Therefore, you hereby agree it is your sole responsibility to separately
//    obtain any and all third party right and license necessary for your use of
//    such third party`s software. 
//
// 3. MStar Software and any modification/derivatives thereof shall be deemed as
//    MStar`s confidential information and you agree to keep MStar`s 
//    confidential information in strictest confidence and not disclose to any
//    third party.  
//
// 4. MStar Software is provided on an "AS IS" basis without warranties of any
//    kind. Any warranties are hereby expressly disclaimed by MStar, including
//    without limitation, any warranties of merchantability, non-infringement of
//    intellectual property rights, fitness for a particular purpose, error free
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//    In no event shall MStar be liable for any direct, indirect, incidental or
//    consequential damages, including without limitation, lost of profit or
//    revenues, lost or damage of data, and unauthorized system use.
//    You agree that this Section 4 shall still apply without being affected
//    even if MStar Software has been modified by MStar in accordance with your
//    request or instruction for your use, except otherwise agreed by both
//    parties in writing.
//
// 5. If requested, MStar may from time to time provide technical supports or
//    services in relation with MStar Software to you for your use of
//    MStar Software in conjunction with your or your customer`s product
//    ("Services").
//    You understand and agree that, except otherwise agreed by both parties in
//    writing, Services are provided on an "AS IS" basis and the warranty
//    disclaimer set forth in Section 4 above shall apply.  
//
// 6. Nothing contained herein shall be construed as by implication, estoppels
//    or otherwise:
//    (a) conferring any license or right to use MStar name, trademark, service
//        mark, symbol or any other identification;
//    (b) obligating MStar or any of its affiliates to furnish any person,
//        including without limitation, you and your customers, any assistance
//        of any kind whatsoever, or any information; or 
//    (c) conferring any license or right under any intellectual property right.
//
// 7. These terms shall be governed by and construed in accordance with the laws
//    of Taiwan, R.O.C., excluding its conflict of law rules.
//    Any and all dispute arising out hereof or related hereto shall be finally
//    settled by arbitration referred to the Chinese Arbitration Association,
//    Taipei in accordance with the ROC Arbitration Law and the Arbitration
//    Rules of the Association by three (3) arbitrators appointed in accordance
//    with the said Rules.
//    The place of arbitration shall be in Taipei, Taiwan and the language shall
//    be English.  
//    The arbitration award shall be final and binding to both parties.
//
//******************************************************************************
//<MStar Software>
////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2008-2009 MStar Semiconductor, Inc.
// All rights reserved.
//
// Unless otherwise stipulated in writing, any and all information contained
// herein regardless in any format shall remain the sole proprietary of
// MStar Semiconductor Inc. and be kept in strict confidence
// ("MStar Confidential Information") by the recipient.
// Any unauthorized act including without limitation unauthorized disclosure,
// copying, use, reproduction, sale, distribution, modification, disassembling,
// reverse engineering and compiling of the contents of MStar Confidential
// Information is unlawful and strictly prohibited. MStar hereby reserves the
// rights to any and all damages, losses, costs and expenses resulting therefrom.
//
////////////////////////////////////////////////////////////////////////////////

#if defined (MSOS_TYPE_LINUX)
#include <sys/ipc.h>
#include <sys/shm.h>
#include <stdio.h>
#include <string.h>
#include <pthread.h>


#include "apiHSL.h"
#include "apiHSL_SHM.h"
#include "frhsl_autotest.h"

static pthread_mutex_t hslShmMutex;

MS_BOOL InitShareMemory(cHslSyncMem* syncMem, MS_BOOL create)
{
    if (pthread_mutex_init(&hslShmMutex, NULL))
    {
        printf("HSL: initMutex error\n");
        return false;
    }

    pthread_mutex_lock(&hslShmMutex);
  
    if( create )
    {
        syncMem->id = shmget(HSL_SHMEM_KEY, sizeof(cHslSyncData), IPC_CREAT| IPC_EXCL | 0777);
        if( syncMem->id == -1)
        {
            printf("HSL Can't get share memory!\nYour share memory might be off(SHMconfig option)!\n");
            return false;
        }
    }
    else
    {
        syncMem->id = shmget(HSL_SHMEM_KEY, 0, 0);
        if( syncMem->id == -1)
        {
            printf("HSL Can't locate share memory!\n");
            return false;
        }
    }

    syncMem->ptr = shmat(syncMem->id, NULL, 0);
    if( syncMem->ptr == NULL)
    {
        printf("HSL Map share memory failed!\n");
        return false;
    }

    syncMem->ptr->handled = true;
    pthread_mutex_unlock(&hslShmMutex);

    return true;
}


void FreeShareMemory(cHslSyncMem* syncMem)
{
    pthread_mutex_lock(&hslShmMutex);

    if(0 != shmdt(syncMem->ptr))
    {
        printf("shmdt failed!\n");
    }

    if(0 != shmctl(syncMem->id, IPC_RMID, NULL))
    {
        printf("shmctl(IPC_RMID) failed!\n");
    }
    pthread_mutex_unlock(&hslShmMutex);

    if(0 != pthread_mutex_destroy(&hslShmMutex))
    {
        printf("mutex_destroy error\n");
    }
}


MS_BOOL StoreShareMemory(cHslSyncMem* syncMem, void* source)
{
    MS_BOOL result = false;

    if( (syncMem->id == -1) ||
      (syncMem->ptr == NULL))
    {
        return false;
    }

    pthread_mutex_lock(&hslShmMutex);
    if( syncMem->ptr->handled )
    {
        syncMem->ptr->handled = false;
        memcpy(syncMem->ptr->data, source, HSL_SHMEM_SIZE);
        result = true;
    }
    pthread_mutex_unlock(&hslShmMutex);

    return result;
}

MS_BOOL RestoreShareMemory(cHslSyncMem* syncMem, void* dest)
{
    MS_BOOL result = false;

    if( (syncMem->id == -1) ||
        (syncMem->ptr == NULL))
    {
        return false;
    }

    pthread_mutex_lock(&hslShmMutex);
    if( syncMem->ptr->handled == false)
    {
        memcpy(dest, syncMem->ptr->data, HSL_SHMEM_SIZE);
        syncMem->ptr->handled = true;
        result = true;
    }
    pthread_mutex_unlock(&hslShmMutex);

    return result;
}
#endif