/**

 * Copyright (c) 2025 Huawei Technologies Co., Ltd.

 * This program is free software, you can redistribute it and/or modify it under the terms and conditions of

 * CANN Open Software License Agreement Version 2.0 (the "License").

 * Please refer to the License for details. You may not use this file except in compliance with the License.

 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED,

 * INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.

 * See LICENSE in the root of the software repository for the full text of the License.

 */



#include <iostream>

#include <thread>

#include "acl/acl.h"

#include "utils.h"



using namespace std;



extern void AddDo(uint32_t blockDim, void *stream, float *srcA, float *srcB, float *dst, uint32_t totalSize);



namespace {

    int Init(aclrtStream* stream)

    {

        CHECK_ERROR(aclrtSetDevice(0));

        CHECK_ERROR(aclrtCreateStream(stream));

        return 0;

    }



    int DeviceInfoQuery()

    {

        aclrtRunMode runMode;

        int64_t vectorCoreNum = 0;

        uint32_t deviceCount = 0;

        aclrtDeviceStatus deviceStatus;



        string socName = aclrtGetSocName();

        INFO_LOG("Current Ascend chipset platform is: %s.", socName.c_str());



        CHECK_ERROR(aclrtGetDeviceCount(&deviceCount));

        INFO_LOG("Get device count success. deviceCount: %d.", deviceCount);



        CHECK_ERROR(aclrtQueryDeviceStatus(0, &deviceStatus));

        INFO_LOG("Query device status success. deviceStatus: %d.", deviceStatus);



        CHECK_ERROR(aclrtGetRunMode(&runMode));

        if (runMode == 0) {

            INFO_LOG("RunMode is ACL_DEVICE.");

        } else if (runMode == 1) {

            INFO_LOG("RunMode is ACL_HOST.");

        } else {

            INFO_LOG("RunMode is invalid.");

        }



        aclrtUtilizationInfo utilizationInfo;

        utilizationInfo.utilizationExtend = nullptr;

        CHECK_ERROR(aclrtGetDeviceUtilizationRate(0, &utilizationInfo));

        INFO_LOG("Get device utilizationRate success. cubeUtilization %d, vectorUtilization %d, aicpuUtilization %d,"

            "memoryUtilization %d.",

            utilizationInfo.cubeUtilization, utilizationInfo.vectorUtilization, utilizationInfo.aicpuUtilization,

            utilizationInfo.memoryUtilization);



        int32_t leastPriority;

        int32_t greatestPriority;

        CHECK_ERROR(aclrtDeviceGetStreamPriorityRange(&leastPriority, &greatestPriority));

        INFO_LOG("Get stream priorityRange success. leastPriority %d, greatestPriority %d.", leastPriority,

            greatestPriority);

    

        CHECK_ERROR(aclrtGetDeviceInfo(0, ACL_DEV_ATTR_VECTOR_CORE_NUM, &vectorCoreNum));

        INFO_LOG("Get device info success. vectorCoreNum %ld.", vectorCoreNum);

        return 0;

    }



    void RunThread()

    {

        aclrtStream stream = nullptr;

        uint32_t resLimitValue = 0;



        auto ret = Init(&stream);

        if (ret != 0) {

            return;

        }



        ret = DeviceInfoQuery();

        if (ret != 0) {

            return;

        }



        // Define the parameters of the kernel function

        const uint32_t TOTAL_SIZE = 1024;

        const uint32_t DATA_SIZE = TOTAL_SIZE * static_cast<uint32_t>(sizeof(float));



        // Allocate memory on the host

        float *hostSrcA, *hostSrcB, *hostDst;

        aclrtMallocHost(reinterpret_cast<void **>(&hostSrcA), DATA_SIZE);

        aclrtMallocHost(reinterpret_cast<void **>(&hostSrcB), DATA_SIZE);

        aclrtMallocHost(reinterpret_cast<void **>(&hostDst), DATA_SIZE);



        // Allocate memory on the device

        float *devSrcA, *devSrcB, *devDst;

        aclrtMalloc(reinterpret_cast<void **>(&devSrcA), DATA_SIZE, ACL_MEM_MALLOC_HUGE_FIRST);

        aclrtMalloc(reinterpret_cast<void **>(&devSrcB), DATA_SIZE, ACL_MEM_MALLOC_HUGE_FIRST);

        aclrtMalloc(reinterpret_cast<void **>(&devDst), DATA_SIZE, ACL_MEM_MALLOC_HUGE_FIRST);



        // Initialize the test data

        for (uint32_t i = 0; i < TOTAL_SIZE; ++i) {

            hostSrcA[i] = static_cast<float>(i);

            hostSrcB[i] = static_cast<float>(i);

        }



        aclrtMemcpy(devSrcA, DATA_SIZE, hostSrcA, DATA_SIZE, ACL_MEMCPY_HOST_TO_DEVICE);

        aclrtMemcpy(devSrcB, DATA_SIZE, hostSrcB, DATA_SIZE, ACL_MEMCPY_HOST_TO_DEVICE);



        aclrtGetDeviceResLimit(0, ACL_RT_DEV_RES_VECTOR_CORE, &resLimitValue);

        INFO_LOG("Get device resLimit success. VECTOR_CORE %d.", resLimitValue);

        AddDo(resLimitValue, stream, devSrcA, devSrcB, devDst, TOTAL_SIZE);

        aclrtSynchronizeStream(stream);

        aclrtMemcpy(hostDst, DATA_SIZE, devDst, DATA_SIZE, ACL_MEMCPY_DEVICE_TO_HOST);



        INFO_LOG("Thr results (first 10 elements) of the kernel function:");

        for (int i = 0; i < 10; ++i) { // Display the first 10 elements

            INFO_LOG("Result: hostDst[%d]: %f Expected value: %f", i, hostDst[i], hostSrcA[i] + hostSrcB[i]);

        }



        aclrtResetDeviceResLimit(0);



        aclrtFree(devSrcA);

        aclrtFree(devSrcB);

        aclrtFree(devDst);

        aclrtFreeHost(hostSrcA);

        aclrtFreeHost(hostSrcB);



        aclrtDestroyStream(stream);

        aclrtResetDeviceForce(0);

    }

} // namespace



int32_t main(int argc, char const *argv[])

{

    INFO_LOG("Start to run device_multi_thread sample.");

    CHECK_ERROR(aclInit(nullptr));

    CHECK_ERROR(aclrtSetDevice(0));

    CHECK_ERROR(aclrtSetDeviceResLimit(0, ACL_RT_DEV_RES_VECTOR_CORE, 1));



    std::thread t1(RunThread);

    t1.join();



    CHECK_ERROR(aclFinalize());

    INFO_LOG("Run the device_multi_thread sample successfully.");



    return 0;

}