// Copyright (c) 2021 - present Advanced Micro Devices, Inc. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include "rtc.h"

std::mutex RTCKernel::compile_lock;

std::vector<char> RTCKernel::compile(const std::string& kernel_src)
{
    hiprtcProgram prog;
    // give it a .cu extension so it'll be compiled as HIP code
    if(hiprtcCreateProgram(&prog, kernel_src.c_str(), "rocfft_rtc.cu", 0, nullptr, nullptr)
       != HIPRTC_SUCCESS)
    {
        throw std::runtime_error("unable to create program");
    }

    std::vector<const char*> options;
    options.push_back("-O3");
    options.push_back("-std=c++14");

    auto compileResult = hiprtcCompileProgram(prog, options.size(), options.data());
    if(compileResult != HIPRTC_SUCCESS)
    {
        size_t logSize = 0;
        hiprtcGetProgramLogSize(prog, &logSize);

        if(logSize)
        {
            std::vector<char> log(logSize, '\0');
            if(hiprtcGetProgramLog(prog, log.data()) == HIPRTC_SUCCESS)
                throw std::runtime_error(log.data());
        }
        throw std::runtime_error("compile failed without log");
    }

    size_t codeSize;
    if(hiprtcGetCodeSize(prog, &codeSize) != HIPRTC_SUCCESS)
        throw std::runtime_error("failed to get code size");

    std::vector<char> code(codeSize);
    if(hiprtcGetCode(prog, code.data()) != HIPRTC_SUCCESS)
        throw std::runtime_error("failed to get code");
    hiprtcDestroyProgram(&prog);
    return code;
}