#pragma once
#include <memory>

struct DeviceMem
{
    DeviceMem() = delete;
    DeviceMem(std::size_t mem_size);
    void* GetDeviceBuffer();
    void ToDevice(const void* p);
    void FromDevice(void* p);
    ~DeviceMem();

    void* mpDeviceBuf;
    std::size_t mMemSize;
};

struct KernelTimerImpl;

struct KernelTimer
{
    KernelTimer();
    ~KernelTimer();
    void Start();
    void End();
    float GetElapsedTime() const;

    std::unique_ptr<KernelTimerImpl> impl;
};

void launch_kernel(const void* func, dim3 grid_dim, dim3 block_dim, void** args, float& time);