cudaUtility.h

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/*
 * Copyright (c) 2017, NVIDIA CORPORATION. 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
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 */
 
#ifndef __CUDA_UTILITY_H_
#define __CUDA_UTILITY_H_
 
 
#include <cuda_runtime.h>
#include <cuda.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
 
#include "logging.h"
 
 
#define CUDA(x)                         cudaCheckError((x), #x, __FILE__, __LINE__)
 
#define CUDA_SUCCESS(x)                 (CUDA(x) == cudaSuccess)
 
#define CUDA_FAILED(x)                  (CUDA(x) != cudaSuccess)
 
#define CUDA_VERIFY(x)                  if(CUDA_FAILED(x))      return false;
 
#define LOG_CUDA "[cuda]   "
 
/*
 * define this if you want all cuda calls to be printed
 * @ingroup cudaError
 */
//#define CUDA_TRACE
 
 
 
inline cudaError_t cudaCheckError(cudaError_t retval, const char* txt, const char* file, int line )
{
#if !defined(CUDA_TRACE)
        if( retval == cudaSuccess)
                return cudaSuccess;
#endif
 
        //int activeDevice = -1;
        //cudaGetDevice(&activeDevice);
 
        //Log("[cuda]   device %i  -  %s\n", activeDevice, txt);
        
        if( retval == cudaSuccess )
        {
                LogDebug(LOG_CUDA "%s\n", txt);
        }
        else
        {
                LogError(LOG_CUDA "%s\n", txt);
        }
        
        if( retval != cudaSuccess )
        {
                LogError(LOG_CUDA "   %s (error %u) (hex 0x%02X)\n", cudaGetErrorString(retval), retval, retval);
                LogError(LOG_CUDA "   %s:%i\n", file, line);    
        }
 
        return retval;
}
 
 
#define CUDA_FREE(x)            if(x != NULL) { cudaFree(x); x = NULL; }
 
#define CUDA_FREE_HOST(x)       if(x != NULL) { cudaFreeHost(x); x = NULL; }
 
#define SAFE_DELETE(x)          if(x != NULL) { delete x; x = NULL; }
 
#define SAFE_FREE(x)            if(x != NULL) { free(x); x = NULL; }
 
 
inline __device__ __host__ int iDivUp( int a, int b )           { return (a % b != 0) ? (a / b + 1) : (a / b); }
 
 
#endif