src/MemoryManager.h

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#ifndef _DJS_MEMORYMANAGER_H_
#define _DJS_MEMORYMANAGER_H_

/* 
    This program is free software: you can redistribute it and/or modify 
    it under the terms of the GNU General Public License as published by 
    the Free Software Foundation, either version 3 of the License, or 
    (at your option) any later version. 
 
    This program is distributed in the hope that it will be useful, 
    but WITHOUT ANY WARRANTY; without even the implied warranty of 
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
    GNU General Public License for more details. 
 
    You should have received a copy of the GNU General Public License 
    along with this program.  If not, see <http://www.gnu.org/licenses/> 
*/

#include<stdlib.h>

#ifdef MEMORY_DEBUG
#include<stdio.h>

static void* MallocWithCheck(size_t x)
{
    #ifdef ALLOW_ALLOC_ZERO_BYTES
    void* retvalue = malloc(x);
    #else
    void* retvalue = malloc(max(x,1));
    #endif

    if(retvalue==NULL)
    {
        fprintf(stderr, "ERROR, malloc returned null pointer, that means we probably ran out of memory...\n");
        exit(1);
    }

    return retvalue;
};

static void* CallocWithCheck(size_t x, size_t y)
{
    #ifdef ALLOW_ALLOC_ZERO_BYTES
    void* retvalue = calloc(x,y); 
    #else
    void* retvalue = calloc(max(x,1),max(y,1)); 
    #endif

    if(retvalue==NULL)
    {
        fprintf(stderr, "ERROR, calloc returned null pointer, that means we probably ran out of memory...\n");
        exit(1);
    }

    return retvalue;
};

#define Malloc(x) MallocWithCheck(x)
#define Calloc(x,y) CallocWithCheck(x,y)
#define Free(x) free(x)

#else

    #ifdef ALLOW_ALLOC_ZERO_BYTES
    #define Malloc(x) malloc(x)
    #define Calloc(x,y) calloc(x,y)
    #define Free(x) free(x)

    #else

    #define Malloc(x) malloc(max(x,1))
    #define Calloc(x,y) calloc(max(x,1),max(y,1))
    #define Free(x) free(x)

    #endif // ALLOW_ALLOC_ZERO_BYTES
#endif // MEMORY_DEBUG

#endif