src/cx/allocator.h

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 *   2. Redistributions in binary form must reproduce the above copyright
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 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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#ifndef UCX_ALLOCATOR_H
#define UCX_ALLOCATOR_H

#include <stdlib.h>

typedef void* cx_allocator;
typedef void*(*cx_malloc_func)(cx_allocator a, size_t n);
typedef void*(*cx_realloc_func)(cx_allocator a, void* mem, size_t n);
typedef void*(*cx_calloc_func)(cx_allocator a, size_t nelem, size_t n);
typedef void(*cx_free_func)(cx_allocator a, void* mem);

void* cx_malloc_stdlib(cx_allocator a, size_t n);
void* cx_realloc_stdlib(cx_allocator a, void* mem, size_t n);
void* cx_calloc_stdlib(cx_allocator a, size_t nelem, size_t n);
void cx_free_stdlib(cx_allocator a, void* mem);

struct cx_allocator_s {
    cx_malloc_func malloc;
    cx_realloc_func realloc;
    cx_calloc_func calloc;
    cx_free_func free;
    void* data;
};
typedef struct cx_allocator_s* CxAllocator;

extern CxAllocator cxDefaultAllocator;

#define cxMalloc(a, n) (a)->malloc((a), n)
#define cxRealloc(a, mem, n) (a)->realloc((a), mem, n)
#define cxCalloc(a, nelem, n) (a)->calloc((a), nelem, n)
#define cxFree(a, mem) (a)->free((a), mem)

#endif //UCX_ALLOCATOR_H