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:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 */

#ifndef UCX_ALLOCATOR_H
#define UCX_ALLOCATOR_H

#include <stdlib.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef struct {
    void *(*malloc)(void *data, size_t n);
    void *(*realloc)(void *data, void *mem, size_t n);
    void *(*calloc)(void *data, size_t nelem, size_t n);
    void(*free)(void *data, void *mem);
} cx_allocator_class;

extern cx_allocator_class cx_default_allocator_class;

struct cx_allocator_s {
    cx_allocator_class *cl;
    void *data;
};
typedef struct cx_allocator_s *CxAllocator;

extern CxAllocator cxDefaultAllocator;

void *cxMalloc(CxAllocator allocator, size_t n);

void *cxRealloc(CxAllocator allocator, void *mem, size_t n);

int cxReallocate(CxAllocator allocator, void **mem, size_t n);

void *cxCalloc(CxAllocator allocator, size_t nelem, size_t n);

void cxFree(CxAllocator allocator, void *mem);

#ifdef __cplusplus
} /* extern "C" */
#endif

#endif /* UCX_ALLOCATOR_H */