amalloc.h

/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * 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.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _TD_AMALLOC_H_
#define _TD_AMALLOC_H_

#include "os.h"

#ifdef __cplusplus
extern "C" {
#endif

// Interfaces to implement
typedef struct {
  void *(*malloc)(void *, size_t size);
  void *(*calloc)(void *, size_t nmemb, size_t size);
  void (*free)(void *ptr, size_t size); // Do we need to set size in the allocated memory?
  void *(*realloc)(void *ptr, size_t size);
} SMemAllocatorIf;

typedef struct {
  void *          impl;
  SMemAllocatorIf interface;
} SMemAllocator;

#define amalloc(allocator, size) \
  ((allocator) ? (*((allocator)->interface.malloc))((allocator)->impl, (size)) : malloc(size))
#define acalloc(allocator, nmemb, size) \
  ((allocator) ? (*((allocator)->interface.calloc))((allocator)->impl, (nmemb), (size)) : calloc((nmemb), (size)))
#define arealloc(allocator, ptr, size) \
  ((allocator) ? (*((allocator)->interface.realloc))((allocator)->impl, (ptr), (size)) : realloc((ptr), (size)))
#define afree(allocator, ptr, size) \
  ((allocator) ? (*((allocator)->interface.free))((allocator)->impl, (ptr), (size)) : free(ptr))

#ifdef __cplusplus
}
#endif

#endif /*_TD_AMALLOC_H_*/