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// Copyright(c) 2020, Intel Corporation
//
// Redistribution  and  use  in source  and  binary  forms,  with  or  without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of  source code  must retain the  above copyright notice,
//   this list of conditions and the following disclaimer.
// * 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.
// * Neither the name  of Intel Corporation  nor the names of its contributors
//   may be used to  endorse or promote  products derived  from this  software
//   without specific prior written permission.
//
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,  BUT NOT LIMITED TO,  THE
// IMPLIED WARRANTIES OF  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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#ifndef __OPAE_MEM_ALLOC_H__
#define __OPAE_MEM_ALLOC_H__

#include <stdint.h>

struct mem_link {
    uint64_t address;
    uint64_t size;
    struct mem_link *prev;
    struct mem_link *next;
};

struct mem_alloc {
    struct mem_link free;
    struct mem_link allocated;
};

#ifdef __cplusplus
extern "C" {
#endif // __cplusplus

void mem_alloc_init(struct mem_alloc *m);

void mem_alloc_destroy(struct mem_alloc *m);

int mem_alloc_add_free(struct mem_alloc *m,
               uint64_t address,
               uint64_t size);

int mem_alloc_get(struct mem_alloc *m,
          uint64_t *address,
          uint64_t size);

int mem_alloc_put(struct mem_alloc *m,
          uint64_t address);

#ifdef __cplusplus
}
#endif // __cplusplus

#endif // __OPAE_MEM_ALLOC_H__