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/*
* Copyright (C) 2025 Johnny Richard <johnny@johnnyrichard.com>
*
* SPDX-License-Identifier: LGPL-3.0-or-later
*
* This file is part of obe.
*
* obe is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option)
* any later version.
*
* obe 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with obe. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef OBE_ARENA_H
#define OBE_ARENA_H
#include <stddef.h>
#include <stdint.h>
#define OBE_ARENA_ALIGMENT_BYTES (16)
#define OBE_ARENA_ALIGMENT_MASK (OBE_ARENA_ALIGMENT_BYTES - 1)
#define OBE_ARENA_REGION_DEFAULT_CAPACITY (8 * 1024)
#define OBE_ARENA_PADDING(bytes) \
((uint8_t)((OBE_ARENA_ALIGMENT_BYTES - bytes) & OBE_ARENA_ALIGMENT_MASK))
typedef struct obe_arena_region obe_arena_region_t;
struct obe_arena_region
{
obe_arena_region_t* next;
size_t offset;
size_t capacity;
uint8_t* data;
};
typedef struct obe_arena
{
obe_arena_region_t* begin;
obe_arena_region_t* end;
} obe_arena_t;
/* arena */
void*
obe_arena_alloc(obe_arena_t* arena, size_t size);
void*
obe_arena_realloc(obe_arena_t* arena,
void* old_ptr,
size_t old_size,
size_t new_size);
void
obe_arena_release(obe_arena_t* arena);
void
obe_arena_free(obe_arena_t* arena);
/* region */
obe_arena_region_t*
obe_arena_region_new(size_t capacity);
void
obe_arena_region_free(obe_arena_region_t* r);
char*
obe_arena_strdup(obe_arena_t* arena, char* s);
#endif /* OBE_ARENA_H */
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