47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
#ifndef INCLUDED_ARENA_H
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#define INCLUDED_ARENA_H
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#ifndef INCLUDED_OS_TYPES_H
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#include <os_types.h>
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#endif /*INCLUDED_OS_TYPES_H*/
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* https://www.gingerbill.org/article/2019/02/08/memory-allocation-strategies-002/ */
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typedef struct arena_t{
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uint8_t * buf;
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os_size_t buf_size;
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os_size_t prev_offset;
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os_size_t curr_offset;
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}arena_t;
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typedef struct arena_temp_memory_t {
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arena_t *arena;
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size_t prev_offset;
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size_t curr_offset;
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}arena_temp_memory_t;
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* */
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void arena_init(arena_t* self, uint8_t * buf, os_size_t buf_size);
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void* arena_alloc(arena_t* self, os_size_t size);
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void* arena_realloc(arena_t* self, void* old, os_size_t old_size, os_size_t new_size);
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// 不支持的操作
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//void arena_free(arena_t* self, void* ptr);
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void arean_destroy(arena_t* self);
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/* ------------------------------------------------------------------------------------------------------------------ */
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/* */
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arena_temp_memory_t arena_temp_memory_begin(arena_t *a);
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void arena_temp_memory_end(arena_temp_memory_t temp);
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#endif /*INCLUDED_ARENA_H*/
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