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#pragma once
#include "common.h"
#define SMRT_ARENA_BASE_POS (sizeof(smrt_arena_t))
typedef struct {
u64 reserve_size;
u64 commit_size;
u64 mark_pos;
u64 pos;
u64 commit_pos;
b32 auto_decommit;
} smrt_arena_t;
smrt_arena_t * smrt_arena_create(u64 reserve_size, u64 commit_size, b32 auto_decommit);
void * smrt_arena_push(smrt_arena_t *arena, u64 alloc_amount, b32 zero_out);
void smrt_arena_pop(smrt_arena_t *arena, u64 pop_amount);
void smrt_arena_pop_to(smrt_arena_t *arena, u64 location);
void smrt_arena_clear(smrt_arena_t *arena, b32 zero_out);
void smrt_arena_destroy(smrt_arena_t *arena);
void smrt_arena_mark(smrt_arena_t *arena);
void * smrt_arena_mark_push(smrt_arena_t *arena, u64 alloc_amount, b32 zero_out);
i32 smrt_arena_pop_to_mark(smrt_arena_t *arena);
#define SMRTA_ALLOC_ARRAY(arena, T, n) (T*)smrt_arena_push(arena, sizeof(T) * (n), true)
#define QUICK_SCRATCH smrta_scratch_start(NULL, 0)
#define QUICK_SCRATCH_E(scratch) smrta_scratch_end(scratch)
typedef struct {
smrt_arena_t *arena;
u64 start_pos;
} smrta_temp_t;
smrta_temp_t smrta_temp_start(smrt_arena_t *arena);
void smrta_temp_end(smrta_temp_t temp);
smrta_temp_t smrta_scratch_start(smrt_arena_t **conflicts, u32 num_conflicts);
void smrta_scratch_end(smrta_temp_t temp);
#ifndef SCRATCH_POOL_SIZE
#define SCRATCH_POOL_SIZE 2
#endif
#ifndef SMRTA_SCRATCH_RESERVE_SIZE
#define SMRTA_SCRATCH_RESERVE_SIZE MiB(64)
#endif
#define TEMP_ARENA_PUSH(temp, T) (T*)smrt_arena_push(temp.arena, sizeof(T), true)
#define TEMP_ARENA_PUSH_ARRAY(temp, T, n) (T*)smrt_arena_push(temp.arena, sizeof(T) * (n), true)
u32 plat_get_pagesize(void);
void *plat_mem_reserve(u64 size);
b32 plat_mem_commit(void *ptr, u64 size);
b32 plat_mem_decommit(void *ptr, u64 size);
b32 plat_mem_release(void *ptr, u64 size);
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