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#ifndef APOS_MEM_REGIONS_H
#define APOS_MEM_REGIONS_H
#include <apos/mem.h>
#include <apos/types.h>
#include <apos/sp_tree.h>
#include <arch/vmem.h>
#define mem_container(ptr)\
container_of(ptr, struct sp_mem, sp_n)
struct sp_reg_root {
struct sp_root free_regions;
struct sp_root used_regions;
};
struct sp_mem {
struct sp_node sp_n;
struct sp_mem *next;
struct sp_mem *prev;
char flags;
vm_t end;
vm_t start;
};
stat_t sp_mem_init(struct sp_reg_root *r, vm_t start, size_t arena_size);
vm_t alloc_region(struct sp_reg_root *r, size_t size, size_t *actual_size);
vm_t alloc_fixed_region(struct sp_reg_root *r, vm_t start, size_t size, size_t *actual_size);
stat_t free_region(struct sp_reg_root *r, vm_t start);
struct sp_mem *sp_used_find(struct sp_reg_root *r, vm_t start);
struct sp_mem *sp_find_used_closest(struct sp_reg_root *r, vm_t start);
struct sp_mem *sp_find_free(struct sp_reg_root *r, size_t size, size_t *align);
#define MEM_REGION_TRY_AGAIN 1
typedef stat_t mem_region_callback_t(struct vm_branch *b,
pm_t *offset, vm_t vaddr, vmflags_t flags, enum mm_order order);
vm_t map_fill_region(struct vm_branch *b, mem_region_callback_t *mem_handler,
pm_t offset, vm_t start, size_t bytes, vmflags_t flags);
#endif /* APOS_MEM_REGIONS_H */
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