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#ifndef APOS_NODES_H
#define APOS_NODES_H
/**
* @file nodes.h
* Node subsystem. Used by a number of subsystems for allocating specific sizes
* of memory nodes smaller than memory pages.
*/
#include <apos/types.h>
enum node_status { FREE = 0, USED = 1 };
struct node_region {
size_t used_nodes;
struct node_region *av_next;
struct node_region *av_prev;
struct node_region *next;
struct node_region *prev;
};
struct node_root {
size_t node_size;
size_t max_nodes;
ptrdiff_t bitmap;
ptrdiff_t first_node;
struct node_region *head;
struct node_region *av_head;
};
void init_nodes(struct node_root *r, size_t node_size);
void destroy_nodes(struct node_root *r);
void *get_node(struct node_root *r);
void free_node(struct node_root *r, void *p);
#endif /* APOS_NODES_H */
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