buffer_tree.h

   1
   2 struct btr_node;
   3 struct btr_pool;
   4
   5 typedef int (*btr_command_handler)(struct btr_node *btrn,
   6                 const char *command, char **result);
   7
   8 enum btr_node_type {
   9         BTR_NT_ROOT,
  10         BTR_NT_INTERNAL,
  11         BTR_NT_LEAF,
  12 };
  13
  14 struct btr_node_description {
  15         const char *name;
  16         struct btr_node *parent;
  17         btr_command_handler handler;
  18         void *context;
  19 };
  20
  21 size_t btr_pool_size(struct btr_pool *btrp);
  22 struct btr_pool *btr_pool_new(const char *name, size_t area_size);
  23 void btr_pool_free(struct btr_pool *btrp);
  24 size_t btr_pool_get_buffer(struct btr_pool *btrp, char **result);
  25 void btr_pool_allocate(struct btr_pool *btrp, size_t size);
  26 void btr_add_output_pool(struct btr_pool *btrp, size_t size,
  27         struct btr_node *btrn);
  28 size_t btr_pool_unused(struct btr_pool *btrp);
  29 void btr_copy(const void *src, size_t n, struct btr_pool *btrp,
  30         struct btr_node *btrn);
  31
  32 struct btr_node *btr_new_node(struct btr_node_description *bnd);
  33 void btr_remove_node(struct btr_node *btrn);
  34 void btr_free_node(struct btr_node *btrn);
  35 void btr_add_output(char *buf, size_t size, struct btr_node *btrn);
  36 bool btr_no_children(struct btr_node *btrn);
  37 size_t btr_bytes_pending(struct btr_node *btrn);
  38 size_t btr_get_input_queue_size(struct btr_node *btrn);
  39 bool btr_no_parent(struct btr_node *btrn);
  40 size_t btr_next_buffer(struct btr_node *btrn, char **bufp);
  41 void btr_consume(struct btr_node *btrn, size_t numbytes);
  42 int btr_exec(struct btr_node *btrn, const char *command, char **value_result);
  43 int btr_exec_up(struct btr_node *btrn, const char *command, char **value_result);
  44 void btr_splice_out_node(struct btr_node *btrn);
  45 void btr_pushdown(struct btr_node *btrn);
  46 void *btr_context(struct btr_node *btrn);
  47 void btr_merge(struct btr_node *btrn, size_t dest_size);
  48 bool btr_eof(struct btr_node *btrn);
  49 void btr_log_tree(struct btr_node *btrn, int loglevel);
  50 int btr_pushdown_one(struct btr_node *btrn);
  51 bool btr_inplace_ok(struct btr_node *btrn);
  52 int btr_node_status(struct btr_node *btrn, size_t min_iqs,
  53                 enum btr_node_type type);
  54 void btr_get_node_start(struct btr_node *btrn, struct timeval *tv);
  55 struct btr_node *btr_search_node(const char *name, struct btr_node *root);