avl.h

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#ifndef GRPC_SUPPORT_AVL_H
#define GRPC_SUPPORT_AVL_H

#include <grpc/support/sync.h>

typedef struct gpr_avl_node {
  gpr_refcount refs;
  void *key;
  void *value;
  struct gpr_avl_node *left;
  struct gpr_avl_node *right;
  long height;
} gpr_avl_node;

typedef struct gpr_avl_vtable {
  void (*destroy_key)(void *key);
  void *(*copy_key)(void *key);
  long (*compare_keys)(void *key1, void *key2);
  void (*destroy_value)(void *value);
  void *(*copy_value)(void *value);
} gpr_avl_vtable;

typedef struct gpr_avl {
  const gpr_avl_vtable *vtable;
  gpr_avl_node *root;
} gpr_avl;

GPRAPI gpr_avl gpr_avl_create(const gpr_avl_vtable *vtable);
GPRAPI gpr_avl gpr_avl_ref(gpr_avl avl);
GPRAPI void gpr_avl_unref(gpr_avl avl);
GPRAPI gpr_avl gpr_avl_add(gpr_avl avl, void *key, void *value);
GPRAPI gpr_avl gpr_avl_remove(gpr_avl avl, void *key);
GPRAPI void *gpr_avl_get(gpr_avl avl, void *key);
GPRAPI int gpr_avl_maybe_get(gpr_avl avl, void *key, void **value);
GPRAPI int gpr_avl_is_empty(gpr_avl avl);

#endif /* GRPC_SUPPORT_AVL_H */