hop-2012/experiments/cmsg/node.h

61 lines
2.1 KiB
C

/* Copyright 2010, 2011, 2012 Tony Garnock-Jones <tonygarnockjones@gmail.com>.
*
* This file is part of Hop.
*
* Hop is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Hop is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Hop. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef cmsg_node_h
#define cmsg_node_h
typedef struct node_t_ {
refcount_t refcount;
struct node_class_t_ *node_class;
hashtable_t names;
void *extension; /* Each node class puts something different here in its instances */
} node_t;
typedef sexp_t *(*node_extension_fn_t)(node_t *n, sexp_t *args);
typedef void (*node_destructor_fn_t)(node_t *n);
typedef void (*node_message_handler_fn_t)(node_t *n, sexp_t *m);
typedef struct node_class_t_ {
char const *name;
node_extension_fn_t extend;
node_destructor_fn_t destroy;
node_message_handler_fn_t handle_message;
} node_class_t;
extern void init_node(cmsg_bytes_t container_name);
extern cmsg_bytes_t local_container_name(void);
extern void basic_node_destroy(node_t *n);
extern void register_node_class(node_class_t *nc);
extern node_class_t *lookup_node_class(cmsg_bytes_t name);
extern node_t *new_node(node_class_t *nc, sexp_t *args, sexp_t **error_out);
extern void node_destructor(node_t *n);
extern node_t *lookup_node(cmsg_bytes_t name);
extern int bind_node(cmsg_bytes_t name, node_t *n);
extern int unbind_node(cmsg_bytes_t name);
extern void unbind_all_names_for_node(node_t *n);
extern int post_node(cmsg_bytes_t node, cmsg_bytes_t name, sexp_t *body, sexp_t *token);
extern int send_node(cmsg_bytes_t node, sexp_t *message);
extern int send_node_release(cmsg_bytes_t node, sexp_t *message);
#endif