1 /**************************************************************************/
2 /* ---------------------------------------------------------------------- */
3 /* Copyright (C) 2006 - 2008 FRESCOR consortium partners: */
5 /* Universidad de Cantabria, SPAIN */
6 /* University of York, UK */
7 /* Scuola Superiore Sant'Anna, ITALY */
8 /* Kaiserslautern University, GERMANY */
9 /* Univ. Politécnica Valencia, SPAIN */
10 /* Czech Technical University in Prague, CZECH REPUBLIC */
12 /* Thales Communication S.A. FRANCE */
13 /* Visual Tools S.A. SPAIN */
14 /* Rapita Systems Ltd UK */
17 /* See http://www.frescor.org for a link to partners' websites */
19 /* FRESCOR project (FP6/2005/IST/5-034026) is funded */
20 /* in part by the European Union Sixth Framework Programme */
21 /* The European Union is not liable of any use that may be */
22 /* made of this code. */
25 /* This file is part of FORB (Frescor Object Request Broker) */
27 /* FORB is free software; you can redistribute it and/or modify it */
28 /* under terms of the GNU General Public License as published by the */
29 /* Free Software Foundation; either version 2, or (at your option) any */
30 /* later version. FORB is distributed in the hope that it will be */
31 /* useful, but WITHOUT ANY WARRANTY; without even the implied warranty */
32 /* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */
33 /* General Public License for more details. You should have received a */
34 /* copy of the GNU General Public License along with FORB; see file */
35 /* COPYING. If not, write to the Free Software Foundation, 675 Mass Ave, */
36 /* Cambridge, MA 02139, USA. */
38 /* As a special exception, including FORB header files in a file, */
39 /* instantiating FORB generics or templates, or linking other files */
40 /* with FORB objects to produce an executable application, does not */
41 /* by itself cause the resulting executable application to be covered */
42 /* by the GNU General Public License. This exception does not */
43 /* however invalidate any other reasons why the executable file might be */
44 /* covered by the GNU Public License. */
45 /**************************************************************************/
49 * @author Michal Sojka <sojkam1@fel.cvut.cz>
50 * @date Sun Oct 12 17:30:27 2008
52 * @brief Implementation of peer manipulation functions.
58 #include "forb_utils.h"
61 GAVL_CUST_NODE_INT_IMP(forb_peer_nolock,/* cust_prefix */
62 forb_t, /* cust_root_t */
63 forb_peer_t, /* cust_item_t */
64 forb_server_id, /* cust_key_t */
65 peers, /* cust_root_node */
66 gnode, /* cust_item_node */
67 server_id, /* cust_item_key */
68 forb_server_id_cmp);/* cust_cmp_fnc */
77 peer = forb_malloc(sizeof(*peer));
79 memset(peer, 0, sizeof(*peer));
80 fosa_cond_init(&peer->cond);
81 forb_ref_init(&peer->ref);
82 fosa_mutex_init(&peer->send_lock, 0);
88 forb_peer_release(forb_ref_t *ref)
90 forb_peer_t *peer = container_of(ref, forb_peer_t, ref);
92 peer->port->desc.proto->peer_destroy) {
93 peer->port->desc.proto->peer_destroy(peer);
96 forb_free(peer->addr);
102 forb_peer_delete_by_port(forb_t *forb, forb_port_t *port)
105 ul_list_for_each_cut(forb_port_peer, port, peer) {
106 forb_peer_delete(forb, peer);
112 * Finds the peer with given @a server_id. If the peer is not
113 * currently known (not yet discovered or not available), this
114 * function waits at maximum @a timeout for the peer to be discovered.
120 * @return The peer structure or NULL if the peer is not known even
121 * after the timeout elapses.
123 * @note After the returned peer is not needed, forb_peer_put() must
127 forb_peer_find_timed(forb_t *forb, forb_server_id *server_id,
128 fosa_abs_time_t *timeout)
131 bool peer_allocated = false;
133 fosa_mutex_lock(&forb->peer_mutex);
134 peer = forb_peer_nolock_find(forb, server_id);
135 if (!peer && !timeout) goto unlock;
139 /* We are the first who want to contact this peer */
140 peer = forb_peer_new();
141 if (!peer) goto unlock;
142 peer->server_id = *server_id;
143 peer->state = FORB_PEER_WANTED;
144 forb_peer_nolock_insert(forb, forb_peer_get(peer));
145 peer_allocated = true;
147 while (peer->state == FORB_PEER_WANTED) {
149 /* Wait for the peer to be discovered. */
150 ret = fosa_cond_timedwait(&peer->cond,
153 if (ret == FOSA_ETIMEDOUT) {
154 /* No peer discovered within timeout */
155 if (peer_allocated) {
156 forb_peer_nolock_delete(forb, peer);
165 fosa_mutex_unlock(&forb->peer_mutex);