Fix: relayd connection object refactor

[lttng-tools.git] / src / bin / lttng-relayd / connection.c

diff --git a/src/bin/lttng-relayd/connection.c b/src/bin/lttng-relayd/connection.c
new file mode 100644 (file)
index 0000000..4dc41e0
--- /dev/null
+++ b/src/bin/lttng-relayd/connection.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2013 - Julien Desfossez <jdesfossez@efficios.com>
+ *                      David Goulet <dgoulet@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License, version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This program 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
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#define _GNU_SOURCE
+#include <common/common.h>
+
+#include "connection.h"
+#include "stream.h"
+
+static void rcu_free_connection(struct rcu_head *head)
+{
+       struct relay_connection *conn =
+               caa_container_of(head, struct relay_connection, rcu_node);
+
+       lttcomm_destroy_sock(conn->sock);
+       free(conn);
+}
+
+struct relay_connection *connection_find_by_sock(struct lttng_ht *ht, int sock)
+{
+       struct lttng_ht_node_ulong *node;
+       struct lttng_ht_iter iter;
+       struct relay_connection *conn = NULL;
+
+       assert(ht);
+       assert(sock >= 0);
+
+       lttng_ht_lookup(ht, (void *)((unsigned long) sock), &iter);
+       node = lttng_ht_iter_get_node_ulong(&iter);
+       if (!node) {
+               DBG2("Relay connection by sock %d not found", sock);
+               goto end;
+       }
+       conn = caa_container_of(node, struct relay_connection, sock_n);
+
+end:
+       return conn;
+}
+
+void connection_delete(struct lttng_ht *ht, struct relay_connection *conn)
+{
+       int ret;
+       struct lttng_ht_iter iter;
+
+       assert(ht);
+       assert(conn);
+
+       iter.iter.node = &conn->sock_n.node;
+       ret = lttng_ht_del(ht, &iter);
+       assert(!ret);
+}
+
+void connection_destroy(struct relay_connection *conn)
+{
+       struct relay_stream *stream, *tmp_stream;
+
+       assert(conn);
+
+       /* Clean up recv list of this connection if any. */
+       cds_list_for_each_entry_safe(stream, tmp_stream, &conn->recv_head,
+                       recv_list) {
+               cds_list_del(&stream->recv_list);
+       }
+
+       call_rcu(&conn->rcu_node, rcu_free_connection);
+}
+
+struct relay_connection *connection_create(void)
+{
+       struct relay_connection *conn;
+
+       conn = zmalloc(sizeof(*conn));
+       if (!conn) {
+               PERROR("zmalloc relay connection");
+               goto error;
+       }
+
+error:
+       return conn;
+}
+
+void connection_init(struct relay_connection *conn)
+{
+       assert(conn);
+       assert(conn->sock);
+
+       CDS_INIT_LIST_HEAD(&conn->recv_head);
+       lttng_ht_node_init_ulong(&conn->sock_n, (unsigned long) conn->sock->fd);
+}
+
+void connection_free(struct relay_connection *conn)
+{
+       assert(conn);
+
+       free(conn);
+}