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diff --git a/src/frontend/sock.c b/src/frontend/sock.c
index d157853bb64bc4b7489af9beb8c12dff5ab0e853..414c90775657294c0408ffb1e8c1eaea78ae8f0d 100644 (file)
--- a/src/frontend/sock.c
+++ b/src/frontend/sock.c
if (listener->sock_fd >= 0)
close(listener->sock_fd);
+ listener->sock_fd = -1;
if (listener->address)
free(listener->address);
return listener;
} /* listener_create */
+static int
+listener_listen(listener_t *listener)
+{
+ assert(listener);
+
+ /* try to reopen */
+ if (listener->sock_fd < 0)
+ if (listener_impls[listener->type].opener(listener))
+ return -1;
+ assert(listener->sock_fd >= 0);
+
+ if (listen(listener->sock_fd, /* backlog = */ 32)) {
+ char buf[1024];
+ sdb_log(SDB_LOG_ERR, "frontend: Failed to listen on socket %s: %s",
+ listener->address, sdb_strerror(errno, buf, sizeof(buf)));
+ return -1;
+ }
+ return 0;
+} /* listener_listen */
+
+static void
+listener_close(listener_t *listener)
+{
+ assert(listener);
+
+ if (listener->sock_fd < 0)
+ return;
+
+ close(listener->sock_fd);
+ listener->sock_fd = -1;
+} /* listener_close */
+
+static void
+socket_close(sdb_fe_socket_t *sock)
+{
+ size_t i;
+
+ assert(sock);
+ for (i = 0; i < sock->listeners_num; ++i)
+ listener_close(sock->listeners + i);
+} /* socket_close */
+
/*
* private data types
*/
status = connection_read(conn->conn.fd);
if (status <= 0) {
- /* error or EOF → close connection */
+ /* error or EOF -> close connection */
sdb_object_deref(SDB_OBJ(conn));
}
else {
return 0;
} /* connection_accept */
+static int
+socket_handle_incoming(sdb_fe_socket_t *sock,
+ fd_set *ready, fd_set *exceptions)
+{
+ sdb_llist_iter_t *iter;
+ size_t i;
+
+ for (i = 0; i < sock->listeners_num; ++i) {
+ listener_t *listener = sock->listeners + i;
+ if (FD_ISSET(listener->sock_fd, ready))
+ if (connection_accept(sock, listener))
+ continue;
+ }
+
+ iter = sdb_llist_get_iter(sock->open_connections);
+ if (! iter) {
+ sdb_log(SDB_LOG_ERR, "frontend: Failed to acquire iterator "
+ "for open connections");
+ return -1;
+ }
+
+ while (sdb_llist_iter_has_next(iter)) {
+ sdb_object_t *obj = sdb_llist_iter_get_next(iter);
+
+ if (FD_ISSET(CONN(obj)->conn.fd, exceptions))
+ sdb_log(SDB_LOG_INFO, "Exception on fd %d",
+ CONN(obj)->conn.fd);
+
+ if (FD_ISSET(CONN(obj)->conn.fd, ready)) {
+ sdb_llist_iter_remove_current(iter);
+ sdb_channel_write(sock->chan, &obj);
+ }
+ }
+ sdb_llist_iter_destroy(iter);
+ return 0;
+} /* socket_handle_incoming */
+
/*
* public API
*/
/* XXX: make the number of threads configurable */
pthread_t handler_threads[5];
- if ((! sock) || (! sock->listeners_num) || (! loop))
+ if ((! sock) || (! sock->listeners_num) || (! loop) || sock->chan)
return -1;
FD_ZERO(&sockets);
-
for (i = 0; i < sock->listeners_num; ++i) {
listener_t *listener = sock->listeners + i;
- if (listen(listener->sock_fd, /* backlog = */ 32)) {
- char buf[1024];
- sdb_log(SDB_LOG_ERR, "frontend: Failed to listen on socket %s: %s",
- listener->address, sdb_strerror(errno, buf, sizeof(buf)));
+ if (listener_listen(listener)) {
+ socket_close(sock);
return -1;
}
}
sock->chan = sdb_channel_create(1024, sizeof(connection_obj_t *));
- if (! sock->chan)
+ if (! sock->chan) {
+ socket_close(sock);
return -1;
+ }
memset(&handler_threads, 0, sizeof(handler_threads));
/* XXX: error handling */
connection_handler, /* arg = */ sock);
while (loop->do_loop) {
+ struct timeval timeout = { 1, 0 }; /* one second */
+ sdb_llist_iter_t *iter;
+
+ int max_fd = max_listen_fd;
fd_set ready;
fd_set exceptions;
- int max_fd;
int n;
- struct timeval timeout = { 1, 0 }; /* one second */
- sdb_llist_iter_t *iter;
-
FD_ZERO(&ready);
FD_ZERO(&exceptions);
ready = sockets;
- max_fd = max_listen_fd;
-
iter = sdb_llist_get_iter(sock->open_connections);
if (! iter) {
sdb_log(SDB_LOG_ERR, "frontend: Failed to acquire iterator "
"for open connections");
- return -1;
+ break;
}
while (sdb_llist_iter_has_next(iter)) {
sdb_log(SDB_LOG_ERR, "frontend: Failed to monitor sockets: %s",
sdb_strerror(errno, buf, sizeof(buf)));
- return -1;
+ break;
}
-
- if (! n)
+ else if (! n)
continue;
- for (i = 0; i < sock->listeners_num; ++i) {
- listener_t *listener = sock->listeners + i;
- if (FD_ISSET(listener->sock_fd, &ready))
- if (connection_accept(sock, listener))
- continue;
- }
-
- iter = sdb_llist_get_iter(sock->open_connections);
- if (! iter) {
- sdb_log(SDB_LOG_ERR, "frontend: Failed to acquire iterator "
- "for open connections");
- return -1;
- }
-
- while (sdb_llist_iter_has_next(iter)) {
- sdb_object_t *obj = sdb_llist_iter_get_next(iter);
-
- if (FD_ISSET(CONN(obj)->conn.fd, &exceptions))
- sdb_log(SDB_LOG_INFO, "Exception on fd %d",
- CONN(obj)->conn.fd);
-
- if (FD_ISSET(CONN(obj)->conn.fd, &ready)) {
- sdb_llist_iter_remove_current(iter);
- sdb_channel_write(sock->chan, &obj);
- }
- }
- sdb_llist_iter_destroy(iter);
+ /* handle new and open connections */
+ if (socket_handle_incoming(sock, &ready, &exceptions))
+ break;
}
+ socket_close(sock);
+
sdb_log(SDB_LOG_INFO, "frontend: Waiting for connection handler threads "
"to terminate");
if (! sdb_channel_shutdown(sock->chan))
for (i = 0; i < SDB_STATIC_ARRAY_LEN(handler_threads); ++i)
pthread_join(handler_threads[i], NULL);
/* else: we tried our best; let the operating system clean up */
+
+ sdb_channel_destroy(sock->chan);
+ sock->chan = NULL;
return 0;
} /* sdb_fe_sock_listen_and_server */