/*
* Check if session daemon is alive.
*
* Return 1 if alive or 0 if not.
* On error returns a negative value.
*/
int lttng_session_daemon_alive(void)
{
int ret;
ret = set_session_daemon_path();
if (ret < 0) {
/* Error */
return ret;
}
if (*sessiond_sock_path == '\0') {
/*
* No socket path set. Weird error which means the constructor was not
* called.
*/
assert(0);
}
ret = try_connect_sessiond(sessiond_sock_path);
if (ret < 0) {
/* Not alive */
return 0;
}
/* Is alive */
return 1;
}
/*
* Connect to the LTTng session daemon.
*
* On success, return 0. On error, return -1.
*/
static int connect_sessiond(void)
{
int ret;
/* Don't try to connect if already connected. */
if (connected) {
return 0;
}
ret = set_session_daemon_path();
if (ret < 0) {
goto error;
}
/* Connect to the sesssion daemon */
ret = lttcomm_connect_unix_sock(sessiond_sock_path);
if (ret < 0) {
goto error;
}
sessiond_socket = ret;
connected = 1;
return 0;
error:
return -1;
}
/*
* Connect to the LTTng session daemon.
*
* On success, return 0. On error, return -1.
*/
static int connect_sessiond(void)
{
int ret;
ret = set_session_daemon_path();
if (ret < 0) {
goto error;
}
/* Connect to the sesssion daemon */
ret = lttcomm_connect_unix_sock(sessiond_sock_path);
if (ret < 0) {
goto error;
}
sessiond_socket = ret;
connected = 1;
return 0;
error:
return -1;
}
