struct ustcomm_ust_reply lur;
int shm_fd, wait_fd;
union ust_args args;
+ ssize_t len;
ust_lock();
goto error;
}
}
+ /*
+ * LTTNG_UST_TRACEPOINT_FIELD_LIST_GET needs to send the field
+ * after the reply.
+ */
+ if (lur.ret_code == USTCOMM_OK) {
+ switch (lum->cmd) {
+ case LTTNG_UST_TRACEPOINT_FIELD_LIST_GET:
+ len = ustcomm_send_unix_sock(sock,
+ &args.field_list.entry,
+ sizeof(args.field_list.entry));
+ if (len != sizeof(args.field_list.entry)) {
+ ret = -1;
+ goto error;
+ }
+ }
+ }
/*
* We still have the memory map reference, and the fds have been
* sent to the sessiond. We can therefore close those fds. Note
void __attribute__((constructor)) lttng_ust_init(void)
{
struct timespec constructor_timeout;
+ sigset_t sig_all_blocked, orig_parent_mask;
int timeout_mode;
int ret;
if (ret) {
ERR("Error setting up to local apps");
}
+
+ /* A new thread created by pthread_create inherits the signal mask
+ * from the parent. To avoid any signal being received by the
+ * listener thread, we block all signals temporarily in the parent,
+ * while we create the listener thread.
+ */
+ sigfillset(&sig_all_blocked);
+ ret = pthread_sigmask(SIG_SETMASK, &sig_all_blocked, &orig_parent_mask);
+ if (ret) {
+ PERROR("pthread_sigmask: %s", strerror(ret));
+ }
+
ret = pthread_create(&local_apps.ust_listener, NULL,
ust_listener_thread, &local_apps);
handle_register_done(&local_apps);
}
+ /* Restore original signal mask in parent */
+ ret = pthread_sigmask(SIG_SETMASK, &orig_parent_mask, NULL);
+ if (ret) {
+ PERROR("pthread_sigmask: %s", strerror(ret));
+ }
+
switch (timeout_mode) {
case 1: /* timeout wait */
do {