lttng_chan_buf->ops->event_write(ctx, &sel_char, sizeof(sel_char));
if (str) {
lttng_chan_buf->ops->event_write(ctx, str, strlen(str) + 1);
lttng_chan_buf->ops->event_write(ctx, &sel_char, sizeof(sel_char));
if (str) {
lttng_chan_buf->ops->event_write(ctx, str, strlen(str) + 1);