static bool shutdown_health_management_thread(void *data)
{
struct thread_notifiers *notifiers = data;
const int write_fd = lttng_pipe_get_writefd(notifiers->quit_pipe);
return notify_thread_pipe(write_fd) == 1;
}
/*
* Create kernel channel of the kernel session and notify kernel thread.
*/
int channel_kernel_create(struct ltt_kernel_session *ksession,
struct lttng_channel *attr, int kernel_pipe)
{
int ret;
struct lttng_channel *defattr = NULL;
assert(ksession);
/* Creating channel attributes if needed */
if (attr == NULL) {
defattr = channel_new_default_attr(LTTNG_DOMAIN_KERNEL,
LTTNG_BUFFER_GLOBAL);
if (defattr == NULL) {
ret = LTTNG_ERR_FATAL;
goto error;
}
attr = defattr;
}
/*
* Set the overwrite mode for this channel based on the session
* type unless the client explicitly overrides the channel mode.
*/
if (attr->attr.overwrite == DEFAULT_CHANNEL_OVERWRITE) {
attr->attr.overwrite = !!ksession->snapshot_mode;
}
/* Enforce mmap output for snapshot sessions. */
if (ksession->snapshot_mode) {
attr->attr.output = LTTNG_EVENT_MMAP;
}
/* Validate common channel properties. */
if (channel_validate(attr) < 0) {
ret = LTTNG_ERR_INVALID;
goto error;
}
if (channel_validate_kernel(attr) < 0) {
ret = LTTNG_ERR_INVALID;
goto error;
}
/* Channel not found, creating it */
ret = kernel_create_channel(ksession, attr);
if (ret < 0) {
ret = LTTNG_ERR_KERN_CHAN_FAIL;
goto error;
}
/* Notify kernel thread that there is a new channel */
ret = notify_thread_pipe(kernel_pipe);
if (ret < 0) {
ret = LTTNG_ERR_FATAL;
goto error;
}
ret = LTTNG_OK;
error:
channel_attr_destroy(defattr);
return ret;
}
int sessiond_notify_quit_pipe(void)
{
return notify_thread_pipe(thread_quit_pipe[1]);
}
