Sessiond rotation thread

[lttng-tools.git] / src / bin / lttng-sessiond / rotation-thread.h

diff --git a/src/bin/lttng-sessiond/rotation-thread.h b/src/bin/lttng-sessiond/rotation-thread.h
new file mode 100644 (file)
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--- /dev/null
+++ b/src/bin/lttng-sessiond/rotation-thread.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2017 - Julien Desfossez <jdesfossez@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License, version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef ROTATION_THREAD_H
+#define ROTATION_THREAD_H
+
+#include <urcu/list.h>
+#include <urcu.h>
+#include <urcu/rculfhash.h>
+#include <lttng/domain.h>
+#include <common/pipe.h>
+#include <common/compat/poll.h>
+#include <common/hashtable/hashtable.h>
+#include <pthread.h>
+#include "session.h"
+
+struct rotation_thread_handle {
+       /*
+        * Read side of pipes used to communicate with the rotation thread.
+        */
+       /* Notification from the consumers */
+       int ust32_consumer;
+       int ust64_consumer;
+       int kernel_consumer;
+       /* quit pipe */
+       int thread_quit_pipe;
+};
+
+struct rotation_thread_handle *rotation_thread_handle_create(
+               struct lttng_pipe *ust32_channel_rotate_pipe,
+               struct lttng_pipe *ust64_channel_rotate_pipe,
+               struct lttng_pipe *kernel_channel_rotate_pipe,
+               int thread_quit_pipe);
+
+void rotation_thread_handle_destroy(
+               struct rotation_thread_handle *handle);
+
+void *thread_rotation(void *data);
+
+#endif /* ROTATION_THREAD_H */