Fix: ring buffer: RING_BUFFER_FLUSH ioctl buffer corruption

[lttng-modules.git] / lib / ringbuffer / frontend_internal.h

diff --git a/lib/ringbuffer/frontend_internal.h b/lib/ringbuffer/frontend_internal.h
index 281aafd7e4f2bb5227771e17cb7c779af723a460..bc284333f64c505e6e3fca646248073a8927f306 100644 (file)
--- a/lib/ringbuffer/frontend_internal.h
+++ b/lib/ringbuffer/frontend_internal.h
@@ -1,25 +1,37 @@
-#ifndef _LINUX_RING_BUFFER_FRONTEND_INTERNAL_H
-#define _LINUX_RING_BUFFER_FRONTEND_INTERNAL_H
+#ifndef _LIB_RING_BUFFER_FRONTEND_INTERNAL_H
+#define _LIB_RING_BUFFER_FRONTEND_INTERNAL_H
 
 /*
  * linux/ringbuffer/frontend_internal.h
  *
- * (C) Copyright 2005-2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
  * Ring Buffer Library Synchronization Header (internal helpers).
  *
+ * Copyright (C) 2005-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
  * Author:
  *     Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
  * See ring_buffer_frontend.c for more information on wait-free algorithms.
- *
- * Dual LGPL v2.1/GPL v2 license.
  */
 
 #include "../../wrapper/ringbuffer/config.h"
 #include "../../wrapper/ringbuffer/backend_types.h"
 #include "../../wrapper/ringbuffer/frontend_types.h"
-#include "../../wrapper/prio_heap.h"   /* For per-CPU read-side iterator */
+#include "../../lib/prio_heap/lttng_prio_heap.h"       /* For per-CPU read-side iterator */
 
 /* Buffer offset macros */
 
@@ -144,6 +156,9 @@ extern
 void lib_ring_buffer_switch_slow(struct lib_ring_buffer *buf,
                                 enum switch_mode mode);
 
+extern
+void lib_ring_buffer_switch_remote(struct lib_ring_buffer *buf);
+
 /* Buffer write helpers */
 
 static inline
@@ -421,4 +436,4 @@ extern void lib_ring_buffer_free(struct lib_ring_buffer *buf);
 /* Keep track of trap nesting inside ring buffer code */
 DECLARE_PER_CPU(unsigned int, lib_ring_buffer_nesting);
 
-#endif /* _LINUX_RING_BUFFER_FRONTEND_INTERNAL_H */
+#endif /* _LIB_RING_BUFFER_FRONTEND_INTERNAL_H */