| 1 | #ifndef _LTTNG_TRACER_H |
| 2 | #define _LTTNG_TRACER_H |
| 3 | |
| 4 | /* |
| 5 | * Copyright (C) 2005-2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 6 | * |
| 7 | * This contains the core definitions for the Linux Trace Toolkit. |
| 8 | * |
| 9 | * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED |
| 10 | * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. |
| 11 | * |
| 12 | * Permission is hereby granted to use or copy this program |
| 13 | * for any purpose, provided the above notices are retained on all copies. |
| 14 | * Permission to modify the code and to distribute modified code is granted, |
| 15 | * provided the above notices are retained, and a notice that the code was |
| 16 | * modified is included with the above copyright notice. |
| 17 | */ |
| 18 | |
| 19 | #include <lttng/config.h> |
| 20 | #include <lttng/ust-version.h> |
| 21 | |
| 22 | #ifndef HAVE_EFFICIENT_UNALIGNED_ACCESS |
| 23 | /* Align data on its natural alignment */ |
| 24 | #define RING_BUFFER_ALIGN |
| 25 | #endif |
| 26 | |
| 27 | #ifndef CHAR_BIT |
| 28 | #define CHAR_BIT 8 |
| 29 | #endif |
| 30 | |
| 31 | #ifdef RING_BUFFER_ALIGN |
| 32 | #define lttng_alignof(type) __alignof__(type) |
| 33 | #else |
| 34 | #define lttng_alignof(type) 1 |
| 35 | #endif |
| 36 | |
| 37 | #define lttng_is_signed_type(type) (((type)(-1)) < 0) |
| 38 | |
| 39 | #endif /* _LTTNG_TRACER_CORE_H */ |