probes/lttng-types.h

   1 /*
   2  * Protect against multiple inclusion of structure declarations, but run the
   3  * stages below each time.
   4  */
   5 #ifndef _LTTNG_PROBES_LTTNG_TYPES_H
   6 #define _LTTNG_PROBES_LTTNG_TYPES_H
   7
   8 #include <linux/seq_file.h>
   9 #include "lttng.h"
  10 #include "../ltt-events.h"
  11 #include "../ltt-tracer.h"
  12
  13 #ifdef __KERNEL__
  14 # include <asm/byteorder.h>
  15 # ifdef __BIG_ENDIAN
  16 #  define __BYTE_ORDER __BIG_ENDIAN
  17 # elif defined(__LITTLE_ENDIAN)
  18 #  define __BYTE_ORDER __LITTLE_ENDIAN
  19 # else
  20 #  error "unknown endianness"
  21 # endif
  22 #ifndef __BIG_ENDIAN
  23 # define __BIG_ENDIAN 4321
  24 #endif
  25 #ifndef __LITTLE_ENDIAN
  26 # define __LITTLE_ENDIAN 1234
  27 #endif
  28 #else
  29 # include <endian.h>
  30 #endif
  31
  32 #endif /* _LTTNG_PROBES_LTTNG_TYPES_H */
  33
  34
  35 /* Export enumerations */
  36
  37 #ifdef STAGE_EXPORT_ENUMS
  38
  39 #undef TRACE_EVENT_TYPE
  40 #define TRACE_EVENT_TYPE(_name, _abstract_type, args...)
  41
  42 #undef TRACE_EVENT_ENUM
  43 #define TRACE_EVENT_ENUM(_name, _entries...)                            \
  44         const struct lttng_enum_entry __trace_event_enum_##_name[] = {  \
  45                 PARAMS(_entries)                                        \
  46         };
  47
  48 /* Enumeration entry (single value) */
  49 #undef V
  50 #define V(_string)              { _string, _string, #_string}
  51
  52 /* Enumeration entry (range) */
  53 #undef R
  54 #define R(_string, _range_start, _range_end)                            \
  55         { _range_start, _range_end, #_string }
  56
  57 #endif /* STAGE_EXPORT_ENUMS */
  58
  59
  60 /* Export named types */
  61
  62 #ifdef STAGE_EXPORT_TYPES
  63
  64 #undef TRACE_EVENT_TYPE___enum
  65 #define TRACE_EVENT_TYPE___enum(_name, _container_type)                 \
  66                 {                                                       \
  67                   .name = #_name,                                       \
  68                   .container_type = __type_integer(_container_type, __BYTE_ORDER), \
  69                   .entries = __trace_event_enum_##_name, \
  70                   .len = ARRAY_SIZE(__trace_event_enum_##_name), \
  71                 },
  72
  73 /* Local declaration */
  74 #undef TRACE_EVENT_TYPE
  75 #define TRACE_EVENT_TYPE(_name, _abstract_type, args...)        \
  76                 TRACE_EVENT_TYPE___##_abstract_type(_name, args)
  77
  78 #undef TRACE_EVENT_ENUM
  79 #define TRACE_EVENT_ENUM(_name, _entries...)
  80
  81 #endif /* STAGE_EXPORT_TYPES */