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