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 void lttng_print_event_type(struct seq_file *m, unsigned int indent,
  32                             const struct lttng_type *type);
  33
  34 #endif /* _LTTNG_PROBES_LTTNG_TYPES_H */
  35
  36
  37 /* Export enumerations */
  38
  39 #ifdef STAGE_EXPORT_ENUMS
  40
  41 #undef TRACE_EVENT_TYPE
  42 #define TRACE_EVENT_TYPE(_name, _abstract_type, args...)
  43
  44 #undef TRACE_EVENT_ENUM
  45 #define TRACE_EVENT_ENUM(_name, _entries...)                            \
  46         const struct lttng_enum_entry __trace_event_enum_##_name[] = {  \
  47                 PARAMS(_entries)                                        \
  48         };
  49
  50 /* Enumeration entry (single value) */
  51 #undef V
  52 #define V(_string)              { _string, _string, #_string}
  53
  54 /* Enumeration entry (range) */
  55 #undef R
  56 #define R(_string, _range_start, _range_end)                            \
  57         { _range_start, _range_end, #_string }
  58
  59 #endif /* STAGE_EXPORT_ENUMS */
  60
  61
  62 /* Export named types */
  63
  64 #ifdef STAGE_EXPORT_TYPES
  65
  66 #undef TRACE_EVENT_TYPE___integer_ext
  67 #define TRACE_EVENT_TYPE___integer_ext(_name, _byte_order)      \
  68                 {                                               \
  69                   .atype = atype_integer,                       \
  70                   .name = #_name,                               \
  71                   .u.integer.size = sizeof(_name) * 8,          \
  72                   .u.integer.alignment = __alignof__(_name) * 8,\
  73                   .u.integer.signedness = is_signed_type(_name),\
  74                   .u.integer.reverse_byte_order = ((_byte_order) != __BYTE_ORDER),\
  75                 },
  76
  77 #undef TRACE_EVENT_TYPE___integer
  78 #define TRACE_EVENT_TYPE___integer(_name, _unused)              \
  79                 TRACE_EVENT_TYPE___integer_ext(_name, __BYTE_ORDER)
  80
  81 #undef TRACE_EVENT_TYPE___enum
  82 #define TRACE_EVENT_TYPE___enum(_name, _parent_type)            \
  83                 {                                               \
  84                   .atype = atype_enum,                          \
  85                   .name = #_name,                               \
  86                   .u.enumeration.parent_type = #_parent_type,   \
  87                   .u.enumeration.def.entries = __trace_event_enum_##_name, \
  88                   .u.enumeration.def.len = ARRAY_SIZE(__trace_event_enum_##_name), \
  89                 },
  90
  91 #undef TRACE_EVENT_TYPE___array
  92 #define TRACE_EVENT_TYPE___array(_name, _elem_type, _length)    \
  93                 {                                               \
  94                   .atype = atype_array,                         \
  95                   .name = #_name,                               \
  96                   .u.array.elem_type = #_elem_type,             \
  97                   .u.array.length = _length,                    \
  98                 },
  99
 100 #undef TRACE_EVENT_TYPE___sequence
 101 #define TRACE_EVENT_TYPE___sequence(_name, _elem_type, _length_type)    \
 102                 {                                               \
 103                   .atype = atype_sequence,                      \
 104                   .name = #_name,                               \
 105                   .u.sequence.elem_type = #_elem_type,          \
 106                   .u.sequence.length_type = #_length_type,      \
 107                 },
 108
 109 #undef TRACE_EVENT_TYPE___string
 110 #define TRACE_EVENT_TYPE___string(_name, _encoding)             \
 111                 {                                               \
 112                   .atype = atype_string,                        \
 113                   .name = #_name,                               \
 114                   .u.string.encoding = lttng_encode_##_encoding,\
 115                 },
 116
 117
 118 /* Local declaration */
 119 #undef TRACE_EVENT_TYPE
 120 #define TRACE_EVENT_TYPE(_name, _abstract_type, args...)        \
 121                 TRACE_EVENT_TYPE___##_abstract_type(_name, args)
 122
 123 #undef TRACE_EVENT_ENUM
 124 #define TRACE_EVENT_ENUM(_name, _entries...)
 125
 126 #endif /* STAGE_EXPORT_TYPES */