include/side/trace.h

   1 // SPDX-License-Identifier: MIT
   2 /*
   3  * Copyright 2022 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  */
   5
   6 #ifndef _SIDE_TRACE_H
   7 #define _SIDE_TRACE_H
   8
   9 #include <stdint.h>
  10 #include <inttypes.h>
  11 #include <stdlib.h>
  12 #include <stdio.h>
  13 #include <math.h>
  14 #include <side/macros.h>
  15
  16 /* SIDE stands for "Static Instrumentation Dynamically Enabled" */
  17
  18 //TODO: as those structures will be ABI, we need to either consider them
  19 //fixed forever, or think of a scheme that would allow their binary
  20 //representation to be extended if need be.
  21
  22 struct side_arg_vec;
  23 struct side_arg_vec_description;
  24 struct side_arg_dynamic_vec;
  25 struct side_arg_dynamic_vec_vla;
  26 struct side_type_description;
  27 struct side_event_field;
  28 struct side_tracer_visitor_ctx;
  29 struct side_tracer_dynamic_struct_visitor_ctx;
  30 struct side_tracer_dynamic_vla_visitor_ctx;
  31
  32 enum side_type {
  33         SIDE_TYPE_BOOL,
  34
  35         SIDE_TYPE_U8,
  36         SIDE_TYPE_U16,
  37         SIDE_TYPE_U32,
  38         SIDE_TYPE_U64,
  39         SIDE_TYPE_S8,
  40         SIDE_TYPE_S16,
  41         SIDE_TYPE_S32,
  42         SIDE_TYPE_S64,
  43
  44         SIDE_TYPE_ENUM_U8,
  45         SIDE_TYPE_ENUM_U16,
  46         SIDE_TYPE_ENUM_U32,
  47         SIDE_TYPE_ENUM_U64,
  48         SIDE_TYPE_ENUM_S8,
  49         SIDE_TYPE_ENUM_S16,
  50         SIDE_TYPE_ENUM_S32,
  51         SIDE_TYPE_ENUM_S64,
  52
  53         SIDE_TYPE_ENUM_BITMAP8,
  54         SIDE_TYPE_ENUM_BITMAP16,
  55         SIDE_TYPE_ENUM_BITMAP32,
  56         SIDE_TYPE_ENUM_BITMAP64,
  57
  58         SIDE_TYPE_FLOAT_BINARY16,
  59         SIDE_TYPE_FLOAT_BINARY32,
  60         SIDE_TYPE_FLOAT_BINARY64,
  61         SIDE_TYPE_FLOAT_BINARY128,
  62
  63         SIDE_TYPE_STRING,
  64
  65         SIDE_TYPE_STRUCT,
  66         SIDE_TYPE_ARRAY,
  67         SIDE_TYPE_VLA,
  68         SIDE_TYPE_VLA_VISITOR,
  69
  70         SIDE_TYPE_ARRAY_U8,
  71         SIDE_TYPE_ARRAY_U16,
  72         SIDE_TYPE_ARRAY_U32,
  73         SIDE_TYPE_ARRAY_U64,
  74         SIDE_TYPE_ARRAY_S8,
  75         SIDE_TYPE_ARRAY_S16,
  76         SIDE_TYPE_ARRAY_S32,
  77         SIDE_TYPE_ARRAY_S64,
  78
  79         SIDE_TYPE_VLA_U8,
  80         SIDE_TYPE_VLA_U16,
  81         SIDE_TYPE_VLA_U32,
  82         SIDE_TYPE_VLA_U64,
  83         SIDE_TYPE_VLA_S8,
  84         SIDE_TYPE_VLA_S16,
  85         SIDE_TYPE_VLA_S32,
  86         SIDE_TYPE_VLA_S64,
  87
  88         SIDE_TYPE_DYNAMIC,
  89 };
  90
  91 enum side_dynamic_type {
  92         SIDE_DYNAMIC_TYPE_NULL,
  93
  94         SIDE_DYNAMIC_TYPE_BOOL,
  95
  96         SIDE_DYNAMIC_TYPE_U8,
  97         SIDE_DYNAMIC_TYPE_U16,
  98         SIDE_DYNAMIC_TYPE_U32,
  99         SIDE_DYNAMIC_TYPE_U64,
 100         SIDE_DYNAMIC_TYPE_S8,
 101         SIDE_DYNAMIC_TYPE_S16,
 102         SIDE_DYNAMIC_TYPE_S32,
 103         SIDE_DYNAMIC_TYPE_S64,
 104
 105         SIDE_DYNAMIC_TYPE_FLOAT_BINARY16,
 106         SIDE_DYNAMIC_TYPE_FLOAT_BINARY32,
 107         SIDE_DYNAMIC_TYPE_FLOAT_BINARY64,
 108         SIDE_DYNAMIC_TYPE_FLOAT_BINARY128,
 109
 110         SIDE_DYNAMIC_TYPE_STRING,
 111
 112         SIDE_DYNAMIC_TYPE_STRUCT,
 113         SIDE_DYNAMIC_TYPE_STRUCT_VISITOR,
 114
 115         SIDE_DYNAMIC_TYPE_VLA,
 116         SIDE_DYNAMIC_TYPE_VLA_VISITOR,
 117 };
 118
 119 enum side_attr_type {
 120         SIDE_ATTR_TYPE_BOOL,
 121
 122         SIDE_ATTR_TYPE_U8,
 123         SIDE_ATTR_TYPE_U16,
 124         SIDE_ATTR_TYPE_U32,
 125         SIDE_ATTR_TYPE_U64,
 126         SIDE_ATTR_TYPE_S8,
 127         SIDE_ATTR_TYPE_S16,
 128         SIDE_ATTR_TYPE_S32,
 129         SIDE_ATTR_TYPE_S64,
 130
 131         SIDE_ATTR_TYPE_FLOAT_BINARY16,
 132         SIDE_ATTR_TYPE_FLOAT_BINARY32,
 133         SIDE_ATTR_TYPE_FLOAT_BINARY64,
 134         SIDE_ATTR_TYPE_FLOAT_BINARY128,
 135
 136         SIDE_ATTR_TYPE_STRING,
 137 };
 138
 139 enum side_loglevel {
 140         SIDE_LOGLEVEL_EMERG = 0,
 141         SIDE_LOGLEVEL_ALERT = 1,
 142         SIDE_LOGLEVEL_CRIT = 2,
 143         SIDE_LOGLEVEL_ERR = 3,
 144         SIDE_LOGLEVEL_WARNING = 4,
 145         SIDE_LOGLEVEL_NOTICE = 5,
 146         SIDE_LOGLEVEL_INFO = 6,
 147         SIDE_LOGLEVEL_DEBUG = 7,
 148 };
 149
 150 enum side_visitor_status {
 151         SIDE_VISITOR_STATUS_OK = 0,
 152         SIDE_VISITOR_STATUS_ERROR = -1,
 153 };
 154
 155 typedef enum side_visitor_status (*side_visitor)(
 156                 const struct side_tracer_visitor_ctx *tracer_ctx,
 157                 void *app_ctx);
 158 typedef enum side_visitor_status (*side_dynamic_struct_visitor)(
 159                 const struct side_tracer_dynamic_struct_visitor_ctx *tracer_ctx,
 160                 void *app_ctx);
 161 typedef enum side_visitor_status (*side_dynamic_vla_visitor)(
 162                 const struct side_tracer_dynamic_vla_visitor_ctx *tracer_ctx,
 163                 void *app_ctx);
 164
 165 struct side_attr_value {
 166         uint32_t type;  /* enum side_attr_type */
 167         union {
 168                 uint8_t side_bool;
 169
 170                 uint8_t side_u8;
 171                 uint16_t side_u16;
 172                 uint32_t side_u32;
 173                 uint64_t side_u64;
 174                 int8_t side_s8;
 175                 int16_t side_s16;
 176                 int32_t side_s32;
 177                 int64_t side_s64;
 178
 179 #if __HAVE_FLOAT16
 180                 _Float16 side_float_binary16;
 181 #endif
 182 #if __HAVE_FLOAT32
 183                 _Float32 side_float_binary32;
 184 #endif
 185 #if __HAVE_FLOAT64
 186                 _Float64 side_float_binary64;
 187 #endif
 188 #if __HAVE_FLOAT128
 189                 _Float128 side_float_binary128;
 190 #endif
 191
 192                 const char *string;
 193         } u;
 194 };
 195
 196 /* User attributes. */
 197 struct side_attr {
 198         const char *key;
 199         const struct side_attr_value value;
 200 };
 201
 202 struct side_enum_mapping {
 203         int64_t range_begin;
 204         int64_t range_end;
 205         const char *label;
 206 };
 207
 208 struct side_enum_mappings {
 209         const struct side_enum_mapping *mappings;
 210         uint32_t nr_mappings;
 211 };
 212
 213 struct side_enum_bitmap_mapping {
 214         int64_t range_begin;
 215         int64_t range_end;
 216         const char *label;
 217 };
 218
 219 struct side_enum_bitmap_mappings {
 220         const struct side_enum_bitmap_mapping *mappings;
 221         uint32_t nr_mappings;
 222 };
 223
 224 struct side_type_description {
 225         uint32_t type;  /* enum side_type */
 226         uint32_t nr_attr;
 227         const struct side_attr *attr;
 228         union {
 229                 struct {
 230                         uint32_t nr_fields;
 231                         const struct side_event_field *fields;
 232                 } side_struct;
 233                 struct {
 234                         uint32_t length;
 235                         const struct side_type_description *elem_type;
 236                 } side_array;
 237                 struct {
 238                         const struct side_type_description *elem_type;
 239                 } side_vla;
 240                 struct {
 241                         const struct side_type_description *elem_type;
 242                         side_visitor visitor;
 243                 } side_vla_visitor;
 244                 const struct side_enum_mappings *side_enum_mappings;
 245                 const struct side_enum_bitmap_mappings *side_enum_bitmap_mappings;
 246         } u;
 247 };
 248
 249 struct side_event_field {
 250         const char *field_name;
 251         struct side_type_description side_type;
 252 };
 253
 254 enum side_event_flags {
 255         SIDE_EVENT_FLAG_VARIADIC = (1 << 0),
 256 };
 257
 258 struct side_event_description {
 259         uint32_t version;
 260         uint32_t enabled;
 261         uint32_t loglevel;      /* enum side_loglevel */
 262         uint32_t nr_fields;
 263         uint32_t nr_attr;
 264         uint32_t _unused;
 265         uint64_t flags;
 266         const char *provider_name;
 267         const char *event_name;
 268         const struct side_event_field *fields;
 269         const struct side_attr *attr;
 270 };
 271
 272 struct side_arg_dynamic_vec_vla {
 273         const struct side_arg_dynamic_vec *sav;
 274         uint32_t len;
 275 };
 276
 277 struct side_arg_dynamic_vec {
 278         uint32_t dynamic_type;  /* enum side_dynamic_type */
 279         uint32_t nr_attr;
 280         const struct side_attr *attr;
 281         union {
 282                 uint8_t side_bool;
 283
 284                 uint8_t side_u8;
 285                 uint16_t side_u16;
 286                 uint32_t side_u32;
 287                 uint64_t side_u64;
 288                 int8_t side_s8;
 289                 int16_t side_s16;
 290                 int32_t side_s32;
 291                 int64_t side_s64;
 292
 293 #if __HAVE_FLOAT16
 294                 _Float16 side_float_binary16;
 295 #endif
 296 #if __HAVE_FLOAT32
 297                 _Float32 side_float_binary32;
 298 #endif
 299 #if __HAVE_FLOAT64
 300                 _Float64 side_float_binary64;
 301 #endif
 302 #if __HAVE_FLOAT128
 303                 _Float128 side_float_binary128;
 304 #endif
 305
 306                 const char *string;
 307
 308                 const struct side_arg_dynamic_event_struct *side_dynamic_struct;
 309                 struct {
 310                         void *app_ctx;
 311                         side_dynamic_struct_visitor visitor;
 312                 } side_dynamic_struct_visitor;
 313
 314                 const struct side_arg_dynamic_vec_vla *side_dynamic_vla;
 315                 struct {
 316                         void *app_ctx;
 317                         side_dynamic_vla_visitor visitor;
 318                 } side_dynamic_vla_visitor;
 319         } u;
 320 };
 321
 322 struct side_arg_dynamic_event_field {
 323         const char *field_name;
 324         const struct side_arg_dynamic_vec elem;
 325 };
 326
 327 struct side_arg_dynamic_event_struct {
 328         const struct side_arg_dynamic_event_field *fields;
 329         uint32_t len;
 330 };
 331
 332 struct side_arg_vec {
 333         enum side_type type;
 334         union {
 335                 uint8_t side_bool;
 336
 337                 uint8_t side_u8;
 338                 uint16_t side_u16;
 339                 uint32_t side_u32;
 340                 uint64_t side_u64;
 341                 int8_t side_s8;
 342                 int16_t side_s16;
 343                 int32_t side_s32;
 344                 int64_t side_s64;
 345
 346 #if __HAVE_FLOAT16
 347                 _Float16 side_float_binary16;
 348 #endif
 349 #if __HAVE_FLOAT32
 350                 _Float32 side_float_binary32;
 351 #endif
 352 #if __HAVE_FLOAT64
 353                 _Float64 side_float_binary64;
 354 #endif
 355 #if __HAVE_FLOAT128
 356                 _Float128 side_float_binary128;
 357 #endif
 358
 359                 const char *string;
 360                 const struct side_arg_vec_description *side_struct;
 361                 const struct side_arg_vec_description *side_array;
 362                 const struct side_arg_vec_description *side_vla;
 363                 void *side_vla_app_visitor_ctx;
 364
 365                 void *side_array_fixint;
 366                 struct {
 367                         void *p;
 368                         uint32_t length;
 369                 } side_vla_fixint;
 370
 371                 struct side_arg_dynamic_vec dynamic;
 372         } u;
 373 };
 374
 375 struct side_arg_vec_description {
 376         const struct side_arg_vec *sav;
 377         uint32_t len;
 378 };
 379
 380 /* The visitor pattern is a double-dispatch visitor. */
 381 struct side_tracer_visitor_ctx {
 382         enum side_visitor_status (*write_elem)(
 383                         const struct side_tracer_visitor_ctx *tracer_ctx,
 384                         const struct side_arg_vec *elem);
 385         void *priv;             /* Private tracer context. */
 386 };
 387
 388 struct side_tracer_dynamic_struct_visitor_ctx {
 389         enum side_visitor_status (*write_field)(
 390                         const struct side_tracer_dynamic_struct_visitor_ctx *tracer_ctx,
 391                         const struct side_arg_dynamic_event_field *dynamic_field);
 392         void *priv;             /* Private tracer context. */
 393 };
 394
 395 struct side_tracer_dynamic_vla_visitor_ctx {
 396         enum side_visitor_status (*write_elem)(
 397                         const struct side_tracer_dynamic_vla_visitor_ctx *tracer_ctx,
 398                         const struct side_arg_dynamic_vec *elem);
 399         void *priv;             /* Private tracer context. */
 400 };
 401
 402 #define side_attr(_key, _value) \
 403         { \
 404                 .key = _key, \
 405                 .value = SIDE_PARAM(_value), \
 406         }
 407
 408 #define side_attr_list(...) \
 409         SIDE_COMPOUND_LITERAL(const struct side_attr, __VA_ARGS__)
 410
 411 #define _side_type(_type, _attr) \
 412         { \
 413                 .type = _type, \
 414                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 415                 .attr = _attr, \
 416         }
 417
 418 #define side_type_bool(_attr)                           _side_type(SIDE_TYPE_BOOL, SIDE_PARAM(_attr))
 419 #define side_type_u8(_attr)                             _side_type(SIDE_TYPE_U8, SIDE_PARAM(_attr))
 420 #define side_type_u16(_attr)                            _side_type(SIDE_TYPE_U16, SIDE_PARAM(_attr))
 421 #define side_type_u32(_attr)                            _side_type(SIDE_TYPE_U32, SIDE_PARAM(_attr))
 422 #define side_type_u64(_attr)                            _side_type(SIDE_TYPE_U64, SIDE_PARAM(_attr))
 423 #define side_type_s8(_attr)                             _side_type(SIDE_TYPE_S8, SIDE_PARAM(_attr))
 424 #define side_type_s16(_attr)                            _side_type(SIDE_TYPE_S16, SIDE_PARAM(_attr))
 425 #define side_type_s32(_attr)                            _side_type(SIDE_TYPE_S32, SIDE_PARAM(_attr))
 426 #define side_type_s64(_attr)                            _side_type(SIDE_TYPE_S64, SIDE_PARAM(_attr))
 427 #define side_type_float_binary16(_attr)                 _side_type(SIDE_TYPE_FLOAT_BINARY16, SIDE_PARAM(_attr))
 428 #define side_type_float_binary32(_attr)                 _side_type(SIDE_TYPE_FLOAT_BINARY32, SIDE_PARAM(_attr))
 429 #define side_type_float_binary64(_attr)                 _side_type(SIDE_TYPE_FLOAT_BINARY64, SIDE_PARAM(_attr))
 430 #define side_type_float_binary128(_attr)                _side_type(SIDE_TYPE_FLOAT_BINARY128, SIDE_PARAM(_attr))
 431 #define side_type_string(_attr)                         _side_type(SIDE_TYPE_STRING, SIDE_PARAM(_attr))
 432 #define side_type_dynamic(_attr)                        _side_type(SIDE_TYPE_DYNAMIC, SIDE_PARAM(_attr))
 433
 434 #define _side_field(_name, _type) \
 435         { \
 436                 .field_name = _name, \
 437                 .side_type = _type, \
 438         }
 439
 440 #define side_field_bool(_name, _attr)                   _side_field(_name, side_type_bool(SIDE_PARAM(_attr)))
 441 #define side_field_u8(_name, _attr)                     _side_field(_name, side_type_u8(SIDE_PARAM(_attr)))
 442 #define side_field_u16(_name, _attr)                    _side_field(_name, side_type_u16(SIDE_PARAM(_attr)))
 443 #define side_field_u32(_name, _attr)                    _side_field(_name, side_type_u32(SIDE_PARAM(_attr)))
 444 #define side_field_u64(_name, _attr)                    _side_field(_name, side_type_u64(SIDE_PARAM(_attr)))
 445 #define side_field_s8(_name, _attr)                     _side_field(_name, side_type_s8(SIDE_PARAM(_attr)))
 446 #define side_field_s16(_name, _attr)                    _side_field(_name, side_type_s16(SIDE_PARAM(_attr)))
 447 #define side_field_s32(_name, _attr)                    _side_field(_name, side_type_s32(SIDE_PARAM(_attr)))
 448 #define side_field_s64(_name, _attr)                    _side_field(_name, side_type_s64(SIDE_PARAM(_attr)))
 449 #define side_field_float_binary16(_name, _attr)         _side_field(_name, side_type_float_binary16(SIDE_PARAM(_attr)))
 450 #define side_field_float_binary32(_name, _attr)         _side_field(_name, side_type_float_binary32(SIDE_PARAM(_attr)))
 451 #define side_field_float_binary64(_name, _attr)         _side_field(_name, side_type_float_binary64(SIDE_PARAM(_attr)))
 452 #define side_field_float_binary128(_name, _attr)        _side_field(_name, side_type_float_binary128(SIDE_PARAM(_attr)))
 453 #define side_field_string(_name, _attr)                 _side_field(_name, side_type_string(SIDE_PARAM(_attr)))
 454 #define side_field_dynamic(_name, _attr)                _side_field(_name, side_type_dynamic(SIDE_PARAM(_attr)))
 455
 456 #define side_type_enum(_type, _mappings, _attr) \
 457         { \
 458                 .type = _type, \
 459                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 460                 .attr = _attr, \
 461                 .u = { \
 462                         .side_enum_mappings = _mappings, \
 463                 }, \
 464         }
 465 #define _side_field_enum(_name, _type, _mappings, _attr) \
 466         _side_field(_name, side_type_enum(_type, SIDE_PARAM(_mappings), SIDE_PARAM(_attr)))
 467
 468 #define side_field_enum_u8(_name, _mappings, _attr) \
 469         _side_field_enum(_name, SIDE_TYPE_ENUM_U8, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 470 #define side_field_enum_u16(_name, _mappings, _attr) \
 471         _side_field_enum(_name, SIDE_TYPE_ENUM_U16, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 472 #define side_field_enum_u32(_name, _mappings, _attr) \
 473         _side_field_enum(_name, SIDE_TYPE_ENUM_U32, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 474 #define side_field_enum_u64(_name, _mappings, _attr) \
 475         _side_field_enum(_name, SIDE_TYPE_ENUM_U64, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 476 #define side_field_enum_s8(_name, _mappings, _attr) \
 477         _side_field_enum(_name, SIDE_TYPE_ENUM_S8, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 478 #define side_field_enum_s16(_name, _mappings, _attr) \
 479         _side_field_enum(_name, SIDE_TYPE_ENUM_S16, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 480 #define side_field_enum_s32(_name, _mappings, _attr) \
 481         _side_field_enum(_name, SIDE_TYPE_ENUM_S32, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 482 #define side_field_enum_s64(_name, _mappings, _attr) \
 483         _side_field_enum(_name, SIDE_TYPE_ENUM_S64, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 484
 485 #define side_type_enum_bitmap(_type, _mappings, _attr) \
 486         { \
 487                 .type = _type, \
 488                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 489                 .attr = _attr, \
 490                 .u = { \
 491                         .side_enum_bitmap_mappings = _mappings, \
 492                 }, \
 493         }
 494 #define _side_field_enum_bitmap(_name, _type, _mappings, _attr) \
 495         _side_field(_name, side_type_enum_bitmap(_type, SIDE_PARAM(_mappings), SIDE_PARAM(_attr)))
 496
 497 #define side_field_enum_bitmap8(_name, _mappings, _attr) \
 498         _side_field_enum_bitmap(_name, SIDE_TYPE_ENUM_BITMAP8, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 499 #define side_field_enum_bitmap16(_name, _mappings, _attr) \
 500         _side_field_enum_bitmap(_name, SIDE_TYPE_ENUM_BITMAP16, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 501 #define side_field_enum_bitmap32(_name, _mappings, _attr) \
 502         _side_field_enum_bitmap(_name, SIDE_TYPE_ENUM_BITMAP32, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 503 #define side_field_enum_bitmap64(_name, _mappings, _attr) \
 504         _side_field_enum_bitmap(_name, SIDE_TYPE_ENUM_BITMAP64, SIDE_PARAM(_mappings), SIDE_PARAM(_attr))
 505
 506 #define side_type_struct(_fields, _attr) \
 507         { \
 508                 .type = SIDE_TYPE_STRUCT, \
 509                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 510                 .attr = _attr, \
 511                 .u = { \
 512                         .side_struct = { \
 513                                 .nr_fields = SIDE_ARRAY_SIZE(SIDE_PARAM(_fields)), \
 514                                 .fields = _fields, \
 515                         }, \
 516                 }, \
 517         }
 518 #define side_field_struct(_name, _fields, _attr) \
 519         _side_field(_name, side_type_struct(SIDE_PARAM(_fields), SIDE_PARAM(_attr)))
 520
 521 #define side_type_array(_elem_type, _length, _attr) \
 522         { \
 523                 .type = SIDE_TYPE_ARRAY, \
 524                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 525                 .attr = _attr, \
 526                 .u = { \
 527                         .side_array = { \
 528                                 .length = _length, \
 529                                 .elem_type = _elem_type, \
 530                         }, \
 531                 }, \
 532         }
 533 #define side_field_array(_name, _elem_type, _length, _attr) \
 534         _side_field(_name, side_type_array(SIDE_PARAM(_elem_type), _length, SIDE_PARAM(_attr)))
 535
 536 #define side_type_vla(_elem_type, _attr) \
 537         { \
 538                 .type = SIDE_TYPE_VLA, \
 539                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 540                 .attr = _attr, \
 541                 .u = { \
 542                         .side_vla = { \
 543                                 .elem_type = _elem_type, \
 544                         }, \
 545                 }, \
 546         }
 547 #define side_field_vla(_name, _elem_type, _attr) \
 548         _side_field(_name, side_type_vla(SIDE_PARAM(_elem_type), SIDE_PARAM(_attr)))
 549
 550 #define side_type_vla_visitor(_elem_type, _visitor, _attr) \
 551         { \
 552                 .type = SIDE_TYPE_VLA_VISITOR, \
 553                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 554                 .attr = _attr, \
 555                 .u = { \
 556                         .side_vla_visitor = { \
 557                                 .elem_type = SIDE_PARAM(_elem_type), \
 558                                 .visitor = _visitor, \
 559                         }, \
 560                 }, \
 561         }
 562 #define side_field_vla_visitor(_name, _elem_type, _visitor, _attr) \
 563         _side_field(_name, side_type_vla_visitor(SIDE_PARAM(_elem_type), _visitor, SIDE_PARAM(_attr)))
 564
 565 #define side_elem(...) \
 566         SIDE_COMPOUND_LITERAL(const struct side_type_description, __VA_ARGS__)
 567
 568 #define side_field_list(...) \
 569         SIDE_COMPOUND_LITERAL(const struct side_event_field, __VA_ARGS__)
 570
 571 #define side_arg_bool(val)              { .type = SIDE_TYPE_BOOL, .u = { .side_bool = !!(val) } }
 572 #define side_arg_u8(val)                { .type = SIDE_TYPE_U8, .u = { .side_u8 = (val) } }
 573 #define side_arg_u16(val)               { .type = SIDE_TYPE_U16, .u = { .side_u16 = (val) } }
 574 #define side_arg_u32(val)               { .type = SIDE_TYPE_U32, .u = { .side_u32 = (val) } }
 575 #define side_arg_u64(val)               { .type = SIDE_TYPE_U64, .u = { .side_u64 = (val) } }
 576 #define side_arg_s8(val)                { .type = SIDE_TYPE_S8, .u = { .side_s8 = (val) } }
 577 #define side_arg_s16(val)               { .type = SIDE_TYPE_S16, .u = { .side_s16 = (val) } }
 578 #define side_arg_s32(val)               { .type = SIDE_TYPE_S32, .u = { .side_s32 = (val) } }
 579 #define side_arg_s64(val)               { .type = SIDE_TYPE_S64, .u = { .side_s64 = (val) } }
 580 #define side_arg_enum_u8(val)           { .type = SIDE_TYPE_ENUM_U8, .u = { .side_u8 = (val) } }
 581 #define side_arg_enum_u16(val)          { .type = SIDE_TYPE_ENUM_U16, .u = { .side_u16 = (val) } }
 582 #define side_arg_enum_u32(val)          { .type = SIDE_TYPE_ENUM_U32, .u = { .side_u32 = (val) } }
 583 #define side_arg_enum_u64(val)          { .type = SIDE_TYPE_ENUM_U64, .u = { .side_u64 = (val) } }
 584 #define side_arg_enum_s8(val)           { .type = SIDE_TYPE_ENUM_S8, .u = { .side_s8 = (val) } }
 585 #define side_arg_enum_s16(val)          { .type = SIDE_TYPE_ENUM_S16, .u = { .side_s16 = (val) } }
 586 #define side_arg_enum_s32(val)          { .type = SIDE_TYPE_ENUM_S32, .u = { .side_s32 = (val) } }
 587 #define side_arg_enum_s64(val)          { .type = SIDE_TYPE_ENUM_S64, .u = { .side_s64 = (val) } }
 588 #define side_arg_enum_bitmap8(val)      { .type = SIDE_TYPE_ENUM_BITMAP8, .u = { .side_u8 = (val) } }
 589 #define side_arg_enum_bitmap16(val)     { .type = SIDE_TYPE_ENUM_BITMAP16, .u = { .side_u16 = (val) } }
 590 #define side_arg_enum_bitmap32(val)     { .type = SIDE_TYPE_ENUM_BITMAP32, .u = { .side_u32 = (val) } }
 591 #define side_arg_enum_bitmap64(val)     { .type = SIDE_TYPE_ENUM_BITMAP64, .u = { .side_u64 = (val) } }
 592 #define side_arg_float_binary16(val)    { .type = SIDE_TYPE_FLOAT_BINARY16, .u = { .side_float_binary16 = (val) } }
 593 #define side_arg_float_binary32(val)    { .type = SIDE_TYPE_FLOAT_BINARY32, .u = { .side_float_binary32 = (val) } }
 594 #define side_arg_float_binary64(val)    { .type = SIDE_TYPE_FLOAT_BINARY64, .u = { .side_float_binary64 = (val) } }
 595 #define side_arg_float_binary128(val)   { .type = SIDE_TYPE_FLOAT_BINARY128, .u = { .side_float_binary128 = (val) } }
 596
 597 #define side_arg_string(val)            { .type = SIDE_TYPE_STRING, .u = { .string = (val) } }
 598 #define side_arg_struct(_side_type)     { .type = SIDE_TYPE_STRUCT, .u = { .side_struct = (_side_type) } }
 599 #define side_arg_array(_side_type)      { .type = SIDE_TYPE_ARRAY, .u = { .side_array = (_side_type) } }
 600 #define side_arg_vla(_side_type)        { .type = SIDE_TYPE_VLA, .u = { .side_vla = (_side_type) } }
 601 #define side_arg_vla_visitor(_ctx)      { .type = SIDE_TYPE_VLA_VISITOR, .u = { .side_vla_app_visitor_ctx = (_ctx) } }
 602
 603 #define side_arg_array_u8(_ptr)         { .type = SIDE_TYPE_ARRAY_U8, .u = { .side_array_fixint = (_ptr) } }
 604 #define side_arg_array_u16(_ptr)        { .type = SIDE_TYPE_ARRAY_U16, .u = { .side_array_fixint = (_ptr) } }
 605 #define side_arg_array_u32(_ptr)        { .type = SIDE_TYPE_ARRAY_U32, .u = { .side_array_fixint = (_ptr) } }
 606 #define side_arg_array_u64(_ptr)        { .type = SIDE_TYPE_ARRAY_U64, .u = { .side_array_fixint = (_ptr) } }
 607 #define side_arg_array_s8(_ptr)         { .type = SIDE_TYPE_ARRAY_S8, .u = { .side_array_fixint = (_ptr) } }
 608 #define side_arg_array_s16(_ptr)        { .type = SIDE_TYPE_ARRAY_S16, .u = { .side_array_fixint  = (_ptr) } }
 609 #define side_arg_array_s32(_ptr)        { .type = SIDE_TYPE_ARRAY_S32, .u = { .side_array_fixint = (_ptr) } }
 610 #define side_arg_array_s64(_ptr)        { .type = SIDE_TYPE_ARRAY_S64, .u = { .side_array_fixint = (_ptr) } }
 611
 612 #define side_arg_vla_u8(_ptr, _length)  { .type = SIDE_TYPE_VLA_U8, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } }
 613 #define side_arg_vla_u16(_ptr, _length) { .type = SIDE_TYPE_VLA_U16, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 614 #define side_arg_vla_u32(_ptr, _length) { .type = SIDE_TYPE_VLA_U32, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 615 #define side_arg_vla_u64(_ptr, _length) { .type = SIDE_TYPE_VLA_U64, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 616 #define side_arg_vla_s8(_ptr, _length)  { .type = SIDE_TYPE_VLA_S8, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 617 #define side_arg_vla_s16(_ptr, _length) { .type = SIDE_TYPE_VLA_S16, .u = { .side_vla_fixint  = { .p = (_ptr), .length = (_length) } } }
 618 #define side_arg_vla_s32(_ptr, _length) { .type = SIDE_TYPE_VLA_S32, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 619 #define side_arg_vla_s64(_ptr, _length) { .type = SIDE_TYPE_VLA_S64, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 620
 621 #define side_arg_dynamic(dynamic_arg_type) \
 622         { \
 623                 .type = SIDE_TYPE_DYNAMIC, \
 624                 .u = { \
 625                         .dynamic = dynamic_arg_type, \
 626                 }, \
 627         }
 628
 629 #define side_arg_dynamic_null(_attr) \
 630         { \
 631                 .dynamic_type = SIDE_DYNAMIC_TYPE_NULL, \
 632                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 633                 .attr = _attr, \
 634         }
 635
 636 #define side_arg_dynamic_bool(_val, _attr) \
 637         { \
 638                 .dynamic_type = SIDE_DYNAMIC_TYPE_BOOL, \
 639                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 640                 .attr = _attr, \
 641                 .u = { \
 642                         .side_bool = !!(_val), \
 643                 }, \
 644         }
 645
 646 #define side_arg_dynamic_u8(_val, _attr) \
 647         { \
 648                 .dynamic_type = SIDE_DYNAMIC_TYPE_U8, \
 649                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 650                 .attr = _attr, \
 651                 .u = { \
 652                         .side_u8 = (_val), \
 653                 }, \
 654         }
 655 #define side_arg_dynamic_u16(_val, _attr) \
 656         { \
 657                 .dynamic_type = SIDE_DYNAMIC_TYPE_U16, \
 658                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 659                 .attr = _attr, \
 660                 .u = { \
 661                         .side_u16 = (_val), \
 662                 }, \
 663         }
 664 #define side_arg_dynamic_u32(_val, _attr) \
 665         { \
 666                 .dynamic_type = SIDE_DYNAMIC_TYPE_U32, \
 667                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 668                 .attr = _attr, \
 669                 .u = { \
 670                         .side_u32 = (_val), \
 671                 }, \
 672         }
 673 #define side_arg_dynamic_u64(_val, _attr) \
 674         { \
 675                 .dynamic_type = SIDE_DYNAMIC_TYPE_U64, \
 676                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 677                 .attr = _attr, \
 678                 .u = { \
 679                         .side_u64 = (_val), \
 680                 }, \
 681         }
 682
 683 #define side_arg_dynamic_s8(_val, _attr) \
 684         { \
 685                 .dynamic_type = SIDE_DYNAMIC_TYPE_S8, \
 686                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 687                 .attr = _attr, \
 688                 .u = { \
 689                         .side_s8 = (_val), \
 690                 }, \
 691         }
 692 #define side_arg_dynamic_s16(_val, _attr) \
 693         { \
 694                 .dynamic_type = SIDE_DYNAMIC_TYPE_S16, \
 695                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 696                 .attr = _attr, \
 697                 .u = { \
 698                         .side_s16 = (_val), \
 699                 }, \
 700         }
 701 #define side_arg_dynamic_s32(_val, _attr) \
 702         { \
 703                 .dynamic_type = SIDE_DYNAMIC_TYPE_S32, \
 704                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 705                 .attr = _attr, \
 706                 .u = { \
 707                         .side_s32 = (_val), \
 708                 }, \
 709         }
 710 #define side_arg_dynamic_s64(_val, _attr) \
 711         { \
 712                 .dynamic_type = SIDE_DYNAMIC_TYPE_S64, \
 713                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 714                 .attr = _attr, \
 715                 .u = { \
 716                         .side_s64 = (_val), \
 717                 }, \
 718         }
 719
 720 #define side_arg_dynamic_float_binary16(_val, _attr) \
 721         { \
 722                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY16, \
 723                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 724                 .attr = _attr, \
 725                 .u = { \
 726                         .side_float_binary16 = (_val), \
 727                 }, \
 728         }
 729 #define side_arg_dynamic_float_binary32(_val, _attr) \
 730         { \
 731                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY32, \
 732                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 733                 .attr = _attr, \
 734                 .u = { \
 735                         .side_float_binary32 = (_val), \
 736                 }, \
 737         }
 738 #define side_arg_dynamic_float_binary64(_val, _attr) \
 739         { \
 740                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY64, \
 741                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 742                 .attr = _attr, \
 743                 .u = { \
 744                         .side_float_binary64 = (_val), \
 745                 }, \
 746         }
 747 #define side_arg_dynamic_float_binary128(_val, _attr) \
 748         { \
 749                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY128, \
 750                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 751                 .attr = _attr, \
 752                 .u = { \
 753                         .side_float_binary128 = (_val), \
 754                 }, \
 755         }
 756
 757 #define side_arg_dynamic_string(_val, _attr) \
 758         { \
 759                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRING, \
 760                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 761                 .attr = _attr, \
 762                 .u = { \
 763                         .string = (_val), \
 764                 }, \
 765         }
 766
 767 #define side_arg_dynamic_vla(_vla, _attr) \
 768         { \
 769                 .dynamic_type = SIDE_DYNAMIC_TYPE_VLA, \
 770                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 771                 .attr = _attr, \
 772                 .u = { \
 773                         .side_dynamic_vla = (_vla), \
 774                 }, \
 775         }
 776
 777 #define side_arg_dynamic_vla_visitor(_dynamic_vla_visitor, _ctx, _attr) \
 778         { \
 779                 .dynamic_type = SIDE_DYNAMIC_TYPE_VLA_VISITOR, \
 780                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 781                 .attr = _attr, \
 782                 .u = { \
 783                         .side_dynamic_vla_visitor = { \
 784                                 .app_ctx = _ctx, \
 785                                 .visitor = _dynamic_vla_visitor, \
 786                         }, \
 787                 }, \
 788         }
 789
 790 #define side_arg_dynamic_struct(_struct, _attr) \
 791         { \
 792                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRUCT, \
 793                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 794                 .attr = _attr, \
 795                 .u = { \
 796                         .side_dynamic_struct = (_struct), \
 797                 }, \
 798         }
 799
 800 #define side_arg_dynamic_struct_visitor(_dynamic_struct_visitor, _ctx, _attr) \
 801         { \
 802                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRUCT_VISITOR, \
 803                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 804                 .attr = _attr, \
 805                 .u = { \
 806                         .side_dynamic_struct_visitor = { \
 807                                 .app_ctx = _ctx, \
 808                                 .visitor = _dynamic_struct_visitor, \
 809                         }, \
 810                 }, \
 811         }
 812
 813 #define side_arg_dynamic_define_vec(_identifier, _sav) \
 814         const struct side_arg_dynamic_vec _identifier##_vec[] = { _sav }; \
 815         const struct side_arg_dynamic_vec_vla _identifier = { \
 816                 .sav = _identifier##_vec, \
 817                 .len = SIDE_ARRAY_SIZE(_identifier##_vec), \
 818         }
 819
 820 #define side_arg_dynamic_define_struct(_identifier, _struct_fields) \
 821         const struct side_arg_dynamic_event_field _identifier##_fields[] = { _struct_fields }; \
 822         const struct side_arg_dynamic_event_struct _identifier = { \
 823                 .fields = _identifier##_fields, \
 824                 .len = SIDE_ARRAY_SIZE(_identifier##_fields), \
 825         }
 826
 827 #define side_arg_define_vec(_identifier, _sav) \
 828         const struct side_arg_vec _identifier##_vec[] = { _sav }; \
 829         const struct side_arg_vec_description _identifier = { \
 830                 .sav = _identifier##_vec, \
 831                 .len = SIDE_ARRAY_SIZE(_identifier##_vec), \
 832         }
 833
 834 #define side_arg_dynamic_field(_name, _elem) \
 835         { \
 836                 .field_name = _name, \
 837                 .elem = _elem, \
 838         }
 839
 840 #define side_arg_list(...)      __VA_ARGS__
 841
 842 #define side_attr_bool(val)             { .type = SIDE_ATTR_TYPE_BOOL, .u = { .side_bool = !!(val) } }
 843 #define side_attr_u8(val)               { .type = SIDE_ATTR_TYPE_U8, .u = { .side_u8 = (val) } }
 844 #define side_attr_u16(val)              { .type = SIDE_ATTR_TYPE_U16, .u = { .side_u16 = (val) } }
 845 #define side_attr_u32(val)              { .type = SIDE_ATTR_TYPE_U32, .u = { .side_u32 = (val) } }
 846 #define side_attr_u64(val)              { .type = SIDE_ATTR_TYPE_U64, .u = { .side_u64 = (val) } }
 847 #define side_attr_s8(val)               { .type = SIDE_ATTR_TYPE_S8, .u = { .side_s8 = (val) } }
 848 #define side_attr_s16(val)              { .type = SIDE_ATTR_TYPE_S16, .u = { .side_s16 = (val) } }
 849 #define side_attr_s32(val)              { .type = SIDE_ATTR_TYPE_S32, .u = { .side_s32 = (val) } }
 850 #define side_attr_s64(val)              { .type = SIDE_ATTR_TYPE_S64, .u = { .side_s64 = (val) } }
 851 #define side_attr_float_binary16(val)   { .type = SIDE_ATTR_TYPE_FLOAT_BINARY16, .u = { .side_float_binary16 = (val) } }
 852 #define side_attr_float_binary32(val)   { .type = SIDE_ATTR_TYPE_FLOAT_BINARY32, .u = { .side_float_binary32 = (val) } }
 853 #define side_attr_float_binary64(val)   { .type = SIDE_ATTR_TYPE_FLOAT_BINARY64, .u = { .side_float_binary64 = (val) } }
 854 #define side_attr_float_binary128(val)  { .type = SIDE_ATTR_TYPE_FLOAT_BINARY128, .u = { .side_float_binary128 = (val) } }
 855 #define side_attr_string(val)           { .type = SIDE_ATTR_TYPE_STRING, .u = { .string = (val) } }
 856
 857 #define side_event_cond(desc) if (side_unlikely((desc)->enabled))
 858
 859 #define side_event_call(desc, _sav) \
 860         { \
 861                 const struct side_arg_vec side_sav[] = { _sav }; \
 862                 const struct side_arg_vec_description sav_desc = { \
 863                         .sav = side_sav, \
 864                         .len = SIDE_ARRAY_SIZE(side_sav), \
 865                 }; \
 866                 side_call(desc, &sav_desc); \
 867         }
 868
 869 #define side_event(desc, sav) \
 870         side_event_cond(desc) \
 871                 side_event_call(desc, SIDE_PARAM(sav))
 872
 873 #define side_event_call_variadic(desc, _sav, _var_fields) \
 874         { \
 875                 const struct side_arg_vec side_sav[] = { _sav }; \
 876                 const struct side_arg_vec_description sav_desc = { \
 877                         .sav = side_sav, \
 878                         .len = SIDE_ARRAY_SIZE(side_sav), \
 879                 }; \
 880                 const struct side_arg_dynamic_event_field side_fields[] = { _var_fields }; \
 881                 const struct side_arg_dynamic_event_struct var_struct = { \
 882                         .fields = side_fields, \
 883                         .len = SIDE_ARRAY_SIZE(side_fields), \
 884                 }; \
 885                 side_call_variadic(desc, &sav_desc, &var_struct); \
 886         }
 887
 888 #define side_event_variadic(desc, sav, var) \
 889         side_event_cond(desc) \
 890                 side_event_call_variadic(desc, SIDE_PARAM(sav), SIDE_PARAM(var))
 891
 892 #define side_define_enum(_identifier, _mappings) \
 893         const struct side_enum_mappings _identifier = { \
 894                 .mappings = _mappings, \
 895                 .nr_mappings = SIDE_ARRAY_SIZE(SIDE_PARAM(_mappings)), \
 896         }
 897
 898 #define side_enum_mapping_list(...) \
 899         SIDE_COMPOUND_LITERAL(const struct side_enum_mapping, __VA_ARGS__)
 900
 901 #define side_enum_mapping_range(_label, _begin, _end) \
 902         { \
 903                 .range_begin = _begin, \
 904                 .range_end = _end, \
 905                 .label = _label, \
 906         }
 907
 908 #define side_enum_mapping_value(_label, _value) \
 909         { \
 910                 .range_begin = _value, \
 911                 .range_end = _value, \
 912                 .label = _label, \
 913         }
 914
 915 #define side_define_enum_bitmap(_identifier, _mappings) \
 916         const struct side_enum_bitmap_mappings _identifier = { \
 917                 .mappings = _mappings, \
 918                 .nr_mappings = SIDE_ARRAY_SIZE(SIDE_PARAM(_mappings)), \
 919         }
 920
 921 #define side_enum_bitmap_mapping_list(...) \
 922         SIDE_COMPOUND_LITERAL(const struct side_enum_bitmap_mapping, __VA_ARGS__)
 923
 924 #define side_enum_bitmap_mapping_range(_label, _begin, _end) \
 925         { \
 926                 .range_begin = _begin, \
 927                 .range_end = _end, \
 928                 .label = _label, \
 929         }
 930
 931 #define side_enum_bitmap_mapping_value(_label, _value) \
 932         { \
 933                 .range_begin = _value, \
 934                 .range_end = _value, \
 935                 .label = _label, \
 936         }
 937
 938 #define _side_define_event(_identifier, _provider, _event, _loglevel, _fields, _attr, _flags) \
 939         struct side_event_description _identifier = { \
 940                 .version = 0, \
 941                 .enabled = 0, \
 942                 .loglevel = _loglevel, \
 943                 .nr_fields = SIDE_ARRAY_SIZE(SIDE_PARAM(_fields)), \
 944                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 945                 .flags = (_flags), \
 946                 .provider_name = _provider, \
 947                 .event_name = _event, \
 948                 .fields = _fields, \
 949                 .attr = _attr, \
 950         }
 951
 952 #define side_define_event(_identifier, _provider, _event, _loglevel, _fields, _attr) \
 953         _side_define_event(_identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
 954                         SIDE_PARAM(_attr), 0)
 955
 956 #define side_define_event_variadic(_identifier, _provider, _event, _loglevel, _fields, _attr) \
 957         _side_define_event(_identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
 958                         SIDE_PARAM(_attr), SIDE_EVENT_FLAG_VARIADIC)
 959
 960 #define side_declare_event(_identifier) \
 961         struct side_event_description _identifier
 962
 963 void side_call(const struct side_event_description *desc,
 964         const struct side_arg_vec_description *sav_desc);
 965 void side_call_variadic(const struct side_event_description *desc,
 966         const struct side_arg_vec_description *sav_desc,
 967         const struct side_arg_dynamic_event_struct *var_struct);
 968
 969 #endif /* _SIDE_TRACE_H */