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 struct side_event_description;
  32 struct side_arg_dynamic_event_struct;
  33
  34 enum side_type {
  35         /* Basic types */
  36         SIDE_TYPE_BOOL,
  37         SIDE_TYPE_U8,
  38         SIDE_TYPE_U16,
  39         SIDE_TYPE_U32,
  40         SIDE_TYPE_U64,
  41         SIDE_TYPE_S8,
  42         SIDE_TYPE_S16,
  43         SIDE_TYPE_S32,
  44         SIDE_TYPE_S64,
  45         SIDE_TYPE_BLOB,
  46         SIDE_TYPE_FLOAT_BINARY16,
  47         SIDE_TYPE_FLOAT_BINARY32,
  48         SIDE_TYPE_FLOAT_BINARY64,
  49         SIDE_TYPE_FLOAT_BINARY128,
  50         SIDE_TYPE_STRING,
  51
  52         /* Compound types */
  53         SIDE_TYPE_STRUCT,
  54         SIDE_TYPE_ARRAY,
  55         SIDE_TYPE_VLA,
  56         SIDE_TYPE_VLA_VISITOR,
  57
  58         SIDE_TYPE_ARRAY_U8,
  59         SIDE_TYPE_ARRAY_U16,
  60         SIDE_TYPE_ARRAY_U32,
  61         SIDE_TYPE_ARRAY_U64,
  62         SIDE_TYPE_ARRAY_S8,
  63         SIDE_TYPE_ARRAY_S16,
  64         SIDE_TYPE_ARRAY_S32,
  65         SIDE_TYPE_ARRAY_S64,
  66         SIDE_TYPE_ARRAY_BLOB,
  67
  68         SIDE_TYPE_VLA_U8,
  69         SIDE_TYPE_VLA_U16,
  70         SIDE_TYPE_VLA_U32,
  71         SIDE_TYPE_VLA_U64,
  72         SIDE_TYPE_VLA_S8,
  73         SIDE_TYPE_VLA_S16,
  74         SIDE_TYPE_VLA_S32,
  75         SIDE_TYPE_VLA_S64,
  76         SIDE_TYPE_VLA_BLOB,
  77
  78         /* Enumeration types */
  79         SIDE_TYPE_ENUM,
  80         SIDE_TYPE_ENUM_BITMAP,
  81
  82         /* Dynamic type */
  83         SIDE_TYPE_DYNAMIC,
  84 };
  85
  86 enum side_dynamic_type {
  87         /* Basic types */
  88         SIDE_DYNAMIC_TYPE_NULL,
  89         SIDE_DYNAMIC_TYPE_BOOL,
  90         SIDE_DYNAMIC_TYPE_U8,
  91         SIDE_DYNAMIC_TYPE_U16,
  92         SIDE_DYNAMIC_TYPE_U32,
  93         SIDE_DYNAMIC_TYPE_U64,
  94         SIDE_DYNAMIC_TYPE_S8,
  95         SIDE_DYNAMIC_TYPE_S16,
  96         SIDE_DYNAMIC_TYPE_S32,
  97         SIDE_DYNAMIC_TYPE_S64,
  98         SIDE_DYNAMIC_TYPE_BLOB,
  99         SIDE_DYNAMIC_TYPE_FLOAT_BINARY16,
 100         SIDE_DYNAMIC_TYPE_FLOAT_BINARY32,
 101         SIDE_DYNAMIC_TYPE_FLOAT_BINARY64,
 102         SIDE_DYNAMIC_TYPE_FLOAT_BINARY128,
 103         SIDE_DYNAMIC_TYPE_STRING,
 104
 105         /* Compound types */
 106         SIDE_DYNAMIC_TYPE_STRUCT,
 107         SIDE_DYNAMIC_TYPE_STRUCT_VISITOR,
 108         SIDE_DYNAMIC_TYPE_VLA,
 109         SIDE_DYNAMIC_TYPE_VLA_VISITOR,
 110 };
 111
 112 enum side_attr_type {
 113         SIDE_ATTR_TYPE_BOOL,
 114         SIDE_ATTR_TYPE_U8,
 115         SIDE_ATTR_TYPE_U16,
 116         SIDE_ATTR_TYPE_U32,
 117         SIDE_ATTR_TYPE_U64,
 118         SIDE_ATTR_TYPE_S8,
 119         SIDE_ATTR_TYPE_S16,
 120         SIDE_ATTR_TYPE_S32,
 121         SIDE_ATTR_TYPE_S64,
 122         SIDE_ATTR_TYPE_FLOAT_BINARY16,
 123         SIDE_ATTR_TYPE_FLOAT_BINARY32,
 124         SIDE_ATTR_TYPE_FLOAT_BINARY64,
 125         SIDE_ATTR_TYPE_FLOAT_BINARY128,
 126         SIDE_ATTR_TYPE_STRING,
 127 };
 128
 129 enum side_loglevel {
 130         SIDE_LOGLEVEL_EMERG = 0,
 131         SIDE_LOGLEVEL_ALERT = 1,
 132         SIDE_LOGLEVEL_CRIT = 2,
 133         SIDE_LOGLEVEL_ERR = 3,
 134         SIDE_LOGLEVEL_WARNING = 4,
 135         SIDE_LOGLEVEL_NOTICE = 5,
 136         SIDE_LOGLEVEL_INFO = 6,
 137         SIDE_LOGLEVEL_DEBUG = 7,
 138 };
 139
 140 enum side_visitor_status {
 141         SIDE_VISITOR_STATUS_OK = 0,
 142         SIDE_VISITOR_STATUS_ERROR = -1,
 143 };
 144
 145 typedef enum side_visitor_status (*side_visitor)(
 146                 const struct side_tracer_visitor_ctx *tracer_ctx,
 147                 void *app_ctx);
 148 typedef enum side_visitor_status (*side_dynamic_struct_visitor)(
 149                 const struct side_tracer_dynamic_struct_visitor_ctx *tracer_ctx,
 150                 void *app_ctx);
 151 typedef enum side_visitor_status (*side_dynamic_vla_visitor)(
 152                 const struct side_tracer_dynamic_vla_visitor_ctx *tracer_ctx,
 153                 void *app_ctx);
 154
 155 struct side_attr_value {
 156         uint32_t type;  /* enum side_attr_type */
 157         union {
 158                 uint8_t side_bool;
 159                 uint8_t side_u8;
 160                 uint16_t side_u16;
 161                 uint32_t side_u32;
 162                 uint64_t side_u64;
 163                 int8_t side_s8;
 164                 int16_t side_s16;
 165                 int32_t side_s32;
 166                 int64_t side_s64;
 167 #if __HAVE_FLOAT16
 168                 _Float16 side_float_binary16;
 169 #endif
 170 #if __HAVE_FLOAT32
 171                 _Float32 side_float_binary32;
 172 #endif
 173 #if __HAVE_FLOAT64
 174                 _Float64 side_float_binary64;
 175 #endif
 176 #if __HAVE_FLOAT128
 177                 _Float128 side_float_binary128;
 178 #endif
 179                 const char *string;
 180         } u;
 181 };
 182
 183 /* User attributes. */
 184 struct side_attr {
 185         const char *key;
 186         const struct side_attr_value value;
 187 };
 188
 189 struct side_enum_mapping {
 190         int64_t range_begin;
 191         int64_t range_end;
 192         const char *label;
 193 };
 194
 195 struct side_enum_mappings {
 196         const struct side_enum_mapping *mappings;
 197         const struct side_attr *attr;
 198         uint32_t nr_mappings;
 199         uint32_t nr_attr;
 200 };
 201
 202 struct side_enum_bitmap_mapping {
 203         int64_t range_begin;
 204         int64_t range_end;
 205         const char *label;
 206 };
 207
 208 struct side_enum_bitmap_mappings {
 209         const struct side_enum_bitmap_mapping *mappings;
 210         const struct side_attr *attr;
 211         uint32_t nr_mappings;
 212         uint32_t nr_attr;
 213 };
 214
 215 struct side_type_struct {
 216         uint32_t nr_fields;
 217         uint32_t nr_attr;
 218         const struct side_event_field *fields;
 219         const struct side_attr *attr;
 220 };
 221
 222 struct side_type_description {
 223         uint32_t type;  /* enum side_type */
 224         union {
 225                 /* Basic types */
 226                 struct {
 227                         const struct side_attr *attr;
 228                         uint32_t nr_attr;
 229                 } side_basic;
 230
 231                 /* Compound types */
 232                 struct {
 233                         const struct side_type_description *elem_type;
 234                         const struct side_attr *attr;
 235                         uint32_t length;
 236                         uint32_t nr_attr;
 237                 } side_array;
 238                 struct {
 239                         const struct side_type_description *elem_type;
 240                         const struct side_attr *attr;
 241                         uint32_t nr_attr;
 242                 } side_vla;
 243                 struct {
 244                         const struct side_type_description *elem_type;
 245                         side_visitor visitor;
 246                         const struct side_attr *attr;
 247                         uint32_t nr_attr;
 248                 } side_vla_visitor;
 249                 const struct side_type_struct *side_struct;
 250
 251                 /* Enumeration types */
 252                 struct {
 253                         const struct side_type_description *elem_type;
 254                         const struct side_enum_mappings *mappings;
 255                 } side_enum;
 256                 struct {
 257                         const struct side_type_description *elem_type;
 258                         const struct side_enum_bitmap_mappings *mappings;
 259                 } side_enum_bitmap;
 260         } u;
 261 };
 262
 263 struct side_event_field {
 264         const char *field_name;
 265         struct side_type_description side_type;
 266 };
 267
 268 enum side_event_flags {
 269         SIDE_EVENT_FLAG_VARIADIC = (1 << 0),
 270 };
 271
 272 struct side_callback {
 273         union {
 274                 void (*call)(const struct side_event_description *desc,
 275                         const struct side_arg_vec_description *sav_desc,
 276                         void *priv);
 277                 void (*call_variadic)(const struct side_event_description *desc,
 278                         const struct side_arg_vec_description *sav_desc,
 279                         const struct side_arg_dynamic_event_struct *var_struct,
 280                         void *priv);
 281         } u;
 282         void *priv;
 283 };
 284
 285 struct side_callbacks {
 286         struct side_callback *cb;
 287         uint32_t nr_cb;
 288 };
 289
 290 struct side_event_description {
 291         uint32_t version;
 292         uint32_t *enabled;
 293         uint32_t loglevel;      /* enum side_loglevel */
 294         uint32_t nr_fields;
 295         uint32_t nr_attr;
 296         uint32_t _unused;
 297         uint64_t flags;
 298         const char *provider_name;
 299         const char *event_name;
 300         const struct side_event_field *fields;
 301         const struct side_attr *attr;
 302         struct side_callbacks *callbacks;
 303 };
 304
 305 struct side_arg_dynamic_vec {
 306         uint32_t dynamic_type;  /* enum side_dynamic_type */
 307         union {
 308                 /* Basic types */
 309                 struct {
 310                         const struct side_attr *attr;
 311                         uint32_t nr_attr;
 312                         union {
 313                                 uint8_t side_bool;
 314                                 uint8_t side_u8;
 315                                 uint16_t side_u16;
 316                                 uint32_t side_u32;
 317                                 uint64_t side_u64;
 318                                 int8_t side_s8;
 319                                 int16_t side_s16;
 320                                 int32_t side_s32;
 321                                 int64_t side_s64;
 322                                 uint8_t side_blob;
 323 #if __HAVE_FLOAT16
 324                                 _Float16 side_float_binary16;
 325 #endif
 326 #if __HAVE_FLOAT32
 327                                 _Float32 side_float_binary32;
 328 #endif
 329 #if __HAVE_FLOAT64
 330                                 _Float64 side_float_binary64;
 331 #endif
 332 #if __HAVE_FLOAT128
 333                                 _Float128 side_float_binary128;
 334 #endif
 335                                 const char *string;
 336                         } u;
 337                 } side_basic;
 338
 339                 /* Compound types */
 340                 const struct side_arg_dynamic_event_struct *side_dynamic_struct;
 341                 struct {
 342                         void *app_ctx;
 343                         side_dynamic_struct_visitor visitor;
 344                         const struct side_attr *attr;
 345                         uint32_t nr_attr;
 346                 } side_dynamic_struct_visitor;
 347                 const struct side_arg_dynamic_vec_vla *side_dynamic_vla;
 348                 struct {
 349                         void *app_ctx;
 350                         side_dynamic_vla_visitor visitor;
 351                         const struct side_attr *attr;
 352                         uint32_t nr_attr;
 353                 } side_dynamic_vla_visitor;
 354         } u;
 355 };
 356
 357 struct side_arg_dynamic_vec_vla {
 358         const struct side_arg_dynamic_vec *sav;
 359         const struct side_attr *attr;
 360         uint32_t len;
 361         uint32_t nr_attr;
 362 };
 363
 364 struct side_arg_dynamic_event_field {
 365         const char *field_name;
 366         const struct side_arg_dynamic_vec elem;
 367 };
 368
 369 struct side_arg_dynamic_event_struct {
 370         const struct side_arg_dynamic_event_field *fields;
 371         const struct side_attr *attr;
 372         uint32_t len;
 373         uint32_t nr_attr;
 374 };
 375
 376 struct side_arg_vec {
 377         enum side_type type;
 378         union {
 379                 /* Basic types */
 380                 uint8_t side_bool;
 381                 uint8_t side_u8;
 382                 uint16_t side_u16;
 383                 uint32_t side_u32;
 384                 uint64_t side_u64;
 385                 int8_t side_s8;
 386                 int16_t side_s16;
 387                 int32_t side_s32;
 388                 int64_t side_s64;
 389                 uint8_t side_blob;
 390 #if __HAVE_FLOAT16
 391                 _Float16 side_float_binary16;
 392 #endif
 393 #if __HAVE_FLOAT32
 394                 _Float32 side_float_binary32;
 395 #endif
 396 #if __HAVE_FLOAT64
 397                 _Float64 side_float_binary64;
 398 #endif
 399 #if __HAVE_FLOAT128
 400                 _Float128 side_float_binary128;
 401 #endif
 402                 const char *string;
 403
 404                 /* Compound types */
 405                 const struct side_arg_vec_description *side_struct;
 406                 const struct side_arg_vec_description *side_array;
 407                 const struct side_arg_vec_description *side_vla;
 408                 void *side_vla_app_visitor_ctx;
 409                 void *side_array_fixint;
 410                 struct {
 411                         void *p;
 412                         uint32_t length;
 413                 } side_vla_fixint;
 414
 415                 /* Dynamic type */
 416                 struct side_arg_dynamic_vec dynamic;
 417         } u;
 418 };
 419
 420 struct side_arg_vec_description {
 421         const struct side_arg_vec *sav;
 422         uint32_t len;
 423 };
 424
 425 /* The visitor pattern is a double-dispatch visitor. */
 426 struct side_tracer_visitor_ctx {
 427         enum side_visitor_status (*write_elem)(
 428                         const struct side_tracer_visitor_ctx *tracer_ctx,
 429                         const struct side_arg_vec *elem);
 430         void *priv;             /* Private tracer context. */
 431 };
 432
 433 struct side_tracer_dynamic_struct_visitor_ctx {
 434         enum side_visitor_status (*write_field)(
 435                         const struct side_tracer_dynamic_struct_visitor_ctx *tracer_ctx,
 436                         const struct side_arg_dynamic_event_field *dynamic_field);
 437         void *priv;             /* Private tracer context. */
 438 };
 439
 440 struct side_tracer_dynamic_vla_visitor_ctx {
 441         enum side_visitor_status (*write_elem)(
 442                         const struct side_tracer_dynamic_vla_visitor_ctx *tracer_ctx,
 443                         const struct side_arg_dynamic_vec *elem);
 444         void *priv;             /* Private tracer context. */
 445 };
 446
 447 /* Event and type attributes */
 448
 449 #define side_attr(_key, _value) \
 450         { \
 451                 .key = _key, \
 452                 .value = SIDE_PARAM(_value), \
 453         }
 454
 455 #define side_attr_list(...) \
 456         SIDE_COMPOUND_LITERAL(const struct side_attr, __VA_ARGS__)
 457
 458 #define side_attr_bool(_val)            { .type = SIDE_ATTR_TYPE_BOOL, .u = { .side_bool = !!(_val) } }
 459 #define side_attr_u8(_val)              { .type = SIDE_ATTR_TYPE_U8, .u = { .side_u8 = (_val) } }
 460 #define side_attr_u16(_val)             { .type = SIDE_ATTR_TYPE_U16, .u = { .side_u16 = (_val) } }
 461 #define side_attr_u32(_val)             { .type = SIDE_ATTR_TYPE_U32, .u = { .side_u32 = (_val) } }
 462 #define side_attr_u64(_val)             { .type = SIDE_ATTR_TYPE_U64, .u = { .side_u64 = (_val) } }
 463 #define side_attr_s8(_val)              { .type = SIDE_ATTR_TYPE_S8, .u = { .side_s8 = (_val) } }
 464 #define side_attr_s16(_val)             { .type = SIDE_ATTR_TYPE_S16, .u = { .side_s16 = (_val) } }
 465 #define side_attr_s32(_val)             { .type = SIDE_ATTR_TYPE_S32, .u = { .side_s32 = (_val) } }
 466 #define side_attr_s64(_val)             { .type = SIDE_ATTR_TYPE_S64, .u = { .side_s64 = (_val) } }
 467 #define side_attr_float_binary16(_val)  { .type = SIDE_ATTR_TYPE_FLOAT_BINARY16, .u = { .side_float_binary16 = (_val) } }
 468 #define side_attr_float_binary32(_val)  { .type = SIDE_ATTR_TYPE_FLOAT_BINARY32, .u = { .side_float_binary32 = (_val) } }
 469 #define side_attr_float_binary64(_val)  { .type = SIDE_ATTR_TYPE_FLOAT_BINARY64, .u = { .side_float_binary64 = (_val) } }
 470 #define side_attr_float_binary128(_val) { .type = SIDE_ATTR_TYPE_FLOAT_BINARY128, .u = { .side_float_binary128 = (_val) } }
 471 #define side_attr_string(_val)          { .type = SIDE_ATTR_TYPE_STRING, .u = { .string = (_val) } }
 472
 473 /* Static field definition */
 474
 475 #define _side_type_basic(_type, _attr) \
 476         { \
 477                 .type = _type, \
 478                 .u = { \
 479                         .side_basic = { \
 480                                 .attr = _attr, \
 481                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 482                         }, \
 483                 }, \
 484         }
 485
 486 #define side_type_bool(_attr)                           _side_type_basic(SIDE_TYPE_BOOL, SIDE_PARAM(_attr))
 487 #define side_type_u8(_attr)                             _side_type_basic(SIDE_TYPE_U8, SIDE_PARAM(_attr))
 488 #define side_type_u16(_attr)                            _side_type_basic(SIDE_TYPE_U16, SIDE_PARAM(_attr))
 489 #define side_type_u32(_attr)                            _side_type_basic(SIDE_TYPE_U32, SIDE_PARAM(_attr))
 490 #define side_type_u64(_attr)                            _side_type_basic(SIDE_TYPE_U64, SIDE_PARAM(_attr))
 491 #define side_type_s8(_attr)                             _side_type_basic(SIDE_TYPE_S8, SIDE_PARAM(_attr))
 492 #define side_type_s16(_attr)                            _side_type_basic(SIDE_TYPE_S16, SIDE_PARAM(_attr))
 493 #define side_type_s32(_attr)                            _side_type_basic(SIDE_TYPE_S32, SIDE_PARAM(_attr))
 494 #define side_type_s64(_attr)                            _side_type_basic(SIDE_TYPE_S64, SIDE_PARAM(_attr))
 495 #define side_type_blob(_attr)                           _side_type_basic(SIDE_TYPE_BLOB, SIDE_PARAM(_attr))
 496 #define side_type_float_binary16(_attr)                 _side_type_basic(SIDE_TYPE_FLOAT_BINARY16, SIDE_PARAM(_attr))
 497 #define side_type_float_binary32(_attr)                 _side_type_basic(SIDE_TYPE_FLOAT_BINARY32, SIDE_PARAM(_attr))
 498 #define side_type_float_binary64(_attr)                 _side_type_basic(SIDE_TYPE_FLOAT_BINARY64, SIDE_PARAM(_attr))
 499 #define side_type_float_binary128(_attr)                _side_type_basic(SIDE_TYPE_FLOAT_BINARY128, SIDE_PARAM(_attr))
 500 #define side_type_string(_attr)                         _side_type_basic(SIDE_TYPE_STRING, SIDE_PARAM(_attr))
 501 #define side_type_dynamic(_attr)                        _side_type_basic(SIDE_TYPE_DYNAMIC, SIDE_PARAM(_attr))
 502
 503 #define _side_field(_name, _type) \
 504         { \
 505                 .field_name = _name, \
 506                 .side_type = _type, \
 507         }
 508
 509 #define side_field_bool(_name, _attr)                   _side_field(_name, side_type_bool(SIDE_PARAM(_attr)))
 510 #define side_field_u8(_name, _attr)                     _side_field(_name, side_type_u8(SIDE_PARAM(_attr)))
 511 #define side_field_u16(_name, _attr)                    _side_field(_name, side_type_u16(SIDE_PARAM(_attr)))
 512 #define side_field_u32(_name, _attr)                    _side_field(_name, side_type_u32(SIDE_PARAM(_attr)))
 513 #define side_field_u64(_name, _attr)                    _side_field(_name, side_type_u64(SIDE_PARAM(_attr)))
 514 #define side_field_s8(_name, _attr)                     _side_field(_name, side_type_s8(SIDE_PARAM(_attr)))
 515 #define side_field_s16(_name, _attr)                    _side_field(_name, side_type_s16(SIDE_PARAM(_attr)))
 516 #define side_field_s32(_name, _attr)                    _side_field(_name, side_type_s32(SIDE_PARAM(_attr)))
 517 #define side_field_s64(_name, _attr)                    _side_field(_name, side_type_s64(SIDE_PARAM(_attr)))
 518 #define side_field_blob(_name, _attr)                   _side_field(_name, side_type_blob(SIDE_PARAM(_attr)))
 519 #define side_field_float_binary16(_name, _attr)         _side_field(_name, side_type_float_binary16(SIDE_PARAM(_attr)))
 520 #define side_field_float_binary32(_name, _attr)         _side_field(_name, side_type_float_binary32(SIDE_PARAM(_attr)))
 521 #define side_field_float_binary64(_name, _attr)         _side_field(_name, side_type_float_binary64(SIDE_PARAM(_attr)))
 522 #define side_field_float_binary128(_name, _attr)        _side_field(_name, side_type_float_binary128(SIDE_PARAM(_attr)))
 523 #define side_field_string(_name, _attr)                 _side_field(_name, side_type_string(SIDE_PARAM(_attr)))
 524 #define side_field_dynamic(_name, _attr)                _side_field(_name, side_type_dynamic(SIDE_PARAM(_attr)))
 525
 526 #define side_type_enum(_elem_type, _mappings) \
 527         { \
 528                 .type = SIDE_TYPE_ENUM, \
 529                 .u = { \
 530                         .side_enum = { \
 531                                 .elem_type = _elem_type, \
 532                                 .mappings = _mappings, \
 533                         }, \
 534                 }, \
 535         }
 536 #define side_field_enum(_name, _elem_type, _mappings) \
 537         _side_field(_name, side_type_enum(SIDE_PARAM(_elem_type), SIDE_PARAM(_mappings)))
 538
 539 #define side_type_enum_bitmap(_elem_type, _mappings) \
 540         { \
 541                 .type = SIDE_TYPE_ENUM_BITMAP, \
 542                 .u = { \
 543                         .side_enum_bitmap = { \
 544                                 .elem_type = _elem_type, \
 545                                 .mappings = _mappings, \
 546                         }, \
 547                 }, \
 548         }
 549 #define side_field_enum_bitmap(_name, _elem_type, _mappings) \
 550         _side_field(_name, side_type_enum_bitmap(SIDE_PARAM(_elem_type), SIDE_PARAM(_mappings)))
 551
 552 #define side_type_struct(_struct) \
 553         { \
 554                 .type = SIDE_TYPE_STRUCT, \
 555                 .u = { \
 556                         .side_struct = _struct, \
 557                 }, \
 558         }
 559 #define side_field_struct(_name, _struct) \
 560         _side_field(_name, side_type_struct(SIDE_PARAM(_struct)))
 561
 562 #define _side_type_struct_define(_fields, _attr) \
 563         { \
 564                 .nr_fields = SIDE_ARRAY_SIZE(SIDE_PARAM(_fields)), \
 565                 .nr_attr  = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 566                 .fields = _fields, \
 567                 .attr = _attr, \
 568         }
 569
 570 #define side_define_struct(_identifier, _fields, _attr) \
 571         const struct side_type_struct _identifier = _side_type_struct_define(SIDE_PARAM(_fields), SIDE_PARAM(_attr))
 572
 573 #define side_struct_literal(_fields, _attr) \
 574         SIDE_COMPOUND_LITERAL(const struct side_type_struct, \
 575                 _side_type_struct_define(SIDE_PARAM(_fields), SIDE_PARAM(_attr)))
 576
 577 #define side_type_array(_elem_type, _length, _attr) \
 578         { \
 579                 .type = SIDE_TYPE_ARRAY, \
 580                 .u = { \
 581                         .side_array = { \
 582                                 .elem_type = _elem_type, \
 583                                 .attr = _attr, \
 584                                 .length = _length, \
 585                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 586                         }, \
 587                 }, \
 588         }
 589 #define side_field_array(_name, _elem_type, _length, _attr) \
 590         _side_field(_name, side_type_array(SIDE_PARAM(_elem_type), _length, SIDE_PARAM(_attr)))
 591
 592 #define side_type_vla(_elem_type, _attr) \
 593         { \
 594                 .type = SIDE_TYPE_VLA, \
 595                 .u = { \
 596                         .side_vla = { \
 597                                 .elem_type = _elem_type, \
 598                                 .attr = _attr, \
 599                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 600                         }, \
 601                 }, \
 602         }
 603 #define side_field_vla(_name, _elem_type, _attr) \
 604         _side_field(_name, side_type_vla(SIDE_PARAM(_elem_type), SIDE_PARAM(_attr)))
 605
 606 #define side_type_vla_visitor(_elem_type, _visitor, _attr) \
 607         { \
 608                 .type = SIDE_TYPE_VLA_VISITOR, \
 609                 .u = { \
 610                         .side_vla_visitor = { \
 611                                 .elem_type = SIDE_PARAM(_elem_type), \
 612                                 .visitor = _visitor, \
 613                                 .attr = _attr, \
 614                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 615                         }, \
 616                 }, \
 617         }
 618 #define side_field_vla_visitor(_name, _elem_type, _visitor, _attr) \
 619         _side_field(_name, side_type_vla_visitor(SIDE_PARAM(_elem_type), _visitor, SIDE_PARAM(_attr)))
 620
 621 #define side_elem(...) \
 622         SIDE_COMPOUND_LITERAL(const struct side_type_description, __VA_ARGS__)
 623
 624 #define side_field_list(...) \
 625         SIDE_COMPOUND_LITERAL(const struct side_event_field, __VA_ARGS__)
 626
 627 /* Static field arguments */
 628
 629 #define side_arg_bool(_val)             { .type = SIDE_TYPE_BOOL, .u = { .side_bool = !!(_val) } }
 630 #define side_arg_u8(_val)               { .type = SIDE_TYPE_U8, .u = { .side_u8 = (_val) } }
 631 #define side_arg_u16(_val)              { .type = SIDE_TYPE_U16, .u = { .side_u16 = (_val) } }
 632 #define side_arg_u32(_val)              { .type = SIDE_TYPE_U32, .u = { .side_u32 = (_val) } }
 633 #define side_arg_u64(_val)              { .type = SIDE_TYPE_U64, .u = { .side_u64 = (_val) } }
 634 #define side_arg_s8(_val)               { .type = SIDE_TYPE_S8, .u = { .side_s8 = (_val) } }
 635 #define side_arg_s16(_val)              { .type = SIDE_TYPE_S16, .u = { .side_s16 = (_val) } }
 636 #define side_arg_s32(_val)              { .type = SIDE_TYPE_S32, .u = { .side_s32 = (_val) } }
 637 #define side_arg_s64(_val)              { .type = SIDE_TYPE_S64, .u = { .side_s64 = (_val) } }
 638 #define side_arg_blob(_val)             { .type = SIDE_TYPE_BLOB, .u = { .side_blob = (_val) } }
 639 #define side_arg_enum_bitmap8(_val)     { .type = SIDE_TYPE_ENUM_BITMAP8, .u = { .side_u8 = (_val) } }
 640 #define side_arg_enum_bitmap16(_val)    { .type = SIDE_TYPE_ENUM_BITMAP16, .u = { .side_u16 = (_val) } }
 641 #define side_arg_enum_bitmap32(_val)    { .type = SIDE_TYPE_ENUM_BITMAP32, .u = { .side_u32 = (_val) } }
 642 #define side_arg_enum_bitmap64(_val)    { .type = SIDE_TYPE_ENUM_BITMAP64, .u = { .side_u64 = (_val) } }
 643 #define side_arg_enum_bitmap_array(_side_type)  { .type = SIDE_TYPE_ENUM_BITMAP_ARRAY, .u = { .side_array = (_side_type) } }
 644 #define side_arg_enum_bitmap_vla(_side_type)    { .type = SIDE_TYPE_ENUM_BITMAP_VLA, .u = { .side_vla = (_side_type) } }
 645 #define side_arg_float_binary16(_val)   { .type = SIDE_TYPE_FLOAT_BINARY16, .u = { .side_float_binary16 = (_val) } }
 646 #define side_arg_float_binary32(_val)   { .type = SIDE_TYPE_FLOAT_BINARY32, .u = { .side_float_binary32 = (_val) } }
 647 #define side_arg_float_binary64(_val)   { .type = SIDE_TYPE_FLOAT_BINARY64, .u = { .side_float_binary64 = (_val) } }
 648 #define side_arg_float_binary128(_val)  { .type = SIDE_TYPE_FLOAT_BINARY128, .u = { .side_float_binary128 = (_val) } }
 649
 650 #define side_arg_string(_val)           { .type = SIDE_TYPE_STRING, .u = { .string = (_val) } }
 651 #define side_arg_struct(_side_type)     { .type = SIDE_TYPE_STRUCT, .u = { .side_struct = (_side_type) } }
 652 #define side_arg_array(_side_type)      { .type = SIDE_TYPE_ARRAY, .u = { .side_array = (_side_type) } }
 653 #define side_arg_vla(_side_type)        { .type = SIDE_TYPE_VLA, .u = { .side_vla = (_side_type) } }
 654 #define side_arg_vla_visitor(_ctx)      { .type = SIDE_TYPE_VLA_VISITOR, .u = { .side_vla_app_visitor_ctx = (_ctx) } }
 655
 656 #define side_arg_array_u8(_ptr)         { .type = SIDE_TYPE_ARRAY_U8, .u = { .side_array_fixint = (_ptr) } }
 657 #define side_arg_array_u16(_ptr)        { .type = SIDE_TYPE_ARRAY_U16, .u = { .side_array_fixint = (_ptr) } }
 658 #define side_arg_array_u32(_ptr)        { .type = SIDE_TYPE_ARRAY_U32, .u = { .side_array_fixint = (_ptr) } }
 659 #define side_arg_array_u64(_ptr)        { .type = SIDE_TYPE_ARRAY_U64, .u = { .side_array_fixint = (_ptr) } }
 660 #define side_arg_array_s8(_ptr)         { .type = SIDE_TYPE_ARRAY_S8, .u = { .side_array_fixint = (_ptr) } }
 661 #define side_arg_array_s16(_ptr)        { .type = SIDE_TYPE_ARRAY_S16, .u = { .side_array_fixint  = (_ptr) } }
 662 #define side_arg_array_s32(_ptr)        { .type = SIDE_TYPE_ARRAY_S32, .u = { .side_array_fixint = (_ptr) } }
 663 #define side_arg_array_s64(_ptr)        { .type = SIDE_TYPE_ARRAY_S64, .u = { .side_array_fixint = (_ptr) } }
 664 #define side_arg_array_blob(_ptr)       { .type = SIDE_TYPE_ARRAY_BLOB, .u = { .side_array_fixint = (_ptr) } }
 665
 666 #define side_arg_vla_u8(_ptr, _length)  { .type = SIDE_TYPE_VLA_U8, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } }
 667 #define side_arg_vla_u16(_ptr, _length) { .type = SIDE_TYPE_VLA_U16, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 668 #define side_arg_vla_u32(_ptr, _length) { .type = SIDE_TYPE_VLA_U32, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 669 #define side_arg_vla_u64(_ptr, _length) { .type = SIDE_TYPE_VLA_U64, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 670 #define side_arg_vla_s8(_ptr, _length)  { .type = SIDE_TYPE_VLA_S8, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 671 #define side_arg_vla_s16(_ptr, _length) { .type = SIDE_TYPE_VLA_S16, .u = { .side_vla_fixint  = { .p = (_ptr), .length = (_length) } } }
 672 #define side_arg_vla_s32(_ptr, _length) { .type = SIDE_TYPE_VLA_S32, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 673 #define side_arg_vla_s64(_ptr, _length) { .type = SIDE_TYPE_VLA_S64, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 674 #define side_arg_vla_blob(_ptr, _length) { .type = SIDE_TYPE_VLA_BLOB, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 675
 676 #define side_arg_dynamic(_dynamic_arg_type) \
 677         { \
 678                 .type = SIDE_TYPE_DYNAMIC, \
 679                 .u = { \
 680                         .dynamic = _dynamic_arg_type, \
 681                 }, \
 682         }
 683
 684 /* Dynamic field arguments */
 685
 686 #define side_arg_dynamic_null(_attr) \
 687         { \
 688                 .dynamic_type = SIDE_DYNAMIC_TYPE_NULL, \
 689                 .u = { \
 690                         .side_basic = { \
 691                                 .attr = _attr, \
 692                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 693                         }, \
 694                 }, \
 695         }
 696
 697 #define side_arg_dynamic_bool(_val, _attr) \
 698         { \
 699                 .dynamic_type = SIDE_DYNAMIC_TYPE_BOOL, \
 700                 .u = { \
 701                         .side_basic = { \
 702                                 .attr = _attr, \
 703                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 704                                 .u = { \
 705                                         .side_bool = !!(_val), \
 706                                 }, \
 707                         }, \
 708                 }, \
 709         }
 710
 711 #define side_arg_dynamic_u8(_val, _attr) \
 712         { \
 713                 .dynamic_type = SIDE_DYNAMIC_TYPE_U8, \
 714                 .u = { \
 715                         .side_basic = { \
 716                                 .attr = _attr, \
 717                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 718                                 .u = { \
 719                                         .side_u8 = (_val), \
 720                                 }, \
 721                         }, \
 722                 }, \
 723         }
 724 #define side_arg_dynamic_u16(_val, _attr) \
 725         { \
 726                 .dynamic_type = SIDE_DYNAMIC_TYPE_U16, \
 727                 .u = { \
 728                         .side_basic = { \
 729                                 .attr = _attr, \
 730                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 731                                 .u = { \
 732                                         .side_u16 = (_val), \
 733                                 }, \
 734                         }, \
 735                 }, \
 736         }
 737 #define side_arg_dynamic_u32(_val, _attr) \
 738         { \
 739                 .dynamic_type = SIDE_DYNAMIC_TYPE_U32, \
 740                 .u = { \
 741                         .side_basic = { \
 742                                 .attr = _attr, \
 743                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 744                                 .u = { \
 745                                         .side_u32 = (_val), \
 746                                 }, \
 747                         }, \
 748                 }, \
 749         }
 750 #define side_arg_dynamic_u64(_val, _attr) \
 751         { \
 752                 .dynamic_type = SIDE_DYNAMIC_TYPE_U64, \
 753                 .u = { \
 754                         .side_basic = { \
 755                                 .attr = _attr, \
 756                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 757                                 .u = { \
 758                                         .side_u64 = (_val), \
 759                                 }, \
 760                         }, \
 761                 }, \
 762         }
 763
 764 #define side_arg_dynamic_s8(_val, _attr) \
 765         { \
 766                 .dynamic_type = SIDE_DYNAMIC_TYPE_S8, \
 767                 .u = { \
 768                         .side_basic = { \
 769                                 .attr = _attr, \
 770                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 771                                 .u = { \
 772                                         .side_s8 = (_val), \
 773                                 }, \
 774                         }, \
 775                 }, \
 776         }
 777 #define side_arg_dynamic_s16(_val, _attr) \
 778         { \
 779                 .dynamic_type = SIDE_DYNAMIC_TYPE_S16, \
 780                 .u = { \
 781                         .side_basic = { \
 782                                 .attr = _attr, \
 783                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 784                                 .u = { \
 785                                         .side_s16 = (_val), \
 786                                 }, \
 787                         }, \
 788                 }, \
 789         }
 790 #define side_arg_dynamic_s32(_val, _attr) \
 791         { \
 792                 .dynamic_type = SIDE_DYNAMIC_TYPE_S32, \
 793                 .u = { \
 794                         .side_basic = { \
 795                                 .attr = _attr, \
 796                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 797                                 .u = { \
 798                                         .side_s32 = (_val), \
 799                                 }, \
 800                         }, \
 801                 }, \
 802         }
 803 #define side_arg_dynamic_s64(_val, _attr) \
 804         { \
 805                 .dynamic_type = SIDE_DYNAMIC_TYPE_S64, \
 806                 .u = { \
 807                         .side_basic = { \
 808                                 .attr = _attr, \
 809                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 810                                 .u = { \
 811                                         .side_s64 = (_val), \
 812                                 }, \
 813                         }, \
 814                 }, \
 815         }
 816 #define side_arg_dynamic_blob(_val, _attr) \
 817         { \
 818                 .dynamic_type = SIDE_DYNAMIC_TYPE_BLOB, \
 819                 .u = { \
 820                         .side_basic = { \
 821                                 .attr = _attr, \
 822                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 823                                 .u = { \
 824                                         .side_blob = (_val), \
 825                                 }, \
 826                         }, \
 827                 }, \
 828         }
 829
 830 #define side_arg_dynamic_float_binary16(_val, _attr) \
 831         { \
 832                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY16, \
 833                 .u = { \
 834                         .side_basic = { \
 835                                 .attr = _attr, \
 836                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 837                                 .u = { \
 838                                         .side_float_binary16 = (_val), \
 839                                 }, \
 840                         }, \
 841                 }, \
 842         }
 843 #define side_arg_dynamic_float_binary32(_val, _attr) \
 844         { \
 845                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY32, \
 846                 .u = { \
 847                         .side_basic = { \
 848                                 .attr = _attr, \
 849                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 850                                 .u = { \
 851                                         .side_float_binary32 = (_val), \
 852                                 }, \
 853                         }, \
 854                 }, \
 855         }
 856 #define side_arg_dynamic_float_binary64(_val, _attr) \
 857         { \
 858                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY64, \
 859                 .u = { \
 860                         .side_basic = { \
 861                                 .attr = _attr, \
 862                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 863                                 .u = { \
 864                                         .side_float_binary64 = (_val), \
 865                                 }, \
 866                         }, \
 867                 }, \
 868         }
 869 #define side_arg_dynamic_float_binary128(_val, _attr) \
 870         { \
 871                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY128, \
 872                 .u = { \
 873                         .side_basic = { \
 874                                 .attr = _attr, \
 875                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 876                                 .u = { \
 877                                         .side_float_binary128 = (_val), \
 878                                 }, \
 879                         }, \
 880                 }, \
 881         }
 882
 883 #define side_arg_dynamic_string(_val, _attr) \
 884         { \
 885                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRING, \
 886                 .u = { \
 887                         .side_basic = { \
 888                                 .attr = _attr, \
 889                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 890                                 .u = { \
 891                                         .string = (_val), \
 892                                 }, \
 893                         }, \
 894                 }, \
 895         }
 896
 897 #define side_arg_dynamic_vla(_vla) \
 898         { \
 899                 .dynamic_type = SIDE_DYNAMIC_TYPE_VLA, \
 900                 .u = { \
 901                         .side_dynamic_vla = (_vla), \
 902                 }, \
 903         }
 904
 905 #define side_arg_dynamic_vla_visitor(_dynamic_vla_visitor, _ctx, _attr) \
 906         { \
 907                 .dynamic_type = SIDE_DYNAMIC_TYPE_VLA_VISITOR, \
 908                 .u = { \
 909                         .side_dynamic_vla_visitor = { \
 910                                 .app_ctx = _ctx, \
 911                                 .visitor = _dynamic_vla_visitor, \
 912                                 .attr = _attr, \
 913                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 914                         }, \
 915                 }, \
 916         }
 917
 918 #define side_arg_dynamic_struct(_struct) \
 919         { \
 920                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRUCT, \
 921                 .u = { \
 922                         .side_dynamic_struct = (_struct), \
 923                 }, \
 924         }
 925
 926 #define side_arg_dynamic_struct_visitor(_dynamic_struct_visitor, _ctx, _attr) \
 927         { \
 928                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRUCT_VISITOR, \
 929                 .u = { \
 930                         .side_dynamic_struct_visitor = { \
 931                                 .app_ctx = _ctx, \
 932                                 .visitor = _dynamic_struct_visitor, \
 933                                 .attr = _attr, \
 934                                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 935                         }, \
 936                 }, \
 937         }
 938
 939 #define side_arg_dynamic_define_vec(_identifier, _sav, _attr) \
 940         const struct side_arg_dynamic_vec _identifier##_vec[] = { _sav }; \
 941         const struct side_arg_dynamic_vec_vla _identifier = { \
 942                 .sav = _identifier##_vec, \
 943                 .attr = _attr, \
 944                 .len = SIDE_ARRAY_SIZE(_identifier##_vec), \
 945                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 946         }
 947
 948 #define side_arg_dynamic_define_struct(_identifier, _struct_fields, _attr) \
 949         const struct side_arg_dynamic_event_field _identifier##_fields[] = { _struct_fields }; \
 950         const struct side_arg_dynamic_event_struct _identifier = { \
 951                 .fields = _identifier##_fields, \
 952                 .attr = _attr, \
 953                 .len = SIDE_ARRAY_SIZE(_identifier##_fields), \
 954                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 955         }
 956
 957 #define side_arg_define_vec(_identifier, _sav) \
 958         const struct side_arg_vec _identifier##_vec[] = { _sav }; \
 959         const struct side_arg_vec_description _identifier = { \
 960                 .sav = _identifier##_vec, \
 961                 .len = SIDE_ARRAY_SIZE(_identifier##_vec), \
 962         }
 963
 964 #define side_arg_dynamic_field(_name, _elem) \
 965         { \
 966                 .field_name = _name, \
 967                 .elem = _elem, \
 968         }
 969
 970 #define side_arg_list(...)      __VA_ARGS__
 971
 972 #define side_define_enum(_identifier, _mappings, _attr) \
 973         const struct side_enum_mappings _identifier = { \
 974                 .mappings = _mappings, \
 975                 .attr = _attr, \
 976                 .nr_mappings = SIDE_ARRAY_SIZE(SIDE_PARAM(_mappings)), \
 977                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 978         }
 979
 980 #define side_enum_mapping_list(...) \
 981         SIDE_COMPOUND_LITERAL(const struct side_enum_mapping, __VA_ARGS__)
 982
 983 #define side_enum_mapping_range(_label, _begin, _end) \
 984         { \
 985                 .range_begin = _begin, \
 986                 .range_end = _end, \
 987                 .label = _label, \
 988         }
 989
 990 #define side_enum_mapping_value(_label, _value) \
 991         { \
 992                 .range_begin = _value, \
 993                 .range_end = _value, \
 994                 .label = _label, \
 995         }
 996
 997 #define side_define_enum_bitmap(_identifier, _mappings, _attr) \
 998         const struct side_enum_bitmap_mappings _identifier = { \
 999                 .mappings = _mappings, \
1000                 .attr = _attr, \
1001                 .nr_mappings = SIDE_ARRAY_SIZE(SIDE_PARAM(_mappings)), \
1002                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1003         }
1004
1005 #define side_enum_bitmap_mapping_list(...) \
1006         SIDE_COMPOUND_LITERAL(const struct side_enum_bitmap_mapping, __VA_ARGS__)
1007
1008 #define side_enum_bitmap_mapping_range(_label, _begin, _end) \
1009         { \
1010                 .range_begin = _begin, \
1011                 .range_end = _end, \
1012                 .label = _label, \
1013         }
1014
1015 #define side_enum_bitmap_mapping_value(_label, _value) \
1016         { \
1017                 .range_begin = _value, \
1018                 .range_end = _value, \
1019                 .label = _label, \
1020         }
1021
1022 #define side_event_cond(_desc) if (side_unlikely(_desc##_enabled))
1023
1024 #define side_event_call(_desc, _sav) \
1025         { \
1026                 const struct side_arg_vec side_sav[] = { _sav }; \
1027                 const struct side_arg_vec_description sav_desc = { \
1028                         .sav = side_sav, \
1029                         .len = SIDE_ARRAY_SIZE(side_sav), \
1030                 }; \
1031                 side_call(&(_desc), &sav_desc); \
1032         }
1033
1034 #define side_event(_desc, _sav) \
1035         side_event_cond(_desc) \
1036                 side_event_call(_desc, SIDE_PARAM(_sav))
1037
1038 #define side_event_call_variadic(_desc, _sav, _var_fields, _attr) \
1039         { \
1040                 const struct side_arg_vec side_sav[] = { _sav }; \
1041                 const struct side_arg_vec_description sav_desc = { \
1042                         .sav = side_sav, \
1043                         .len = SIDE_ARRAY_SIZE(side_sav), \
1044                 }; \
1045                 const struct side_arg_dynamic_event_field side_fields[] = { _var_fields }; \
1046                 const struct side_arg_dynamic_event_struct var_struct = { \
1047                         .fields = side_fields, \
1048                         .attr = _attr, \
1049                         .len = SIDE_ARRAY_SIZE(side_fields), \
1050                         .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1051                 }; \
1052                 side_call_variadic(&(_desc), &sav_desc, &var_struct); \
1053         }
1054
1055 #define side_event_variadic(_desc, _sav, _var, _attr) \
1056         side_event_cond(_desc) \
1057                 side_event_call_variadic(_desc, SIDE_PARAM(_sav), SIDE_PARAM(_var), SIDE_PARAM(_attr))
1058
1059 #define _side_define_event(_identifier, _provider, _event, _loglevel, _fields, _attr, _flags) \
1060         uint32_t _identifier##_enabled __attribute__((section("side_event_enable"))); \
1061         struct side_callbacks _identifier##_callbacks __attribute__((section("side_event_callbacks"))); \
1062         const struct side_event_description _identifier = { \
1063                 .version = 0, \
1064                 .enabled = &(_identifier##_enabled), \
1065                 .loglevel = _loglevel, \
1066                 .nr_fields = SIDE_ARRAY_SIZE(SIDE_PARAM(_fields)), \
1067                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
1068                 .flags = (_flags), \
1069                 .provider_name = _provider, \
1070                 .event_name = _event, \
1071                 .fields = _fields, \
1072                 .attr = _attr, \
1073                 .callbacks = &(_identifier##_callbacks), \
1074         }; \
1075         const struct side_event_description *_identifier##_ptr \
1076                 __attribute__((section("side_event_description"), used)) = &(_identifier);
1077
1078 #define side_define_event(_identifier, _provider, _event, _loglevel, _fields, _attr) \
1079         _side_define_event(_identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
1080                         SIDE_PARAM(_attr), 0)
1081
1082 #define side_define_event_variadic(_identifier, _provider, _event, _loglevel, _fields, _attr) \
1083         _side_define_event(_identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
1084                         SIDE_PARAM(_attr), SIDE_EVENT_FLAG_VARIADIC)
1085
1086 #define side_declare_event(_identifier) \
1087         struct side_event_description _identifier
1088
1089 void side_call(const struct side_event_description *desc,
1090         const struct side_arg_vec_description *sav_desc);
1091 void side_call_variadic(const struct side_event_description *desc,
1092         const struct side_arg_vec_description *sav_desc,
1093         const struct side_arg_dynamic_event_struct *var_struct);
1094
1095 #endif /* _SIDE_TRACE_H */