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 struct side_arg_vec;
  19 struct side_arg_vec_description;
  20 struct side_arg_dynamic_vec;
  21 struct side_arg_dynamic_vec_vla;
  22 struct side_type_description;
  23 struct side_event_field;
  24 struct side_tracer_visitor_ctx;
  25 struct side_tracer_dynamic_struct_visitor_ctx;
  26 struct side_tracer_dynamic_vla_visitor_ctx;
  27
  28 enum side_type {
  29         SIDE_TYPE_BOOL,
  30
  31         SIDE_TYPE_U8,
  32         SIDE_TYPE_U16,
  33         SIDE_TYPE_U32,
  34         SIDE_TYPE_U64,
  35         SIDE_TYPE_S8,
  36         SIDE_TYPE_S16,
  37         SIDE_TYPE_S32,
  38         SIDE_TYPE_S64,
  39
  40         SIDE_TYPE_FLOAT_BINARY16,
  41         SIDE_TYPE_FLOAT_BINARY32,
  42         SIDE_TYPE_FLOAT_BINARY64,
  43         SIDE_TYPE_FLOAT_BINARY128,
  44
  45         SIDE_TYPE_STRING,
  46
  47         SIDE_TYPE_STRUCT,
  48         SIDE_TYPE_ARRAY,
  49         SIDE_TYPE_VLA,
  50         SIDE_TYPE_VLA_VISITOR,
  51
  52         SIDE_TYPE_ARRAY_U8,
  53         SIDE_TYPE_ARRAY_U16,
  54         SIDE_TYPE_ARRAY_U32,
  55         SIDE_TYPE_ARRAY_U64,
  56         SIDE_TYPE_ARRAY_S8,
  57         SIDE_TYPE_ARRAY_S16,
  58         SIDE_TYPE_ARRAY_S32,
  59         SIDE_TYPE_ARRAY_S64,
  60
  61         SIDE_TYPE_VLA_U8,
  62         SIDE_TYPE_VLA_U16,
  63         SIDE_TYPE_VLA_U32,
  64         SIDE_TYPE_VLA_U64,
  65         SIDE_TYPE_VLA_S8,
  66         SIDE_TYPE_VLA_S16,
  67         SIDE_TYPE_VLA_S32,
  68         SIDE_TYPE_VLA_S64,
  69
  70         SIDE_TYPE_DYNAMIC,
  71 };
  72
  73 enum side_dynamic_type {
  74         SIDE_DYNAMIC_TYPE_NULL,
  75
  76         SIDE_DYNAMIC_TYPE_BOOL,
  77
  78         SIDE_DYNAMIC_TYPE_U8,
  79         SIDE_DYNAMIC_TYPE_U16,
  80         SIDE_DYNAMIC_TYPE_U32,
  81         SIDE_DYNAMIC_TYPE_U64,
  82         SIDE_DYNAMIC_TYPE_S8,
  83         SIDE_DYNAMIC_TYPE_S16,
  84         SIDE_DYNAMIC_TYPE_S32,
  85         SIDE_DYNAMIC_TYPE_S64,
  86
  87         SIDE_DYNAMIC_TYPE_FLOAT_BINARY16,
  88         SIDE_DYNAMIC_TYPE_FLOAT_BINARY32,
  89         SIDE_DYNAMIC_TYPE_FLOAT_BINARY64,
  90         SIDE_DYNAMIC_TYPE_FLOAT_BINARY128,
  91
  92         SIDE_DYNAMIC_TYPE_STRING,
  93
  94         SIDE_DYNAMIC_TYPE_STRUCT,
  95         SIDE_DYNAMIC_TYPE_STRUCT_VISITOR,
  96
  97         SIDE_DYNAMIC_TYPE_VLA,
  98         SIDE_DYNAMIC_TYPE_VLA_VISITOR,
  99 };
 100
 101 enum side_loglevel {
 102         SIDE_LOGLEVEL_EMERG = 0,
 103         SIDE_LOGLEVEL_ALERT = 1,
 104         SIDE_LOGLEVEL_CRIT = 2,
 105         SIDE_LOGLEVEL_ERR = 3,
 106         SIDE_LOGLEVEL_WARNING = 4,
 107         SIDE_LOGLEVEL_NOTICE = 5,
 108         SIDE_LOGLEVEL_INFO = 6,
 109         SIDE_LOGLEVEL_DEBUG = 7,
 110 };
 111
 112 enum side_visitor_status {
 113         SIDE_VISITOR_STATUS_OK = 0,
 114         SIDE_VISITOR_STATUS_ERROR = -1,
 115 };
 116
 117 typedef enum side_visitor_status (*side_visitor)(
 118                 const struct side_tracer_visitor_ctx *tracer_ctx,
 119                 void *app_ctx);
 120 typedef enum side_visitor_status (*side_dynamic_struct_visitor)(
 121                 const struct side_tracer_dynamic_struct_visitor_ctx *tracer_ctx,
 122                 void *app_ctx);
 123 typedef enum side_visitor_status (*side_dynamic_vla_visitor)(
 124                 const struct side_tracer_dynamic_vla_visitor_ctx *tracer_ctx,
 125                 void *app_ctx);
 126
 127 /* User attributes. */
 128 struct side_attr {
 129         const char *key;
 130         const char *value;
 131 };
 132
 133 struct side_type_description {
 134         uint32_t type;  /* enum side_type */
 135         uint32_t nr_attr;
 136         const struct side_attr *attr;
 137         union {
 138                 struct {
 139                         uint32_t nr_fields;
 140                         const struct side_event_field *fields;
 141                 } side_struct;
 142                 struct {
 143                         uint32_t length;
 144                         const struct side_type_description *elem_type;
 145                 } side_array;
 146                 struct {
 147                         const struct side_type_description *elem_type;
 148                 } side_vla;
 149                 struct {
 150                         const struct side_type_description *elem_type;
 151                         side_visitor visitor;
 152                 } side_vla_visitor;
 153         } u;
 154 };
 155
 156 struct side_event_field {
 157         const char *field_name;
 158         struct side_type_description side_type;
 159 };
 160
 161 enum side_event_flags {
 162         SIDE_EVENT_FLAG_VARIADIC = (1 << 0),
 163 };
 164
 165 struct side_event_description {
 166         uint32_t version;
 167         uint32_t enabled;
 168         uint32_t loglevel;      /* enum side_loglevel */
 169         uint32_t nr_fields;
 170         uint32_t nr_attr;
 171         uint32_t _unused;
 172         uint64_t flags;
 173         const char *provider_name;
 174         const char *event_name;
 175         const struct side_event_field *fields;
 176         const struct side_attr *attr;
 177 };
 178
 179 struct side_arg_dynamic_vec_vla {
 180         const struct side_arg_dynamic_vec *sav;
 181         uint32_t len;
 182 };
 183
 184 struct side_arg_dynamic_vec {
 185         uint32_t dynamic_type;  /* enum side_dynamic_type */
 186         uint32_t nr_attr;
 187         const struct side_attr *attr;
 188         union {
 189                 uint8_t side_bool;
 190
 191                 uint8_t side_u8;
 192                 uint16_t side_u16;
 193                 uint32_t side_u32;
 194                 uint64_t side_u64;
 195                 int8_t side_s8;
 196                 int16_t side_s16;
 197                 int32_t side_s32;
 198                 int64_t side_s64;
 199
 200 #if __HAVE_FLOAT16
 201                 _Float16 side_float_binary16;
 202 #endif
 203 #if __HAVE_FLOAT32
 204                 _Float32 side_float_binary32;
 205 #endif
 206 #if __HAVE_FLOAT64
 207                 _Float64 side_float_binary64;
 208 #endif
 209 #if __HAVE_FLOAT128
 210                 _Float128 side_float_binary128;
 211 #endif
 212
 213                 const char *string;
 214
 215                 const struct side_arg_dynamic_event_struct *side_dynamic_struct;
 216                 struct {
 217                         void *app_ctx;
 218                         side_dynamic_struct_visitor visitor;
 219                 } side_dynamic_struct_visitor;
 220
 221                 const struct side_arg_dynamic_vec_vla *side_dynamic_vla;
 222                 struct {
 223                         void *app_ctx;
 224                         side_dynamic_vla_visitor visitor;
 225                 } side_dynamic_vla_visitor;
 226         } u;
 227 };
 228
 229 struct side_arg_dynamic_event_field {
 230         const char *field_name;
 231         const struct side_arg_dynamic_vec elem;
 232 };
 233
 234 struct side_arg_dynamic_event_struct {
 235         const struct side_arg_dynamic_event_field *fields;
 236         uint32_t len;
 237 };
 238
 239 struct side_arg_vec {
 240         enum side_type type;
 241         union {
 242                 uint8_t side_bool;
 243
 244                 uint8_t side_u8;
 245                 uint16_t side_u16;
 246                 uint32_t side_u32;
 247                 uint64_t side_u64;
 248                 int8_t side_s8;
 249                 int16_t side_s16;
 250                 int32_t side_s32;
 251                 int64_t side_s64;
 252
 253 #if __HAVE_FLOAT16
 254                 _Float16 side_float_binary16;
 255 #endif
 256 #if __HAVE_FLOAT32
 257                 _Float32 side_float_binary32;
 258 #endif
 259 #if __HAVE_FLOAT64
 260                 _Float64 side_float_binary64;
 261 #endif
 262 #if __HAVE_FLOAT128
 263                 _Float128 side_float_binary128;
 264 #endif
 265
 266                 const char *string;
 267                 const struct side_arg_vec_description *side_struct;
 268                 const struct side_arg_vec_description *side_array;
 269                 const struct side_arg_vec_description *side_vla;
 270                 void *side_vla_app_visitor_ctx;
 271
 272                 void *side_array_fixint;
 273                 struct {
 274                         void *p;
 275                         uint32_t length;
 276                 } side_vla_fixint;
 277
 278                 struct side_arg_dynamic_vec dynamic;
 279         } u;
 280 };
 281
 282 struct side_arg_vec_description {
 283         const struct side_arg_vec *sav;
 284         uint32_t len;
 285 };
 286
 287 /* The visitor pattern is a double-dispatch visitor. */
 288 struct side_tracer_visitor_ctx {
 289         enum side_visitor_status (*write_elem)(
 290                         const struct side_tracer_visitor_ctx *tracer_ctx,
 291                         const struct side_arg_vec *elem);
 292         void *priv;             /* Private tracer context. */
 293 };
 294
 295 struct side_tracer_dynamic_struct_visitor_ctx {
 296         enum side_visitor_status (*write_field)(
 297                         const struct side_tracer_dynamic_struct_visitor_ctx *tracer_ctx,
 298                         const struct side_arg_dynamic_event_field *dynamic_field);
 299         void *priv;             /* Private tracer context. */
 300 };
 301
 302 struct side_tracer_dynamic_vla_visitor_ctx {
 303         enum side_visitor_status (*write_elem)(
 304                         const struct side_tracer_dynamic_vla_visitor_ctx *tracer_ctx,
 305                         const struct side_arg_dynamic_vec *elem);
 306         void *priv;             /* Private tracer context. */
 307 };
 308
 309 #define side_attr(_key, _value) \
 310         { \
 311                 .key = _key, \
 312                 .value = _value, \
 313         }
 314
 315 #define side_attr_list(...) \
 316         SIDE_COMPOUND_LITERAL(const struct side_attr, __VA_ARGS__)
 317
 318 #define side_type_decl(_type, _attr) \
 319         { \
 320                 .type = _type, \
 321                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 322                 .attr = _attr, \
 323         }
 324
 325 #define side_field(_name, _type, _attr) \
 326         { \
 327                 .field_name = _name, \
 328                 .side_type = side_type_decl(_type, SIDE_PARAM(_attr)), \
 329         }
 330
 331 #define side_type_struct_decl(_fields, _attr) \
 332         { \
 333                 .type = SIDE_TYPE_STRUCT, \
 334                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 335                 .attr = _attr, \
 336                 .u = { \
 337                         .side_struct = { \
 338                                 .nr_fields = SIDE_ARRAY_SIZE(SIDE_PARAM(_fields)), \
 339                                 .fields = _fields, \
 340                         }, \
 341                 }, \
 342         }
 343 #define side_field_struct(_name, _fields, _attr) \
 344         { \
 345                 .field_name = _name, \
 346                 .side_type = side_type_struct_decl(SIDE_PARAM(_fields), SIDE_PARAM(_attr)), \
 347         }
 348
 349 #define side_type_array_decl(_elem_type, _length, _attr) \
 350         { \
 351                 .type = SIDE_TYPE_ARRAY, \
 352                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 353                 .attr = _attr, \
 354                 .u = { \
 355                         .side_array = { \
 356                                 .length = _length, \
 357                                 .elem_type = _elem_type, \
 358                         }, \
 359                 }, \
 360         }
 361 #define side_field_array(_name, _elem_type, _length, _attr) \
 362         { \
 363                 .field_name = _name, \
 364                 .side_type = side_type_array_decl(SIDE_PARAM(_elem_type), _length, SIDE_PARAM(_attr)), \
 365         }
 366
 367 #define side_type_vla_decl(_elem_type, _attr) \
 368         { \
 369                 .type = SIDE_TYPE_VLA, \
 370                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 371                 .attr = _attr, \
 372                 .u = { \
 373                         .side_vla = { \
 374                                 .elem_type = _elem_type, \
 375                         }, \
 376                 }, \
 377         }
 378 #define side_field_vla(_name, _elem_type, _attr) \
 379         { \
 380                 .field_name = _name, \
 381                 .side_type = side_type_vla_decl(SIDE_PARAM(_elem_type), SIDE_PARAM(_attr)), \
 382         }
 383
 384 #define side_type_vla_visitor_decl(_elem_type, _visitor, _attr) \
 385         { \
 386                 .type = SIDE_TYPE_VLA_VISITOR, \
 387                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 388                 .attr = _attr, \
 389                 .u = { \
 390                         .side_vla_visitor = { \
 391                                 .elem_type = SIDE_PARAM(_elem_type), \
 392                                 .visitor = _visitor, \
 393                         }, \
 394                 }, \
 395         }
 396 #define side_field_vla_visitor(_name, _elem_type, _visitor, _attr) \
 397         { \
 398                 .field_name = _name, \
 399                 .side_type = side_type_vla_visitor_decl(SIDE_PARAM(_elem_type), _visitor, SIDE_PARAM(_attr)), \
 400         }
 401
 402 #define side_elem(...) \
 403         SIDE_COMPOUND_LITERAL(const struct side_type_description, __VA_ARGS__)
 404
 405 #define side_elem_type(_type, _attr) \
 406         side_elem(side_type_decl(_type, SIDE_PARAM(_attr)))
 407
 408 #define side_field_list(...) \
 409         SIDE_COMPOUND_LITERAL(const struct side_event_field, __VA_ARGS__)
 410
 411 #define side_arg_bool(val)              { .type = SIDE_TYPE_BOOL, .u = { .side_bool = !!(val) } }
 412 #define side_arg_u8(val)                { .type = SIDE_TYPE_U8, .u = { .side_u8 = (val) } }
 413 #define side_arg_u16(val)               { .type = SIDE_TYPE_U16, .u = { .side_u16 = (val) } }
 414 #define side_arg_u32(val)               { .type = SIDE_TYPE_U32, .u = { .side_u32 = (val) } }
 415 #define side_arg_u64(val)               { .type = SIDE_TYPE_U64, .u = { .side_u64 = (val) } }
 416 #define side_arg_s8(val)                { .type = SIDE_TYPE_S8, .u = { .side_s8 = (val) } }
 417 #define side_arg_s16(val)               { .type = SIDE_TYPE_S16, .u = { .side_s16 = (val) } }
 418 #define side_arg_s32(val)               { .type = SIDE_TYPE_S32, .u = { .side_s32 = (val) } }
 419 #define side_arg_s64(val)               { .type = SIDE_TYPE_S64, .u = { .side_s64 = (val) } }
 420 #define side_arg_float_binary16(val)    { .type = SIDE_TYPE_FLOAT_BINARY16, .u = { .side_float_binary16 = (val) } }
 421 #define side_arg_float_binary32(val)    { .type = SIDE_TYPE_FLOAT_BINARY32, .u = { .side_float_binary32 = (val) } }
 422 #define side_arg_float_binary64(val)    { .type = SIDE_TYPE_FLOAT_BINARY64, .u = { .side_float_binary64 = (val) } }
 423 #define side_arg_float_binary128(val)   { .type = SIDE_TYPE_FLOAT_BINARY128, .u = { .side_float_binary128 = (val) } }
 424
 425 #define side_arg_string(val)            { .type = SIDE_TYPE_STRING, .u = { .string = (val) } }
 426 #define side_arg_struct(_side_type)     { .type = SIDE_TYPE_STRUCT, .u = { .side_struct = (_side_type) } }
 427 #define side_arg_array(_side_type)      { .type = SIDE_TYPE_ARRAY, .u = { .side_array = (_side_type) } }
 428 #define side_arg_vla(_side_type)        { .type = SIDE_TYPE_VLA, .u = { .side_vla = (_side_type) } }
 429 #define side_arg_vla_visitor(_ctx)      { .type = SIDE_TYPE_VLA_VISITOR, .u = { .side_vla_app_visitor_ctx = (_ctx) } }
 430
 431 #define side_arg_array_u8(_ptr)         { .type = SIDE_TYPE_ARRAY_U8, .u = { .side_array_fixint = (_ptr) } }
 432 #define side_arg_array_u16(_ptr)        { .type = SIDE_TYPE_ARRAY_U16, .u = { .side_array_fixint = (_ptr) } }
 433 #define side_arg_array_u32(_ptr)        { .type = SIDE_TYPE_ARRAY_U32, .u = { .side_array_fixint = (_ptr) } }
 434 #define side_arg_array_u64(_ptr)        { .type = SIDE_TYPE_ARRAY_U64, .u = { .side_array_fixint = (_ptr) } }
 435 #define side_arg_array_s8(_ptr)         { .type = SIDE_TYPE_ARRAY_S8, .u = { .side_array_fixint = (_ptr) } }
 436 #define side_arg_array_s16(_ptr)        { .type = SIDE_TYPE_ARRAY_S16, .u = { .side_array_fixint  = (_ptr) } }
 437 #define side_arg_array_s32(_ptr)        { .type = SIDE_TYPE_ARRAY_S32, .u = { .side_array_fixint = (_ptr) } }
 438 #define side_arg_array_s64(_ptr)        { .type = SIDE_TYPE_ARRAY_S64, .u = { .side_array_fixint = (_ptr) } }
 439
 440 #define side_arg_vla_u8(_ptr, _length)  { .type = SIDE_TYPE_VLA_U8, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } }
 441 #define side_arg_vla_u16(_ptr, _length) { .type = SIDE_TYPE_VLA_U16, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 442 #define side_arg_vla_u32(_ptr, _length) { .type = SIDE_TYPE_VLA_U32, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 443 #define side_arg_vla_u64(_ptr, _length) { .type = SIDE_TYPE_VLA_U64, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 444 #define side_arg_vla_s8(_ptr, _length)  { .type = SIDE_TYPE_VLA_S8, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 445 #define side_arg_vla_s16(_ptr, _length) { .type = SIDE_TYPE_VLA_S16, .u = { .side_vla_fixint  = { .p = (_ptr), .length = (_length) } } }
 446 #define side_arg_vla_s32(_ptr, _length) { .type = SIDE_TYPE_VLA_S32, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 447 #define side_arg_vla_s64(_ptr, _length) { .type = SIDE_TYPE_VLA_S64, .u = { .side_vla_fixint = { .p = (_ptr), .length = (_length) } } }
 448
 449 #define side_arg_dynamic(dynamic_arg_type) \
 450         { \
 451                 .type = SIDE_TYPE_DYNAMIC, \
 452                 .u = { \
 453                         .dynamic = dynamic_arg_type, \
 454                 }, \
 455         }
 456
 457 #define side_arg_dynamic_null(_attr) \
 458         { \
 459                 .dynamic_type = SIDE_DYNAMIC_TYPE_NULL, \
 460                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 461                 .attr = _attr, \
 462         }
 463
 464 #define side_arg_dynamic_bool(_val, _attr) \
 465         { \
 466                 .dynamic_type = SIDE_DYNAMIC_TYPE_BOOL, \
 467                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 468                 .attr = _attr, \
 469                 .u = { \
 470                         .side_bool = !!(_val), \
 471                 }, \
 472         }
 473
 474 #define side_arg_dynamic_u8(_val, _attr) \
 475         { \
 476                 .dynamic_type = SIDE_DYNAMIC_TYPE_U8, \
 477                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 478                 .attr = _attr, \
 479                 .u = { \
 480                         .side_u8 = (_val), \
 481                 }, \
 482         }
 483 #define side_arg_dynamic_u16(_val, _attr) \
 484         { \
 485                 .dynamic_type = SIDE_DYNAMIC_TYPE_U16, \
 486                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 487                 .attr = _attr, \
 488                 .u = { \
 489                         .side_u16 = (_val), \
 490                 }, \
 491         }
 492 #define side_arg_dynamic_u32(_val, _attr) \
 493         { \
 494                 .dynamic_type = SIDE_DYNAMIC_TYPE_U32, \
 495                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 496                 .attr = _attr, \
 497                 .u = { \
 498                         .side_u32 = (_val), \
 499                 }, \
 500         }
 501 #define side_arg_dynamic_u64(_val, _attr) \
 502         { \
 503                 .dynamic_type = SIDE_DYNAMIC_TYPE_U64, \
 504                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 505                 .attr = _attr, \
 506                 .u = { \
 507                         .side_u64 = (_val), \
 508                 }, \
 509         }
 510
 511 #define side_arg_dynamic_s8(_val, _attr) \
 512         { \
 513                 .dynamic_type = SIDE_DYNAMIC_TYPE_S8, \
 514                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 515                 .attr = _attr, \
 516                 .u = { \
 517                         .side_s8 = (_val), \
 518                 }, \
 519         }
 520 #define side_arg_dynamic_s16(_val, _attr) \
 521         { \
 522                 .dynamic_type = SIDE_DYNAMIC_TYPE_S16, \
 523                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 524                 .attr = _attr, \
 525                 .u = { \
 526                         .side_s16 = (_val), \
 527                 }, \
 528         }
 529 #define side_arg_dynamic_s32(_val, _attr) \
 530         { \
 531                 .dynamic_type = SIDE_DYNAMIC_TYPE_S32, \
 532                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 533                 .attr = _attr, \
 534                 .u = { \
 535                         .side_s32 = (_val), \
 536                 }, \
 537         }
 538 #define side_arg_dynamic_s64(_val, _attr) \
 539         { \
 540                 .dynamic_type = SIDE_DYNAMIC_TYPE_S64, \
 541                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 542                 .attr = _attr, \
 543                 .u = { \
 544                         .side_s64 = (_val), \
 545                 }, \
 546         }
 547
 548 #define side_arg_dynamic_float_binary16(_val, _attr) \
 549         { \
 550                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY16, \
 551                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 552                 .attr = _attr, \
 553                 .u = { \
 554                         .side_float_binary16 = (_val), \
 555                 }, \
 556         }
 557 #define side_arg_dynamic_float_binary32(_val, _attr) \
 558         { \
 559                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY32, \
 560                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 561                 .attr = _attr, \
 562                 .u = { \
 563                         .side_float_binary32 = (_val), \
 564                 }, \
 565         }
 566 #define side_arg_dynamic_float_binary64(_val, _attr) \
 567         { \
 568                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY64, \
 569                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 570                 .attr = _attr, \
 571                 .u = { \
 572                         .side_float_binary64 = (_val), \
 573                 }, \
 574         }
 575 #define side_arg_dynamic_float_binary128(_val, _attr) \
 576         { \
 577                 .dynamic_type = SIDE_DYNAMIC_TYPE_FLOAT_BINARY128, \
 578                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 579                 .attr = _attr, \
 580                 .u = { \
 581                         .side_float_binary128 = (_val), \
 582                 }, \
 583         }
 584
 585 #define side_arg_dynamic_string(_val, _attr) \
 586         { \
 587                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRING, \
 588                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 589                 .attr = _attr, \
 590                 .u = { \
 591                         .string = (_val), \
 592                 }, \
 593         }
 594
 595 #define side_arg_dynamic_vla(_vla, _attr) \
 596         { \
 597                 .dynamic_type = SIDE_DYNAMIC_TYPE_VLA, \
 598                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 599                 .attr = _attr, \
 600                 .u = { \
 601                         .side_dynamic_vla = (_vla), \
 602                 }, \
 603         }
 604
 605 #define side_arg_dynamic_vla_visitor(_dynamic_vla_visitor, _ctx, _attr) \
 606         { \
 607                 .dynamic_type = SIDE_DYNAMIC_TYPE_VLA_VISITOR, \
 608                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 609                 .attr = _attr, \
 610                 .u = { \
 611                         .side_dynamic_vla_visitor = { \
 612                                 .app_ctx = _ctx, \
 613                                 .visitor = _dynamic_vla_visitor, \
 614                         }, \
 615                 }, \
 616         }
 617
 618 #define side_arg_dynamic_struct(_struct, _attr) \
 619         { \
 620                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRUCT, \
 621                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 622                 .attr = _attr, \
 623                 .u = { \
 624                         .side_dynamic_struct = (_struct), \
 625                 }, \
 626         }
 627
 628 #define side_arg_dynamic_struct_visitor(_dynamic_struct_visitor, _ctx, _attr) \
 629         { \
 630                 .dynamic_type = SIDE_DYNAMIC_TYPE_STRUCT_VISITOR, \
 631                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 632                 .attr = _attr, \
 633                 .u = { \
 634                         .side_dynamic_struct_visitor = { \
 635                                 .app_ctx = _ctx, \
 636                                 .visitor = _dynamic_struct_visitor, \
 637                         }, \
 638                 }, \
 639         }
 640
 641 #define side_arg_dynamic_define_vec(_identifier, _sav) \
 642         const struct side_arg_dynamic_vec _identifier##_vec[] = { _sav }; \
 643         const struct side_arg_dynamic_vec_vla _identifier = { \
 644                 .sav = _identifier##_vec, \
 645                 .len = SIDE_ARRAY_SIZE(_identifier##_vec), \
 646         }
 647
 648 #define side_arg_dynamic_define_struct(_identifier, _struct_fields) \
 649         const struct side_arg_dynamic_event_field _identifier##_fields[] = { _struct_fields }; \
 650         const struct side_arg_dynamic_event_struct _identifier = { \
 651                 .fields = _identifier##_fields, \
 652                 .len = SIDE_ARRAY_SIZE(_identifier##_fields), \
 653         }
 654
 655 #define side_arg_define_vec(_identifier, _sav) \
 656         const struct side_arg_vec _identifier##_vec[] = { _sav }; \
 657         const struct side_arg_vec_description _identifier = { \
 658                 .sav = _identifier##_vec, \
 659                 .len = SIDE_ARRAY_SIZE(_identifier##_vec), \
 660         }
 661
 662 #define side_arg_dynamic_field(_name, _elem) \
 663         { \
 664                 .field_name = _name, \
 665                 .elem = _elem, \
 666         }
 667
 668 #define side_arg_list(...)      __VA_ARGS__
 669
 670 #define side_event_cond(desc) if (side_unlikely((desc)->enabled))
 671
 672 #define side_event_call(desc, _sav) \
 673         { \
 674                 const struct side_arg_vec side_sav[] = { _sav }; \
 675                 const struct side_arg_vec_description sav_desc = { \
 676                         .sav = side_sav, \
 677                         .len = SIDE_ARRAY_SIZE(side_sav), \
 678                 }; \
 679                 tracer_call(desc, &sav_desc); \
 680         }
 681
 682 #define side_event(desc, sav) \
 683         side_event_cond(desc) \
 684                 side_event_call(desc, SIDE_PARAM(sav))
 685
 686 #define side_event_call_variadic(desc, _sav, _var_fields) \
 687         { \
 688                 const struct side_arg_vec side_sav[] = { _sav }; \
 689                 const struct side_arg_vec_description sav_desc = { \
 690                         .sav = side_sav, \
 691                         .len = SIDE_ARRAY_SIZE(side_sav), \
 692                 }; \
 693                 const struct side_arg_dynamic_event_field side_fields[] = { _var_fields }; \
 694                 const struct side_arg_dynamic_event_struct var_struct = { \
 695                         .fields = side_fields, \
 696                         .len = SIDE_ARRAY_SIZE(side_fields), \
 697                 }; \
 698                 tracer_call_variadic(desc, &sav_desc, &var_struct); \
 699         }
 700
 701 #define side_event_variadic(desc, sav, var) \
 702         side_event_cond(desc) \
 703                 side_event_call_variadic(desc, SIDE_PARAM(sav), SIDE_PARAM(var))
 704
 705 #define _side_define_event(_identifier, _provider, _event, _loglevel, _fields, _attr, _flags) \
 706         struct side_event_description _identifier = { \
 707                 .version = 0, \
 708                 .enabled = 0, \
 709                 .loglevel = _loglevel, \
 710                 .nr_fields = SIDE_ARRAY_SIZE(SIDE_PARAM(_fields)), \
 711                 .nr_attr = SIDE_ARRAY_SIZE(SIDE_PARAM(_attr)), \
 712                 .flags = (_flags), \
 713                 .provider_name = _provider, \
 714                 .event_name = _event, \
 715                 .fields = _fields, \
 716                 .attr = _attr, \
 717         }
 718
 719 #define side_define_event(_identifier, _provider, _event, _loglevel, _fields, _attr) \
 720         _side_define_event(_identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
 721                         SIDE_PARAM(_attr), 0)
 722
 723 #define side_define_event_variadic(_identifier, _provider, _event, _loglevel, _fields, _attr) \
 724         _side_define_event(_identifier, _provider, _event, _loglevel, SIDE_PARAM(_fields), \
 725                         SIDE_PARAM(_attr), SIDE_EVENT_FLAG_VARIADIC)
 726
 727 #define side_declare_event(_identifier) \
 728         struct side_event_description _identifier
 729
 730 #endif /* _SIDE_TRACE_H */