tools/lib/traceevent/event-parse.h

   1 /*
   2  * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
   3  *
   4  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation;
   8  * version 2.1 of the License (not later!)
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this program; if not,  see <http://www.gnu.org/licenses>
  17  *
  18  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  19  */
  20 #ifndef _PARSE_EVENTS_H
  21 #define _PARSE_EVENTS_H
  22
  23 #include <stdarg.h>
  24 #include <regex.h>
  25
  26 #ifndef __maybe_unused
  27 #define __maybe_unused __attribute__((unused))
  28 #endif
  29
  30 /* ----------------------- trace_seq ----------------------- */
  31
  32
  33 #ifndef TRACE_SEQ_BUF_SIZE
  34 #define TRACE_SEQ_BUF_SIZE 4096
  35 #endif
  36
  37 #ifndef DEBUG_RECORD
  38 #define DEBUG_RECORD 0
  39 #endif
  40
  41 struct pevent_record {
  42         unsigned long long      ts;
  43         unsigned long long      offset;
  44         long long               missed_events;  /* buffer dropped events before */
  45         int                     record_size;    /* size of binary record */
  46         int                     size;           /* size of data */
  47         void                    *data;
  48         int                     cpu;
  49         int                     ref_count;
  50         int                     locked;         /* Do not free, even if ref_count is zero */
  51         void                    *priv;
  52 #if DEBUG_RECORD
  53         struct pevent_record    *prev;
  54         struct pevent_record    *next;
  55         long                    alloc_addr;
  56 #endif
  57 };
  58
  59 /*
  60  * Trace sequences are used to allow a function to call several other functions
  61  * to create a string of data to use (up to a max of PAGE_SIZE).
  62  */
  63
  64 struct trace_seq {
  65         char                    *buffer;
  66         unsigned int            buffer_size;
  67         unsigned int            len;
  68         unsigned int            readpos;
  69 };
  70
  71 void trace_seq_init(struct trace_seq *s);
  72 void trace_seq_reset(struct trace_seq *s);
  73 void trace_seq_destroy(struct trace_seq *s);
  74
  75 extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
  76         __attribute__ ((format (printf, 2, 3)));
  77 extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
  78         __attribute__ ((format (printf, 2, 0)));
  79
  80 extern int trace_seq_puts(struct trace_seq *s, const char *str);
  81 extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
  82
  83 extern void trace_seq_terminate(struct trace_seq *s);
  84
  85 extern int trace_seq_do_printf(struct trace_seq *s);
  86
  87
  88 /* ----------------------- pevent ----------------------- */
  89
  90 struct pevent;
  91 struct event_format;
  92
  93 typedef int (*pevent_event_handler_func)(struct trace_seq *s,
  94                                          struct pevent_record *record,
  95                                          struct event_format *event,
  96                                          void *context);
  97
  98 typedef int (*pevent_plugin_load_func)(struct pevent *pevent);
  99 typedef int (*pevent_plugin_unload_func)(void);
 100
 101 struct plugin_option {
 102         struct plugin_option            *next;
 103         void                            *handle;
 104         char                            *file;
 105         char                            *name;
 106         char                            *plugin_alias;
 107         char                            *description;
 108         char                            *value;
 109         void                            *priv;
 110         int                             set;
 111 };
 112
 113 /*
 114  * Plugin hooks that can be called:
 115  *
 116  * PEVENT_PLUGIN_LOADER:  (required)
 117  *   The function name to initialized the plugin.
 118  *
 119  *   int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
 120  *
 121  * PEVENT_PLUGIN_UNLOADER:  (optional)
 122  *   The function called just before unloading
 123  *
 124  *   int PEVENT_PLUGIN_UNLOADER(void)
 125  *
 126  * PEVENT_PLUGIN_OPTIONS:  (optional)
 127  *   Plugin options that can be set before loading
 128  *
 129  *   struct plugin_option PEVENT_PLUGIN_OPTIONS[] = {
 130  *      {
 131  *              .name = "option-name",
 132  *              .plugin_alias = "overide-file-name", (optional)
 133  *              .description = "description of option to show users",
 134  *      },
 135  *      {
 136  *              .name = NULL,
 137  *      },
 138  *   };
 139  *
 140  *   Array must end with .name = NULL;
 141  *
 142  *
 143  *   .plugin_alias is used to give a shorter name to access
 144  *   the vairable. Useful if a plugin handles more than one event.
 145  *
 146  * PEVENT_PLUGIN_ALIAS: (optional)
 147  *   The name to use for finding options (uses filename if not defined)
 148  */
 149 #define PEVENT_PLUGIN_LOADER pevent_plugin_loader
 150 #define PEVENT_PLUGIN_UNLOADER pevent_plugin_unloader
 151 #define PEVENT_PLUGIN_OPTIONS pevent_plugin_options
 152 #define PEVENT_PLUGIN_ALIAS pevent_plugin_alias
 153 #define _MAKE_STR(x)    #x
 154 #define MAKE_STR(x)     _MAKE_STR(x)
 155 #define PEVENT_PLUGIN_LOADER_NAME MAKE_STR(PEVENT_PLUGIN_LOADER)
 156 #define PEVENT_PLUGIN_UNLOADER_NAME MAKE_STR(PEVENT_PLUGIN_UNLOADER)
 157 #define PEVENT_PLUGIN_OPTIONS_NAME MAKE_STR(PEVENT_PLUGIN_OPTIONS)
 158 #define PEVENT_PLUGIN_ALIAS_NAME MAKE_STR(PEVENT_PLUGIN_ALIAS)
 159
 160 #define NSECS_PER_SEC           1000000000ULL
 161 #define NSECS_PER_USEC          1000ULL
 162
 163 enum format_flags {
 164         FIELD_IS_ARRAY          = 1,
 165         FIELD_IS_POINTER        = 2,
 166         FIELD_IS_SIGNED         = 4,
 167         FIELD_IS_STRING         = 8,
 168         FIELD_IS_DYNAMIC        = 16,
 169         FIELD_IS_LONG           = 32,
 170         FIELD_IS_FLAG           = 64,
 171         FIELD_IS_SYMBOLIC       = 128,
 172 };
 173
 174 struct format_field {
 175         struct format_field     *next;
 176         struct event_format     *event;
 177         char                    *type;
 178         char                    *name;
 179         int                     offset;
 180         int                     size;
 181         unsigned int            arraylen;
 182         unsigned int            elementsize;
 183         unsigned long           flags;
 184 };
 185
 186 struct format {
 187         int                     nr_common;
 188         int                     nr_fields;
 189         struct format_field     *common_fields;
 190         struct format_field     *fields;
 191 };
 192
 193 struct print_arg_atom {
 194         char                    *atom;
 195 };
 196
 197 struct print_arg_string {
 198         char                    *string;
 199         int                     offset;
 200 };
 201
 202 struct print_arg_field {
 203         char                    *name;
 204         struct format_field     *field;
 205 };
 206
 207 struct print_flag_sym {
 208         struct print_flag_sym   *next;
 209         char                    *value;
 210         char                    *str;
 211 };
 212
 213 struct print_arg_typecast {
 214         char                    *type;
 215         struct print_arg        *item;
 216 };
 217
 218 struct print_arg_flags {
 219         struct print_arg        *field;
 220         char                    *delim;
 221         struct print_flag_sym   *flags;
 222 };
 223
 224 struct print_arg_symbol {
 225         struct print_arg        *field;
 226         struct print_flag_sym   *symbols;
 227 };
 228
 229 struct print_arg_hex {
 230         struct print_arg        *field;
 231         struct print_arg        *size;
 232 };
 233
 234 struct print_arg_dynarray {
 235         struct format_field     *field;
 236         struct print_arg        *index;
 237 };
 238
 239 struct print_arg;
 240
 241 struct print_arg_op {
 242         char                    *op;
 243         int                     prio;
 244         struct print_arg        *left;
 245         struct print_arg        *right;
 246 };
 247
 248 struct pevent_function_handler;
 249
 250 struct print_arg_func {
 251         struct pevent_function_handler  *func;
 252         struct print_arg                *args;
 253 };
 254
 255 enum print_arg_type {
 256         PRINT_NULL,
 257         PRINT_ATOM,
 258         PRINT_FIELD,
 259         PRINT_FLAGS,
 260         PRINT_SYMBOL,
 261         PRINT_HEX,
 262         PRINT_TYPE,
 263         PRINT_STRING,
 264         PRINT_BSTRING,
 265         PRINT_DYNAMIC_ARRAY,
 266         PRINT_OP,
 267         PRINT_FUNC,
 268 };
 269
 270 struct print_arg {
 271         struct print_arg                *next;
 272         enum print_arg_type             type;
 273         union {
 274                 struct print_arg_atom           atom;
 275                 struct print_arg_field          field;
 276                 struct print_arg_typecast       typecast;
 277                 struct print_arg_flags          flags;
 278                 struct print_arg_symbol         symbol;
 279                 struct print_arg_hex            hex;
 280                 struct print_arg_func           func;
 281                 struct print_arg_string         string;
 282                 struct print_arg_op             op;
 283                 struct print_arg_dynarray       dynarray;
 284         };
 285 };
 286
 287 struct print_fmt {
 288         char                    *format;
 289         struct print_arg        *args;
 290 };
 291
 292 struct event_format {
 293         struct pevent           *pevent;
 294         char                    *name;
 295         int                     id;
 296         int                     flags;
 297         struct format           format;
 298         struct print_fmt        print_fmt;
 299         char                    *system;
 300         pevent_event_handler_func handler;
 301         void                    *context;
 302 };
 303
 304 enum {
 305         EVENT_FL_ISFTRACE       = 0x01,
 306         EVENT_FL_ISPRINT        = 0x02,
 307         EVENT_FL_ISBPRINT       = 0x04,
 308         EVENT_FL_ISFUNCENT      = 0x10,
 309         EVENT_FL_ISFUNCRET      = 0x20,
 310
 311         EVENT_FL_FAILED         = 0x80000000
 312 };
 313
 314 enum event_sort_type {
 315         EVENT_SORT_ID,
 316         EVENT_SORT_NAME,
 317         EVENT_SORT_SYSTEM,
 318 };
 319
 320 enum event_type {
 321         EVENT_ERROR,
 322         EVENT_NONE,
 323         EVENT_SPACE,
 324         EVENT_NEWLINE,
 325         EVENT_OP,
 326         EVENT_DELIM,
 327         EVENT_ITEM,
 328         EVENT_DQUOTE,
 329         EVENT_SQUOTE,
 330 };
 331
 332 typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
 333                                              unsigned long long *args);
 334
 335 enum pevent_func_arg_type {
 336         PEVENT_FUNC_ARG_VOID,
 337         PEVENT_FUNC_ARG_INT,
 338         PEVENT_FUNC_ARG_LONG,
 339         PEVENT_FUNC_ARG_STRING,
 340         PEVENT_FUNC_ARG_PTR,
 341         PEVENT_FUNC_ARG_MAX_TYPES
 342 };
 343
 344 enum pevent_flag {
 345         PEVENT_NSEC_OUTPUT              = 1,    /* output in NSECS */
 346 };
 347
 348 #define PEVENT_ERRORS                                                         \
 349         _PE(MEM_ALLOC_FAILED,   "failed to allocate memory"),                 \
 350         _PE(PARSE_EVENT_FAILED, "failed to parse event"),                     \
 351         _PE(READ_ID_FAILED,     "failed to read event id"),                   \
 352         _PE(READ_FORMAT_FAILED, "failed to read event format"),               \
 353         _PE(READ_PRINT_FAILED,  "failed to read event print fmt"),            \
 354         _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\
 355         _PE(INVALID_ARG_TYPE,   "invalid argument type")
 356
 357 #undef _PE
 358 #define _PE(__code, __str) PEVENT_ERRNO__ ## __code
 359 enum pevent_errno {
 360         PEVENT_ERRNO__SUCCESS                   = 0,
 361
 362         /*
 363          * Choose an arbitrary negative big number not to clash with standard
 364          * errno since SUS requires the errno has distinct positive values.
 365          * See 'Issue 6' in the link below.
 366          *
 367          * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
 368          */
 369         __PEVENT_ERRNO__START                   = -100000,
 370
 371         PEVENT_ERRORS,
 372
 373         __PEVENT_ERRNO__END,
 374 };
 375 #undef _PE
 376
 377 struct cmdline;
 378 struct cmdline_list;
 379 struct func_map;
 380 struct func_list;
 381 struct event_handler;
 382
 383 struct pevent {
 384         int ref_count;
 385
 386         int header_page_ts_offset;
 387         int header_page_ts_size;
 388         int header_page_size_offset;
 389         int header_page_size_size;
 390         int header_page_data_offset;
 391         int header_page_data_size;
 392         int header_page_overwrite;
 393
 394         int file_bigendian;
 395         int host_bigendian;
 396
 397         int latency_format;
 398
 399         int old_format;
 400
 401         int cpus;
 402         int long_size;
 403         int page_size;
 404
 405         struct cmdline *cmdlines;
 406         struct cmdline_list *cmdlist;
 407         int cmdline_count;
 408
 409         struct func_map *func_map;
 410         struct func_list *funclist;
 411         unsigned int func_count;
 412
 413         struct printk_map *printk_map;
 414         struct printk_list *printklist;
 415         unsigned int printk_count;
 416
 417
 418         struct event_format **events;
 419         int nr_events;
 420         struct event_format **sort_events;
 421         enum event_sort_type last_type;
 422
 423         int type_offset;
 424         int type_size;
 425
 426         int pid_offset;
 427         int pid_size;
 428
 429         int pc_offset;
 430         int pc_size;
 431
 432         int flags_offset;
 433         int flags_size;
 434
 435         int ld_offset;
 436         int ld_size;
 437
 438         int print_raw;
 439
 440         int test_filters;
 441
 442         int flags;
 443
 444         struct format_field *bprint_ip_field;
 445         struct format_field *bprint_fmt_field;
 446         struct format_field *bprint_buf_field;
 447
 448         struct event_handler *handlers;
 449         struct pevent_function_handler *func_handlers;
 450
 451         /* cache */
 452         struct event_format *last_event;
 453 };
 454
 455 static inline void pevent_set_flag(struct pevent *pevent, int flag)
 456 {
 457         pevent->flags |= flag;
 458 }
 459
 460 static inline unsigned short
 461 __data2host2(struct pevent *pevent, unsigned short data)
 462 {
 463         unsigned short swap;
 464
 465         if (pevent->host_bigendian == pevent->file_bigendian)
 466                 return data;
 467
 468         swap = ((data & 0xffULL) << 8) |
 469                 ((data & (0xffULL << 8)) >> 8);
 470
 471         return swap;
 472 }
 473
 474 static inline unsigned int
 475 __data2host4(struct pevent *pevent, unsigned int data)
 476 {
 477         unsigned int swap;
 478
 479         if (pevent->host_bigendian == pevent->file_bigendian)
 480                 return data;
 481
 482         swap = ((data & 0xffULL) << 24) |
 483                 ((data & (0xffULL << 8)) << 8) |
 484                 ((data & (0xffULL << 16)) >> 8) |
 485                 ((data & (0xffULL << 24)) >> 24);
 486
 487         return swap;
 488 }
 489
 490 static inline unsigned long long
 491 __data2host8(struct pevent *pevent, unsigned long long data)
 492 {
 493         unsigned long long swap;
 494
 495         if (pevent->host_bigendian == pevent->file_bigendian)
 496                 return data;
 497
 498         swap = ((data & 0xffULL) << 56) |
 499                 ((data & (0xffULL << 8)) << 40) |
 500                 ((data & (0xffULL << 16)) << 24) |
 501                 ((data & (0xffULL << 24)) << 8) |
 502                 ((data & (0xffULL << 32)) >> 8) |
 503                 ((data & (0xffULL << 40)) >> 24) |
 504                 ((data & (0xffULL << 48)) >> 40) |
 505                 ((data & (0xffULL << 56)) >> 56);
 506
 507         return swap;
 508 }
 509
 510 #define data2host2(pevent, ptr)         __data2host2(pevent, *(unsigned short *)(ptr))
 511 #define data2host4(pevent, ptr)         __data2host4(pevent, *(unsigned int *)(ptr))
 512 #define data2host8(pevent, ptr)                                 \
 513 ({                                                              \
 514         unsigned long long __val;                               \
 515                                                                 \
 516         memcpy(&__val, (ptr), sizeof(unsigned long long));      \
 517         __data2host8(pevent, __val);                            \
 518 })
 519
 520 /* taken from kernel/trace/trace.h */
 521 enum trace_flag_type {
 522         TRACE_FLAG_IRQS_OFF             = 0x01,
 523         TRACE_FLAG_IRQS_NOSUPPORT       = 0x02,
 524         TRACE_FLAG_NEED_RESCHED         = 0x04,
 525         TRACE_FLAG_HARDIRQ              = 0x08,
 526         TRACE_FLAG_SOFTIRQ              = 0x10,
 527 };
 528
 529 int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
 530 int pevent_register_function(struct pevent *pevent, char *name,
 531                              unsigned long long addr, char *mod);
 532 int pevent_register_print_string(struct pevent *pevent, char *fmt,
 533                                  unsigned long long addr);
 534 int pevent_pid_is_registered(struct pevent *pevent, int pid);
 535
 536 void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
 537                         struct pevent_record *record);
 538
 539 int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
 540                              int long_size);
 541
 542 enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
 543                                      unsigned long size, const char *sys);
 544 enum pevent_errno pevent_parse_format(struct event_format **eventp, const char *buf,
 545                                       unsigned long size, const char *sys);
 546 void pevent_free_format(struct event_format *event);
 547
 548 void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
 549                            const char *name, struct pevent_record *record,
 550                            int *len, int err);
 551
 552 int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
 553                          const char *name, struct pevent_record *record,
 554                          unsigned long long *val, int err);
 555 int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
 556                                 const char *name, struct pevent_record *record,
 557                                 unsigned long long *val, int err);
 558 int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
 559                              const char *name, struct pevent_record *record,
 560                              unsigned long long *val, int err);
 561
 562 int pevent_print_num_field(struct trace_seq *s, const char *fmt,
 563                            struct event_format *event, const char *name,
 564                            struct pevent_record *record, int err);
 565
 566 int pevent_register_event_handler(struct pevent *pevent, int id,
 567                                   const char *sys_name, const char *event_name,
 568                                   pevent_event_handler_func func, void *context);
 569 int pevent_register_print_function(struct pevent *pevent,
 570                                    pevent_func_handler func,
 571                                    enum pevent_func_arg_type ret_type,
 572                                    char *name, ...);
 573
 574 struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
 575 struct format_field *pevent_find_field(struct event_format *event, const char *name);
 576 struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
 577
 578 const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
 579 unsigned long long
 580 pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
 581 unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
 582 int pevent_read_number_field(struct format_field *field, const void *data,
 583                              unsigned long long *value);
 584
 585 struct event_format *pevent_find_event(struct pevent *pevent, int id);
 586
 587 struct event_format *
 588 pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
 589
 590 void pevent_data_lat_fmt(struct pevent *pevent,
 591                          struct trace_seq *s, struct pevent_record *record);
 592 int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
 593 struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
 594 int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
 595 const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
 596 void pevent_event_info(struct trace_seq *s, struct event_format *event,
 597                        struct pevent_record *record);
 598 int pevent_strerror(struct pevent *pevent, enum pevent_errno errnum,
 599                     char *buf, size_t buflen);
 600
 601 struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
 602 struct format_field **pevent_event_common_fields(struct event_format *event);
 603 struct format_field **pevent_event_fields(struct event_format *event);
 604
 605 static inline int pevent_get_cpus(struct pevent *pevent)
 606 {
 607         return pevent->cpus;
 608 }
 609
 610 static inline void pevent_set_cpus(struct pevent *pevent, int cpus)
 611 {
 612         pevent->cpus = cpus;
 613 }
 614
 615 static inline int pevent_get_long_size(struct pevent *pevent)
 616 {
 617         return pevent->long_size;
 618 }
 619
 620 static inline void pevent_set_long_size(struct pevent *pevent, int long_size)
 621 {
 622         pevent->long_size = long_size;
 623 }
 624
 625 static inline int pevent_get_page_size(struct pevent *pevent)
 626 {
 627         return pevent->page_size;
 628 }
 629
 630 static inline void pevent_set_page_size(struct pevent *pevent, int _page_size)
 631 {
 632         pevent->page_size = _page_size;
 633 }
 634
 635 static inline int pevent_is_file_bigendian(struct pevent *pevent)
 636 {
 637         return pevent->file_bigendian;
 638 }
 639
 640 static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian)
 641 {
 642         pevent->file_bigendian = endian;
 643 }
 644
 645 static inline int pevent_is_host_bigendian(struct pevent *pevent)
 646 {
 647         return pevent->host_bigendian;
 648 }
 649
 650 static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian)
 651 {
 652         pevent->host_bigendian = endian;
 653 }
 654
 655 static inline int pevent_is_latency_format(struct pevent *pevent)
 656 {
 657         return pevent->latency_format;
 658 }
 659
 660 static inline void pevent_set_latency_format(struct pevent *pevent, int lat)
 661 {
 662         pevent->latency_format = lat;
 663 }
 664
 665 struct pevent *pevent_alloc(void);
 666 void pevent_free(struct pevent *pevent);
 667 void pevent_ref(struct pevent *pevent);
 668 void pevent_unref(struct pevent *pevent);
 669
 670 /* access to the internal parser */
 671 void pevent_buffer_init(const char *buf, unsigned long long size);
 672 enum event_type pevent_read_token(char **tok);
 673 void pevent_free_token(char *token);
 674 int pevent_peek_char(void);
 675 const char *pevent_get_input_buf(void);
 676 unsigned long long pevent_get_input_buf_ptr(void);
 677
 678 /* for debugging */
 679 void pevent_print_funcs(struct pevent *pevent);
 680 void pevent_print_printk(struct pevent *pevent);
 681
 682 /* ----------------------- filtering ----------------------- */
 683
 684 enum filter_boolean_type {
 685         FILTER_FALSE,
 686         FILTER_TRUE,
 687 };
 688
 689 enum filter_op_type {
 690         FILTER_OP_AND = 1,
 691         FILTER_OP_OR,
 692         FILTER_OP_NOT,
 693 };
 694
 695 enum filter_cmp_type {
 696         FILTER_CMP_NONE,
 697         FILTER_CMP_EQ,
 698         FILTER_CMP_NE,
 699         FILTER_CMP_GT,
 700         FILTER_CMP_LT,
 701         FILTER_CMP_GE,
 702         FILTER_CMP_LE,
 703         FILTER_CMP_MATCH,
 704         FILTER_CMP_NOT_MATCH,
 705         FILTER_CMP_REGEX,
 706         FILTER_CMP_NOT_REGEX,
 707 };
 708
 709 enum filter_exp_type {
 710         FILTER_EXP_NONE,
 711         FILTER_EXP_ADD,
 712         FILTER_EXP_SUB,
 713         FILTER_EXP_MUL,
 714         FILTER_EXP_DIV,
 715         FILTER_EXP_MOD,
 716         FILTER_EXP_RSHIFT,
 717         FILTER_EXP_LSHIFT,
 718         FILTER_EXP_AND,
 719         FILTER_EXP_OR,
 720         FILTER_EXP_XOR,
 721         FILTER_EXP_NOT,
 722 };
 723
 724 enum filter_arg_type {
 725         FILTER_ARG_NONE,
 726         FILTER_ARG_BOOLEAN,
 727         FILTER_ARG_VALUE,
 728         FILTER_ARG_FIELD,
 729         FILTER_ARG_EXP,
 730         FILTER_ARG_OP,
 731         FILTER_ARG_NUM,
 732         FILTER_ARG_STR,
 733 };
 734
 735 enum filter_value_type {
 736         FILTER_NUMBER,
 737         FILTER_STRING,
 738         FILTER_CHAR
 739 };
 740
 741 struct fliter_arg;
 742
 743 struct filter_arg_boolean {
 744         enum filter_boolean_type        value;
 745 };
 746
 747 struct filter_arg_field {
 748         struct format_field     *field;
 749 };
 750
 751 struct filter_arg_value {
 752         enum filter_value_type  type;
 753         union {
 754                 char                    *str;
 755                 unsigned long long      val;
 756         };
 757 };
 758
 759 struct filter_arg_op {
 760         enum filter_op_type     type;
 761         struct filter_arg       *left;
 762         struct filter_arg       *right;
 763 };
 764
 765 struct filter_arg_exp {
 766         enum filter_exp_type    type;
 767         struct filter_arg       *left;
 768         struct filter_arg       *right;
 769 };
 770
 771 struct filter_arg_num {
 772         enum filter_cmp_type    type;
 773         struct filter_arg       *left;
 774         struct filter_arg       *right;
 775 };
 776
 777 struct filter_arg_str {
 778         enum filter_cmp_type    type;
 779         struct format_field     *field;
 780         char                    *val;
 781         char                    *buffer;
 782         regex_t                 reg;
 783 };
 784
 785 struct filter_arg {
 786         enum filter_arg_type    type;
 787         union {
 788                 struct filter_arg_boolean       boolean;
 789                 struct filter_arg_field         field;
 790                 struct filter_arg_value         value;
 791                 struct filter_arg_op            op;
 792                 struct filter_arg_exp           exp;
 793                 struct filter_arg_num           num;
 794                 struct filter_arg_str           str;
 795         };
 796 };
 797
 798 struct filter_type {
 799         int                     event_id;
 800         struct event_format     *event;
 801         struct filter_arg       *filter;
 802 };
 803
 804 struct event_filter {
 805         struct pevent           *pevent;
 806         int                     filters;
 807         struct filter_type      *event_filters;
 808 };
 809
 810 struct event_filter *pevent_filter_alloc(struct pevent *pevent);
 811
 812 #define FILTER_NONE             -2
 813 #define FILTER_NOEXIST          -1
 814 #define FILTER_MISS             0
 815 #define FILTER_MATCH            1
 816
 817 enum filter_trivial_type {
 818         FILTER_TRIVIAL_FALSE,
 819         FILTER_TRIVIAL_TRUE,
 820         FILTER_TRIVIAL_BOTH,
 821 };
 822
 823 int pevent_filter_add_filter_str(struct event_filter *filter,
 824                                  const char *filter_str,
 825                                  char **error_str);
 826
 827
 828 int pevent_filter_match(struct event_filter *filter,
 829                         struct pevent_record *record);
 830
 831 int pevent_event_filtered(struct event_filter *filter,
 832                           int event_id);
 833
 834 void pevent_filter_reset(struct event_filter *filter);
 835
 836 void pevent_filter_clear_trivial(struct event_filter *filter,
 837                                  enum filter_trivial_type type);
 838
 839 void pevent_filter_free(struct event_filter *filter);
 840
 841 char *pevent_filter_make_string(struct event_filter *filter, int event_id);
 842
 843 int pevent_filter_remove_event(struct event_filter *filter,
 844                                int event_id);
 845
 846 int pevent_filter_event_has_trivial(struct event_filter *filter,
 847                                     int event_id,
 848                                     enum filter_trivial_type type);
 849
 850 int pevent_filter_copy(struct event_filter *dest, struct event_filter *source);
 851
 852 int pevent_update_trivial(struct event_filter *dest, struct event_filter *source,
 853                           enum filter_trivial_type type);
 854
 855 int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2);
 856
 857 #endif /* _PARSE_EVENTS_H */