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, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  20  */
  21 #ifndef _PARSE_EVENTS_H
  22 #define _PARSE_EVENTS_H
  23
  24 #include <stdarg.h>
  25 #include <regex.h>
  26
  27 #ifndef __unused
  28 #define __unused __attribute__ ((unused))
  29 #endif
  30
  31 /* ----------------------- trace_seq ----------------------- */
  32
  33
  34 #ifndef TRACE_SEQ_BUF_SIZE
  35 #define TRACE_SEQ_BUF_SIZE 4096
  36 #endif
  37
  38 #ifndef DEBUG_RECORD
  39 #define DEBUG_RECORD 0
  40 #endif
  41
  42 struct pevent_record {
  43         unsigned long long      ts;
  44         unsigned long long      offset;
  45         long long               missed_events;  /* buffer dropped events before */
  46         int                     record_size;    /* size of binary record */
  47         int                     size;           /* size of data */
  48         void                    *data;
  49         int                     cpu;
  50         int                     ref_count;
  51         int                     locked;         /* Do not free, even if ref_count is zero */
  52         void                    *private;
  53 #if DEBUG_RECORD
  54         struct pevent_record    *prev;
  55         struct pevent_record    *next;
  56         long                    alloc_addr;
  57 #endif
  58 };
  59
  60 /*
  61  * Trace sequences are used to allow a function to call several other functions
  62  * to create a string of data to use (up to a max of PAGE_SIZE).
  63  */
  64
  65 struct trace_seq {
  66         char                    *buffer;
  67         unsigned int            buffer_size;
  68         unsigned int            len;
  69         unsigned int            readpos;
  70 };
  71
  72 void trace_seq_init(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                            *private;
 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_dynarray {
 230         struct format_field     *field;
 231         struct print_arg        *index;
 232 };
 233
 234 struct print_arg;
 235
 236 struct print_arg_op {
 237         char                    *op;
 238         int                     prio;
 239         struct print_arg        *left;
 240         struct print_arg        *right;
 241 };
 242
 243 struct pevent_function_handler;
 244
 245 struct print_arg_func {
 246         struct pevent_function_handler  *func;
 247         struct print_arg                *args;
 248 };
 249
 250 enum print_arg_type {
 251         PRINT_NULL,
 252         PRINT_ATOM,
 253         PRINT_FIELD,
 254         PRINT_FLAGS,
 255         PRINT_SYMBOL,
 256         PRINT_TYPE,
 257         PRINT_STRING,
 258         PRINT_BSTRING,
 259         PRINT_DYNAMIC_ARRAY,
 260         PRINT_OP,
 261         PRINT_FUNC,
 262 };
 263
 264 struct print_arg {
 265         struct print_arg                *next;
 266         enum print_arg_type             type;
 267         union {
 268                 struct print_arg_atom           atom;
 269                 struct print_arg_field          field;
 270                 struct print_arg_typecast       typecast;
 271                 struct print_arg_flags          flags;
 272                 struct print_arg_symbol         symbol;
 273                 struct print_arg_func           func;
 274                 struct print_arg_string         string;
 275                 struct print_arg_op             op;
 276                 struct print_arg_dynarray       dynarray;
 277         };
 278 };
 279
 280 struct print_fmt {
 281         char                    *format;
 282         struct print_arg        *args;
 283 };
 284
 285 struct event_format {
 286         struct pevent           *pevent;
 287         char                    *name;
 288         int                     id;
 289         int                     flags;
 290         struct format           format;
 291         struct print_fmt        print_fmt;
 292         char                    *system;
 293         pevent_event_handler_func handler;
 294         void                    *context;
 295 };
 296
 297 enum {
 298         EVENT_FL_ISFTRACE       = 0x01,
 299         EVENT_FL_ISPRINT        = 0x02,
 300         EVENT_FL_ISBPRINT       = 0x04,
 301         EVENT_FL_ISFUNCENT      = 0x10,
 302         EVENT_FL_ISFUNCRET      = 0x20,
 303
 304         EVENT_FL_FAILED         = 0x80000000
 305 };
 306
 307 enum event_sort_type {
 308         EVENT_SORT_ID,
 309         EVENT_SORT_NAME,
 310         EVENT_SORT_SYSTEM,
 311 };
 312
 313 enum event_type {
 314         EVENT_ERROR,
 315         EVENT_NONE,
 316         EVENT_SPACE,
 317         EVENT_NEWLINE,
 318         EVENT_OP,
 319         EVENT_DELIM,
 320         EVENT_ITEM,
 321         EVENT_DQUOTE,
 322         EVENT_SQUOTE,
 323 };
 324
 325 typedef unsigned long long (*pevent_func_handler)(struct trace_seq *s,
 326                                              unsigned long long *args);
 327
 328 enum pevent_func_arg_type {
 329         PEVENT_FUNC_ARG_VOID,
 330         PEVENT_FUNC_ARG_INT,
 331         PEVENT_FUNC_ARG_LONG,
 332         PEVENT_FUNC_ARG_STRING,
 333         PEVENT_FUNC_ARG_PTR,
 334         PEVENT_FUNC_ARG_MAX_TYPES
 335 };
 336
 337 enum pevent_flag {
 338         PEVENT_NSEC_OUTPUT              = 1,    /* output in NSECS */
 339 };
 340
 341 struct cmdline;
 342 struct cmdline_list;
 343 struct func_map;
 344 struct func_list;
 345 struct event_handler;
 346
 347 struct pevent {
 348         int ref_count;
 349
 350         int header_page_ts_offset;
 351         int header_page_ts_size;
 352         int header_page_size_offset;
 353         int header_page_size_size;
 354         int header_page_data_offset;
 355         int header_page_data_size;
 356         int header_page_overwrite;
 357
 358         int file_bigendian;
 359         int host_bigendian;
 360
 361         int latency_format;
 362
 363         int old_format;
 364
 365         int cpus;
 366         int long_size;
 367
 368         struct cmdline *cmdlines;
 369         struct cmdline_list *cmdlist;
 370         int cmdline_count;
 371
 372         struct func_map *func_map;
 373         struct func_list *funclist;
 374         unsigned int func_count;
 375
 376         struct printk_map *printk_map;
 377         struct printk_list *printklist;
 378         unsigned int printk_count;
 379
 380
 381         struct event_format **events;
 382         int nr_events;
 383         struct event_format **sort_events;
 384         enum event_sort_type last_type;
 385
 386         int type_offset;
 387         int type_size;
 388
 389         int pid_offset;
 390         int pid_size;
 391
 392         int pc_offset;
 393         int pc_size;
 394
 395         int flags_offset;
 396         int flags_size;
 397
 398         int ld_offset;
 399         int ld_size;
 400
 401         int print_raw;
 402
 403         int test_filters;
 404
 405         int flags;
 406
 407         struct format_field *bprint_ip_field;
 408         struct format_field *bprint_fmt_field;
 409         struct format_field *bprint_buf_field;
 410
 411         struct event_handler *handlers;
 412         struct pevent_function_handler *func_handlers;
 413
 414         /* cache */
 415         struct event_format *last_event;
 416 };
 417
 418 static inline void pevent_set_flag(struct pevent *pevent, int flag)
 419 {
 420         pevent->flags |= flag;
 421 }
 422
 423 static inline unsigned short
 424 __data2host2(struct pevent *pevent, unsigned short data)
 425 {
 426         unsigned short swap;
 427
 428         if (pevent->host_bigendian == pevent->file_bigendian)
 429                 return data;
 430
 431         swap = ((data & 0xffULL) << 8) |
 432                 ((data & (0xffULL << 8)) >> 8);
 433
 434         return swap;
 435 }
 436
 437 static inline unsigned int
 438 __data2host4(struct pevent *pevent, unsigned int data)
 439 {
 440         unsigned int swap;
 441
 442         if (pevent->host_bigendian == pevent->file_bigendian)
 443                 return data;
 444
 445         swap = ((data & 0xffULL) << 24) |
 446                 ((data & (0xffULL << 8)) << 8) |
 447                 ((data & (0xffULL << 16)) >> 8) |
 448                 ((data & (0xffULL << 24)) >> 24);
 449
 450         return swap;
 451 }
 452
 453 static inline unsigned long long
 454 __data2host8(struct pevent *pevent, unsigned long long data)
 455 {
 456         unsigned long long swap;
 457
 458         if (pevent->host_bigendian == pevent->file_bigendian)
 459                 return data;
 460
 461         swap = ((data & 0xffULL) << 56) |
 462                 ((data & (0xffULL << 8)) << 40) |
 463                 ((data & (0xffULL << 16)) << 24) |
 464                 ((data & (0xffULL << 24)) << 8) |
 465                 ((data & (0xffULL << 32)) >> 8) |
 466                 ((data & (0xffULL << 40)) >> 24) |
 467                 ((data & (0xffULL << 48)) >> 40) |
 468                 ((data & (0xffULL << 56)) >> 56);
 469
 470         return swap;
 471 }
 472
 473 #define data2host2(pevent, ptr)         __data2host2(pevent, *(unsigned short *)(ptr))
 474 #define data2host4(pevent, ptr)         __data2host4(pevent, *(unsigned int *)(ptr))
 475 #define data2host8(pevent, ptr)                                 \
 476 ({                                                              \
 477         unsigned long long __val;                               \
 478                                                                 \
 479         memcpy(&__val, (ptr), sizeof(unsigned long long));      \
 480         __data2host8(pevent, __val);                            \
 481 })
 482
 483 /* taken from kernel/trace/trace.h */
 484 enum trace_flag_type {
 485         TRACE_FLAG_IRQS_OFF             = 0x01,
 486         TRACE_FLAG_IRQS_NOSUPPORT       = 0x02,
 487         TRACE_FLAG_NEED_RESCHED         = 0x04,
 488         TRACE_FLAG_HARDIRQ              = 0x08,
 489         TRACE_FLAG_SOFTIRQ              = 0x10,
 490 };
 491
 492 int pevent_register_comm(struct pevent *pevent, const char *comm, int pid);
 493 int pevent_register_function(struct pevent *pevent, char *name,
 494                              unsigned long long addr, char *mod);
 495 int pevent_register_print_string(struct pevent *pevent, char *fmt,
 496                                  unsigned long long addr);
 497 int pevent_pid_is_registered(struct pevent *pevent, int pid);
 498
 499 void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
 500                         struct pevent_record *record);
 501
 502 int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
 503                              int long_size);
 504
 505 int pevent_parse_event(struct pevent *pevent, const char *buf,
 506                        unsigned long size, const char *sys);
 507
 508 void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
 509                            const char *name, struct pevent_record *record,
 510                            int *len, int err);
 511
 512 int pevent_get_field_val(struct trace_seq *s, struct event_format *event,
 513                          const char *name, struct pevent_record *record,
 514                          unsigned long long *val, int err);
 515 int pevent_get_common_field_val(struct trace_seq *s, struct event_format *event,
 516                                 const char *name, struct pevent_record *record,
 517                                 unsigned long long *val, int err);
 518 int pevent_get_any_field_val(struct trace_seq *s, struct event_format *event,
 519                              const char *name, struct pevent_record *record,
 520                              unsigned long long *val, int err);
 521
 522 int pevent_print_num_field(struct trace_seq *s, const char *fmt,
 523                            struct event_format *event, const char *name,
 524                            struct pevent_record *record, int err);
 525
 526 int pevent_register_event_handler(struct pevent *pevent, int id, char *sys_name, char *event_name,
 527                                   pevent_event_handler_func func, void *context);
 528 int pevent_register_print_function(struct pevent *pevent,
 529                                    pevent_func_handler func,
 530                                    enum pevent_func_arg_type ret_type,
 531                                    char *name, ...);
 532
 533 struct format_field *pevent_find_common_field(struct event_format *event, const char *name);
 534 struct format_field *pevent_find_field(struct event_format *event, const char *name);
 535 struct format_field *pevent_find_any_field(struct event_format *event, const char *name);
 536
 537 const char *pevent_find_function(struct pevent *pevent, unsigned long long addr);
 538 unsigned long long
 539 pevent_find_function_address(struct pevent *pevent, unsigned long long addr);
 540 unsigned long long pevent_read_number(struct pevent *pevent, const void *ptr, int size);
 541 int pevent_read_number_field(struct format_field *field, const void *data,
 542                              unsigned long long *value);
 543
 544 struct event_format *pevent_find_event(struct pevent *pevent, int id);
 545
 546 struct event_format *
 547 pevent_find_event_by_name(struct pevent *pevent, const char *sys, const char *name);
 548
 549 void pevent_data_lat_fmt(struct pevent *pevent,
 550                          struct trace_seq *s, struct pevent_record *record);
 551 int pevent_data_type(struct pevent *pevent, struct pevent_record *rec);
 552 struct event_format *pevent_data_event_from_type(struct pevent *pevent, int type);
 553 int pevent_data_pid(struct pevent *pevent, struct pevent_record *rec);
 554 const char *pevent_data_comm_from_pid(struct pevent *pevent, int pid);
 555 void pevent_event_info(struct trace_seq *s, struct event_format *event,
 556                        struct pevent_record *record);
 557
 558 struct event_format **pevent_list_events(struct pevent *pevent, enum event_sort_type);
 559 struct format_field **pevent_event_common_fields(struct event_format *event);
 560 struct format_field **pevent_event_fields(struct event_format *event);
 561
 562 static inline int pevent_get_cpus(struct pevent *pevent)
 563 {
 564         return pevent->cpus;
 565 }
 566
 567 static inline void pevent_set_cpus(struct pevent *pevent, int cpus)
 568 {
 569         pevent->cpus = cpus;
 570 }
 571
 572 static inline int pevent_get_long_size(struct pevent *pevent)
 573 {
 574         return pevent->long_size;
 575 }
 576
 577 static inline void pevent_set_long_size(struct pevent *pevent, int long_size)
 578 {
 579         pevent->long_size = long_size;
 580 }
 581
 582 static inline int pevent_is_file_bigendian(struct pevent *pevent)
 583 {
 584         return pevent->file_bigendian;
 585 }
 586
 587 static inline void pevent_set_file_bigendian(struct pevent *pevent, int endian)
 588 {
 589         pevent->file_bigendian = endian;
 590 }
 591
 592 static inline int pevent_is_host_bigendian(struct pevent *pevent)
 593 {
 594         return pevent->host_bigendian;
 595 }
 596
 597 static inline void pevent_set_host_bigendian(struct pevent *pevent, int endian)
 598 {
 599         pevent->host_bigendian = endian;
 600 }
 601
 602 static inline int pevent_is_latency_format(struct pevent *pevent)
 603 {
 604         return pevent->latency_format;
 605 }
 606
 607 static inline void pevent_set_latency_format(struct pevent *pevent, int lat)
 608 {
 609         pevent->latency_format = lat;
 610 }
 611
 612 struct pevent *pevent_alloc(void);
 613 void pevent_free(struct pevent *pevent);
 614 void pevent_ref(struct pevent *pevent);
 615 void pevent_unref(struct pevent *pevent);
 616
 617 /* access to the internal parser */
 618 void pevent_buffer_init(const char *buf, unsigned long long size);
 619 enum event_type pevent_read_token(char **tok);
 620 void pevent_free_token(char *token);
 621 int pevent_peek_char(void);
 622 const char *pevent_get_input_buf(void);
 623 unsigned long long pevent_get_input_buf_ptr(void);
 624
 625 /* for debugging */
 626 void pevent_print_funcs(struct pevent *pevent);
 627 void pevent_print_printk(struct pevent *pevent);
 628
 629 /* ----------------------- filtering ----------------------- */
 630
 631 enum filter_boolean_type {
 632         FILTER_FALSE,
 633         FILTER_TRUE,
 634 };
 635
 636 enum filter_op_type {
 637         FILTER_OP_AND = 1,
 638         FILTER_OP_OR,
 639         FILTER_OP_NOT,
 640 };
 641
 642 enum filter_cmp_type {
 643         FILTER_CMP_NONE,
 644         FILTER_CMP_EQ,
 645         FILTER_CMP_NE,
 646         FILTER_CMP_GT,
 647         FILTER_CMP_LT,
 648         FILTER_CMP_GE,
 649         FILTER_CMP_LE,
 650         FILTER_CMP_MATCH,
 651         FILTER_CMP_NOT_MATCH,
 652         FILTER_CMP_REGEX,
 653         FILTER_CMP_NOT_REGEX,
 654 };
 655
 656 enum filter_exp_type {
 657         FILTER_EXP_NONE,
 658         FILTER_EXP_ADD,
 659         FILTER_EXP_SUB,
 660         FILTER_EXP_MUL,
 661         FILTER_EXP_DIV,
 662         FILTER_EXP_MOD,
 663         FILTER_EXP_RSHIFT,
 664         FILTER_EXP_LSHIFT,
 665         FILTER_EXP_AND,
 666         FILTER_EXP_OR,
 667         FILTER_EXP_XOR,
 668         FILTER_EXP_NOT,
 669 };
 670
 671 enum filter_arg_type {
 672         FILTER_ARG_NONE,
 673         FILTER_ARG_BOOLEAN,
 674         FILTER_ARG_VALUE,
 675         FILTER_ARG_FIELD,
 676         FILTER_ARG_EXP,
 677         FILTER_ARG_OP,
 678         FILTER_ARG_NUM,
 679         FILTER_ARG_STR,
 680 };
 681
 682 enum filter_value_type {
 683         FILTER_NUMBER,
 684         FILTER_STRING,
 685         FILTER_CHAR
 686 };
 687
 688 struct fliter_arg;
 689
 690 struct filter_arg_boolean {
 691         enum filter_boolean_type        value;
 692 };
 693
 694 struct filter_arg_field {
 695         struct format_field     *field;
 696 };
 697
 698 struct filter_arg_value {
 699         enum filter_value_type  type;
 700         union {
 701                 char                    *str;
 702                 unsigned long long      val;
 703         };
 704 };
 705
 706 struct filter_arg_op {
 707         enum filter_op_type     type;
 708         struct filter_arg       *left;
 709         struct filter_arg       *right;
 710 };
 711
 712 struct filter_arg_exp {
 713         enum filter_exp_type    type;
 714         struct filter_arg       *left;
 715         struct filter_arg       *right;
 716 };
 717
 718 struct filter_arg_num {
 719         enum filter_cmp_type    type;
 720         struct filter_arg       *left;
 721         struct filter_arg       *right;
 722 };
 723
 724 struct filter_arg_str {
 725         enum filter_cmp_type    type;
 726         struct format_field     *field;
 727         char                    *val;
 728         char                    *buffer;
 729         regex_t                 reg;
 730 };
 731
 732 struct filter_arg {
 733         enum filter_arg_type    type;
 734         union {
 735                 struct filter_arg_boolean       boolean;
 736                 struct filter_arg_field         field;
 737                 struct filter_arg_value         value;
 738                 struct filter_arg_op            op;
 739                 struct filter_arg_exp           exp;
 740                 struct filter_arg_num           num;
 741                 struct filter_arg_str           str;
 742         };
 743 };
 744
 745 struct filter_type {
 746         int                     event_id;
 747         struct event_format     *event;
 748         struct filter_arg       *filter;
 749 };
 750
 751 struct event_filter {
 752         struct pevent           *pevent;
 753         int                     filters;
 754         struct filter_type      *event_filters;
 755 };
 756
 757 struct event_filter *pevent_filter_alloc(struct pevent *pevent);
 758
 759 #define FILTER_NONE             -2
 760 #define FILTER_NOEXIST          -1
 761 #define FILTER_MISS             0
 762 #define FILTER_MATCH            1
 763
 764 enum filter_trivial_type {
 765         FILTER_TRIVIAL_FALSE,
 766         FILTER_TRIVIAL_TRUE,
 767         FILTER_TRIVIAL_BOTH,
 768 };
 769
 770 int pevent_filter_add_filter_str(struct event_filter *filter,
 771                                  const char *filter_str,
 772                                  char **error_str);
 773
 774
 775 int pevent_filter_match(struct event_filter *filter,
 776                         struct pevent_record *record);
 777
 778 int pevent_event_filtered(struct event_filter *filter,
 779                           int event_id);
 780
 781 void pevent_filter_reset(struct event_filter *filter);
 782
 783 void pevent_filter_clear_trivial(struct event_filter *filter,
 784                                  enum filter_trivial_type type);
 785
 786 void pevent_filter_free(struct event_filter *filter);
 787
 788 char *pevent_filter_make_string(struct event_filter *filter, int event_id);
 789
 790 int pevent_filter_remove_event(struct event_filter *filter,
 791                                int event_id);
 792
 793 int pevent_filter_event_has_trivial(struct event_filter *filter,
 794                                     int event_id,
 795                                     enum filter_trivial_type type);
 796
 797 int pevent_filter_copy(struct event_filter *dest, struct event_filter *source);
 798
 799 int pevent_update_trivial(struct event_filter *dest, struct event_filter *source,
 800                           enum filter_trivial_type type);
 801
 802 int pevent_filter_compare(struct event_filter *filter1, struct event_filter *filter2);
 803
 804 #endif /* _PARSE_EVENTS_H */