Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 1 | /* |
Ingo Molnar | 133dc4c | 2010-11-16 18:45:39 +0100 | [diff] [blame] | 2 | * trace-event-perl. Feed perf script events to an embedded Perl interpreter. |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2009 Tom Zanussi <tzanussi@gmail.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | #include <stdlib.h> |
| 24 | #include <string.h> |
| 25 | #include <ctype.h> |
| 26 | #include <errno.h> |
| 27 | |
Tom Zanussi | 82d156c | 2010-01-27 02:27:55 -0600 | [diff] [blame] | 28 | #include "../../perf.h" |
| 29 | #include "../util.h" |
Arnaldo Carvalho de Melo | 743eb86 | 2011-11-28 07:56:39 -0200 | [diff] [blame] | 30 | #include "../thread.h" |
| 31 | #include "../event.h" |
Tom Zanussi | 82d156c | 2010-01-27 02:27:55 -0600 | [diff] [blame] | 32 | #include "../trace-event.h" |
Robert Richter | 37a058e | 2011-12-15 18:23:43 +0100 | [diff] [blame] | 33 | #include "../evsel.h" |
Tom Zanussi | 82d156c | 2010-01-27 02:27:55 -0600 | [diff] [blame] | 34 | |
| 35 | #include <EXTERN.h> |
| 36 | #include <perl.h> |
| 37 | |
| 38 | void boot_Perf__Trace__Context(pTHX_ CV *cv); |
| 39 | void boot_DynaLoader(pTHX_ CV *cv); |
| 40 | typedef PerlInterpreter * INTERP; |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 41 | |
Tom Zanussi | d1b9377 | 2009-11-25 01:15:50 -0600 | [diff] [blame] | 42 | void xs_init(pTHX); |
| 43 | |
Tom Zanussi | d1b9377 | 2009-11-25 01:15:50 -0600 | [diff] [blame] | 44 | void xs_init(pTHX) |
| 45 | { |
| 46 | const char *file = __FILE__; |
| 47 | dXSUB_SYS; |
| 48 | |
| 49 | newXS("Perf::Trace::Context::bootstrap", boot_Perf__Trace__Context, |
| 50 | file); |
| 51 | newXS("DynaLoader::boot_DynaLoader", boot_DynaLoader, file); |
| 52 | } |
| 53 | |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 54 | INTERP my_perl; |
| 55 | |
| 56 | #define FTRACE_MAX_EVENT \ |
| 57 | ((1 << (sizeof(unsigned short) * 8)) - 1) |
| 58 | |
| 59 | struct event *events[FTRACE_MAX_EVENT]; |
| 60 | |
Tom Zanussi | 82d156c | 2010-01-27 02:27:55 -0600 | [diff] [blame] | 61 | extern struct scripting_context *scripting_context; |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 62 | |
| 63 | static char *cur_field_name; |
| 64 | static int zero_flag_atom; |
| 65 | |
| 66 | static void define_symbolic_value(const char *ev_name, |
| 67 | const char *field_name, |
| 68 | const char *field_value, |
| 69 | const char *field_str) |
| 70 | { |
| 71 | unsigned long long value; |
| 72 | dSP; |
| 73 | |
| 74 | value = eval_flag(field_value); |
| 75 | |
| 76 | ENTER; |
| 77 | SAVETMPS; |
| 78 | PUSHMARK(SP); |
| 79 | |
| 80 | XPUSHs(sv_2mortal(newSVpv(ev_name, 0))); |
| 81 | XPUSHs(sv_2mortal(newSVpv(field_name, 0))); |
| 82 | XPUSHs(sv_2mortal(newSVuv(value))); |
| 83 | XPUSHs(sv_2mortal(newSVpv(field_str, 0))); |
| 84 | |
| 85 | PUTBACK; |
| 86 | if (get_cv("main::define_symbolic_value", 0)) |
| 87 | call_pv("main::define_symbolic_value", G_SCALAR); |
| 88 | SPAGAIN; |
| 89 | PUTBACK; |
| 90 | FREETMPS; |
| 91 | LEAVE; |
| 92 | } |
| 93 | |
| 94 | static void define_symbolic_values(struct print_flag_sym *field, |
| 95 | const char *ev_name, |
| 96 | const char *field_name) |
| 97 | { |
| 98 | define_symbolic_value(ev_name, field_name, field->value, field->str); |
| 99 | if (field->next) |
| 100 | define_symbolic_values(field->next, ev_name, field_name); |
| 101 | } |
| 102 | |
| 103 | static void define_symbolic_field(const char *ev_name, |
| 104 | const char *field_name) |
| 105 | { |
| 106 | dSP; |
| 107 | |
| 108 | ENTER; |
| 109 | SAVETMPS; |
| 110 | PUSHMARK(SP); |
| 111 | |
| 112 | XPUSHs(sv_2mortal(newSVpv(ev_name, 0))); |
| 113 | XPUSHs(sv_2mortal(newSVpv(field_name, 0))); |
| 114 | |
| 115 | PUTBACK; |
| 116 | if (get_cv("main::define_symbolic_field", 0)) |
| 117 | call_pv("main::define_symbolic_field", G_SCALAR); |
| 118 | SPAGAIN; |
| 119 | PUTBACK; |
| 120 | FREETMPS; |
| 121 | LEAVE; |
| 122 | } |
| 123 | |
| 124 | static void define_flag_value(const char *ev_name, |
| 125 | const char *field_name, |
| 126 | const char *field_value, |
| 127 | const char *field_str) |
| 128 | { |
| 129 | unsigned long long value; |
| 130 | dSP; |
| 131 | |
| 132 | value = eval_flag(field_value); |
| 133 | |
| 134 | ENTER; |
| 135 | SAVETMPS; |
| 136 | PUSHMARK(SP); |
| 137 | |
| 138 | XPUSHs(sv_2mortal(newSVpv(ev_name, 0))); |
| 139 | XPUSHs(sv_2mortal(newSVpv(field_name, 0))); |
| 140 | XPUSHs(sv_2mortal(newSVuv(value))); |
| 141 | XPUSHs(sv_2mortal(newSVpv(field_str, 0))); |
| 142 | |
| 143 | PUTBACK; |
| 144 | if (get_cv("main::define_flag_value", 0)) |
| 145 | call_pv("main::define_flag_value", G_SCALAR); |
| 146 | SPAGAIN; |
| 147 | PUTBACK; |
| 148 | FREETMPS; |
| 149 | LEAVE; |
| 150 | } |
| 151 | |
| 152 | static void define_flag_values(struct print_flag_sym *field, |
| 153 | const char *ev_name, |
| 154 | const char *field_name) |
| 155 | { |
| 156 | define_flag_value(ev_name, field_name, field->value, field->str); |
| 157 | if (field->next) |
| 158 | define_flag_values(field->next, ev_name, field_name); |
| 159 | } |
| 160 | |
| 161 | static void define_flag_field(const char *ev_name, |
| 162 | const char *field_name, |
| 163 | const char *delim) |
| 164 | { |
| 165 | dSP; |
| 166 | |
| 167 | ENTER; |
| 168 | SAVETMPS; |
| 169 | PUSHMARK(SP); |
| 170 | |
| 171 | XPUSHs(sv_2mortal(newSVpv(ev_name, 0))); |
| 172 | XPUSHs(sv_2mortal(newSVpv(field_name, 0))); |
| 173 | XPUSHs(sv_2mortal(newSVpv(delim, 0))); |
| 174 | |
| 175 | PUTBACK; |
| 176 | if (get_cv("main::define_flag_field", 0)) |
| 177 | call_pv("main::define_flag_field", G_SCALAR); |
| 178 | SPAGAIN; |
| 179 | PUTBACK; |
| 180 | FREETMPS; |
| 181 | LEAVE; |
| 182 | } |
| 183 | |
| 184 | static void define_event_symbols(struct event *event, |
| 185 | const char *ev_name, |
| 186 | struct print_arg *args) |
| 187 | { |
| 188 | switch (args->type) { |
| 189 | case PRINT_NULL: |
| 190 | break; |
| 191 | case PRINT_ATOM: |
| 192 | define_flag_value(ev_name, cur_field_name, "0", |
| 193 | args->atom.atom); |
| 194 | zero_flag_atom = 0; |
| 195 | break; |
| 196 | case PRINT_FIELD: |
| 197 | if (cur_field_name) |
| 198 | free(cur_field_name); |
| 199 | cur_field_name = strdup(args->field.name); |
| 200 | break; |
| 201 | case PRINT_FLAGS: |
| 202 | define_event_symbols(event, ev_name, args->flags.field); |
| 203 | define_flag_field(ev_name, cur_field_name, args->flags.delim); |
| 204 | define_flag_values(args->flags.flags, ev_name, cur_field_name); |
| 205 | break; |
| 206 | case PRINT_SYMBOL: |
| 207 | define_event_symbols(event, ev_name, args->symbol.field); |
| 208 | define_symbolic_field(ev_name, cur_field_name); |
| 209 | define_symbolic_values(args->symbol.symbols, ev_name, |
| 210 | cur_field_name); |
| 211 | break; |
Frederic Weisbecker | e326e75 | 2012-05-22 16:30:48 +0200 | [diff] [blame^] | 212 | case PRINT_BSTRING: |
| 213 | case PRINT_DYNAMIC_ARRAY: |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 214 | case PRINT_STRING: |
| 215 | break; |
| 216 | case PRINT_TYPE: |
| 217 | define_event_symbols(event, ev_name, args->typecast.item); |
| 218 | break; |
| 219 | case PRINT_OP: |
| 220 | if (strcmp(args->op.op, ":") == 0) |
| 221 | zero_flag_atom = 1; |
| 222 | define_event_symbols(event, ev_name, args->op.left); |
| 223 | define_event_symbols(event, ev_name, args->op.right); |
| 224 | break; |
Frederic Weisbecker | e326e75 | 2012-05-22 16:30:48 +0200 | [diff] [blame^] | 225 | case PRINT_FUNC: |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 226 | default: |
Frederic Weisbecker | e326e75 | 2012-05-22 16:30:48 +0200 | [diff] [blame^] | 227 | pr_err("Unsupported print arg type\n"); |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 228 | /* we should warn... */ |
| 229 | return; |
| 230 | } |
| 231 | |
| 232 | if (args->next) |
| 233 | define_event_symbols(event, ev_name, args->next); |
| 234 | } |
| 235 | |
| 236 | static inline struct event *find_cache_event(int type) |
| 237 | { |
| 238 | static char ev_name[256]; |
| 239 | struct event *event; |
| 240 | |
| 241 | if (events[type]) |
| 242 | return events[type]; |
| 243 | |
| 244 | events[type] = event = trace_find_event(type); |
| 245 | if (!event) |
| 246 | return NULL; |
| 247 | |
| 248 | sprintf(ev_name, "%s::%s", event->system, event->name); |
| 249 | |
| 250 | define_event_symbols(event, ev_name, event->print_fmt.args); |
| 251 | |
| 252 | return event; |
| 253 | } |
| 254 | |
Robert Richter | 37a058e | 2011-12-15 18:23:43 +0100 | [diff] [blame] | 255 | static void perl_process_tracepoint(union perf_event *pevent __unused, |
| 256 | struct perf_sample *sample, |
| 257 | struct perf_evsel *evsel, |
| 258 | struct machine *machine __unused, |
| 259 | struct thread *thread) |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 260 | { |
| 261 | struct format_field *field; |
| 262 | static char handler[256]; |
| 263 | unsigned long long val; |
| 264 | unsigned long s, ns; |
| 265 | struct event *event; |
| 266 | int type; |
| 267 | int pid; |
David Ahern | be6d842 | 2011-03-09 22:23:23 -0700 | [diff] [blame] | 268 | int cpu = sample->cpu; |
| 269 | void *data = sample->raw_data; |
| 270 | unsigned long long nsecs = sample->time; |
| 271 | char *comm = thread->comm; |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 272 | |
| 273 | dSP; |
| 274 | |
Robert Richter | 37a058e | 2011-12-15 18:23:43 +0100 | [diff] [blame] | 275 | if (evsel->attr.type != PERF_TYPE_TRACEPOINT) |
| 276 | return; |
| 277 | |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 278 | type = trace_parse_common_type(data); |
| 279 | |
| 280 | event = find_cache_event(type); |
| 281 | if (!event) |
| 282 | die("ug! no event found for type %d", type); |
| 283 | |
| 284 | pid = trace_parse_common_pid(data); |
| 285 | |
| 286 | sprintf(handler, "%s::%s", event->system, event->name); |
| 287 | |
| 288 | s = nsecs / NSECS_PER_SEC; |
| 289 | ns = nsecs - s * NSECS_PER_SEC; |
| 290 | |
| 291 | scripting_context->event_data = data; |
| 292 | |
| 293 | ENTER; |
| 294 | SAVETMPS; |
| 295 | PUSHMARK(SP); |
| 296 | |
| 297 | XPUSHs(sv_2mortal(newSVpv(handler, 0))); |
| 298 | XPUSHs(sv_2mortal(newSViv(PTR2IV(scripting_context)))); |
| 299 | XPUSHs(sv_2mortal(newSVuv(cpu))); |
| 300 | XPUSHs(sv_2mortal(newSVuv(s))); |
| 301 | XPUSHs(sv_2mortal(newSVuv(ns))); |
| 302 | XPUSHs(sv_2mortal(newSViv(pid))); |
| 303 | XPUSHs(sv_2mortal(newSVpv(comm, 0))); |
| 304 | |
| 305 | /* common fields other than pid can be accessed via xsub fns */ |
| 306 | |
| 307 | for (field = event->format.fields; field; field = field->next) { |
| 308 | if (field->flags & FIELD_IS_STRING) { |
| 309 | int offset; |
| 310 | if (field->flags & FIELD_IS_DYNAMIC) { |
| 311 | offset = *(int *)(data + field->offset); |
| 312 | offset &= 0xffff; |
| 313 | } else |
| 314 | offset = field->offset; |
| 315 | XPUSHs(sv_2mortal(newSVpv((char *)data + offset, 0))); |
| 316 | } else { /* FIELD_IS_NUMERIC */ |
| 317 | val = read_size(data + field->offset, field->size); |
| 318 | if (field->flags & FIELD_IS_SIGNED) { |
| 319 | XPUSHs(sv_2mortal(newSViv(val))); |
| 320 | } else { |
| 321 | XPUSHs(sv_2mortal(newSVuv(val))); |
| 322 | } |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | PUTBACK; |
Tom Zanussi | d1b9377 | 2009-11-25 01:15:50 -0600 | [diff] [blame] | 327 | |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 328 | if (get_cv(handler, 0)) |
| 329 | call_pv(handler, G_SCALAR); |
| 330 | else if (get_cv("main::trace_unhandled", 0)) { |
| 331 | XPUSHs(sv_2mortal(newSVpv(handler, 0))); |
| 332 | XPUSHs(sv_2mortal(newSViv(PTR2IV(scripting_context)))); |
| 333 | XPUSHs(sv_2mortal(newSVuv(cpu))); |
| 334 | XPUSHs(sv_2mortal(newSVuv(nsecs))); |
| 335 | XPUSHs(sv_2mortal(newSViv(pid))); |
| 336 | XPUSHs(sv_2mortal(newSVpv(comm, 0))); |
| 337 | call_pv("main::trace_unhandled", G_SCALAR); |
| 338 | } |
| 339 | SPAGAIN; |
| 340 | PUTBACK; |
| 341 | FREETMPS; |
| 342 | LEAVE; |
| 343 | } |
| 344 | |
Robert Richter | 37a058e | 2011-12-15 18:23:43 +0100 | [diff] [blame] | 345 | static void perl_process_event_generic(union perf_event *pevent __unused, |
| 346 | struct perf_sample *sample, |
| 347 | struct perf_evsel *evsel __unused, |
| 348 | struct machine *machine __unused, |
| 349 | struct thread *thread __unused) |
| 350 | { |
| 351 | dSP; |
| 352 | |
| 353 | if (!get_cv("process_event", 0)) |
| 354 | return; |
| 355 | |
| 356 | ENTER; |
| 357 | SAVETMPS; |
| 358 | PUSHMARK(SP); |
| 359 | XPUSHs(sv_2mortal(newSVpvn((const char *)pevent, pevent->header.size))); |
| 360 | XPUSHs(sv_2mortal(newSVpvn((const char *)&evsel->attr, sizeof(evsel->attr)))); |
| 361 | XPUSHs(sv_2mortal(newSVpvn((const char *)sample, sizeof(*sample)))); |
| 362 | XPUSHs(sv_2mortal(newSVpvn((const char *)sample->raw_data, sample->raw_size))); |
| 363 | PUTBACK; |
| 364 | call_pv("process_event", G_SCALAR); |
| 365 | SPAGAIN; |
| 366 | PUTBACK; |
| 367 | FREETMPS; |
| 368 | LEAVE; |
| 369 | } |
| 370 | |
| 371 | static void perl_process_event(union perf_event *pevent, |
| 372 | struct perf_sample *sample, |
| 373 | struct perf_evsel *evsel, |
| 374 | struct machine *machine, |
| 375 | struct thread *thread) |
| 376 | { |
| 377 | perl_process_tracepoint(pevent, sample, evsel, machine, thread); |
| 378 | perl_process_event_generic(pevent, sample, evsel, machine, thread); |
| 379 | } |
| 380 | |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 381 | static void run_start_sub(void) |
| 382 | { |
| 383 | dSP; /* access to Perl stack */ |
| 384 | PUSHMARK(SP); |
| 385 | |
| 386 | if (get_cv("main::trace_begin", 0)) |
| 387 | call_pv("main::trace_begin", G_DISCARD | G_NOARGS); |
| 388 | } |
| 389 | |
| 390 | /* |
| 391 | * Start trace script |
| 392 | */ |
Tom Zanussi | 586bc5c | 2009-12-15 02:53:35 -0600 | [diff] [blame] | 393 | static int perl_start_script(const char *script, int argc, const char **argv) |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 394 | { |
Tom Zanussi | 586bc5c | 2009-12-15 02:53:35 -0600 | [diff] [blame] | 395 | const char **command_line; |
| 396 | int i, err = 0; |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 397 | |
Tom Zanussi | 586bc5c | 2009-12-15 02:53:35 -0600 | [diff] [blame] | 398 | command_line = malloc((argc + 2) * sizeof(const char *)); |
| 399 | command_line[0] = ""; |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 400 | command_line[1] = script; |
Tom Zanussi | 586bc5c | 2009-12-15 02:53:35 -0600 | [diff] [blame] | 401 | for (i = 2; i < argc + 2; i++) |
| 402 | command_line[i] = argv[i - 2]; |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 403 | |
| 404 | my_perl = perl_alloc(); |
| 405 | perl_construct(my_perl); |
| 406 | |
Tom Zanussi | 586bc5c | 2009-12-15 02:53:35 -0600 | [diff] [blame] | 407 | if (perl_parse(my_perl, xs_init, argc + 2, (char **)command_line, |
| 408 | (char **)NULL)) { |
| 409 | err = -1; |
| 410 | goto error; |
| 411 | } |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 412 | |
Tom Zanussi | 8f11d85 | 2009-12-15 02:53:37 -0600 | [diff] [blame] | 413 | if (perl_run(my_perl)) { |
| 414 | err = -1; |
| 415 | goto error; |
| 416 | } |
| 417 | |
Tom Zanussi | 586bc5c | 2009-12-15 02:53:35 -0600 | [diff] [blame] | 418 | if (SvTRUE(ERRSV)) { |
| 419 | err = -1; |
| 420 | goto error; |
| 421 | } |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 422 | |
| 423 | run_start_sub(); |
| 424 | |
Tom Zanussi | 586bc5c | 2009-12-15 02:53:35 -0600 | [diff] [blame] | 425 | free(command_line); |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 426 | return 0; |
Tom Zanussi | 586bc5c | 2009-12-15 02:53:35 -0600 | [diff] [blame] | 427 | error: |
| 428 | perl_free(my_perl); |
| 429 | free(command_line); |
| 430 | |
| 431 | return err; |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 432 | } |
| 433 | |
| 434 | /* |
| 435 | * Stop trace script |
| 436 | */ |
| 437 | static int perl_stop_script(void) |
| 438 | { |
| 439 | dSP; /* access to Perl stack */ |
| 440 | PUSHMARK(SP); |
| 441 | |
| 442 | if (get_cv("main::trace_end", 0)) |
| 443 | call_pv("main::trace_end", G_DISCARD | G_NOARGS); |
| 444 | |
| 445 | perl_destruct(my_perl); |
| 446 | perl_free(my_perl); |
| 447 | |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 448 | return 0; |
| 449 | } |
| 450 | |
| 451 | static int perl_generate_script(const char *outfile) |
| 452 | { |
| 453 | struct event *event = NULL; |
| 454 | struct format_field *f; |
| 455 | char fname[PATH_MAX]; |
| 456 | int not_first, count; |
| 457 | FILE *ofp; |
| 458 | |
| 459 | sprintf(fname, "%s.pl", outfile); |
| 460 | ofp = fopen(fname, "w"); |
| 461 | if (ofp == NULL) { |
| 462 | fprintf(stderr, "couldn't open %s\n", fname); |
| 463 | return -1; |
| 464 | } |
| 465 | |
Ingo Molnar | 133dc4c | 2010-11-16 18:45:39 +0100 | [diff] [blame] | 466 | fprintf(ofp, "# perf script event handlers, " |
| 467 | "generated by perf script -g perl\n"); |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 468 | |
| 469 | fprintf(ofp, "# Licensed under the terms of the GNU GPL" |
| 470 | " License version 2\n\n"); |
| 471 | |
| 472 | fprintf(ofp, "# The common_* event handler fields are the most useful " |
| 473 | "fields common to\n"); |
| 474 | |
| 475 | fprintf(ofp, "# all events. They don't necessarily correspond to " |
| 476 | "the 'common_*' fields\n"); |
| 477 | |
| 478 | fprintf(ofp, "# in the format files. Those fields not available as " |
| 479 | "handler params can\n"); |
| 480 | |
| 481 | fprintf(ofp, "# be retrieved using Perl functions of the form " |
| 482 | "common_*($context).\n"); |
| 483 | |
| 484 | fprintf(ofp, "# See Context.pm for the list of available " |
| 485 | "functions.\n\n"); |
| 486 | |
| 487 | fprintf(ofp, "use lib \"$ENV{'PERF_EXEC_PATH'}/scripts/perl/" |
| 488 | "Perf-Trace-Util/lib\";\n"); |
| 489 | |
| 490 | fprintf(ofp, "use lib \"./Perf-Trace-Util/lib\";\n"); |
| 491 | fprintf(ofp, "use Perf::Trace::Core;\n"); |
| 492 | fprintf(ofp, "use Perf::Trace::Context;\n"); |
| 493 | fprintf(ofp, "use Perf::Trace::Util;\n\n"); |
| 494 | |
| 495 | fprintf(ofp, "sub trace_begin\n{\n\t# optional\n}\n\n"); |
| 496 | fprintf(ofp, "sub trace_end\n{\n\t# optional\n}\n\n"); |
| 497 | |
| 498 | while ((event = trace_find_next_event(event))) { |
| 499 | fprintf(ofp, "sub %s::%s\n{\n", event->system, event->name); |
| 500 | fprintf(ofp, "\tmy ("); |
| 501 | |
| 502 | fprintf(ofp, "$event_name, "); |
| 503 | fprintf(ofp, "$context, "); |
| 504 | fprintf(ofp, "$common_cpu, "); |
| 505 | fprintf(ofp, "$common_secs, "); |
| 506 | fprintf(ofp, "$common_nsecs,\n"); |
| 507 | fprintf(ofp, "\t $common_pid, "); |
| 508 | fprintf(ofp, "$common_comm,\n\t "); |
| 509 | |
| 510 | not_first = 0; |
| 511 | count = 0; |
| 512 | |
| 513 | for (f = event->format.fields; f; f = f->next) { |
| 514 | if (not_first++) |
| 515 | fprintf(ofp, ", "); |
| 516 | if (++count % 5 == 0) |
| 517 | fprintf(ofp, "\n\t "); |
| 518 | |
| 519 | fprintf(ofp, "$%s", f->name); |
| 520 | } |
| 521 | fprintf(ofp, ") = @_;\n\n"); |
| 522 | |
| 523 | fprintf(ofp, "\tprint_header($event_name, $common_cpu, " |
| 524 | "$common_secs, $common_nsecs,\n\t " |
| 525 | "$common_pid, $common_comm);\n\n"); |
| 526 | |
| 527 | fprintf(ofp, "\tprintf(\""); |
| 528 | |
| 529 | not_first = 0; |
| 530 | count = 0; |
| 531 | |
| 532 | for (f = event->format.fields; f; f = f->next) { |
| 533 | if (not_first++) |
| 534 | fprintf(ofp, ", "); |
| 535 | if (count && count % 4 == 0) { |
| 536 | fprintf(ofp, "\".\n\t \""); |
| 537 | } |
| 538 | count++; |
| 539 | |
| 540 | fprintf(ofp, "%s=", f->name); |
| 541 | if (f->flags & FIELD_IS_STRING || |
| 542 | f->flags & FIELD_IS_FLAG || |
| 543 | f->flags & FIELD_IS_SYMBOLIC) |
| 544 | fprintf(ofp, "%%s"); |
| 545 | else if (f->flags & FIELD_IS_SIGNED) |
| 546 | fprintf(ofp, "%%d"); |
| 547 | else |
| 548 | fprintf(ofp, "%%u"); |
| 549 | } |
| 550 | |
| 551 | fprintf(ofp, "\\n\",\n\t "); |
| 552 | |
| 553 | not_first = 0; |
| 554 | count = 0; |
| 555 | |
| 556 | for (f = event->format.fields; f; f = f->next) { |
| 557 | if (not_first++) |
| 558 | fprintf(ofp, ", "); |
| 559 | |
| 560 | if (++count % 5 == 0) |
| 561 | fprintf(ofp, "\n\t "); |
| 562 | |
| 563 | if (f->flags & FIELD_IS_FLAG) { |
| 564 | if ((count - 1) % 5 != 0) { |
| 565 | fprintf(ofp, "\n\t "); |
| 566 | count = 4; |
| 567 | } |
| 568 | fprintf(ofp, "flag_str(\""); |
| 569 | fprintf(ofp, "%s::%s\", ", event->system, |
| 570 | event->name); |
| 571 | fprintf(ofp, "\"%s\", $%s)", f->name, |
| 572 | f->name); |
| 573 | } else if (f->flags & FIELD_IS_SYMBOLIC) { |
| 574 | if ((count - 1) % 5 != 0) { |
| 575 | fprintf(ofp, "\n\t "); |
| 576 | count = 4; |
| 577 | } |
| 578 | fprintf(ofp, "symbol_str(\""); |
| 579 | fprintf(ofp, "%s::%s\", ", event->system, |
| 580 | event->name); |
| 581 | fprintf(ofp, "\"%s\", $%s)", f->name, |
| 582 | f->name); |
| 583 | } else |
| 584 | fprintf(ofp, "$%s", f->name); |
| 585 | } |
| 586 | |
| 587 | fprintf(ofp, ");\n"); |
| 588 | fprintf(ofp, "}\n\n"); |
| 589 | } |
| 590 | |
| 591 | fprintf(ofp, "sub trace_unhandled\n{\n\tmy ($event_name, $context, " |
| 592 | "$common_cpu, $common_secs, $common_nsecs,\n\t " |
| 593 | "$common_pid, $common_comm) = @_;\n\n"); |
| 594 | |
| 595 | fprintf(ofp, "\tprint_header($event_name, $common_cpu, " |
| 596 | "$common_secs, $common_nsecs,\n\t $common_pid, " |
| 597 | "$common_comm);\n}\n\n"); |
| 598 | |
| 599 | fprintf(ofp, "sub print_header\n{\n" |
| 600 | "\tmy ($event_name, $cpu, $secs, $nsecs, $pid, $comm) = @_;\n\n" |
| 601 | "\tprintf(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \",\n\t " |
Robert Richter | 37a058e | 2011-12-15 18:23:43 +0100 | [diff] [blame] | 602 | "$event_name, $cpu, $secs, $nsecs, $pid, $comm);\n}\n"); |
| 603 | |
| 604 | fprintf(ofp, |
| 605 | "\n# Packed byte string args of process_event():\n" |
| 606 | "#\n" |
| 607 | "# $event:\tunion perf_event\tutil/event.h\n" |
| 608 | "# $attr:\tstruct perf_event_attr\tlinux/perf_event.h\n" |
| 609 | "# $sample:\tstruct perf_sample\tutil/event.h\n" |
| 610 | "# $raw_data:\tperf_sample->raw_data\tutil/event.h\n" |
| 611 | "\n" |
| 612 | "sub process_event\n" |
| 613 | "{\n" |
| 614 | "\tmy ($event, $attr, $sample, $raw_data) = @_;\n" |
| 615 | "\n" |
| 616 | "\tmy @event\t= unpack(\"LSS\", $event);\n" |
| 617 | "\tmy @attr\t= unpack(\"LLQQQQQLLQQ\", $attr);\n" |
| 618 | "\tmy @sample\t= unpack(\"QLLQQQQQLL\", $sample);\n" |
| 619 | "\tmy @raw_data\t= unpack(\"C*\", $raw_data);\n" |
| 620 | "\n" |
| 621 | "\tuse Data::Dumper;\n" |
| 622 | "\tprint Dumper \\@event, \\@attr, \\@sample, \\@raw_data;\n" |
| 623 | "}\n"); |
Tom Zanussi | 16c632d | 2009-11-25 01:15:48 -0600 | [diff] [blame] | 624 | |
| 625 | fclose(ofp); |
| 626 | |
| 627 | fprintf(stderr, "generated Perl script: %s\n", fname); |
| 628 | |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | struct scripting_ops perl_scripting_ops = { |
| 633 | .name = "Perl", |
| 634 | .start_script = perl_start_script, |
| 635 | .stop_script = perl_stop_script, |
| 636 | .process_event = perl_process_event, |
| 637 | .generate_script = perl_generate_script, |
| 638 | }; |