Upstream | cc2ee17 | 1970-01-12 13:46:40 +0000 | [diff] [blame^] | 1 | /** |
| 2 | * @file callgraph_container.cpp |
| 3 | * Container associating symbols and caller/caller symbols |
| 4 | * |
| 5 | * @remark Copyright 2004 OProfile authors |
| 6 | * @remark Read the file COPYING |
| 7 | * |
| 8 | * @author Philippe Elie |
| 9 | * @author John Levon |
| 10 | */ |
| 11 | |
| 12 | #include <cstdlib> |
| 13 | |
| 14 | #include <map> |
| 15 | #include <set> |
| 16 | #include <algorithm> |
| 17 | #include <iterator> |
| 18 | #include <string> |
| 19 | #include <iostream> |
| 20 | #include <numeric> |
| 21 | |
| 22 | #include "callgraph_container.h" |
| 23 | #include "cverb.h" |
| 24 | #include "parse_filename.h" |
| 25 | #include "profile_container.h" |
| 26 | #include "arrange_profiles.h" |
| 27 | #include "populate.h" |
| 28 | #include "string_filter.h" |
| 29 | #include "op_bfd.h" |
| 30 | #include "op_sample_file.h" |
| 31 | #include "locate_images.h" |
| 32 | |
| 33 | using namespace std; |
| 34 | |
| 35 | namespace { |
| 36 | |
| 37 | bool operator==(cg_symbol const & lhs, cg_symbol const & rhs) |
| 38 | { |
| 39 | less_symbol cmp_symb; |
| 40 | return !cmp_symb(lhs, rhs) && !cmp_symb(rhs, lhs); |
| 41 | } |
| 42 | |
| 43 | |
| 44 | // we store {caller,callee} inside a single u64 |
| 45 | odb_key_t caller_to_key(u32 value) |
| 46 | { |
| 47 | return odb_key_t(value) << 32; |
| 48 | } |
| 49 | |
| 50 | |
| 51 | u32 key_to_callee(odb_key_t key) |
| 52 | { |
| 53 | return key & 0xffffffff; |
| 54 | } |
| 55 | |
| 56 | |
| 57 | bool compare_by_callee_vma(pair<odb_key_t, odb_value_t> const & lhs, |
| 58 | pair<odb_key_t, odb_value_t> const & rhs) |
| 59 | { |
| 60 | return (key_to_callee(lhs.first)) < (key_to_callee(rhs.first)); |
| 61 | } |
| 62 | |
| 63 | |
| 64 | /* |
| 65 | * We need 2 comparators for callgraph to get the desired output: |
| 66 | * |
| 67 | * caller_with_few_samples |
| 68 | * caller_with_many_samples |
| 69 | * function_with_many_samples |
| 70 | * callee_with_many_samples |
| 71 | * callee_with_few_samples |
| 72 | */ |
| 73 | |
| 74 | bool |
| 75 | compare_arc_count(symbol_entry const & lhs, symbol_entry const & rhs) |
| 76 | { |
| 77 | return lhs.sample.counts[0] < rhs.sample.counts[0]; |
| 78 | } |
| 79 | |
| 80 | |
| 81 | bool |
| 82 | compare_arc_count_reverse(symbol_entry const & lhs, symbol_entry const & rhs) |
| 83 | { |
| 84 | return rhs.sample.counts[0] < lhs.sample.counts[0]; |
| 85 | } |
| 86 | |
| 87 | |
| 88 | // find the nearest bfd symbol for the given file offset and check it's |
| 89 | // in range |
| 90 | op_bfd_symbol const * |
| 91 | get_symbol_by_filepos(op_bfd const & bfd, u32 bfd_offset, |
| 92 | vma_t offset, symbol_index_t & i) |
| 93 | { |
| 94 | offset += bfd_offset; |
| 95 | op_bfd_symbol tmpsym(offset, 0, string()); |
| 96 | |
| 97 | // sorted by filepos so this will find the nearest |
| 98 | vector<op_bfd_symbol>::const_iterator it = |
| 99 | upper_bound(bfd.syms.begin(), bfd.syms.end(), tmpsym); |
| 100 | |
| 101 | if (it != bfd.syms.begin()) |
| 102 | --it; |
| 103 | |
| 104 | if (it == bfd.syms.end()) { |
| 105 | cerr << "get_symbol_by_filepos: no symbols at all?" << endl; |
| 106 | abort(); |
| 107 | } |
| 108 | |
| 109 | // if the offset is past the end of the symbol, we didn't find one |
| 110 | u32 const end_offset = it->size() + it->filepos(); |
| 111 | |
| 112 | if (offset >= end_offset) { |
| 113 | // let's be verbose for now |
| 114 | cerr << "warning: dropping hyperspace sample at offset " |
| 115 | << hex << offset << " >= " << end_offset |
| 116 | << " for binary " << bfd.get_filename() << dec << endl; |
| 117 | return NULL; |
| 118 | } |
| 119 | |
| 120 | i = distance(bfd.syms.begin(), it); |
| 121 | return &(*it); |
| 122 | } |
| 123 | |
| 124 | |
| 125 | /// temporary caller and callee data held during processing |
| 126 | class call_data { |
| 127 | public: |
| 128 | call_data(profile_container const & p, profile_t const & pr, |
| 129 | op_bfd const & bfd, u32 boff, image_name_id iid, |
| 130 | image_name_id aid, bool debug_info) |
| 131 | : pc(p), profile(pr), b(bfd), boffset(boff), image(iid), |
| 132 | app(aid), debug(debug_info) {} |
| 133 | |
| 134 | /// point to a caller symbol |
| 135 | void caller_sym(symbol_index_t i) { |
| 136 | sym = symbol_entry(); |
| 137 | |
| 138 | unsigned long start; |
| 139 | unsigned long end; |
| 140 | b.get_symbol_range(i, start, end); |
| 141 | |
| 142 | samples.clear(); |
| 143 | |
| 144 | // see profile_t::samples_range() for why we need this check |
| 145 | if (start > boffset) { |
| 146 | profile_t::iterator_pair p_it = profile.samples_range( |
| 147 | caller_to_key(start - boffset), |
| 148 | caller_to_key(end - boffset)); |
| 149 | |
| 150 | // Our odb_key_t contain (from_eip << 32 | to_eip), |
| 151 | // the range of keys we selected above contains one |
| 152 | // caller but different callees, and due to the |
| 153 | // ordering callee offsets are not consecutive: so |
| 154 | // we must sort them first. |
| 155 | |
| 156 | for (; p_it.first != p_it.second; ++p_it.first) { |
| 157 | samples.push_back(make_pair(p_it.first.vma(), |
| 158 | p_it.first.count())); |
| 159 | } |
| 160 | |
| 161 | sort(samples.begin(), samples.end(), |
| 162 | compare_by_callee_vma); |
| 163 | } |
| 164 | |
| 165 | sym.size = end - start; |
| 166 | sym.name = symbol_names.create(b.syms[i].name()); |
| 167 | sym.sample.vma = b.sym_offset(i, start) + b.syms[i].vma(); |
| 168 | |
| 169 | finish_sym(i, start); |
| 170 | |
| 171 | if (cverb << vdebug) { |
| 172 | cverb << vdebug << hex << "Caller sym: " |
| 173 | << b.syms[i].name() << " filepos " << start |
| 174 | << "-" << end << dec << endl; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | /// point to a callee symbol |
| 179 | bool callee_sym(u32 off) { |
| 180 | sym = symbol_entry(); |
| 181 | |
| 182 | symbol_index_t i; |
| 183 | op_bfd_symbol const * bfdsym = |
| 184 | get_symbol_by_filepos(b, boffset, off, i); |
| 185 | |
| 186 | if (!bfdsym) |
| 187 | return false; |
| 188 | |
| 189 | callee_end = bfdsym->size() + bfdsym->filepos() - boffset; |
| 190 | |
| 191 | sym.size = bfdsym->size(); |
| 192 | sym.name = symbol_names.create(bfdsym->name()); |
| 193 | sym.sample.vma = bfdsym->vma(); |
| 194 | |
| 195 | finish_sym(i, bfdsym->filepos()); |
| 196 | |
| 197 | if (cverb << vdebug) { |
| 198 | cverb << vdebug << hex << "Callee sym: " |
| 199 | << bfdsym->name() << " filepos " |
| 200 | << bfdsym->filepos() << "-" |
| 201 | << (bfdsym->filepos() + bfdsym->size()) |
| 202 | << dec << endl; |
| 203 | } |
| 204 | return true; |
| 205 | } |
| 206 | |
| 207 | void verbose_bfd(string const & prefix) const { |
| 208 | cverb << vdebug << prefix << " " << b.get_filename() |
| 209 | << " offset " << boffset << " app " |
| 210 | << image_names.name(app) << endl; |
| 211 | } |
| 212 | |
| 213 | typedef vector<pair<odb_key_t, odb_value_t> > samples_t; |
| 214 | |
| 215 | typedef samples_t::const_iterator const_iterator; |
| 216 | |
| 217 | samples_t samples; |
| 218 | symbol_entry sym; |
| 219 | u32 callee_end; |
| 220 | |
| 221 | private: |
| 222 | /// fill in the rest of the sym |
| 223 | void finish_sym(symbol_index_t i, unsigned long start) { |
| 224 | sym.image_name = image; |
| 225 | sym.app_name = app; |
| 226 | symbol_entry const * self = pc.find(sym); |
| 227 | if (self) |
| 228 | sym.sample.counts = self->sample.counts; |
| 229 | |
| 230 | if (debug) { |
| 231 | string filename; |
| 232 | file_location & loc = sym.sample.file_loc; |
| 233 | if (b.get_linenr(i, start, filename, loc.linenr)) |
| 234 | loc.filename = debug_names.create(filename); |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | profile_container const & pc; |
| 239 | profile_t const & profile; |
| 240 | op_bfd const & b; |
| 241 | u32 boffset; |
| 242 | image_name_id image; |
| 243 | image_name_id app; |
| 244 | bool debug; |
| 245 | }; |
| 246 | |
| 247 | |
| 248 | /// accumulate all samples for a given caller/callee pair |
| 249 | u32 |
| 250 | accumulate_callee(call_data::const_iterator & it, call_data::const_iterator end, |
| 251 | u32 callee_end) |
| 252 | { |
| 253 | u32 count = 0; |
| 254 | call_data::const_iterator const start = it; |
| 255 | |
| 256 | while (it != end) { |
| 257 | u32 offset = key_to_callee(it->first); |
| 258 | |
| 259 | if (cverb << (vdebug & vlevel1)) { |
| 260 | cverb << (vdebug & vlevel1) << hex << "offset: " |
| 261 | << offset << dec << endl; |
| 262 | } |
| 263 | |
| 264 | // stop if we pass the end of the callee |
| 265 | if (offset >= callee_end) |
| 266 | break; |
| 267 | |
| 268 | count += it->second; |
| 269 | ++it; |
| 270 | } |
| 271 | |
| 272 | // If we haven't advanced at all, then we'll get |
| 273 | // an infinite loop, so we must abort. |
| 274 | if (it == start) { |
| 275 | cerr << "failure to advance iterator\n"; |
| 276 | abort(); |
| 277 | } |
| 278 | |
| 279 | return count; |
| 280 | } |
| 281 | |
| 282 | |
| 283 | } // anonymous namespace |
| 284 | |
| 285 | |
| 286 | void arc_recorder:: |
| 287 | add(symbol_entry const & caller, symbol_entry const * callee, |
| 288 | count_array_t const & arc_count) |
| 289 | { |
| 290 | cg_data & data = sym_map[caller]; |
| 291 | |
| 292 | // If we have a callee, add it to the caller's list, then |
| 293 | // add the caller to the callee's list. |
| 294 | if (callee) { |
| 295 | data.callees[*callee] += arc_count; |
| 296 | |
| 297 | cg_data & callee_data = sym_map[*callee]; |
| 298 | |
| 299 | callee_data.callers[caller] += arc_count; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | |
| 304 | void arc_recorder::process_children(cg_symbol & sym, double threshold) |
| 305 | { |
| 306 | // generate the synthetic self entry for the symbol |
| 307 | symbol_entry self = sym; |
| 308 | |
| 309 | self.name = symbol_names.create(symbol_names.demangle(self.name) |
| 310 | + " [self]"); |
| 311 | |
| 312 | sym.total_callee_count += self.sample.counts; |
| 313 | sym.callees.push_back(self); |
| 314 | |
| 315 | sort(sym.callers.begin(), sym.callers.end(), compare_arc_count); |
| 316 | sort(sym.callees.begin(), sym.callees.end(), compare_arc_count_reverse); |
| 317 | |
| 318 | // FIXME: this relies on sort always being sample count |
| 319 | |
| 320 | cg_symbol::children::iterator cit = sym.callers.begin(); |
| 321 | cg_symbol::children::iterator cend = sym.callers.end(); |
| 322 | |
| 323 | while (cit != cend && op_ratio(cit->sample.counts[0], |
| 324 | sym.total_caller_count[0]) < threshold) |
| 325 | ++cit; |
| 326 | |
| 327 | if (cit != cend) |
| 328 | sym.callers.erase(sym.callers.begin(), cit); |
| 329 | |
| 330 | cit = sym.callees.begin(); |
| 331 | cend = sym.callees.end(); |
| 332 | |
| 333 | while (cit != cend && op_ratio(cit->sample.counts[0], |
| 334 | sym.total_callee_count[0]) >= threshold) |
| 335 | ++cit; |
| 336 | |
| 337 | if (cit != cend) |
| 338 | sym.callees.erase(cit, sym.callees.end()); |
| 339 | } |
| 340 | |
| 341 | |
| 342 | void arc_recorder:: |
| 343 | process(count_array_t total, double threshold, |
| 344 | string_filter const & sym_filter) |
| 345 | { |
| 346 | map_t::const_iterator it; |
| 347 | map_t::const_iterator end = sym_map.end(); |
| 348 | |
| 349 | for (it = sym_map.begin(); it != end; ++it) { |
| 350 | cg_symbol sym((*it).first); |
| 351 | cg_data const & data = (*it).second; |
| 352 | |
| 353 | // threshold out the main symbol if needed |
| 354 | if (op_ratio(sym.sample.counts[0], total[0]) < threshold) |
| 355 | continue; |
| 356 | |
| 357 | // FIXME: slow? |
| 358 | if (!sym_filter.match(symbol_names.demangle(sym.name))) |
| 359 | continue; |
| 360 | |
| 361 | cg_data::children::const_iterator cit; |
| 362 | cg_data::children::const_iterator cend = data.callers.end(); |
| 363 | |
| 364 | for (cit = data.callers.begin(); cit != cend; ++cit) { |
| 365 | symbol_entry csym = cit->first; |
| 366 | csym.sample.counts = cit->second; |
| 367 | sym.callers.push_back(csym); |
| 368 | sym.total_caller_count += cit->second; |
| 369 | } |
| 370 | |
| 371 | cend = data.callees.end(); |
| 372 | |
| 373 | for (cit = data.callees.begin(); cit != cend; ++cit) { |
| 374 | symbol_entry csym = cit->first; |
| 375 | csym.sample.counts = cit->second; |
| 376 | sym.callees.push_back(csym); |
| 377 | sym.total_callee_count += cit->second; |
| 378 | } |
| 379 | |
| 380 | process_children(sym, threshold); |
| 381 | |
| 382 | cg_syms.push_back(sym); |
| 383 | } |
| 384 | } |
| 385 | |
| 386 | |
| 387 | cg_collection arc_recorder::get_symbols() const |
| 388 | { |
| 389 | return cg_syms; |
| 390 | } |
| 391 | |
| 392 | |
| 393 | void callgraph_container::populate(string const & archive_path, |
| 394 | list<inverted_profile> const & iprofiles, |
| 395 | extra_images const & extra, bool debug_info, double threshold, |
| 396 | bool merge_lib, string_filter const & sym_filter) |
| 397 | { |
| 398 | // non callgraph samples container, we record sample at symbol level |
| 399 | // not at vma level. |
| 400 | profile_container pc(debug_info, false); |
| 401 | |
| 402 | list<inverted_profile>::const_iterator it; |
| 403 | list<inverted_profile>::const_iterator const end = iprofiles.end(); |
| 404 | for (it = iprofiles.begin(); it != end; ++it) { |
| 405 | // populate_caller_image take care about empty sample filename |
| 406 | populate_for_image(archive_path, pc, *it, sym_filter, 0); |
| 407 | } |
| 408 | |
| 409 | add_symbols(pc); |
| 410 | |
| 411 | total_count = pc.samples_count(); |
| 412 | |
| 413 | for (it = iprofiles.begin(); it != end; ++it) { |
| 414 | for (size_t i = 0; i < it->groups.size(); ++i) { |
| 415 | populate(archive_path, it->groups[i], it->image, extra, |
| 416 | i, pc, debug_info, merge_lib); |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | recorder.process(total_count, threshold / 100.0, sym_filter); |
| 421 | } |
| 422 | |
| 423 | |
| 424 | void callgraph_container::populate(string const & archive_path, |
| 425 | list<image_set> const & lset, |
| 426 | string const & app_image, extra_images const & extra, size_t pclass, |
| 427 | profile_container const & pc, bool debug_info, bool merge_lib) |
| 428 | { |
| 429 | list<image_set>::const_iterator lit; |
| 430 | list<image_set>::const_iterator const lend = lset.end(); |
| 431 | for (lit = lset.begin(); lit != lend; ++lit) { |
| 432 | list<profile_sample_files>::const_iterator pit; |
| 433 | list<profile_sample_files>::const_iterator pend |
| 434 | = lit->files.end(); |
| 435 | for (pit = lit->files.begin(); pit != pend; ++pit) { |
| 436 | populate(archive_path, pit->cg_files, app_image, |
| 437 | extra, pclass, pc, debug_info, merge_lib); |
| 438 | } |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | |
| 443 | void callgraph_container::populate(string const & archive_path, |
| 444 | list<string> const & cg_files, |
| 445 | string const & app_image, extra_images const & extra, size_t pclass, |
| 446 | profile_container const & pc, bool debug_info, bool merge_lib) |
| 447 | { |
| 448 | list<string>::const_iterator it; |
| 449 | list<string>::const_iterator const end = cg_files.end(); |
| 450 | for (it = cg_files.begin(); it != end; ++it) { |
| 451 | cverb << vdebug << "samples file : " << *it << endl; |
| 452 | |
| 453 | parsed_filename caller_file = parse_filename(*it); |
| 454 | string const app_name = caller_file.image; |
| 455 | |
| 456 | image_error error; |
| 457 | string caller_binary = |
| 458 | find_image_path(archive_path, caller_file.lib_image, |
| 459 | extra, error); |
| 460 | |
| 461 | if (error != image_ok) |
| 462 | report_image_error(archive_path + caller_file.lib_image, |
| 463 | error, false); |
| 464 | |
| 465 | bool caller_bfd_ok = true; |
| 466 | op_bfd caller_bfd(archive_path, caller_binary, |
| 467 | string_filter(), caller_bfd_ok); |
| 468 | if (!caller_bfd_ok) |
| 469 | report_image_error(caller_binary, |
| 470 | image_format_failure, false); |
| 471 | |
| 472 | parsed_filename callee_file = parse_filename(*it); |
| 473 | |
| 474 | string callee_binary = |
| 475 | find_image_path(archive_path, callee_file.cg_image, |
| 476 | extra, error); |
| 477 | if (error != image_ok) |
| 478 | report_image_error(callee_file.cg_image, error, false); |
| 479 | |
| 480 | bool callee_bfd_ok = true; |
| 481 | op_bfd callee_bfd(archive_path, callee_binary, |
| 482 | string_filter(), callee_bfd_ok); |
| 483 | if (!callee_bfd_ok) |
| 484 | report_image_error(callee_binary, |
| 485 | image_format_failure, false); |
| 486 | |
| 487 | profile_t profile; |
| 488 | // We can't use start_offset support in profile_t, give |
| 489 | // it a zero offset and we will fix that in add() |
| 490 | profile.add_sample_file(*it); |
| 491 | add(profile, caller_bfd, caller_bfd_ok, callee_bfd, |
| 492 | merge_lib ? app_image : app_name, pc, |
| 493 | debug_info, pclass); |
| 494 | } |
| 495 | } |
| 496 | |
| 497 | |
| 498 | void callgraph_container:: |
| 499 | add(profile_t const & profile, op_bfd const & caller_bfd, bool caller_bfd_ok, |
| 500 | op_bfd const & callee_bfd, string const & app_name, |
| 501 | profile_container const & pc, bool debug_info, size_t pclass) |
| 502 | { |
| 503 | string const image_name = caller_bfd.get_filename(); |
| 504 | |
| 505 | opd_header const & header = profile.get_header(); |
| 506 | |
| 507 | // We can't use kernel sample file w/o the binary else we will |
| 508 | // use it with a zero offset, the code below will abort because |
| 509 | // we will get incorrect callee sub-range and out of range |
| 510 | // callee vma. FIXME |
| 511 | if (header.is_kernel && !caller_bfd_ok) |
| 512 | return; |
| 513 | |
| 514 | // We must handle start_offset, this offset can be different for the |
| 515 | // caller and the callee: kernel sample traversing the syscall barrier. |
| 516 | u32 caller_offset = 0; |
| 517 | |
| 518 | if (header.is_kernel || header.anon_start) { |
| 519 | caller_offset = caller_bfd.get_start_offset(header.anon_start); |
| 520 | } |
| 521 | |
| 522 | u32 callee_offset = 0; |
| 523 | |
| 524 | if (header.cg_to_is_kernel || header.cg_to_anon_start) { |
| 525 | callee_offset = |
| 526 | callee_bfd.get_start_offset(header.cg_to_anon_start); |
| 527 | } |
| 528 | |
| 529 | image_name_id image_id = image_names.create(image_name); |
| 530 | image_name_id callee_image_id = image_names.create(callee_bfd.get_filename()); |
| 531 | image_name_id app_id = image_names.create(app_name); |
| 532 | |
| 533 | call_data caller(pc, profile, caller_bfd, caller_offset, image_id, |
| 534 | app_id, debug_info); |
| 535 | call_data callee(pc, profile, callee_bfd, callee_offset, |
| 536 | callee_image_id, app_id, debug_info); |
| 537 | |
| 538 | if (cverb << vdebug) { |
| 539 | caller.verbose_bfd("Caller:"); |
| 540 | callee.verbose_bfd("Callee:"); |
| 541 | } |
| 542 | |
| 543 | // For each symbol in the caller bfd, process all arcs to |
| 544 | // callee bfd symbols |
| 545 | |
| 546 | for (symbol_index_t i = 0; i < caller_bfd.syms.size(); ++i) { |
| 547 | |
| 548 | caller.caller_sym(i); |
| 549 | |
| 550 | call_data::const_iterator dit = caller.samples.begin(); |
| 551 | call_data::const_iterator dend = caller.samples.end(); |
| 552 | while (dit != dend) { |
| 553 | // if we can't find the callee, skip an arc |
| 554 | if (!callee.callee_sym(key_to_callee(dit->first))) { |
| 555 | ++dit; |
| 556 | continue; |
| 557 | } |
| 558 | |
| 559 | count_array_t arc_count; |
| 560 | arc_count[pclass] = |
| 561 | accumulate_callee(dit, dend, callee.callee_end); |
| 562 | |
| 563 | recorder.add(caller.sym, &callee.sym, arc_count); |
| 564 | } |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | |
| 569 | void callgraph_container::add_symbols(profile_container const & pc) |
| 570 | { |
| 571 | symbol_container::symbols_t::iterator it; |
| 572 | symbol_container::symbols_t::iterator const end = pc.end_symbol(); |
| 573 | |
| 574 | for (it = pc.begin_symbol(); it != end; ++it) |
| 575 | recorder.add(*it, 0, count_array_t()); |
| 576 | } |
| 577 | |
| 578 | |
| 579 | column_flags callgraph_container::output_hint() const |
| 580 | { |
| 581 | column_flags output_hints = cf_none; |
| 582 | |
| 583 | // FIXME: costly: must we access directly recorder map ? |
| 584 | cg_collection syms = recorder.get_symbols(); |
| 585 | |
| 586 | cg_collection::const_iterator it; |
| 587 | cg_collection::const_iterator const end = syms.end(); |
| 588 | for (it = syms.begin(); it != end; ++it) |
| 589 | output_hints = it->output_hint(output_hints); |
| 590 | |
| 591 | return output_hints; |
| 592 | } |
| 593 | |
| 594 | |
| 595 | count_array_t callgraph_container::samples_count() const |
| 596 | { |
| 597 | return total_count; |
| 598 | } |
| 599 | |
| 600 | |
| 601 | cg_collection callgraph_container::get_symbols() const |
| 602 | { |
| 603 | return recorder.get_symbols(); |
| 604 | } |