oatdump.cc revision 4b8c13ee44c4c959d7b8de9adff7ce6df48c31d0
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdio.h> 18#include <stdlib.h> 19 20#include <fstream> 21#include <iostream> 22#include <string> 23#include <vector> 24 25#include "base/stringpiece.h" 26#include "base/unix_file/fd_file.h" 27#include "class_linker.h" 28#include "class_linker-inl.h" 29#include "dex_file-inl.h" 30#include "dex_instruction.h" 31#include "disassembler.h" 32#include "gc_map.h" 33#include "gc/space/image_space.h" 34#include "gc/space/large_object_space.h" 35#include "gc/space/space-inl.h" 36#include "image.h" 37#include "indenter.h" 38#include "mapping_table.h" 39#include "mirror/art_field-inl.h" 40#include "mirror/art_method-inl.h" 41#include "mirror/array-inl.h" 42#include "mirror/class-inl.h" 43#include "mirror/object-inl.h" 44#include "mirror/object_array-inl.h" 45#include "oat.h" 46#include "object_utils.h" 47#include "os.h" 48#include "runtime.h" 49#include "safe_map.h" 50#include "scoped_thread_state_change.h" 51#include "verifier/method_verifier.h" 52#include "vmap_table.h" 53 54namespace art { 55 56static void usage() { 57 fprintf(stderr, 58 "Usage: oatdump [options] ...\n" 59 " Example: oatdump --image=$ANDROID_PRODUCT_OUT/system/framework/boot.art --host-prefix=$ANDROID_PRODUCT_OUT\n" 60 " Example: adb shell oatdump --image=/system/framework/boot.art\n" 61 "\n"); 62 fprintf(stderr, 63 " --oat-file=<file.oat>: specifies an input oat filename.\n" 64 " Example: --oat-file=/system/framework/boot.oat\n" 65 "\n"); 66 fprintf(stderr, 67 " --image=<file.art>: specifies an input image filename.\n" 68 " Example: --image=/system/framework/boot.art\n" 69 "\n"); 70 fprintf(stderr, 71 " --boot-image=<file.art>: provide the image file for the boot class path.\n" 72 " Example: --boot-image=/system/framework/boot.art\n" 73 "\n"); 74 fprintf(stderr, 75 " --host-prefix may be used to translate host paths to target paths during\n" 76 " cross compilation.\n" 77 " Example: --host-prefix=out/target/product/crespo\n" 78 " Default: $ANDROID_PRODUCT_OUT\n" 79 "\n"); 80 fprintf(stderr, 81 " --output=<file> may be used to send the output to a file.\n" 82 " Example: --output=/tmp/oatdump.txt\n" 83 "\n"); 84 exit(EXIT_FAILURE); 85} 86 87const char* image_roots_descriptions_[] = { 88 "kResolutionMethod", 89 "kCalleeSaveMethod", 90 "kRefsOnlySaveMethod", 91 "kRefsAndArgsSaveMethod", 92 "kOatLocation", 93 "kDexCaches", 94 "kClassRoots", 95}; 96 97class OatDumper { 98 public: 99 explicit OatDumper(const std::string& host_prefix, const OatFile& oat_file) 100 : host_prefix_(host_prefix), 101 oat_file_(oat_file), 102 oat_dex_files_(oat_file.GetOatDexFiles()), 103 disassembler_(Disassembler::Create(oat_file_.GetOatHeader().GetInstructionSet())) { 104 AddAllOffsets(); 105 } 106 107 void Dump(std::ostream& os) { 108 const OatHeader& oat_header = oat_file_.GetOatHeader(); 109 110 os << "MAGIC:\n"; 111 os << oat_header.GetMagic() << "\n\n"; 112 113 os << "CHECKSUM:\n"; 114 os << StringPrintf("0x%08x\n\n", oat_header.GetChecksum()); 115 116 os << "INSTRUCTION SET:\n"; 117 os << oat_header.GetInstructionSet() << "\n\n"; 118 119 os << "DEX FILE COUNT:\n"; 120 os << oat_header.GetDexFileCount() << "\n\n"; 121 122 os << "EXECUTABLE OFFSET:\n"; 123 os << StringPrintf("0x%08x\n\n", oat_header.GetExecutableOffset()); 124 125 os << "IMAGE FILE LOCATION OAT CHECKSUM:\n"; 126 os << StringPrintf("0x%08x\n\n", oat_header.GetImageFileLocationOatChecksum()); 127 128 os << "IMAGE FILE LOCATION OAT BEGIN:\n"; 129 os << StringPrintf("0x%08x\n\n", oat_header.GetImageFileLocationOatDataBegin()); 130 131 os << "IMAGE FILE LOCATION:\n"; 132 const std::string image_file_location(oat_header.GetImageFileLocation()); 133 os << image_file_location; 134 if (!image_file_location.empty() && !host_prefix_.empty()) { 135 os << " (" << host_prefix_ << image_file_location << ")"; 136 } 137 os << "\n\n"; 138 139 os << "BEGIN:\n"; 140 os << reinterpret_cast<const void*>(oat_file_.Begin()) << "\n\n"; 141 142 os << "END:\n"; 143 os << reinterpret_cast<const void*>(oat_file_.End()) << "\n\n"; 144 145 os << std::flush; 146 147 for (size_t i = 0; i < oat_dex_files_.size(); i++) { 148 const OatFile::OatDexFile* oat_dex_file = oat_dex_files_[i]; 149 CHECK(oat_dex_file != NULL); 150 DumpOatDexFile(os, *oat_dex_file); 151 } 152 } 153 154 size_t ComputeSize(const void* oat_data) { 155 if (reinterpret_cast<const byte*>(oat_data) < oat_file_.Begin() || 156 reinterpret_cast<const byte*>(oat_data) > oat_file_.End()) { 157 return 0; // Address not in oat file 158 } 159 uint32_t begin_offset = reinterpret_cast<size_t>(oat_data) - 160 reinterpret_cast<size_t>(oat_file_.Begin()); 161 typedef std::set<uint32_t>::iterator It; 162 It it = offsets_.upper_bound(begin_offset); 163 CHECK(it != offsets_.end()); 164 uint32_t end_offset = *it; 165 return end_offset - begin_offset; 166 } 167 168 InstructionSet GetInstructionSet() { 169 return oat_file_.GetOatHeader().GetInstructionSet(); 170 } 171 172 const void* GetOatCode(mirror::ArtMethod* m) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 173 MethodHelper mh(m); 174 for (size_t i = 0; i < oat_dex_files_.size(); i++) { 175 const OatFile::OatDexFile* oat_dex_file = oat_dex_files_[i]; 176 CHECK(oat_dex_file != NULL); 177 UniquePtr<const DexFile> dex_file(oat_dex_file->OpenDexFile()); 178 if (dex_file.get() != NULL) { 179 uint32_t class_def_index; 180 bool found = dex_file->FindClassDefIndex(mh.GetDeclaringClassDescriptor(), class_def_index); 181 if (found) { 182 const OatFile::OatClass* oat_class = oat_dex_file->GetOatClass(class_def_index); 183 CHECK(oat_class != NULL); 184 size_t method_index = m->GetMethodIndex(); 185 return oat_class->GetOatMethod(method_index).GetCode(); 186 } 187 } 188 } 189 return NULL; 190 } 191 192 private: 193 void AddAllOffsets() { 194 // We don't know the length of the code for each method, but we need to know where to stop 195 // when disassembling. What we do know is that a region of code will be followed by some other 196 // region, so if we keep a sorted sequence of the start of each region, we can infer the length 197 // of a piece of code by using upper_bound to find the start of the next region. 198 for (size_t i = 0; i < oat_dex_files_.size(); i++) { 199 const OatFile::OatDexFile* oat_dex_file = oat_dex_files_[i]; 200 CHECK(oat_dex_file != NULL); 201 UniquePtr<const DexFile> dex_file(oat_dex_file->OpenDexFile()); 202 if (dex_file.get() == NULL) { 203 continue; 204 } 205 offsets_.insert(reinterpret_cast<uint32_t>(&dex_file->GetHeader())); 206 for (size_t class_def_index = 0; class_def_index < dex_file->NumClassDefs(); class_def_index++) { 207 const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_index); 208 UniquePtr<const OatFile::OatClass> oat_class(oat_dex_file->GetOatClass(class_def_index)); 209 const byte* class_data = dex_file->GetClassData(class_def); 210 if (class_data != NULL) { 211 ClassDataItemIterator it(*dex_file, class_data); 212 SkipAllFields(it); 213 uint32_t class_method_index = 0; 214 while (it.HasNextDirectMethod()) { 215 AddOffsets(oat_class->GetOatMethod(class_method_index++)); 216 it.Next(); 217 } 218 while (it.HasNextVirtualMethod()) { 219 AddOffsets(oat_class->GetOatMethod(class_method_index++)); 220 it.Next(); 221 } 222 } 223 } 224 } 225 226 // If the last thing in the file is code for a method, there won't be an offset for the "next" 227 // thing. Instead of having a special case in the upper_bound code, let's just add an entry 228 // for the end of the file. 229 offsets_.insert(static_cast<uint32_t>(oat_file_.Size())); 230 } 231 232 void AddOffsets(const OatFile::OatMethod& oat_method) { 233 uint32_t code_offset = oat_method.GetCodeOffset(); 234 if (oat_file_.GetOatHeader().GetInstructionSet() == kThumb2) { 235 code_offset &= ~0x1; 236 } 237 offsets_.insert(code_offset); 238 offsets_.insert(oat_method.GetMappingTableOffset()); 239 offsets_.insert(oat_method.GetVmapTableOffset()); 240 offsets_.insert(oat_method.GetNativeGcMapOffset()); 241 } 242 243 void DumpOatDexFile(std::ostream& os, const OatFile::OatDexFile& oat_dex_file) { 244 os << "OAT DEX FILE:\n"; 245 os << StringPrintf("location: %s\n", oat_dex_file.GetDexFileLocation().c_str()); 246 os << StringPrintf("checksum: 0x%08x\n", oat_dex_file.GetDexFileLocationChecksum()); 247 UniquePtr<const DexFile> dex_file(oat_dex_file.OpenDexFile()); 248 if (dex_file.get() == NULL) { 249 os << "NOT FOUND\n\n"; 250 return; 251 } 252 for (size_t class_def_index = 0; class_def_index < dex_file->NumClassDefs(); class_def_index++) { 253 const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_index); 254 const char* descriptor = dex_file->GetClassDescriptor(class_def); 255 UniquePtr<const OatFile::OatClass> oat_class(oat_dex_file.GetOatClass(class_def_index)); 256 CHECK(oat_class.get() != NULL); 257 os << StringPrintf("%zd: %s (type_idx=%d) (", class_def_index, descriptor, class_def.class_idx_) 258 << oat_class->GetStatus() << ")" 259 // TODO: JACK CLASS ACCESS (HACK TO BE REMOVED) 260 << ( (class_def.access_flags_ & kAccClassJack) == kAccClassJack ? " (Jack)" : "" ) 261 << "\n"; 262 Indenter indent_filter(os.rdbuf(), kIndentChar, kIndentBy1Count); 263 std::ostream indented_os(&indent_filter); 264 DumpOatClass(indented_os, *oat_class.get(), *(dex_file.get()), class_def); 265 } 266 267 os << std::flush; 268 } 269 270 static void SkipAllFields(ClassDataItemIterator& it) { 271 while (it.HasNextStaticField()) { 272 it.Next(); 273 } 274 while (it.HasNextInstanceField()) { 275 it.Next(); 276 } 277 } 278 279 void DumpOatClass(std::ostream& os, const OatFile::OatClass& oat_class, const DexFile& dex_file, 280 const DexFile::ClassDef& class_def) { 281 const byte* class_data = dex_file.GetClassData(class_def); 282 if (class_data == NULL) { // empty class such as a marker interface? 283 return; 284 } 285 ClassDataItemIterator it(dex_file, class_data); 286 SkipAllFields(it); 287 uint32_t class_def_idx = dex_file.GetIndexForClassDef(class_def); 288 uint32_t class_method_idx = 0; 289 while (it.HasNextDirectMethod()) { 290 const OatFile::OatMethod oat_method = oat_class.GetOatMethod(class_method_idx); 291 DumpOatMethod(os, class_def_idx, class_method_idx, oat_method, dex_file, 292 it.GetMemberIndex(), it.GetMethodCodeItem(), it.GetMemberAccessFlags()); 293 class_method_idx++; 294 it.Next(); 295 } 296 while (it.HasNextVirtualMethod()) { 297 const OatFile::OatMethod oat_method = oat_class.GetOatMethod(class_method_idx); 298 DumpOatMethod(os, class_def_idx, class_method_idx, oat_method, dex_file, 299 it.GetMemberIndex(), it.GetMethodCodeItem(), it.GetMemberAccessFlags()); 300 class_method_idx++; 301 it.Next(); 302 } 303 DCHECK(!it.HasNext()); 304 os << std::flush; 305 } 306 307 void DumpOatMethod(std::ostream& os, uint32_t class_def_idx, uint32_t class_method_index, 308 const OatFile::OatMethod& oat_method, const DexFile& dex_file, 309 uint32_t dex_method_idx, const DexFile::CodeItem* code_item, 310 uint32_t method_access_flags) { 311 os << StringPrintf("%d: %s (dex_method_idx=%d)\n", 312 class_method_index, PrettyMethod(dex_method_idx, dex_file, true).c_str(), 313 dex_method_idx); 314 Indenter indent1_filter(os.rdbuf(), kIndentChar, kIndentBy1Count); 315 std::ostream indent1_os(&indent1_filter); 316 { 317 indent1_os << "DEX CODE:\n"; 318 Indenter indent2_filter(indent1_os.rdbuf(), kIndentChar, kIndentBy1Count); 319 std::ostream indent2_os(&indent2_filter); 320 DumpDexCode(indent2_os, dex_file, code_item); 321 } 322 if (Runtime::Current() != NULL) { 323 indent1_os << "VERIFIER TYPE ANALYSIS:\n"; 324 Indenter indent2_filter(indent1_os.rdbuf(), kIndentChar, kIndentBy1Count); 325 std::ostream indent2_os(&indent2_filter); 326 DumpVerifier(indent2_os, dex_method_idx, &dex_file, class_def_idx, code_item, method_access_flags); 327 } 328 { 329 indent1_os << "OAT DATA:\n"; 330 Indenter indent2_filter(indent1_os.rdbuf(), kIndentChar, kIndentBy1Count); 331 std::ostream indent2_os(&indent2_filter); 332 333 indent2_os << StringPrintf("frame_size_in_bytes: %zd\n", oat_method.GetFrameSizeInBytes()); 334 indent2_os << StringPrintf("core_spill_mask: 0x%08x ", oat_method.GetCoreSpillMask()); 335 DumpSpillMask(indent2_os, oat_method.GetCoreSpillMask(), false); 336 indent2_os << StringPrintf("\nfp_spill_mask: 0x%08x ", oat_method.GetFpSpillMask()); 337 DumpSpillMask(indent2_os, oat_method.GetFpSpillMask(), true); 338 indent2_os << StringPrintf("\nvmap_table: %p (offset=0x%08x)\n", 339 oat_method.GetVmapTable(), oat_method.GetVmapTableOffset()); 340 DumpVmap(indent2_os, oat_method); 341 indent2_os << StringPrintf("mapping_table: %p (offset=0x%08x)\n", 342 oat_method.GetMappingTable(), oat_method.GetMappingTableOffset()); 343 const bool kDumpRawMappingTable = false; 344 if (kDumpRawMappingTable) { 345 Indenter indent3_filter(indent2_os.rdbuf(), kIndentChar, kIndentBy1Count); 346 std::ostream indent3_os(&indent3_filter); 347 DumpMappingTable(indent3_os, oat_method); 348 } 349 indent2_os << StringPrintf("gc_map: %p (offset=0x%08x)\n", 350 oat_method.GetNativeGcMap(), oat_method.GetNativeGcMapOffset()); 351 const bool kDumpRawGcMap = false; 352 if (kDumpRawGcMap) { 353 Indenter indent3_filter(indent2_os.rdbuf(), kIndentChar, kIndentBy1Count); 354 std::ostream indent3_os(&indent3_filter); 355 DumpGcMap(indent3_os, oat_method, code_item); 356 } 357 } 358 { 359 indent1_os << StringPrintf("CODE: %p (offset=0x%08x size=%d)%s\n", 360 oat_method.GetCode(), 361 oat_method.GetCodeOffset(), 362 oat_method.GetCodeSize(), 363 oat_method.GetCode() != NULL ? "..." : ""); 364 Indenter indent2_filter(indent1_os.rdbuf(), kIndentChar, kIndentBy1Count); 365 std::ostream indent2_os(&indent2_filter); 366 DumpCode(indent2_os, oat_method, dex_method_idx, &dex_file, class_def_idx, code_item, 367 method_access_flags); 368 } 369 } 370 371 void DumpSpillMask(std::ostream& os, uint32_t spill_mask, bool is_float) { 372 if (spill_mask == 0) { 373 return; 374 } 375 os << "("; 376 for (size_t i = 0; i < 32; i++) { 377 if ((spill_mask & (1 << i)) != 0) { 378 if (is_float) { 379 os << "fr" << i; 380 } else { 381 os << "r" << i; 382 } 383 spill_mask ^= 1 << i; // clear bit 384 if (spill_mask != 0) { 385 os << ", "; 386 } else { 387 break; 388 } 389 } 390 } 391 os << ")"; 392 } 393 394 void DumpVmap(std::ostream& os, const OatFile::OatMethod& oat_method) { 395 const uint8_t* raw_table = oat_method.GetVmapTable(); 396 if (raw_table != NULL) { 397 const VmapTable vmap_table(raw_table); 398 bool first = true; 399 bool processing_fp = false; 400 uint32_t spill_mask = oat_method.GetCoreSpillMask(); 401 for (size_t i = 0; i < vmap_table.Size(); i++) { 402 uint16_t dex_reg = vmap_table[i]; 403 uint32_t cpu_reg = vmap_table.ComputeRegister(spill_mask, i, 404 processing_fp ? kFloatVReg : kIntVReg); 405 os << (first ? "v" : ", v") << dex_reg; 406 if (!processing_fp) { 407 os << "/r" << cpu_reg; 408 } else { 409 os << "/fr" << cpu_reg; 410 } 411 first = false; 412 if (!processing_fp && dex_reg == 0xFFFF) { 413 processing_fp = true; 414 spill_mask = oat_method.GetFpSpillMask(); 415 } 416 } 417 os << "\n"; 418 } 419 } 420 421 void DescribeVReg(std::ostream& os, const OatFile::OatMethod& oat_method, 422 const DexFile::CodeItem* code_item, size_t reg, VRegKind kind) { 423 const uint8_t* raw_table = oat_method.GetVmapTable(); 424 if (raw_table != NULL) { 425 const VmapTable vmap_table(raw_table); 426 uint32_t vmap_offset; 427 if (vmap_table.IsInContext(reg, kind, &vmap_offset)) { 428 bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg); 429 uint32_t spill_mask = is_float ? oat_method.GetFpSpillMask() 430 : oat_method.GetCoreSpillMask(); 431 os << (is_float ? "fr" : "r") << vmap_table.ComputeRegister(spill_mask, vmap_offset, kind); 432 } else { 433 uint32_t offset = StackVisitor::GetVRegOffset(code_item, oat_method.GetCoreSpillMask(), 434 oat_method.GetFpSpillMask(), 435 oat_method.GetFrameSizeInBytes(), reg); 436 os << "[sp + #" << offset << "]"; 437 } 438 } 439 } 440 441 void DumpGcMap(std::ostream& os, const OatFile::OatMethod& oat_method, 442 const DexFile::CodeItem* code_item) { 443 const uint8_t* gc_map_raw = oat_method.GetNativeGcMap(); 444 if (gc_map_raw == NULL) { 445 return; 446 } 447 NativePcOffsetToReferenceMap map(gc_map_raw); 448 const void* code = oat_method.GetCode(); 449 for (size_t entry = 0; entry < map.NumEntries(); entry++) { 450 const uint8_t* native_pc = reinterpret_cast<const uint8_t*>(code) + 451 map.GetNativePcOffset(entry); 452 os << StringPrintf("%p", native_pc); 453 size_t num_regs = map.RegWidth() * 8; 454 const uint8_t* reg_bitmap = map.GetBitMap(entry); 455 bool first = true; 456 for (size_t reg = 0; reg < num_regs; reg++) { 457 if (((reg_bitmap[reg / 8] >> (reg % 8)) & 0x01) != 0) { 458 if (first) { 459 os << " v" << reg << " ("; 460 DescribeVReg(os, oat_method, code_item, reg, kReferenceVReg); 461 os << ")"; 462 first = false; 463 } else { 464 os << ", v" << reg << " ("; 465 DescribeVReg(os, oat_method, code_item, reg, kReferenceVReg); 466 os << ")"; 467 } 468 } 469 } 470 os << "\n"; 471 } 472 } 473 474 void DumpMappingTable(std::ostream& os, const OatFile::OatMethod& oat_method) { 475 const void* code = oat_method.GetCode(); 476 if (code == NULL) { 477 return; 478 } 479 MappingTable table(oat_method.GetMappingTable()); 480 if (table.TotalSize() != 0) { 481 Indenter indent_filter(os.rdbuf(), kIndentChar, kIndentBy1Count); 482 std::ostream indent_os(&indent_filter); 483 if (table.PcToDexSize() != 0) { 484 typedef MappingTable::PcToDexIterator It; 485 os << "suspend point mappings {\n"; 486 for (It cur = table.PcToDexBegin(), end = table.PcToDexEnd(); cur != end; ++cur) { 487 indent_os << StringPrintf("0x%04x -> 0x%04x\n", cur.NativePcOffset(), cur.DexPc()); 488 } 489 os << "}\n"; 490 } 491 if (table.DexToPcSize() != 0) { 492 typedef MappingTable::DexToPcIterator It; 493 os << "catch entry mappings {\n"; 494 for (It cur = table.DexToPcBegin(), end = table.DexToPcEnd(); cur != end; ++cur) { 495 indent_os << StringPrintf("0x%04x -> 0x%04x\n", cur.NativePcOffset(), cur.DexPc()); 496 } 497 os << "}\n"; 498 } 499 } 500 } 501 502 uint32_t DumpMappingAtOffset(std::ostream& os, const OatFile::OatMethod& oat_method, 503 size_t offset, bool suspend_point_mapping) { 504 MappingTable table(oat_method.GetMappingTable()); 505 if (suspend_point_mapping && table.PcToDexSize() > 0) { 506 typedef MappingTable::PcToDexIterator It; 507 for (It cur = table.PcToDexBegin(), end = table.PcToDexEnd(); cur != end; ++cur) { 508 if (offset == cur.NativePcOffset()) { 509 os << StringPrintf("suspend point dex PC: 0x%04x\n", cur.DexPc()); 510 return cur.DexPc(); 511 } 512 } 513 } else if (!suspend_point_mapping && table.DexToPcSize() > 0) { 514 typedef MappingTable::DexToPcIterator It; 515 for (It cur = table.DexToPcBegin(), end = table.DexToPcEnd(); cur != end; ++cur) { 516 if (offset == cur.NativePcOffset()) { 517 os << StringPrintf("catch entry dex PC: 0x%04x\n", cur.DexPc()); 518 return cur.DexPc(); 519 } 520 } 521 } 522 return DexFile::kDexNoIndex; 523 } 524 525 void DumpGcMapAtNativePcOffset(std::ostream& os, const OatFile::OatMethod& oat_method, 526 const DexFile::CodeItem* code_item, size_t native_pc_offset) { 527 const uint8_t* gc_map_raw = oat_method.GetNativeGcMap(); 528 if (gc_map_raw != NULL) { 529 NativePcOffsetToReferenceMap map(gc_map_raw); 530 if (map.HasEntry(native_pc_offset)) { 531 size_t num_regs = map.RegWidth() * 8; 532 const uint8_t* reg_bitmap = map.FindBitMap(native_pc_offset); 533 bool first = true; 534 for (size_t reg = 0; reg < num_regs; reg++) { 535 if (((reg_bitmap[reg / 8] >> (reg % 8)) & 0x01) != 0) { 536 if (first) { 537 os << "GC map objects: v" << reg << " ("; 538 DescribeVReg(os, oat_method, code_item, reg, kReferenceVReg); 539 os << ")"; 540 first = false; 541 } else { 542 os << ", v" << reg << " ("; 543 DescribeVReg(os, oat_method, code_item, reg, kReferenceVReg); 544 os << ")"; 545 } 546 } 547 } 548 if (!first) { 549 os << "\n"; 550 } 551 } 552 } 553 } 554 555 void DumpVRegsAtDexPc(std::ostream& os, const OatFile::OatMethod& oat_method, 556 uint32_t dex_method_idx, const DexFile* dex_file, 557 uint32_t class_def_idx, const DexFile::CodeItem* code_item, 558 uint32_t method_access_flags, uint32_t dex_pc) { 559 static UniquePtr<verifier::MethodVerifier> verifier; 560 static const DexFile* verified_dex_file = NULL; 561 static uint32_t verified_dex_method_idx = DexFile::kDexNoIndex; 562 if (dex_file != verified_dex_file || verified_dex_method_idx != dex_method_idx) { 563 ScopedObjectAccess soa(Thread::Current()); 564 mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(*dex_file); 565 mirror::ClassLoader* class_loader = NULL; 566 verifier.reset(new verifier::MethodVerifier(dex_file, dex_cache, class_loader, class_def_idx, 567 code_item, dex_method_idx, NULL, 568 method_access_flags, true, true)); 569 verifier->Verify(); 570 verified_dex_file = dex_file; 571 verified_dex_method_idx = dex_method_idx; 572 } 573 std::vector<int32_t> kinds = verifier->DescribeVRegs(dex_pc); 574 bool first = true; 575 for (size_t reg = 0; reg < code_item->registers_size_; reg++) { 576 VRegKind kind = static_cast<VRegKind>(kinds.at(reg * 2)); 577 if (kind != kUndefined) { 578 if (first) { 579 os << "VRegs: v"; 580 first = false; 581 } else { 582 os << ", v"; 583 } 584 os << reg << " ("; 585 switch (kind) { 586 case kImpreciseConstant: 587 os << "Imprecise Constant: " << kinds.at((reg * 2) + 1) << ", "; 588 DescribeVReg(os, oat_method, code_item, reg, kind); 589 break; 590 case kConstant: 591 os << "Constant: " << kinds.at((reg * 2) + 1); 592 break; 593 default: 594 DescribeVReg(os, oat_method, code_item, reg, kind); 595 break; 596 } 597 os << ")"; 598 } 599 } 600 if (!first) { 601 os << "\n"; 602 } 603 } 604 605 606 void DumpDexCode(std::ostream& os, const DexFile& dex_file, const DexFile::CodeItem* code_item) { 607 if (code_item != NULL) { 608 size_t i = 0; 609 while (i < code_item->insns_size_in_code_units_) { 610 const Instruction* instruction = Instruction::At(&code_item->insns_[i]); 611 os << StringPrintf("0x%04zx: %s\n", i, instruction->DumpString(&dex_file).c_str()); 612 i += instruction->SizeInCodeUnits(); 613 } 614 } 615 } 616 617 void DumpVerifier(std::ostream& os, uint32_t dex_method_idx, const DexFile* dex_file, 618 uint32_t class_def_idx, const DexFile::CodeItem* code_item, 619 uint32_t method_access_flags) { 620 if ((method_access_flags & kAccNative) == 0) { 621 ScopedObjectAccess soa(Thread::Current()); 622 mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(*dex_file); 623 mirror::ClassLoader* class_loader = NULL; 624 verifier::MethodVerifier::VerifyMethodAndDump(os, dex_method_idx, dex_file, dex_cache, 625 class_loader, class_def_idx, code_item, NULL, 626 method_access_flags); 627 } 628 } 629 630 void DumpCode(std::ostream& os, const OatFile::OatMethod& oat_method, 631 uint32_t dex_method_idx, const DexFile* dex_file, 632 uint32_t class_def_idx, const DexFile::CodeItem* code_item, 633 uint32_t method_access_flags) { 634 const void* code = oat_method.GetCode(); 635 size_t code_size = oat_method.GetCodeSize(); 636 if (code == NULL || code_size == 0) { 637 os << "NO CODE!\n"; 638 return; 639 } 640 const uint8_t* native_pc = reinterpret_cast<const uint8_t*>(code); 641 size_t offset = 0; 642 const bool kDumpVRegs = (Runtime::Current() != NULL); 643 while (offset < code_size) { 644 DumpMappingAtOffset(os, oat_method, offset, false); 645 offset += disassembler_->Dump(os, native_pc + offset); 646 uint32_t dex_pc = DumpMappingAtOffset(os, oat_method, offset, true); 647 if (dex_pc != DexFile::kDexNoIndex) { 648 DumpGcMapAtNativePcOffset(os, oat_method, code_item, offset); 649 if (kDumpVRegs) { 650 DumpVRegsAtDexPc(os, oat_method, dex_method_idx, dex_file, class_def_idx, code_item, 651 method_access_flags, dex_pc); 652 } 653 } 654 } 655 } 656 657 const std::string host_prefix_; 658 const OatFile& oat_file_; 659 std::vector<const OatFile::OatDexFile*> oat_dex_files_; 660 std::set<uint32_t> offsets_; 661 UniquePtr<Disassembler> disassembler_; 662}; 663 664class ImageDumper { 665 public: 666 explicit ImageDumper(std::ostream* os, const std::string& image_filename, 667 const std::string& host_prefix, gc::space::ImageSpace& image_space, 668 const ImageHeader& image_header) 669 : os_(os), image_filename_(image_filename), host_prefix_(host_prefix), 670 image_space_(image_space), image_header_(image_header) {} 671 672 void Dump() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 673 std::ostream& os = *os_; 674 os << "MAGIC: " << image_header_.GetMagic() << "\n\n"; 675 676 os << "IMAGE BEGIN: " << reinterpret_cast<void*>(image_header_.GetImageBegin()) << "\n\n"; 677 678 os << "OAT CHECKSUM: " << StringPrintf("0x%08x\n\n", image_header_.GetOatChecksum()); 679 680 os << "OAT FILE BEGIN:" << reinterpret_cast<void*>(image_header_.GetOatFileBegin()) << "\n\n"; 681 682 os << "OAT DATA BEGIN:" << reinterpret_cast<void*>(image_header_.GetOatDataBegin()) << "\n\n"; 683 684 os << "OAT DATA END:" << reinterpret_cast<void*>(image_header_.GetOatDataEnd()) << "\n\n"; 685 686 os << "OAT FILE END:" << reinterpret_cast<void*>(image_header_.GetOatFileEnd()) << "\n\n"; 687 688 { 689 os << "ROOTS: " << reinterpret_cast<void*>(image_header_.GetImageRoots()) << "\n"; 690 Indenter indent1_filter(os.rdbuf(), kIndentChar, kIndentBy1Count); 691 std::ostream indent1_os(&indent1_filter); 692 CHECK_EQ(arraysize(image_roots_descriptions_), size_t(ImageHeader::kImageRootsMax)); 693 for (int i = 0; i < ImageHeader::kImageRootsMax; i++) { 694 ImageHeader::ImageRoot image_root = static_cast<ImageHeader::ImageRoot>(i); 695 const char* image_root_description = image_roots_descriptions_[i]; 696 mirror::Object* image_root_object = image_header_.GetImageRoot(image_root); 697 indent1_os << StringPrintf("%s: %p\n", image_root_description, image_root_object); 698 if (image_root_object->IsObjectArray()) { 699 Indenter indent2_filter(indent1_os.rdbuf(), kIndentChar, kIndentBy1Count); 700 std::ostream indent2_os(&indent2_filter); 701 // TODO: replace down_cast with AsObjectArray (g++ currently has a problem with this) 702 mirror::ObjectArray<mirror::Object>* image_root_object_array 703 = down_cast<mirror::ObjectArray<mirror::Object>*>(image_root_object); 704 // = image_root_object->AsObjectArray<Object>(); 705 for (int i = 0; i < image_root_object_array->GetLength(); i++) { 706 mirror::Object* value = image_root_object_array->Get(i); 707 if (value != NULL) { 708 indent2_os << i << ": "; 709 PrettyObjectValue(indent2_os, value->GetClass(), value); 710 } else { 711 indent2_os << i << ": null\n"; 712 } 713 } 714 } 715 } 716 } 717 os << "\n"; 718 719 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 720 mirror::Object* oat_location_object = image_header_.GetImageRoot(ImageHeader::kOatLocation); 721 std::string oat_location(oat_location_object->AsString()->ToModifiedUtf8()); 722 os << "OAT LOCATION: " << oat_location; 723 if (!host_prefix_.empty()) { 724 oat_location = host_prefix_ + oat_location; 725 os << " (" << oat_location << ")"; 726 } 727 os << "\n"; 728 const OatFile* oat_file = class_linker->FindOatFileFromOatLocation(oat_location); 729 if (oat_file == NULL) { 730 os << "NOT FOUND\n"; 731 return; 732 } 733 os << "\n"; 734 735 stats_.oat_file_bytes = oat_file->Size(); 736 737 oat_dumper_.reset(new OatDumper(host_prefix_, *oat_file)); 738 739 for (const OatFile::OatDexFile* oat_dex_file : oat_file->GetOatDexFiles()) { 740 CHECK(oat_dex_file != NULL); 741 stats_.oat_dex_file_sizes.push_back(std::make_pair(oat_dex_file->GetDexFileLocation(), 742 oat_dex_file->FileSize())); 743 } 744 745 os << "OBJECTS:\n" << std::flush; 746 747 // Loop through all the image spaces and dump their objects. 748 gc::Heap* heap = Runtime::Current()->GetHeap(); 749 const std::vector<gc::space::ContinuousSpace*>& spaces = heap->GetContinuousSpaces(); 750 Thread* self = Thread::Current(); 751 { 752 WriterMutexLock mu(self, *Locks::heap_bitmap_lock_); 753 heap->FlushAllocStack(); 754 } 755 { 756 std::ostream* saved_os = os_; 757 Indenter indent_filter(os.rdbuf(), kIndentChar, kIndentBy1Count); 758 std::ostream indent_os(&indent_filter); 759 os_ = &indent_os; 760 ReaderMutexLock mu(self, *Locks::heap_bitmap_lock_); 761 for (const auto& space : spaces) { 762 if (space->IsImageSpace()) { 763 gc::space::ImageSpace* image_space = space->AsImageSpace(); 764 image_space->GetLiveBitmap()->Walk(ImageDumper::Callback, this); 765 indent_os << "\n"; 766 } 767 } 768 // Dump the large objects separately. 769 heap->GetLargeObjectsSpace()->GetLiveObjects()->Walk(ImageDumper::Callback, this); 770 indent_os << "\n"; 771 os_ = saved_os; 772 } 773 os << "STATS:\n" << std::flush; 774 UniquePtr<File> file(OS::OpenFileForReading(image_filename_.c_str())); 775 stats_.file_bytes = file->GetLength(); 776 size_t header_bytes = sizeof(ImageHeader); 777 stats_.header_bytes = header_bytes; 778 size_t alignment_bytes = RoundUp(header_bytes, kObjectAlignment) - header_bytes; 779 stats_.alignment_bytes += alignment_bytes; 780 stats_.Dump(os); 781 os << "\n"; 782 783 os << std::flush; 784 785 oat_dumper_->Dump(os); 786 } 787 788 private: 789 static void PrettyObjectValue(std::ostream& os, mirror::Class* type, mirror::Object* value) 790 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 791 CHECK(type != NULL); 792 if (value == NULL) { 793 os << StringPrintf("null %s\n", PrettyDescriptor(type).c_str()); 794 } else if (type->IsStringClass()) { 795 mirror::String* string = value->AsString(); 796 os << StringPrintf("%p String: %s\n", string, 797 PrintableString(string->ToModifiedUtf8()).c_str()); 798 } else if (type->IsClassClass()) { 799 mirror::Class* klass = value->AsClass(); 800 os << StringPrintf("%p Class: %s\n", klass, PrettyDescriptor(klass).c_str()); 801 } else if (type->IsArtFieldClass()) { 802 mirror::ArtField* field = value->AsArtField(); 803 os << StringPrintf("%p Field: %s\n", field, PrettyField(field).c_str()); 804 } else if (type->IsArtMethodClass()) { 805 mirror::ArtMethod* method = value->AsArtMethod(); 806 os << StringPrintf("%p Method: %s\n", method, PrettyMethod(method).c_str()); 807 } else { 808 os << StringPrintf("%p %s\n", value, PrettyDescriptor(type).c_str()); 809 } 810 } 811 812 static void PrintField(std::ostream& os, mirror::ArtField* field, mirror::Object* obj) 813 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 814 FieldHelper fh(field); 815 const char* descriptor = fh.GetTypeDescriptor(); 816 os << StringPrintf("%s: ", fh.GetName()); 817 if (descriptor[0] != 'L' && descriptor[0] != '[') { 818 mirror::Class* type = fh.GetType(); 819 if (type->IsPrimitiveLong()) { 820 os << StringPrintf("%lld (0x%llx)\n", field->Get64(obj), field->Get64(obj)); 821 } else if (type->IsPrimitiveDouble()) { 822 os << StringPrintf("%f (%a)\n", field->GetDouble(obj), field->GetDouble(obj)); 823 } else if (type->IsPrimitiveFloat()) { 824 os << StringPrintf("%f (%a)\n", field->GetFloat(obj), field->GetFloat(obj)); 825 } else { 826 DCHECK(type->IsPrimitive()); 827 os << StringPrintf("%d (0x%x)\n", field->Get32(obj), field->Get32(obj)); 828 } 829 } else { 830 // Get the value, don't compute the type unless it is non-null as we don't want 831 // to cause class loading. 832 mirror::Object* value = field->GetObj(obj); 833 if (value == NULL) { 834 os << StringPrintf("null %s\n", PrettyDescriptor(descriptor).c_str()); 835 } else { 836 // Grab the field type without causing resolution. 837 mirror::Class* field_type = fh.GetType(false); 838 if (field_type != NULL) { 839 PrettyObjectValue(os, field_type, value); 840 } else { 841 os << StringPrintf("%p %s\n", value, PrettyDescriptor(descriptor).c_str()); 842 } 843 } 844 } 845 } 846 847 static void DumpFields(std::ostream& os, mirror::Object* obj, mirror::Class* klass) 848 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 849 mirror::Class* super = klass->GetSuperClass(); 850 if (super != NULL) { 851 DumpFields(os, obj, super); 852 } 853 mirror::ObjectArray<mirror::ArtField>* fields = klass->GetIFields(); 854 if (fields != NULL) { 855 for (int32_t i = 0; i < fields->GetLength(); i++) { 856 mirror::ArtField* field = fields->Get(i); 857 PrintField(os, field, obj); 858 } 859 } 860 } 861 862 bool InDumpSpace(const mirror::Object* object) { 863 return image_space_.Contains(object); 864 } 865 866 const void* GetOatCodeBegin(mirror::ArtMethod* m) 867 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 868 const void* code = m->GetEntryPointFromCompiledCode(); 869 if (code == GetResolutionTrampoline(Runtime::Current()->GetClassLinker())) { 870 code = oat_dumper_->GetOatCode(m); 871 } 872 if (oat_dumper_->GetInstructionSet() == kThumb2) { 873 code = reinterpret_cast<void*>(reinterpret_cast<uint32_t>(code) & ~0x1); 874 } 875 return code; 876 } 877 878 uint32_t GetOatCodeSize(mirror::ArtMethod* m) 879 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 880 const uint32_t* oat_code_begin = reinterpret_cast<const uint32_t*>(GetOatCodeBegin(m)); 881 if (oat_code_begin == NULL) { 882 return 0; 883 } 884 return oat_code_begin[-1]; 885 } 886 887 const void* GetOatCodeEnd(mirror::ArtMethod* m) 888 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 889 const uint8_t* oat_code_begin = reinterpret_cast<const uint8_t*>(GetOatCodeBegin(m)); 890 if (oat_code_begin == NULL) { 891 return NULL; 892 } 893 return oat_code_begin + GetOatCodeSize(m); 894 } 895 896 static void Callback(mirror::Object* obj, void* arg) 897 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 898 DCHECK(obj != NULL); 899 DCHECK(arg != NULL); 900 ImageDumper* state = reinterpret_cast<ImageDumper*>(arg); 901 if (!state->InDumpSpace(obj)) { 902 return; 903 } 904 905 size_t object_bytes = obj->SizeOf(); 906 size_t alignment_bytes = RoundUp(object_bytes, kObjectAlignment) - object_bytes; 907 state->stats_.object_bytes += object_bytes; 908 state->stats_.alignment_bytes += alignment_bytes; 909 910 std::ostream& os = *state->os_; 911 mirror::Class* obj_class = obj->GetClass(); 912 if (obj_class->IsArrayClass()) { 913 os << StringPrintf("%p: %s length:%d\n", obj, PrettyDescriptor(obj_class).c_str(), 914 obj->AsArray()->GetLength()); 915 } else if (obj->IsClass()) { 916 mirror::Class* klass = obj->AsClass(); 917 os << StringPrintf("%p: java.lang.Class \"%s\" (", obj, PrettyDescriptor(klass).c_str()) 918 << klass->GetStatus() << ")\n"; 919 } else if (obj->IsArtField()) { 920 os << StringPrintf("%p: java.lang.reflect.ArtField %s\n", obj, 921 PrettyField(obj->AsArtField()).c_str()); 922 } else if (obj->IsArtMethod()) { 923 os << StringPrintf("%p: java.lang.reflect.ArtMethod %s\n", obj, 924 PrettyMethod(obj->AsArtMethod()).c_str()); 925 } else if (obj_class->IsStringClass()) { 926 os << StringPrintf("%p: java.lang.String %s\n", obj, 927 PrintableString(obj->AsString()->ToModifiedUtf8()).c_str()); 928 } else { 929 os << StringPrintf("%p: %s\n", obj, PrettyDescriptor(obj_class).c_str()); 930 } 931 Indenter indent_filter(os.rdbuf(), kIndentChar, kIndentBy1Count); 932 std::ostream indent_os(&indent_filter); 933 DumpFields(indent_os, obj, obj_class); 934 if (obj->IsObjectArray()) { 935 mirror::ObjectArray<mirror::Object>* obj_array = obj->AsObjectArray<mirror::Object>(); 936 int32_t length = obj_array->GetLength(); 937 for (int32_t i = 0; i < length; i++) { 938 mirror::Object* value = obj_array->Get(i); 939 size_t run = 0; 940 for (int32_t j = i + 1; j < length; j++) { 941 if (value == obj_array->Get(j)) { 942 run++; 943 } else { 944 break; 945 } 946 } 947 if (run == 0) { 948 indent_os << StringPrintf("%d: ", i); 949 } else { 950 indent_os << StringPrintf("%d to %zd: ", i, i + run); 951 i = i + run; 952 } 953 mirror::Class* value_class = value == NULL ? obj_class->GetComponentType() : value->GetClass(); 954 PrettyObjectValue(indent_os, value_class, value); 955 } 956 } else if (obj->IsClass()) { 957 mirror::ObjectArray<mirror::ArtField>* sfields = obj->AsClass()->GetSFields(); 958 if (sfields != NULL) { 959 indent_os << "STATICS:\n"; 960 Indenter indent2_filter(indent_os.rdbuf(), kIndentChar, kIndentBy1Count); 961 std::ostream indent2_os(&indent2_filter); 962 for (int32_t i = 0; i < sfields->GetLength(); i++) { 963 mirror::ArtField* field = sfields->Get(i); 964 PrintField(indent2_os, field, field->GetDeclaringClass()); 965 } 966 } 967 } else if (obj->IsArtMethod()) { 968 mirror::ArtMethod* method = obj->AsArtMethod(); 969 if (method->IsNative()) { 970 DCHECK(method->GetNativeGcMap() == NULL) << PrettyMethod(method); 971 DCHECK(method->GetMappingTable() == NULL) << PrettyMethod(method); 972 bool first_occurrence; 973 const void* oat_code = state->GetOatCodeBegin(method); 974 uint32_t oat_code_size = state->GetOatCodeSize(method); 975 state->ComputeOatSize(oat_code, &first_occurrence); 976 if (first_occurrence) { 977 state->stats_.native_to_managed_code_bytes += oat_code_size; 978 } 979 if (oat_code != method->GetEntryPointFromCompiledCode()) { 980 indent_os << StringPrintf("OAT CODE: %p\n", oat_code); 981 } 982 } else if (method->IsAbstract() || method->IsCalleeSaveMethod() || 983 method->IsResolutionMethod() || MethodHelper(method).IsClassInitializer()) { 984 DCHECK(method->GetNativeGcMap() == NULL) << PrettyMethod(method); 985 DCHECK(method->GetMappingTable() == NULL) << PrettyMethod(method); 986 } else { 987 // TODO: we check there is a GC map here, we may not have a GC map if the code is pointing 988 // to the quick/portable to interpreter bridge. 989 CHECK(method->GetNativeGcMap() != NULL) << PrettyMethod(method); 990 991 const DexFile::CodeItem* code_item = MethodHelper(method).GetCodeItem(); 992 size_t dex_instruction_bytes = code_item->insns_size_in_code_units_ * 2; 993 state->stats_.dex_instruction_bytes += dex_instruction_bytes; 994 995 bool first_occurrence; 996 size_t gc_map_bytes = state->ComputeOatSize(method->GetNativeGcMap(), &first_occurrence); 997 if (first_occurrence) { 998 state->stats_.gc_map_bytes += gc_map_bytes; 999 } 1000 1001 size_t pc_mapping_table_bytes = 1002 state->ComputeOatSize(method->GetMappingTable(), &first_occurrence); 1003 if (first_occurrence) { 1004 state->stats_.pc_mapping_table_bytes += pc_mapping_table_bytes; 1005 } 1006 1007 size_t vmap_table_bytes = 1008 state->ComputeOatSize(method->GetVmapTable(), &first_occurrence); 1009 if (first_occurrence) { 1010 state->stats_.vmap_table_bytes += vmap_table_bytes; 1011 } 1012 1013 const void* oat_code_begin = state->GetOatCodeBegin(method); 1014 const void* oat_code_end = state->GetOatCodeEnd(method); 1015 uint32_t oat_code_size = state->GetOatCodeSize(method); 1016 state->ComputeOatSize(oat_code_begin, &first_occurrence); 1017 if (first_occurrence) { 1018 state->stats_.managed_code_bytes += oat_code_size; 1019 if (method->IsConstructor()) { 1020 if (method->IsStatic()) { 1021 state->stats_.class_initializer_code_bytes += oat_code_size; 1022 } else if (dex_instruction_bytes > kLargeConstructorDexBytes) { 1023 state->stats_.large_initializer_code_bytes += oat_code_size; 1024 } 1025 } else if (dex_instruction_bytes > kLargeMethodDexBytes) { 1026 state->stats_.large_method_code_bytes += oat_code_size; 1027 } 1028 } 1029 state->stats_.managed_code_bytes_ignoring_deduplication += oat_code_size; 1030 1031 indent_os << StringPrintf("OAT CODE: %p-%p\n", oat_code_begin, oat_code_end); 1032 indent_os << StringPrintf("SIZE: Dex Instructions=%zd GC=%zd Mapping=%zd\n", 1033 dex_instruction_bytes, gc_map_bytes, pc_mapping_table_bytes); 1034 1035 size_t total_size = dex_instruction_bytes + gc_map_bytes + pc_mapping_table_bytes + 1036 vmap_table_bytes + oat_code_size + object_bytes; 1037 1038 double expansion = 1039 static_cast<double>(oat_code_size) / static_cast<double>(dex_instruction_bytes); 1040 state->stats_.ComputeOutliers(total_size, expansion, method); 1041 } 1042 } 1043 state->stats_.Update(ClassHelper(obj_class).GetDescriptor(), object_bytes); 1044 } 1045 1046 std::set<const void*> already_seen_; 1047 // Compute the size of the given data within the oat file and whether this is the first time 1048 // this data has been requested 1049 size_t ComputeOatSize(const void* oat_data, bool* first_occurrence) { 1050 if (already_seen_.count(oat_data) == 0) { 1051 *first_occurrence = true; 1052 already_seen_.insert(oat_data); 1053 } else { 1054 *first_occurrence = false; 1055 } 1056 return oat_dumper_->ComputeSize(oat_data); 1057 } 1058 1059 public: 1060 struct Stats { 1061 size_t oat_file_bytes; 1062 size_t file_bytes; 1063 1064 size_t header_bytes; 1065 size_t object_bytes; 1066 size_t alignment_bytes; 1067 1068 size_t managed_code_bytes; 1069 size_t managed_code_bytes_ignoring_deduplication; 1070 size_t managed_to_native_code_bytes; 1071 size_t native_to_managed_code_bytes; 1072 size_t class_initializer_code_bytes; 1073 size_t large_initializer_code_bytes; 1074 size_t large_method_code_bytes; 1075 1076 size_t gc_map_bytes; 1077 size_t pc_mapping_table_bytes; 1078 size_t vmap_table_bytes; 1079 1080 size_t dex_instruction_bytes; 1081 1082 std::vector<mirror::ArtMethod*> method_outlier; 1083 std::vector<size_t> method_outlier_size; 1084 std::vector<double> method_outlier_expansion; 1085 std::vector<std::pair<std::string, size_t> > oat_dex_file_sizes; 1086 1087 explicit Stats() 1088 : oat_file_bytes(0), 1089 file_bytes(0), 1090 header_bytes(0), 1091 object_bytes(0), 1092 alignment_bytes(0), 1093 managed_code_bytes(0), 1094 managed_code_bytes_ignoring_deduplication(0), 1095 managed_to_native_code_bytes(0), 1096 native_to_managed_code_bytes(0), 1097 class_initializer_code_bytes(0), 1098 large_initializer_code_bytes(0), 1099 large_method_code_bytes(0), 1100 gc_map_bytes(0), 1101 pc_mapping_table_bytes(0), 1102 vmap_table_bytes(0), 1103 dex_instruction_bytes(0) {} 1104 1105 struct SizeAndCount { 1106 SizeAndCount(size_t bytes, size_t count) : bytes(bytes), count(count) {} 1107 size_t bytes; 1108 size_t count; 1109 }; 1110 typedef SafeMap<std::string, SizeAndCount> SizeAndCountTable; 1111 SizeAndCountTable sizes_and_counts; 1112 1113 void Update(const std::string& descriptor, size_t object_bytes) { 1114 SizeAndCountTable::iterator it = sizes_and_counts.find(descriptor); 1115 if (it != sizes_and_counts.end()) { 1116 it->second.bytes += object_bytes; 1117 it->second.count += 1; 1118 } else { 1119 sizes_and_counts.Put(descriptor, SizeAndCount(object_bytes, 1)); 1120 } 1121 } 1122 1123 double PercentOfOatBytes(size_t size) { 1124 return (static_cast<double>(size) / static_cast<double>(oat_file_bytes)) * 100; 1125 } 1126 1127 double PercentOfFileBytes(size_t size) { 1128 return (static_cast<double>(size) / static_cast<double>(file_bytes)) * 100; 1129 } 1130 1131 double PercentOfObjectBytes(size_t size) { 1132 return (static_cast<double>(size) / static_cast<double>(object_bytes)) * 100; 1133 } 1134 1135 void ComputeOutliers(size_t total_size, double expansion, mirror::ArtMethod* method) { 1136 method_outlier_size.push_back(total_size); 1137 method_outlier_expansion.push_back(expansion); 1138 method_outlier.push_back(method); 1139 } 1140 1141 void DumpOutliers(std::ostream& os) 1142 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 1143 size_t sum_of_sizes = 0; 1144 size_t sum_of_sizes_squared = 0; 1145 size_t sum_of_expansion = 0; 1146 size_t sum_of_expansion_squared = 0; 1147 size_t n = method_outlier_size.size(); 1148 for (size_t i = 0; i < n; i++) { 1149 size_t cur_size = method_outlier_size[i]; 1150 sum_of_sizes += cur_size; 1151 sum_of_sizes_squared += cur_size * cur_size; 1152 double cur_expansion = method_outlier_expansion[i]; 1153 sum_of_expansion += cur_expansion; 1154 sum_of_expansion_squared += cur_expansion * cur_expansion; 1155 } 1156 size_t size_mean = sum_of_sizes / n; 1157 size_t size_variance = (sum_of_sizes_squared - sum_of_sizes * size_mean) / (n - 1); 1158 double expansion_mean = sum_of_expansion / n; 1159 double expansion_variance = 1160 (sum_of_expansion_squared - sum_of_expansion * expansion_mean) / (n - 1); 1161 1162 // Dump methods whose size is a certain number of standard deviations from the mean 1163 size_t dumped_values = 0; 1164 size_t skipped_values = 0; 1165 for (size_t i = 100; i > 0; i--) { // i is the current number of standard deviations 1166 size_t cur_size_variance = i * i * size_variance; 1167 bool first = true; 1168 for (size_t j = 0; j < n; j++) { 1169 size_t cur_size = method_outlier_size[j]; 1170 if (cur_size > size_mean) { 1171 size_t cur_var = cur_size - size_mean; 1172 cur_var = cur_var * cur_var; 1173 if (cur_var > cur_size_variance) { 1174 if (dumped_values > 20) { 1175 if (i == 1) { 1176 skipped_values++; 1177 } else { 1178 i = 2; // jump to counting for 1 standard deviation 1179 break; 1180 } 1181 } else { 1182 if (first) { 1183 os << "\nBig methods (size > " << i << " standard deviations the norm):\n"; 1184 first = false; 1185 } 1186 os << PrettyMethod(method_outlier[j]) << " requires storage of " 1187 << PrettySize(cur_size) << "\n"; 1188 method_outlier_size[j] = 0; // don't consider this method again 1189 dumped_values++; 1190 } 1191 } 1192 } 1193 } 1194 } 1195 if (skipped_values > 0) { 1196 os << "... skipped " << skipped_values 1197 << " methods with size > 1 standard deviation from the norm\n"; 1198 } 1199 os << std::flush; 1200 1201 // Dump methods whose expansion is a certain number of standard deviations from the mean 1202 dumped_values = 0; 1203 skipped_values = 0; 1204 for (size_t i = 10; i > 0; i--) { // i is the current number of standard deviations 1205 double cur_expansion_variance = i * i * expansion_variance; 1206 bool first = true; 1207 for (size_t j = 0; j < n; j++) { 1208 double cur_expansion = method_outlier_expansion[j]; 1209 if (cur_expansion > expansion_mean) { 1210 size_t cur_var = cur_expansion - expansion_mean; 1211 cur_var = cur_var * cur_var; 1212 if (cur_var > cur_expansion_variance) { 1213 if (dumped_values > 20) { 1214 if (i == 1) { 1215 skipped_values++; 1216 } else { 1217 i = 2; // jump to counting for 1 standard deviation 1218 break; 1219 } 1220 } else { 1221 if (first) { 1222 os << "\nLarge expansion methods (size > " << i 1223 << " standard deviations the norm):\n"; 1224 first = false; 1225 } 1226 os << PrettyMethod(method_outlier[j]) << " expanded code by " 1227 << cur_expansion << "\n"; 1228 method_outlier_expansion[j] = 0.0; // don't consider this method again 1229 dumped_values++; 1230 } 1231 } 1232 } 1233 } 1234 } 1235 if (skipped_values > 0) { 1236 os << "... skipped " << skipped_values 1237 << " methods with expansion > 1 standard deviation from the norm\n"; 1238 } 1239 os << "\n" << std::flush; 1240 } 1241 1242 void Dump(std::ostream& os) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 1243 { 1244 os << "art_file_bytes = " << PrettySize(file_bytes) << "\n\n" 1245 << "art_file_bytes = header_bytes + object_bytes + alignment_bytes\n"; 1246 Indenter indent_filter(os.rdbuf(), kIndentChar, kIndentBy1Count); 1247 std::ostream indent_os(&indent_filter); 1248 indent_os << StringPrintf("header_bytes = %8zd (%2.0f%% of art file bytes)\n" 1249 "object_bytes = %8zd (%2.0f%% of art file bytes)\n" 1250 "alignment_bytes = %8zd (%2.0f%% of art file bytes)\n\n", 1251 header_bytes, PercentOfFileBytes(header_bytes), 1252 object_bytes, PercentOfFileBytes(object_bytes), 1253 alignment_bytes, PercentOfFileBytes(alignment_bytes)) 1254 << std::flush; 1255 CHECK_EQ(file_bytes, header_bytes + object_bytes + alignment_bytes); 1256 } 1257 1258 os << "object_bytes breakdown:\n"; 1259 size_t object_bytes_total = 0; 1260 for (const auto& sizes_and_count : sizes_and_counts) { 1261 const std::string& descriptor(sizes_and_count.first); 1262 double average = static_cast<double>(sizes_and_count.second.bytes) / 1263 static_cast<double>(sizes_and_count.second.count); 1264 double percent = PercentOfObjectBytes(sizes_and_count.second.bytes); 1265 os << StringPrintf("%32s %8zd bytes %6zd instances " 1266 "(%4.0f bytes/instance) %2.0f%% of object_bytes\n", 1267 descriptor.c_str(), sizes_and_count.second.bytes, 1268 sizes_and_count.second.count, average, percent); 1269 object_bytes_total += sizes_and_count.second.bytes; 1270 } 1271 os << "\n" << std::flush; 1272 CHECK_EQ(object_bytes, object_bytes_total); 1273 1274 os << StringPrintf("oat_file_bytes = %8zd\n" 1275 "managed_code_bytes = %8zd (%2.0f%% of oat file bytes)\n" 1276 "managed_to_native_code_bytes = %8zd (%2.0f%% of oat file bytes)\n" 1277 "native_to_managed_code_bytes = %8zd (%2.0f%% of oat file bytes)\n\n" 1278 "class_initializer_code_bytes = %8zd (%2.0f%% of oat file bytes)\n" 1279 "large_initializer_code_bytes = %8zd (%2.0f%% of oat file bytes)\n" 1280 "large_method_code_bytes = %8zd (%2.0f%% of oat file bytes)\n\n", 1281 oat_file_bytes, 1282 managed_code_bytes, PercentOfOatBytes(managed_code_bytes), 1283 managed_to_native_code_bytes, PercentOfOatBytes(managed_to_native_code_bytes), 1284 native_to_managed_code_bytes, PercentOfOatBytes(native_to_managed_code_bytes), 1285 class_initializer_code_bytes, PercentOfOatBytes(class_initializer_code_bytes), 1286 large_initializer_code_bytes, PercentOfOatBytes(large_initializer_code_bytes), 1287 large_method_code_bytes, PercentOfOatBytes(large_method_code_bytes)) 1288 << "DexFile sizes:\n"; 1289 for (const std::pair<std::string, size_t>& oat_dex_file_size : oat_dex_file_sizes) { 1290 os << StringPrintf("%s = %zd (%2.0f%% of oat file bytes)\n", 1291 oat_dex_file_size.first.c_str(), oat_dex_file_size.second, 1292 PercentOfOatBytes(oat_dex_file_size.second)); 1293 } 1294 1295 os << "\n" << StringPrintf("gc_map_bytes = %7zd (%2.0f%% of oat file bytes)\n" 1296 "pc_mapping_table_bytes = %7zd (%2.0f%% of oat file bytes)\n" 1297 "vmap_table_bytes = %7zd (%2.0f%% of oat file bytes)\n\n", 1298 gc_map_bytes, PercentOfOatBytes(gc_map_bytes), 1299 pc_mapping_table_bytes, PercentOfOatBytes(pc_mapping_table_bytes), 1300 vmap_table_bytes, PercentOfOatBytes(vmap_table_bytes)) 1301 << std::flush; 1302 1303 os << StringPrintf("dex_instruction_bytes = %zd\n", dex_instruction_bytes) 1304 << StringPrintf("managed_code_bytes expansion = %.2f (ignoring deduplication %.2f)\n\n", 1305 static_cast<double>(managed_code_bytes) / static_cast<double>(dex_instruction_bytes), 1306 static_cast<double>(managed_code_bytes_ignoring_deduplication) / 1307 static_cast<double>(dex_instruction_bytes)) 1308 << std::flush; 1309 1310 DumpOutliers(os); 1311 } 1312 } stats_; 1313 1314 private: 1315 enum { 1316 // Number of bytes for a constructor to be considered large. Based on the 1000 basic block 1317 // threshold, we assume 2 bytes per instruction and 2 instructions per block. 1318 kLargeConstructorDexBytes = 4000, 1319 // Number of bytes for a method to be considered large. Based on the 4000 basic block 1320 // threshold, we assume 2 bytes per instruction and 2 instructions per block. 1321 kLargeMethodDexBytes = 16000 1322 }; 1323 UniquePtr<OatDumper> oat_dumper_; 1324 std::ostream* os_; 1325 const std::string image_filename_; 1326 const std::string host_prefix_; 1327 gc::space::ImageSpace& image_space_; 1328 const ImageHeader& image_header_; 1329 1330 DISALLOW_COPY_AND_ASSIGN(ImageDumper); 1331}; 1332 1333static int oatdump(int argc, char** argv) { 1334 InitLogging(argv); 1335 1336 // Skip over argv[0]. 1337 argv++; 1338 argc--; 1339 1340 if (argc == 0) { 1341 fprintf(stderr, "No arguments specified\n"); 1342 usage(); 1343 } 1344 1345 const char* oat_filename = NULL; 1346 const char* image_filename = NULL; 1347 const char* boot_image_filename = NULL; 1348 std::string elf_filename_prefix; 1349 UniquePtr<std::string> host_prefix; 1350 std::ostream* os = &std::cout; 1351 UniquePtr<std::ofstream> out; 1352 1353 for (int i = 0; i < argc; i++) { 1354 const StringPiece option(argv[i]); 1355 if (option.starts_with("--oat-file=")) { 1356 oat_filename = option.substr(strlen("--oat-file=")).data(); 1357 } else if (option.starts_with("--image=")) { 1358 image_filename = option.substr(strlen("--image=")).data(); 1359 } else if (option.starts_with("--boot-image=")) { 1360 boot_image_filename = option.substr(strlen("--boot-image=")).data(); 1361 } else if (option.starts_with("--host-prefix=")) { 1362 host_prefix.reset(new std::string(option.substr(strlen("--host-prefix=")).data())); 1363 } else if (option.starts_with("--output=")) { 1364 const char* filename = option.substr(strlen("--output=")).data(); 1365 out.reset(new std::ofstream(filename)); 1366 if (!out->good()) { 1367 fprintf(stderr, "Failed to open output filename %s\n", filename); 1368 usage(); 1369 } 1370 os = out.get(); 1371 } else { 1372 fprintf(stderr, "Unknown argument %s\n", option.data()); 1373 usage(); 1374 } 1375 } 1376 1377 if (image_filename == NULL && oat_filename == NULL) { 1378 fprintf(stderr, "Either --image or --oat must be specified\n"); 1379 return EXIT_FAILURE; 1380 } 1381 1382 if (image_filename != NULL && oat_filename != NULL) { 1383 fprintf(stderr, "Either --image or --oat must be specified but not both\n"); 1384 return EXIT_FAILURE; 1385 } 1386 1387 if (host_prefix.get() == NULL) { 1388 const char* android_product_out = getenv("ANDROID_PRODUCT_OUT"); 1389 if (android_product_out != NULL) { 1390 host_prefix.reset(new std::string(android_product_out)); 1391 } else { 1392 host_prefix.reset(new std::string("")); 1393 } 1394 } 1395 1396 if (oat_filename != NULL) { 1397 OatFile* oat_file = 1398 OatFile::Open(oat_filename, oat_filename, NULL, false); 1399 if (oat_file == NULL) { 1400 fprintf(stderr, "Failed to open oat file from %s\n", oat_filename); 1401 return EXIT_FAILURE; 1402 } 1403 OatDumper oat_dumper(*host_prefix.get(), *oat_file); 1404 oat_dumper.Dump(*os); 1405 return EXIT_SUCCESS; 1406 } 1407 1408 Runtime::Options options; 1409 std::string image_option; 1410 std::string oat_option; 1411 std::string boot_image_option; 1412 std::string boot_oat_option; 1413 1414 // We are more like a compiler than a run-time. We don't want to execute code. 1415 options.push_back(std::make_pair("compiler", reinterpret_cast<void*>(NULL))); 1416 1417 if (boot_image_filename != NULL) { 1418 boot_image_option += "-Ximage:"; 1419 boot_image_option += boot_image_filename; 1420 options.push_back(std::make_pair(boot_image_option.c_str(), reinterpret_cast<void*>(NULL))); 1421 } 1422 if (image_filename != NULL) { 1423 image_option += "-Ximage:"; 1424 image_option += image_filename; 1425 options.push_back(std::make_pair(image_option.c_str(), reinterpret_cast<void*>(NULL))); 1426 } 1427 1428 if (!host_prefix->empty()) { 1429 options.push_back(std::make_pair("host-prefix", host_prefix->c_str())); 1430 } 1431 1432 if (!Runtime::Create(options, false)) { 1433 fprintf(stderr, "Failed to create runtime\n"); 1434 return EXIT_FAILURE; 1435 } 1436 UniquePtr<Runtime> runtime(Runtime::Current()); 1437 // Runtime::Create acquired the mutator_lock_ that is normally given away when we Runtime::Start, 1438 // give it away now and then switch to a more managable ScopedObjectAccess. 1439 Thread::Current()->TransitionFromRunnableToSuspended(kNative); 1440 ScopedObjectAccess soa(Thread::Current()); 1441 1442 gc::Heap* heap = Runtime::Current()->GetHeap(); 1443 gc::space::ImageSpace* image_space = heap->GetImageSpace(); 1444 CHECK(image_space != NULL); 1445 const ImageHeader& image_header = image_space->GetImageHeader(); 1446 if (!image_header.IsValid()) { 1447 fprintf(stderr, "Invalid image header %s\n", image_filename); 1448 return EXIT_FAILURE; 1449 } 1450 ImageDumper image_dumper(os, image_filename, *host_prefix.get(), *image_space, image_header); 1451 image_dumper.Dump(); 1452 return EXIT_SUCCESS; 1453} 1454 1455} // namespace art 1456 1457int main(int argc, char** argv) { 1458 return art::oatdump(argc, argv); 1459} 1460