runtime.cc revision 0de9f73afe3e835b63f2ee0c1416930656449f3f
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 "runtime.h" 18 19// sys/mount.h has to come before linux/fs.h due to redefinition of MS_RDONLY, MS_BIND, etc 20#include <sys/mount.h> 21#include <linux/fs.h> 22 23#include <signal.h> 24#include <sys/syscall.h> 25 26#include <cstdio> 27#include <cstdlib> 28#include <limits> 29#include <vector> 30 31#include "arch/arm/registers_arm.h" 32#include "arch/mips/registers_mips.h" 33#include "arch/x86/registers_x86.h" 34#include "atomic.h" 35#include "class_linker.h" 36#include "debugger.h" 37#include "gc/accounting/card_table-inl.h" 38#include "gc/heap.h" 39#include "gc/space/space.h" 40#include "image.h" 41#include "instrumentation.h" 42#include "intern_table.h" 43#include "invoke_arg_array_builder.h" 44#include "jni_internal.h" 45#include "mirror/art_field-inl.h" 46#include "mirror/art_method-inl.h" 47#include "mirror/array.h" 48#include "mirror/class-inl.h" 49#include "mirror/class_loader.h" 50#include "mirror/throwable.h" 51#include "monitor.h" 52#include "oat_file.h" 53#include "ScopedLocalRef.h" 54#include "scoped_thread_state_change.h" 55#include "signal_catcher.h" 56#include "signal_set.h" 57#include "sirt_ref.h" 58#include "thread.h" 59#include "thread_list.h" 60#include "trace.h" 61#include "UniquePtr.h" 62#include "verifier/method_verifier.h" 63#include "well_known_classes.h" 64 65#include "JniConstants.h" // Last to avoid LOG redefinition in ics-mr1-plus-art. 66 67namespace art { 68 69Runtime* Runtime::instance_ = NULL; 70 71Runtime::Runtime() 72 : is_compiler_(false), 73 is_zygote_(false), 74 is_concurrent_gc_enabled_(true), 75 is_explicit_gc_disabled_(false), 76 default_stack_size_(0), 77 heap_(NULL), 78 max_spins_before_thin_lock_inflation_(Monitor::kDefaultMaxSpinsBeforeThinLockInflation), 79 monitor_list_(NULL), 80 thread_list_(NULL), 81 intern_table_(NULL), 82 class_linker_(NULL), 83 signal_catcher_(NULL), 84 java_vm_(NULL), 85 pre_allocated_OutOfMemoryError_(NULL), 86 resolution_method_(NULL), 87 imt_conflict_method_(NULL), 88 default_imt_(NULL), 89 threads_being_born_(0), 90 shutdown_cond_(new ConditionVariable("Runtime shutdown", *Locks::runtime_shutdown_lock_)), 91 shutting_down_(false), 92 shutting_down_started_(false), 93 started_(false), 94 finished_starting_(false), 95 vfprintf_(NULL), 96 exit_(NULL), 97 abort_(NULL), 98 stats_enabled_(false), 99 method_trace_(0), 100 method_trace_file_size_(0), 101 instrumentation_(), 102 use_compile_time_class_path_(false), 103 main_thread_group_(NULL), 104 system_thread_group_(NULL), 105 system_class_loader_(NULL) { 106 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 107 callee_save_methods_[i] = NULL; 108 } 109} 110 111Runtime::~Runtime() { 112 if (dump_gc_performance_on_shutdown_) { 113 // This can't be called from the Heap destructor below because it 114 // could call RosAlloc::InspectAll() which needs the thread_list 115 // to be still alive. 116 heap_->DumpGcPerformanceInfo(LOG(INFO)); 117 } 118 119 Thread* self = Thread::Current(); 120 { 121 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 122 shutting_down_started_ = true; 123 while (threads_being_born_ > 0) { 124 shutdown_cond_->Wait(self); 125 } 126 shutting_down_ = true; 127 } 128 Trace::Shutdown(); 129 130 // Make sure to let the GC complete if it is running. 131 heap_->WaitForGcToComplete(self); 132 heap_->DeleteThreadPool(); 133 134 // For RosAlloc, revoke thread local runs. Note that in tests 135 // (common_test.h) we repeat allocating and deleting Runtime 136 // objects. 137 heap_->RevokeAllThreadLocalBuffers(); 138 139 // Make sure our internal threads are dead before we start tearing down things they're using. 140 Dbg::StopJdwp(); 141 delete signal_catcher_; 142 143 // Make sure all other non-daemon threads have terminated, and all daemon threads are suspended. 144 delete thread_list_; 145 delete monitor_list_; 146 delete class_linker_; 147 delete heap_; 148 delete intern_table_; 149 delete java_vm_; 150 Thread::Shutdown(); 151 QuasiAtomic::Shutdown(); 152 verifier::MethodVerifier::Shutdown(); 153 // TODO: acquire a static mutex on Runtime to avoid racing. 154 CHECK(instance_ == NULL || instance_ == this); 155 instance_ = NULL; 156} 157 158struct AbortState { 159 void Dump(std::ostream& os) { 160 if (gAborting > 1) { 161 os << "Runtime aborting --- recursively, so no thread-specific detail!\n"; 162 return; 163 } 164 gAborting++; 165 os << "Runtime aborting...\n"; 166 if (Runtime::Current() == NULL) { 167 os << "(Runtime does not yet exist!)\n"; 168 return; 169 } 170 Thread* self = Thread::Current(); 171 if (self == NULL) { 172 os << "(Aborting thread was not attached to runtime!)\n"; 173 } else { 174 // TODO: we're aborting and the ScopedObjectAccess may attempt to acquire the mutator_lock_ 175 // which may block indefinitely if there's a misbehaving thread holding it exclusively. 176 // The code below should be made robust to this. 177 ScopedObjectAccess soa(self); 178 os << "Aborting thread:\n"; 179 self->Dump(os); 180 if (self->IsExceptionPending()) { 181 ThrowLocation throw_location; 182 mirror::Throwable* exception = self->GetException(&throw_location); 183 os << "Pending exception " << PrettyTypeOf(exception) 184 << " thrown by '" << throw_location.Dump() << "'\n" 185 << exception->Dump(); 186 } 187 } 188 DumpAllThreads(os, self); 189 } 190 191 void DumpAllThreads(std::ostream& os, Thread* self) NO_THREAD_SAFETY_ANALYSIS { 192 bool tll_already_held = Locks::thread_list_lock_->IsExclusiveHeld(self); 193 bool ml_already_held = Locks::mutator_lock_->IsSharedHeld(self); 194 if (!tll_already_held || !ml_already_held) { 195 os << "Dumping all threads without appropriate locks held:" 196 << (!tll_already_held ? " thread list lock" : "") 197 << (!ml_already_held ? " mutator lock" : "") 198 << "\n"; 199 } 200 os << "All threads:\n"; 201 Runtime::Current()->GetThreadList()->DumpLocked(os); 202 } 203}; 204 205void Runtime::Abort() { 206 gAborting++; // set before taking any locks 207 208 // Ensure that we don't have multiple threads trying to abort at once, 209 // which would result in significantly worse diagnostics. 210 MutexLock mu(Thread::Current(), *Locks::abort_lock_); 211 212 // Get any pending output out of the way. 213 fflush(NULL); 214 215 // Many people have difficulty distinguish aborts from crashes, 216 // so be explicit. 217 AbortState state; 218 LOG(INTERNAL_FATAL) << Dumpable<AbortState>(state); 219 220 // Call the abort hook if we have one. 221 if (Runtime::Current() != NULL && Runtime::Current()->abort_ != NULL) { 222 LOG(INTERNAL_FATAL) << "Calling abort hook..."; 223 Runtime::Current()->abort_(); 224 // notreached 225 LOG(INTERNAL_FATAL) << "Unexpectedly returned from abort hook!"; 226 } 227 228#if defined(__GLIBC__) 229 // TODO: we ought to be able to use pthread_kill(3) here (or abort(3), 230 // which POSIX defines in terms of raise(3), which POSIX defines in terms 231 // of pthread_kill(3)). On Linux, though, libcorkscrew can't unwind through 232 // libpthread, which means the stacks we dump would be useless. Calling 233 // tgkill(2) directly avoids that. 234 syscall(__NR_tgkill, getpid(), GetTid(), SIGABRT); 235 // TODO: LLVM installs it's own SIGABRT handler so exit to be safe... Can we disable that in LLVM? 236 // If not, we could use sigaction(3) before calling tgkill(2) and lose this call to exit(3). 237 exit(1); 238#else 239 abort(); 240#endif 241 // notreached 242} 243 244bool Runtime::PreZygoteFork() { 245 heap_->PreZygoteFork(); 246 return true; 247} 248 249void Runtime::CallExitHook(jint status) { 250 if (exit_ != NULL) { 251 ScopedThreadStateChange tsc(Thread::Current(), kNative); 252 exit_(status); 253 LOG(WARNING) << "Exit hook returned instead of exiting!"; 254 } 255} 256 257// Parse a string of the form /[0-9]+[kKmMgG]?/, which is used to specify 258// memory sizes. [kK] indicates kilobytes, [mM] megabytes, and 259// [gG] gigabytes. 260// 261// "s" should point just past the "-Xm?" part of the string. 262// "div" specifies a divisor, e.g. 1024 if the value must be a multiple 263// of 1024. 264// 265// The spec says the -Xmx and -Xms options must be multiples of 1024. It 266// doesn't say anything about -Xss. 267// 268// Returns 0 (a useless size) if "s" is malformed or specifies a low or 269// non-evenly-divisible value. 270// 271size_t ParseMemoryOption(const char* s, size_t div) { 272 // strtoul accepts a leading [+-], which we don't want, 273 // so make sure our string starts with a decimal digit. 274 if (isdigit(*s)) { 275 char* s2; 276 size_t val = strtoul(s, &s2, 10); 277 if (s2 != s) { 278 // s2 should be pointing just after the number. 279 // If this is the end of the string, the user 280 // has specified a number of bytes. Otherwise, 281 // there should be exactly one more character 282 // that specifies a multiplier. 283 if (*s2 != '\0') { 284 // The remainder of the string is either a single multiplier 285 // character, or nothing to indicate that the value is in 286 // bytes. 287 char c = *s2++; 288 if (*s2 == '\0') { 289 size_t mul; 290 if (c == '\0') { 291 mul = 1; 292 } else if (c == 'k' || c == 'K') { 293 mul = KB; 294 } else if (c == 'm' || c == 'M') { 295 mul = MB; 296 } else if (c == 'g' || c == 'G') { 297 mul = GB; 298 } else { 299 // Unknown multiplier character. 300 return 0; 301 } 302 303 if (val <= std::numeric_limits<size_t>::max() / mul) { 304 val *= mul; 305 } else { 306 // Clamp to a multiple of 1024. 307 val = std::numeric_limits<size_t>::max() & ~(1024-1); 308 } 309 } else { 310 // There's more than one character after the numeric part. 311 return 0; 312 } 313 } 314 // The man page says that a -Xm value must be a multiple of 1024. 315 if (val % div == 0) { 316 return val; 317 } 318 } 319 } 320 return 0; 321} 322 323size_t ParseIntegerOrDie(const std::string& s) { 324 std::string::size_type colon = s.find(':'); 325 if (colon == std::string::npos) { 326 LOG(FATAL) << "Missing integer: " << s; 327 } 328 const char* begin = &s[colon + 1]; 329 char* end; 330 size_t result = strtoul(begin, &end, 10); 331 if (begin == end || *end != '\0') { 332 LOG(FATAL) << "Failed to parse integer in: " << s; 333 } 334 return result; 335} 336 337void Runtime::SweepSystemWeaks(RootVisitor* visitor, void* arg) { 338 GetInternTable()->SweepInternTableWeaks(visitor, arg); 339 GetMonitorList()->SweepMonitorList(visitor, arg); 340 GetJavaVM()->SweepJniWeakGlobals(visitor, arg); 341} 342 343Runtime::ParsedOptions* Runtime::ParsedOptions::Create(const Options& options, bool ignore_unrecognized) { 344 UniquePtr<ParsedOptions> parsed(new ParsedOptions()); 345 const char* boot_class_path_string = getenv("BOOTCLASSPATH"); 346 if (boot_class_path_string != NULL) { 347 parsed->boot_class_path_string_ = boot_class_path_string; 348 } 349 const char* class_path_string = getenv("CLASSPATH"); 350 if (class_path_string != NULL) { 351 parsed->class_path_string_ = class_path_string; 352 } 353 // -Xcheck:jni is off by default for regular builds but on by default in debug builds. 354 parsed->check_jni_ = kIsDebugBuild; 355 356 parsed->heap_initial_size_ = gc::Heap::kDefaultInitialSize; 357 parsed->heap_maximum_size_ = gc::Heap::kDefaultMaximumSize; 358 parsed->heap_min_free_ = gc::Heap::kDefaultMinFree; 359 parsed->heap_max_free_ = gc::Heap::kDefaultMaxFree; 360 parsed->heap_target_utilization_ = gc::Heap::kDefaultTargetUtilization; 361 parsed->heap_growth_limit_ = 0; // 0 means no growth limit. 362 // Default to number of processors minus one since the main GC thread also does work. 363 parsed->parallel_gc_threads_ = sysconf(_SC_NPROCESSORS_CONF) - 1; 364 // Only the main GC thread, no workers. 365 parsed->conc_gc_threads_ = 0; 366 // Default is CMS which is Sticky + Partial + Full CMS GC. 367 parsed->collector_type_ = gc::kCollectorTypeCMS; 368 parsed->stack_size_ = 0; // 0 means default. 369 parsed->max_spins_before_thin_lock_inflation_ = Monitor::kDefaultMaxSpinsBeforeThinLockInflation; 370 parsed->low_memory_mode_ = false; 371 372 parsed->is_compiler_ = false; 373 parsed->is_zygote_ = false; 374 parsed->interpreter_only_ = false; 375 parsed->is_explicit_gc_disabled_ = false; 376 377 parsed->long_pause_log_threshold_ = gc::Heap::kDefaultLongPauseLogThreshold; 378 parsed->long_gc_log_threshold_ = gc::Heap::kDefaultLongGCLogThreshold; 379 parsed->dump_gc_performance_on_shutdown_ = false; 380 parsed->ignore_max_footprint_ = false; 381 382 parsed->lock_profiling_threshold_ = 0; 383 parsed->hook_is_sensitive_thread_ = NULL; 384 385 parsed->hook_vfprintf_ = vfprintf; 386 parsed->hook_exit_ = exit; 387 parsed->hook_abort_ = NULL; // We don't call abort(3) by default; see Runtime::Abort. 388 389 parsed->compiler_filter_ = Runtime::kDefaultCompilerFilter; 390 parsed->huge_method_threshold_ = Runtime::kDefaultHugeMethodThreshold; 391 parsed->large_method_threshold_ = Runtime::kDefaultLargeMethodThreshold; 392 parsed->small_method_threshold_ = Runtime::kDefaultSmallMethodThreshold; 393 parsed->tiny_method_threshold_ = Runtime::kDefaultTinyMethodThreshold; 394 parsed->num_dex_methods_threshold_ = Runtime::kDefaultNumDexMethodsThreshold; 395 396 parsed->sea_ir_mode_ = false; 397// gLogVerbosity.class_linker = true; // TODO: don't check this in! 398// gLogVerbosity.compiler = true; // TODO: don't check this in! 399// gLogVerbosity.verifier = true; // TODO: don't check this in! 400// gLogVerbosity.heap = true; // TODO: don't check this in! 401// gLogVerbosity.gc = true; // TODO: don't check this in! 402// gLogVerbosity.jdwp = true; // TODO: don't check this in! 403// gLogVerbosity.jni = true; // TODO: don't check this in! 404// gLogVerbosity.monitor = true; // TODO: don't check this in! 405// gLogVerbosity.startup = true; // TODO: don't check this in! 406// gLogVerbosity.third_party_jni = true; // TODO: don't check this in! 407// gLogVerbosity.threads = true; // TODO: don't check this in! 408 409 parsed->method_trace_ = false; 410 parsed->method_trace_file_ = "/data/method-trace-file.bin"; 411 parsed->method_trace_file_size_ = 10 * MB; 412 413 for (size_t i = 0; i < options.size(); ++i) { 414 const std::string option(options[i].first); 415 if (true && options[0].first == "-Xzygote") { 416 LOG(INFO) << "option[" << i << "]=" << option; 417 } 418 if (StartsWith(option, "-Xbootclasspath:")) { 419 parsed->boot_class_path_string_ = option.substr(strlen("-Xbootclasspath:")).data(); 420 } else if (option == "-classpath" || option == "-cp") { 421 // TODO: support -Djava.class.path 422 i++; 423 if (i == options.size()) { 424 // TODO: usage 425 LOG(FATAL) << "Missing required class path value for " << option; 426 return NULL; 427 } 428 const StringPiece& value = options[i].first; 429 parsed->class_path_string_ = value.data(); 430 } else if (option == "bootclasspath") { 431 parsed->boot_class_path_ 432 = reinterpret_cast<const std::vector<const DexFile*>*>(options[i].second); 433 } else if (StartsWith(option, "-Ximage:")) { 434 parsed->image_ = option.substr(strlen("-Ximage:")).data(); 435 } else if (StartsWith(option, "-Xcheck:jni")) { 436 parsed->check_jni_ = true; 437 } else if (StartsWith(option, "-Xrunjdwp:") || StartsWith(option, "-agentlib:jdwp=")) { 438 std::string tail(option.substr(option[1] == 'X' ? 10 : 15)); 439 if (tail == "help" || !Dbg::ParseJdwpOptions(tail)) { 440 LOG(FATAL) << "Example: -Xrunjdwp:transport=dt_socket,address=8000,server=y\n" 441 << "Example: -Xrunjdwp:transport=dt_socket,address=localhost:6500,server=n"; 442 return NULL; 443 } 444 } else if (StartsWith(option, "-Xms")) { 445 size_t size = ParseMemoryOption(option.substr(strlen("-Xms")).c_str(), 1024); 446 if (size == 0) { 447 if (ignore_unrecognized) { 448 continue; 449 } 450 // TODO: usage 451 LOG(FATAL) << "Failed to parse " << option; 452 return NULL; 453 } 454 parsed->heap_initial_size_ = size; 455 } else if (StartsWith(option, "-Xmx")) { 456 size_t size = ParseMemoryOption(option.substr(strlen("-Xmx")).c_str(), 1024); 457 if (size == 0) { 458 if (ignore_unrecognized) { 459 continue; 460 } 461 // TODO: usage 462 LOG(FATAL) << "Failed to parse " << option; 463 return NULL; 464 } 465 parsed->heap_maximum_size_ = size; 466 } else if (StartsWith(option, "-XX:HeapGrowthLimit=")) { 467 size_t size = ParseMemoryOption(option.substr(strlen("-XX:HeapGrowthLimit=")).c_str(), 1024); 468 if (size == 0) { 469 if (ignore_unrecognized) { 470 continue; 471 } 472 // TODO: usage 473 LOG(FATAL) << "Failed to parse " << option; 474 return NULL; 475 } 476 parsed->heap_growth_limit_ = size; 477 } else if (StartsWith(option, "-XX:HeapMinFree=")) { 478 size_t size = ParseMemoryOption(option.substr(strlen("-XX:HeapMinFree=")).c_str(), 1024); 479 if (size == 0) { 480 if (ignore_unrecognized) { 481 continue; 482 } 483 // TODO: usage 484 LOG(FATAL) << "Failed to parse " << option; 485 return NULL; 486 } 487 parsed->heap_min_free_ = size; 488 } else if (StartsWith(option, "-XX:HeapMaxFree=")) { 489 size_t size = ParseMemoryOption(option.substr(strlen("-XX:HeapMaxFree=")).c_str(), 1024); 490 if (size == 0) { 491 if (ignore_unrecognized) { 492 continue; 493 } 494 // TODO: usage 495 LOG(FATAL) << "Failed to parse " << option; 496 return NULL; 497 } 498 parsed->heap_max_free_ = size; 499 } else if (StartsWith(option, "-XX:HeapTargetUtilization=")) { 500 std::istringstream iss(option.substr(strlen("-XX:HeapTargetUtilization="))); 501 double value; 502 iss >> value; 503 // Ensure that we have a value, there was no cruft after it and it satisfies a sensible range. 504 const bool sane_val = iss.eof() && (value >= 0.1) && (value <= 0.9); 505 if (!sane_val) { 506 if (ignore_unrecognized) { 507 continue; 508 } 509 LOG(FATAL) << "Invalid option '" << option << "'"; 510 return NULL; 511 } 512 parsed->heap_target_utilization_ = value; 513 } else if (StartsWith(option, "-XX:ParallelGCThreads=")) { 514 parsed->parallel_gc_threads_ = 515 ParseMemoryOption(option.substr(strlen("-XX:ParallelGCThreads=")).c_str(), 1024); 516 } else if (StartsWith(option, "-XX:ConcGCThreads=")) { 517 parsed->conc_gc_threads_ = 518 ParseMemoryOption(option.substr(strlen("-XX:ConcGCThreads=")).c_str(), 1024); 519 } else if (StartsWith(option, "-Xss")) { 520 size_t size = ParseMemoryOption(option.substr(strlen("-Xss")).c_str(), 1); 521 if (size == 0) { 522 if (ignore_unrecognized) { 523 continue; 524 } 525 // TODO: usage 526 LOG(FATAL) << "Failed to parse " << option; 527 return NULL; 528 } 529 parsed->stack_size_ = size; 530 } else if (StartsWith(option, "-XX:MaxSpinsBeforeThinLockInflation=")) { 531 parsed->max_spins_before_thin_lock_inflation_ = 532 strtoul(option.substr(strlen("-XX:MaxSpinsBeforeThinLockInflation=")).c_str(), 533 nullptr, 10); 534 } else if (option == "-XX:LongPauseLogThreshold") { 535 parsed->long_pause_log_threshold_ = 536 ParseMemoryOption(option.substr(strlen("-XX:LongPauseLogThreshold=")).c_str(), 1024); 537 } else if (option == "-XX:LongGCLogThreshold") { 538 parsed->long_gc_log_threshold_ = 539 ParseMemoryOption(option.substr(strlen("-XX:LongGCLogThreshold")).c_str(), 1024); 540 } else if (option == "-XX:DumpGCPerformanceOnShutdown") { 541 parsed->dump_gc_performance_on_shutdown_ = true; 542 } else if (option == "-XX:IgnoreMaxFootprint") { 543 parsed->ignore_max_footprint_ = true; 544 } else if (option == "-XX:LowMemoryMode") { 545 parsed->low_memory_mode_ = true; 546 } else if (StartsWith(option, "-D")) { 547 parsed->properties_.push_back(option.substr(strlen("-D"))); 548 } else if (StartsWith(option, "-Xjnitrace:")) { 549 parsed->jni_trace_ = option.substr(strlen("-Xjnitrace:")); 550 } else if (option == "compiler") { 551 parsed->is_compiler_ = true; 552 } else if (option == "-Xzygote") { 553 parsed->is_zygote_ = true; 554 } else if (option == "-Xint") { 555 parsed->interpreter_only_ = true; 556 } else if (StartsWith(option, "-Xgc:")) { 557 std::vector<std::string> gc_options; 558 Split(option.substr(strlen("-Xgc:")), ',', gc_options); 559 for (size_t i = 0; i < gc_options.size(); ++i) { 560 if (gc_options[i] == "MS" || gc_options[i] == "nonconcurrent") { 561 parsed->collector_type_ = gc::kCollectorTypeMS; 562 } else if (gc_options[i] == "CMS" || gc_options[i] == "concurrent") { 563 parsed->collector_type_ = gc::kCollectorTypeCMS; 564 } else if (gc_options[i] == "SS") { 565 parsed->collector_type_ = gc::kCollectorTypeSS; 566 } else { 567 LOG(WARNING) << "Ignoring unknown -Xgc option: " << gc_options[i]; 568 } 569 } 570 } else if (option == "-XX:+DisableExplicitGC") { 571 parsed->is_explicit_gc_disabled_ = true; 572 } else if (StartsWith(option, "-verbose:")) { 573 std::vector<std::string> verbose_options; 574 Split(option.substr(strlen("-verbose:")), ',', verbose_options); 575 for (size_t i = 0; i < verbose_options.size(); ++i) { 576 if (verbose_options[i] == "class") { 577 gLogVerbosity.class_linker = true; 578 } else if (verbose_options[i] == "verifier") { 579 gLogVerbosity.verifier = true; 580 } else if (verbose_options[i] == "compiler") { 581 gLogVerbosity.compiler = true; 582 } else if (verbose_options[i] == "heap") { 583 gLogVerbosity.heap = true; 584 } else if (verbose_options[i] == "gc") { 585 gLogVerbosity.gc = true; 586 } else if (verbose_options[i] == "jdwp") { 587 gLogVerbosity.jdwp = true; 588 } else if (verbose_options[i] == "jni") { 589 gLogVerbosity.jni = true; 590 } else if (verbose_options[i] == "monitor") { 591 gLogVerbosity.monitor = true; 592 } else if (verbose_options[i] == "startup") { 593 gLogVerbosity.startup = true; 594 } else if (verbose_options[i] == "third-party-jni") { 595 gLogVerbosity.third_party_jni = true; 596 } else if (verbose_options[i] == "threads") { 597 gLogVerbosity.threads = true; 598 } else { 599 LOG(WARNING) << "Ignoring unknown -verbose option: " << verbose_options[i]; 600 } 601 } 602 } else if (StartsWith(option, "-Xjnigreflimit:")) { 603 // Silently ignored for backwards compatibility. 604 } else if (StartsWith(option, "-Xlockprofthreshold:")) { 605 parsed->lock_profiling_threshold_ = ParseIntegerOrDie(option); 606 } else if (StartsWith(option, "-Xstacktracefile:")) { 607 parsed->stack_trace_file_ = option.substr(strlen("-Xstacktracefile:")); 608 } else if (option == "sensitiveThread") { 609 parsed->hook_is_sensitive_thread_ = reinterpret_cast<bool (*)()>(const_cast<void*>(options[i].second)); 610 } else if (option == "vfprintf") { 611 parsed->hook_vfprintf_ = 612 reinterpret_cast<int (*)(FILE *, const char*, va_list)>(const_cast<void*>(options[i].second)); 613 } else if (option == "exit") { 614 parsed->hook_exit_ = reinterpret_cast<void(*)(jint)>(const_cast<void*>(options[i].second)); 615 } else if (option == "abort") { 616 parsed->hook_abort_ = reinterpret_cast<void(*)()>(const_cast<void*>(options[i].second)); 617 } else if (option == "host-prefix") { 618 parsed->host_prefix_ = reinterpret_cast<const char*>(options[i].second); 619 } else if (option == "-Xgenregmap" || option == "-Xgc:precise") { 620 // We silently ignore these for backwards compatibility. 621 } else if (option == "-Xmethod-trace") { 622 parsed->method_trace_ = true; 623 } else if (StartsWith(option, "-Xmethod-trace-file:")) { 624 parsed->method_trace_file_ = option.substr(strlen("-Xmethod-trace-file:")); 625 } else if (StartsWith(option, "-Xmethod-trace-file-size:")) { 626 parsed->method_trace_file_size_ = ParseIntegerOrDie(option); 627 } else if (option == "-Xprofile:threadcpuclock") { 628 Trace::SetDefaultClockSource(kProfilerClockSourceThreadCpu); 629 } else if (option == "-Xprofile:wallclock") { 630 Trace::SetDefaultClockSource(kProfilerClockSourceWall); 631 } else if (option == "-Xprofile:dualclock") { 632 Trace::SetDefaultClockSource(kProfilerClockSourceDual); 633 } else if (option == "-compiler-filter:interpret-only") { 634 parsed->compiler_filter_ = kInterpretOnly; 635 } else if (option == "-compiler-filter:space") { 636 parsed->compiler_filter_ = kSpace; 637 } else if (option == "-compiler-filter:balanced") { 638 parsed->compiler_filter_ = kBalanced; 639 } else if (option == "-compiler-filter:speed") { 640 parsed->compiler_filter_ = kSpeed; 641 } else if (option == "-compiler-filter:everything") { 642 parsed->compiler_filter_ = kEverything; 643 } else if (option == "-sea_ir") { 644 parsed->sea_ir_mode_ = true; 645 } else if (StartsWith(option, "-huge-method-max:")) { 646 parsed->huge_method_threshold_ = ParseIntegerOrDie(option); 647 } else if (StartsWith(option, "-large-method-max:")) { 648 parsed->large_method_threshold_ = ParseIntegerOrDie(option); 649 } else if (StartsWith(option, "-small-method-max:")) { 650 parsed->small_method_threshold_ = ParseIntegerOrDie(option); 651 } else if (StartsWith(option, "-tiny-method-max:")) { 652 parsed->tiny_method_threshold_ = ParseIntegerOrDie(option); 653 } else if (StartsWith(option, "-num-dex-methods-max:")) { 654 parsed->num_dex_methods_threshold_ = ParseIntegerOrDie(option); 655 } else { 656 if (!ignore_unrecognized) { 657 // TODO: print usage via vfprintf 658 LOG(ERROR) << "Unrecognized option " << option; 659 // TODO: this should exit, but for now tolerate unknown options 660 // return NULL; 661 } 662 } 663 } 664 665 // If a reference to the dalvik core.jar snuck in, replace it with 666 // the art specific version. This can happen with on device 667 // boot.art/boot.oat generation by GenerateImage which relies on the 668 // value of BOOTCLASSPATH. 669 std::string core_jar("/core.jar"); 670 size_t core_jar_pos = parsed->boot_class_path_string_.find(core_jar); 671 if (core_jar_pos != std::string::npos) { 672 parsed->boot_class_path_string_.replace(core_jar_pos, core_jar.size(), "/core-libart.jar"); 673 } 674 675 if (!parsed->is_compiler_ && parsed->image_.empty()) { 676 parsed->image_ += GetAndroidRoot(); 677 parsed->image_ += "/framework/boot.art"; 678 } 679 if (parsed->heap_growth_limit_ == 0) { 680 parsed->heap_growth_limit_ = parsed->heap_maximum_size_; 681 } 682 683 return parsed.release(); 684} 685 686bool Runtime::Create(const Options& options, bool ignore_unrecognized) { 687 // TODO: acquire a static mutex on Runtime to avoid racing. 688 if (Runtime::instance_ != NULL) { 689 return false; 690 } 691 InitLogging(NULL); // Calls Locks::Init() as a side effect. 692 instance_ = new Runtime; 693 if (!instance_->Init(options, ignore_unrecognized)) { 694 delete instance_; 695 instance_ = NULL; 696 return false; 697 } 698 return true; 699} 700 701jobject CreateSystemClassLoader() { 702 if (Runtime::Current()->UseCompileTimeClassPath()) { 703 return NULL; 704 } 705 706 ScopedObjectAccess soa(Thread::Current()); 707 708 mirror::Class* class_loader_class = 709 soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_ClassLoader); 710 CHECK(Runtime::Current()->GetClassLinker()->EnsureInitialized(class_loader_class, true, true)); 711 712 mirror::ArtMethod* getSystemClassLoader = 713 class_loader_class->FindDirectMethod("getSystemClassLoader", "()Ljava/lang/ClassLoader;"); 714 CHECK(getSystemClassLoader != NULL); 715 716 JValue result; 717 ArgArray arg_array(NULL, 0); 718 InvokeWithArgArray(soa, getSystemClassLoader, &arg_array, &result, 'L'); 719 mirror::ClassLoader* class_loader = down_cast<mirror::ClassLoader*>(result.GetL()); 720 CHECK(class_loader != NULL); 721 722 JNIEnv* env = soa.Self()->GetJniEnv(); 723 ScopedLocalRef<jobject> system_class_loader(env, soa.AddLocalReference<jobject>(class_loader)); 724 CHECK(system_class_loader.get() != NULL); 725 726 soa.Self()->SetClassLoaderOverride(class_loader); 727 728 mirror::Class* thread_class = soa.Decode<mirror::Class*>(WellKnownClasses::java_lang_Thread); 729 CHECK(Runtime::Current()->GetClassLinker()->EnsureInitialized(thread_class, true, true)); 730 731 mirror::ArtField* contextClassLoader = thread_class->FindDeclaredInstanceField("contextClassLoader", 732 "Ljava/lang/ClassLoader;"); 733 CHECK(contextClassLoader != NULL); 734 735 contextClassLoader->SetObject(soa.Self()->GetPeer(), class_loader); 736 737 return env->NewGlobalRef(system_class_loader.get()); 738} 739 740bool Runtime::Start() { 741 VLOG(startup) << "Runtime::Start entering"; 742 743 CHECK(host_prefix_.empty()) << host_prefix_; 744 745 // Restore main thread state to kNative as expected by native code. 746 Thread* self = Thread::Current(); 747 self->TransitionFromRunnableToSuspended(kNative); 748 749 started_ = true; 750 751 // InitNativeMethods needs to be after started_ so that the classes 752 // it touches will have methods linked to the oat file if necessary. 753 InitNativeMethods(); 754 755 // Initialize well known thread group values that may be accessed threads while attaching. 756 InitThreadGroups(self); 757 758 Thread::FinishStartup(); 759 760 if (is_zygote_) { 761 if (!InitZygote()) { 762 return false; 763 } 764 } else { 765 DidForkFromZygote(); 766 } 767 768 StartDaemonThreads(); 769 770 system_class_loader_ = CreateSystemClassLoader(); 771 772 self->GetJniEnv()->locals.AssertEmpty(); 773 774 VLOG(startup) << "Runtime::Start exiting"; 775 776 finished_starting_ = true; 777 778 return true; 779} 780 781void Runtime::EndThreadBirth() EXCLUSIVE_LOCKS_REQUIRED(Locks::runtime_shutdown_lock_) { 782 DCHECK_GT(threads_being_born_, 0U); 783 threads_being_born_--; 784 if (shutting_down_started_ && threads_being_born_ == 0) { 785 shutdown_cond_->Broadcast(Thread::Current()); 786 } 787} 788 789// Do zygote-mode-only initialization. 790bool Runtime::InitZygote() { 791 // zygote goes into its own process group 792 setpgid(0, 0); 793 794 // See storage config details at http://source.android.com/tech/storage/ 795 // Create private mount namespace shared by all children 796 if (unshare(CLONE_NEWNS) == -1) { 797 PLOG(WARNING) << "Failed to unshare()"; 798 return false; 799 } 800 801 // Mark rootfs as being a slave so that changes from default 802 // namespace only flow into our children. 803 if (mount("rootfs", "/", NULL, (MS_SLAVE | MS_REC), NULL) == -1) { 804 PLOG(WARNING) << "Failed to mount() rootfs as MS_SLAVE"; 805 return false; 806 } 807 808 // Create a staging tmpfs that is shared by our children; they will 809 // bind mount storage into their respective private namespaces, which 810 // are isolated from each other. 811 const char* target_base = getenv("EMULATED_STORAGE_TARGET"); 812 if (target_base != NULL) { 813 if (mount("tmpfs", target_base, "tmpfs", MS_NOSUID | MS_NODEV, 814 "uid=0,gid=1028,mode=0751") == -1) { 815 LOG(WARNING) << "Failed to mount tmpfs to " << target_base; 816 return false; 817 } 818 } 819 820 return true; 821} 822 823void Runtime::DidForkFromZygote() { 824 is_zygote_ = false; 825 826 // Create the thread pool. 827 heap_->CreateThreadPool(); 828 829 StartSignalCatcher(); 830 831 // Start the JDWP thread. If the command-line debugger flags specified "suspend=y", 832 // this will pause the runtime, so we probably want this to come last. 833 Dbg::StartJdwp(); 834} 835 836void Runtime::StartSignalCatcher() { 837 if (!is_zygote_) { 838 signal_catcher_ = new SignalCatcher(stack_trace_file_); 839 } 840} 841 842bool Runtime::IsShuttingDown(Thread* self) { 843 MutexLock mu(self, *Locks::runtime_shutdown_lock_); 844 return IsShuttingDownLocked(); 845} 846 847void Runtime::StartDaemonThreads() { 848 VLOG(startup) << "Runtime::StartDaemonThreads entering"; 849 850 Thread* self = Thread::Current(); 851 852 // Must be in the kNative state for calling native methods. 853 CHECK_EQ(self->GetState(), kNative); 854 855 JNIEnv* env = self->GetJniEnv(); 856 env->CallStaticVoidMethod(WellKnownClasses::java_lang_Daemons, 857 WellKnownClasses::java_lang_Daemons_start); 858 if (env->ExceptionCheck()) { 859 env->ExceptionDescribe(); 860 LOG(FATAL) << "Error starting java.lang.Daemons"; 861 } 862 863 VLOG(startup) << "Runtime::StartDaemonThreads exiting"; 864} 865 866bool Runtime::Init(const Options& raw_options, bool ignore_unrecognized) { 867 CHECK_EQ(sysconf(_SC_PAGE_SIZE), kPageSize); 868 869 UniquePtr<ParsedOptions> options(ParsedOptions::Create(raw_options, ignore_unrecognized)); 870 if (options.get() == NULL) { 871 LOG(ERROR) << "Failed to parse options"; 872 return false; 873 } 874 VLOG(startup) << "Runtime::Init -verbose:startup enabled"; 875 876 QuasiAtomic::Startup(); 877 878 Monitor::Init(options->lock_profiling_threshold_, options->hook_is_sensitive_thread_); 879 880 host_prefix_ = options->host_prefix_; 881 boot_class_path_string_ = options->boot_class_path_string_; 882 class_path_string_ = options->class_path_string_; 883 properties_ = options->properties_; 884 885 is_compiler_ = options->is_compiler_; 886 is_zygote_ = options->is_zygote_; 887 is_explicit_gc_disabled_ = options->is_explicit_gc_disabled_; 888 889 compiler_filter_ = options->compiler_filter_; 890 huge_method_threshold_ = options->huge_method_threshold_; 891 large_method_threshold_ = options->large_method_threshold_; 892 small_method_threshold_ = options->small_method_threshold_; 893 tiny_method_threshold_ = options->tiny_method_threshold_; 894 num_dex_methods_threshold_ = options->num_dex_methods_threshold_; 895 896 sea_ir_mode_ = options->sea_ir_mode_; 897 vfprintf_ = options->hook_vfprintf_; 898 exit_ = options->hook_exit_; 899 abort_ = options->hook_abort_; 900 901 default_stack_size_ = options->stack_size_; 902 stack_trace_file_ = options->stack_trace_file_; 903 904 max_spins_before_thin_lock_inflation_ = options->max_spins_before_thin_lock_inflation_; 905 906 monitor_list_ = new MonitorList; 907 thread_list_ = new ThreadList; 908 intern_table_ = new InternTable; 909 910 911 if (options->interpreter_only_) { 912 GetInstrumentation()->ForceInterpretOnly(); 913 } 914 915 heap_ = new gc::Heap(options->heap_initial_size_, 916 options->heap_growth_limit_, 917 options->heap_min_free_, 918 options->heap_max_free_, 919 options->heap_target_utilization_, 920 options->heap_maximum_size_, 921 options->image_, 922 options->collector_type_, 923 options->parallel_gc_threads_, 924 options->conc_gc_threads_, 925 options->low_memory_mode_, 926 options->long_pause_log_threshold_, 927 options->long_gc_log_threshold_, 928 options->ignore_max_footprint_); 929 930 dump_gc_performance_on_shutdown_ = options->dump_gc_performance_on_shutdown_; 931 932 BlockSignals(); 933 InitPlatformSignalHandlers(); 934 935 java_vm_ = new JavaVMExt(this, options.get()); 936 937 Thread::Startup(); 938 939 // ClassLinker needs an attached thread, but we can't fully attach a thread without creating 940 // objects. We can't supply a thread group yet; it will be fixed later. Since we are the main 941 // thread, we do not get a java peer. 942 Thread* self = Thread::Attach("main", false, NULL, false); 943 CHECK_EQ(self->thin_lock_thread_id_, ThreadList::kMainThreadId); 944 CHECK(self != NULL); 945 946 // Set us to runnable so tools using a runtime can allocate and GC by default 947 self->TransitionFromSuspendedToRunnable(); 948 949 // Now we're attached, we can take the heap locks and validate the heap. 950 GetHeap()->EnableObjectValidation(); 951 952 CHECK_GE(GetHeap()->GetContinuousSpaces().size(), 1U); 953 class_linker_ = new ClassLinker(intern_table_); 954 if (GetHeap()->HasImageSpace()) { 955 class_linker_->InitFromImage(); 956 } else { 957 CHECK(options->boot_class_path_ != NULL); 958 CHECK_NE(options->boot_class_path_->size(), 0U); 959 class_linker_->InitFromCompiler(*options->boot_class_path_); 960 } 961 CHECK(class_linker_ != NULL); 962 verifier::MethodVerifier::Init(); 963 964 method_trace_ = options->method_trace_; 965 method_trace_file_ = options->method_trace_file_; 966 method_trace_file_size_ = options->method_trace_file_size_; 967 968 if (options->method_trace_) { 969 Trace::Start(options->method_trace_file_.c_str(), -1, options->method_trace_file_size_, 0, 970 false, false, 0); 971 } 972 973 // Pre-allocate an OutOfMemoryError for the double-OOME case. 974 self->ThrowNewException(ThrowLocation(), "Ljava/lang/OutOfMemoryError;", 975 "OutOfMemoryError thrown while trying to throw OutOfMemoryError; no stack available"); 976 pre_allocated_OutOfMemoryError_ = self->GetException(NULL); 977 self->ClearException(); 978 979 VLOG(startup) << "Runtime::Init exiting"; 980 return true; 981} 982 983void Runtime::InitNativeMethods() { 984 VLOG(startup) << "Runtime::InitNativeMethods entering"; 985 Thread* self = Thread::Current(); 986 JNIEnv* env = self->GetJniEnv(); 987 988 // Must be in the kNative state for calling native methods (JNI_OnLoad code). 989 CHECK_EQ(self->GetState(), kNative); 990 991 // First set up JniConstants, which is used by both the runtime's built-in native 992 // methods and libcore. 993 JniConstants::init(env); 994 WellKnownClasses::Init(env); 995 996 // Then set up the native methods provided by the runtime itself. 997 RegisterRuntimeNativeMethods(env); 998 999 // Then set up libcore, which is just a regular JNI library with a regular JNI_OnLoad. 1000 // Most JNI libraries can just use System.loadLibrary, but libcore can't because it's 1001 // the library that implements System.loadLibrary! 1002 { 1003 std::string mapped_name(StringPrintf(OS_SHARED_LIB_FORMAT_STR, "javacore")); 1004 std::string reason; 1005 self->TransitionFromSuspendedToRunnable(); 1006 if (!instance_->java_vm_->LoadNativeLibrary(mapped_name, NULL, &reason)) { 1007 LOG(FATAL) << "LoadNativeLibrary failed for \"" << mapped_name << "\": " << reason; 1008 } 1009 self->TransitionFromRunnableToSuspended(kNative); 1010 } 1011 1012 // Initialize well known classes that may invoke runtime native methods. 1013 WellKnownClasses::LateInit(env); 1014 1015 VLOG(startup) << "Runtime::InitNativeMethods exiting"; 1016} 1017 1018void Runtime::InitThreadGroups(Thread* self) { 1019 JNIEnvExt* env = self->GetJniEnv(); 1020 ScopedJniEnvLocalRefState env_state(env); 1021 main_thread_group_ = 1022 env->NewGlobalRef(env->GetStaticObjectField(WellKnownClasses::java_lang_ThreadGroup, 1023 WellKnownClasses::java_lang_ThreadGroup_mainThreadGroup)); 1024 CHECK(main_thread_group_ != NULL || IsCompiler()); 1025 system_thread_group_ = 1026 env->NewGlobalRef(env->GetStaticObjectField(WellKnownClasses::java_lang_ThreadGroup, 1027 WellKnownClasses::java_lang_ThreadGroup_systemThreadGroup)); 1028 CHECK(system_thread_group_ != NULL || IsCompiler()); 1029} 1030 1031jobject Runtime::GetMainThreadGroup() const { 1032 CHECK(main_thread_group_ != NULL || IsCompiler()); 1033 return main_thread_group_; 1034} 1035 1036jobject Runtime::GetSystemThreadGroup() const { 1037 CHECK(system_thread_group_ != NULL || IsCompiler()); 1038 return system_thread_group_; 1039} 1040 1041jobject Runtime::GetSystemClassLoader() const { 1042 CHECK(system_class_loader_ != NULL || IsCompiler()); 1043 return system_class_loader_; 1044} 1045 1046void Runtime::RegisterRuntimeNativeMethods(JNIEnv* env) { 1047#define REGISTER(FN) extern void FN(JNIEnv*); FN(env) 1048 // Register Throwable first so that registration of other native methods can throw exceptions 1049 REGISTER(register_java_lang_Throwable); 1050 REGISTER(register_dalvik_system_DexFile); 1051 REGISTER(register_dalvik_system_VMDebug); 1052 REGISTER(register_dalvik_system_VMRuntime); 1053 REGISTER(register_dalvik_system_VMStack); 1054 REGISTER(register_dalvik_system_Zygote); 1055 REGISTER(register_java_lang_Class); 1056 REGISTER(register_java_lang_DexCache); 1057 REGISTER(register_java_lang_Object); 1058 REGISTER(register_java_lang_Runtime); 1059 REGISTER(register_java_lang_String); 1060 REGISTER(register_java_lang_System); 1061 REGISTER(register_java_lang_Thread); 1062 REGISTER(register_java_lang_VMClassLoader); 1063 REGISTER(register_java_lang_reflect_Array); 1064 REGISTER(register_java_lang_reflect_Constructor); 1065 REGISTER(register_java_lang_reflect_Field); 1066 REGISTER(register_java_lang_reflect_Method); 1067 REGISTER(register_java_lang_reflect_Proxy); 1068 REGISTER(register_java_util_concurrent_atomic_AtomicLong); 1069 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmServer); 1070 REGISTER(register_org_apache_harmony_dalvik_ddmc_DdmVmInternal); 1071 REGISTER(register_sun_misc_Unsafe); 1072#undef REGISTER 1073} 1074 1075void Runtime::DumpForSigQuit(std::ostream& os) { 1076 GetClassLinker()->DumpForSigQuit(os); 1077 GetInternTable()->DumpForSigQuit(os); 1078 GetJavaVM()->DumpForSigQuit(os); 1079 GetHeap()->DumpForSigQuit(os); 1080 os << "\n"; 1081 1082 thread_list_->DumpForSigQuit(os); 1083 BaseMutex::DumpAll(os); 1084} 1085 1086void Runtime::DumpLockHolders(std::ostream& os) { 1087 uint64_t mutator_lock_owner = Locks::mutator_lock_->GetExclusiveOwnerTid(); 1088 pid_t thread_list_lock_owner = GetThreadList()->GetLockOwner(); 1089 pid_t classes_lock_owner = GetClassLinker()->GetClassesLockOwner(); 1090 pid_t dex_lock_owner = GetClassLinker()->GetDexLockOwner(); 1091 if ((thread_list_lock_owner | classes_lock_owner | dex_lock_owner) != 0) { 1092 os << "Mutator lock exclusive owner tid: " << mutator_lock_owner << "\n" 1093 << "ThreadList lock owner tid: " << thread_list_lock_owner << "\n" 1094 << "ClassLinker classes lock owner tid: " << classes_lock_owner << "\n" 1095 << "ClassLinker dex lock owner tid: " << dex_lock_owner << "\n"; 1096 } 1097} 1098 1099void Runtime::SetStatsEnabled(bool new_state) { 1100 if (new_state == true) { 1101 GetStats()->Clear(~0); 1102 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1103 Thread::Current()->GetStats()->Clear(~0); 1104 GetInstrumentation()->InstrumentQuickAllocEntryPoints(); 1105 } else { 1106 GetInstrumentation()->UninstrumentQuickAllocEntryPoints(); 1107 } 1108 stats_enabled_ = new_state; 1109} 1110 1111void Runtime::ResetStats(int kinds) { 1112 GetStats()->Clear(kinds & 0xffff); 1113 // TODO: wouldn't it make more sense to clear _all_ threads' stats? 1114 Thread::Current()->GetStats()->Clear(kinds >> 16); 1115} 1116 1117int32_t Runtime::GetStat(int kind) { 1118 RuntimeStats* stats; 1119 if (kind < (1<<16)) { 1120 stats = GetStats(); 1121 } else { 1122 stats = Thread::Current()->GetStats(); 1123 kind >>= 16; 1124 } 1125 switch (kind) { 1126 case KIND_ALLOCATED_OBJECTS: 1127 return stats->allocated_objects; 1128 case KIND_ALLOCATED_BYTES: 1129 return stats->allocated_bytes; 1130 case KIND_FREED_OBJECTS: 1131 return stats->freed_objects; 1132 case KIND_FREED_BYTES: 1133 return stats->freed_bytes; 1134 case KIND_GC_INVOCATIONS: 1135 return stats->gc_for_alloc_count; 1136 case KIND_CLASS_INIT_COUNT: 1137 return stats->class_init_count; 1138 case KIND_CLASS_INIT_TIME: 1139 // Convert ns to us, reduce to 32 bits. 1140 return static_cast<int>(stats->class_init_time_ns / 1000); 1141 case KIND_EXT_ALLOCATED_OBJECTS: 1142 case KIND_EXT_ALLOCATED_BYTES: 1143 case KIND_EXT_FREED_OBJECTS: 1144 case KIND_EXT_FREED_BYTES: 1145 return 0; // backward compatibility 1146 default: 1147 LOG(FATAL) << "Unknown statistic " << kind; 1148 return -1; // unreachable 1149 } 1150} 1151 1152void Runtime::BlockSignals() { 1153 SignalSet signals; 1154 signals.Add(SIGPIPE); 1155 // SIGQUIT is used to dump the runtime's state (including stack traces). 1156 signals.Add(SIGQUIT); 1157 // SIGUSR1 is used to initiate a GC. 1158 signals.Add(SIGUSR1); 1159 signals.Block(); 1160} 1161 1162bool Runtime::AttachCurrentThread(const char* thread_name, bool as_daemon, jobject thread_group, 1163 bool create_peer) { 1164 bool success = Thread::Attach(thread_name, as_daemon, thread_group, create_peer) != NULL; 1165 if (thread_name == NULL) { 1166 LOG(WARNING) << *Thread::Current() << " attached without supplying a name"; 1167 } 1168 return success; 1169} 1170 1171void Runtime::DetachCurrentThread() { 1172 Thread* self = Thread::Current(); 1173 if (self == NULL) { 1174 LOG(FATAL) << "attempting to detach thread that is not attached"; 1175 } 1176 if (self->HasManagedStack()) { 1177 LOG(FATAL) << *Thread::Current() << " attempting to detach while still running code"; 1178 } 1179 thread_list_->Unregister(self); 1180} 1181 1182 mirror::Throwable* Runtime::GetPreAllocatedOutOfMemoryError() const { 1183 if (pre_allocated_OutOfMemoryError_ == NULL) { 1184 LOG(ERROR) << "Failed to return pre-allocated OOME"; 1185 } 1186 return pre_allocated_OutOfMemoryError_; 1187} 1188 1189void Runtime::VisitConcurrentRoots(RootVisitor* visitor, void* arg, bool only_dirty, 1190 bool clean_dirty) { 1191 intern_table_->VisitRoots(visitor, arg, only_dirty, clean_dirty); 1192 class_linker_->VisitRoots(visitor, arg, only_dirty, clean_dirty); 1193} 1194 1195void Runtime::VisitNonThreadRoots(RootVisitor* visitor, void* arg) { 1196 java_vm_->VisitRoots(visitor, arg); 1197 if (pre_allocated_OutOfMemoryError_ != nullptr) { 1198 pre_allocated_OutOfMemoryError_ = reinterpret_cast<mirror::Throwable*>( 1199 visitor(pre_allocated_OutOfMemoryError_, arg)); 1200 DCHECK(pre_allocated_OutOfMemoryError_ != nullptr); 1201 } 1202 resolution_method_ = down_cast<mirror::ArtMethod*>(visitor(resolution_method_, arg)); 1203 DCHECK(resolution_method_ != nullptr); 1204 if (HasImtConflictMethod()) { 1205 imt_conflict_method_ = down_cast<mirror::ArtMethod*>(visitor(imt_conflict_method_, arg)); 1206 } 1207 if (HasDefaultImt()) { 1208 default_imt_ = down_cast<mirror::ObjectArray<mirror::ArtMethod>*>(visitor(default_imt_, arg)); 1209 } 1210 1211 for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) { 1212 if (callee_save_methods_[i] != nullptr) { 1213 callee_save_methods_[i] = down_cast<mirror::ArtMethod*>( 1214 visitor(callee_save_methods_[i], arg)); 1215 } 1216 } 1217} 1218 1219void Runtime::VisitNonConcurrentRoots(RootVisitor* visitor, void* arg) { 1220 thread_list_->VisitRoots(visitor, arg); 1221 VisitNonThreadRoots(visitor, arg); 1222} 1223 1224void Runtime::VisitRoots(RootVisitor* visitor, void* arg, bool only_dirty, bool clean_dirty) { 1225 VisitConcurrentRoots(visitor, arg, only_dirty, clean_dirty); 1226 VisitNonConcurrentRoots(visitor, arg); 1227} 1228 1229mirror::ObjectArray<mirror::ArtMethod>* Runtime::CreateDefaultImt(ClassLinker* cl) { 1230 Thread* self = Thread::Current(); 1231 SirtRef<mirror::ObjectArray<mirror::ArtMethod> > imtable(self, cl->AllocArtMethodArray(self, 64)); 1232 mirror::ArtMethod* imt_conflict_method = Runtime::Current()->GetImtConflictMethod(); 1233 for (size_t i = 0; i < static_cast<size_t>(imtable->GetLength()); i++) { 1234 imtable->Set(i, imt_conflict_method); 1235 } 1236 return imtable.get(); 1237} 1238 1239mirror::ArtMethod* Runtime::CreateImtConflictMethod() { 1240 Thread* self = Thread::Current(); 1241 Runtime* r = Runtime::Current(); 1242 ClassLinker* cl = r->GetClassLinker(); 1243 SirtRef<mirror::ArtMethod> method(self, cl->AllocArtMethod(self)); 1244 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1245 // TODO: use a special method for imt conflict method saves 1246 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1247 // When compiling, the code pointer will get set later when the image is loaded. 1248 method->SetEntryPointFromCompiledCode(r->IsCompiler() ? NULL : GetImtConflictTrampoline(cl)); 1249 return method.get(); 1250} 1251 1252mirror::ArtMethod* Runtime::CreateResolutionMethod() { 1253 Thread* self = Thread::Current(); 1254 Runtime* r = Runtime::Current(); 1255 ClassLinker* cl = r->GetClassLinker(); 1256 SirtRef<mirror::ArtMethod> method(self, cl->AllocArtMethod(self)); 1257 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1258 // TODO: use a special method for resolution method saves 1259 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1260 // When compiling, the code pointer will get set later when the image is loaded. 1261 method->SetEntryPointFromCompiledCode(r->IsCompiler() ? NULL : GetResolutionTrampoline(cl)); 1262 return method.get(); 1263} 1264 1265mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(InstructionSet instruction_set, 1266 CalleeSaveType type) { 1267 Thread* self = Thread::Current(); 1268 Runtime* r = Runtime::Current(); 1269 ClassLinker* cl = r->GetClassLinker(); 1270 SirtRef<mirror::ArtMethod> method(self, cl->AllocArtMethod(self)); 1271 method->SetDeclaringClass(mirror::ArtMethod::GetJavaLangReflectArtMethod()); 1272 // TODO: use a special method for callee saves 1273 method->SetDexMethodIndex(DexFile::kDexNoIndex); 1274 method->SetEntryPointFromCompiledCode(NULL); 1275 if ((instruction_set == kThumb2) || (instruction_set == kArm)) { 1276 uint32_t ref_spills = (1 << art::arm::R5) | (1 << art::arm::R6) | (1 << art::arm::R7) | 1277 (1 << art::arm::R8) | (1 << art::arm::R10) | (1 << art::arm::R11); 1278 uint32_t arg_spills = (1 << art::arm::R1) | (1 << art::arm::R2) | (1 << art::arm::R3); 1279 uint32_t all_spills = (1 << art::arm::R4) | (1 << art::arm::R9); 1280 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) | 1281 (type == kSaveAll ? all_spills : 0) | (1 << art::arm::LR); 1282 uint32_t fp_all_spills = (1 << art::arm::S0) | (1 << art::arm::S1) | (1 << art::arm::S2) | 1283 (1 << art::arm::S3) | (1 << art::arm::S4) | (1 << art::arm::S5) | 1284 (1 << art::arm::S6) | (1 << art::arm::S7) | (1 << art::arm::S8) | 1285 (1 << art::arm::S9) | (1 << art::arm::S10) | (1 << art::arm::S11) | 1286 (1 << art::arm::S12) | (1 << art::arm::S13) | (1 << art::arm::S14) | 1287 (1 << art::arm::S15) | (1 << art::arm::S16) | (1 << art::arm::S17) | 1288 (1 << art::arm::S18) | (1 << art::arm::S19) | (1 << art::arm::S20) | 1289 (1 << art::arm::S21) | (1 << art::arm::S22) | (1 << art::arm::S23) | 1290 (1 << art::arm::S24) | (1 << art::arm::S25) | (1 << art::arm::S26) | 1291 (1 << art::arm::S27) | (1 << art::arm::S28) | (1 << art::arm::S29) | 1292 (1 << art::arm::S30) | (1 << art::arm::S31); 1293 uint32_t fp_spills = type == kSaveAll ? fp_all_spills : 0; 1294 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ + 1295 __builtin_popcount(fp_spills) /* fprs */ + 1296 1 /* Method* */) * kPointerSize, kStackAlignment); 1297 method->SetFrameSizeInBytes(frame_size); 1298 method->SetCoreSpillMask(core_spills); 1299 method->SetFpSpillMask(fp_spills); 1300 } else if (instruction_set == kMips) { 1301 uint32_t ref_spills = (1 << art::mips::S2) | (1 << art::mips::S3) | (1 << art::mips::S4) | 1302 (1 << art::mips::S5) | (1 << art::mips::S6) | (1 << art::mips::S7) | 1303 (1 << art::mips::GP) | (1 << art::mips::FP); 1304 uint32_t arg_spills = (1 << art::mips::A1) | (1 << art::mips::A2) | (1 << art::mips::A3); 1305 uint32_t all_spills = (1 << art::mips::S0) | (1 << art::mips::S1); 1306 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) | 1307 (type == kSaveAll ? all_spills : 0) | (1 << art::mips::RA); 1308 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ + 1309 (type == kRefsAndArgs ? 0 : 3) + 1 /* Method* */) * 1310 kPointerSize, kStackAlignment); 1311 method->SetFrameSizeInBytes(frame_size); 1312 method->SetCoreSpillMask(core_spills); 1313 method->SetFpSpillMask(0); 1314 } else if (instruction_set == kX86) { 1315 uint32_t ref_spills = (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI); 1316 uint32_t arg_spills = (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX); 1317 uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) | 1318 (1 << art::x86::kNumberOfCpuRegisters); // fake return address callee save 1319 size_t frame_size = RoundUp((__builtin_popcount(core_spills) /* gprs */ + 1320 1 /* Method* */) * kPointerSize, kStackAlignment); 1321 method->SetFrameSizeInBytes(frame_size); 1322 method->SetCoreSpillMask(core_spills); 1323 method->SetFpSpillMask(0); 1324 } else { 1325 UNIMPLEMENTED(FATAL); 1326 } 1327 return method.get(); 1328} 1329 1330void Runtime::DisallowNewSystemWeaks() { 1331 monitor_list_->DisallowNewMonitors(); 1332 intern_table_->DisallowNewInterns(); 1333 java_vm_->DisallowNewWeakGlobals(); 1334} 1335 1336void Runtime::AllowNewSystemWeaks() { 1337 monitor_list_->AllowNewMonitors(); 1338 intern_table_->AllowNewInterns(); 1339 java_vm_->AllowNewWeakGlobals(); 1340} 1341 1342void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) { 1343 DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType)); 1344 callee_save_methods_[type] = method; 1345} 1346 1347const std::vector<const DexFile*>& Runtime::GetCompileTimeClassPath(jobject class_loader) { 1348 if (class_loader == NULL) { 1349 return GetClassLinker()->GetBootClassPath(); 1350 } 1351 CHECK(UseCompileTimeClassPath()); 1352 CompileTimeClassPaths::const_iterator it = compile_time_class_paths_.find(class_loader); 1353 CHECK(it != compile_time_class_paths_.end()); 1354 return it->second; 1355} 1356 1357void Runtime::SetCompileTimeClassPath(jobject class_loader, std::vector<const DexFile*>& class_path) { 1358 CHECK(!IsStarted()); 1359 use_compile_time_class_path_ = true; 1360 compile_time_class_paths_.Put(class_loader, class_path); 1361} 1362 1363} // namespace art 1364