Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 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 "compiler_driver.h" |
| 18 | |
Anwar Ghuloum | 67f9941 | 2013-08-12 14:19:48 -0700 | [diff] [blame] | 19 | #define ATRACE_TAG ATRACE_TAG_DALVIK |
| 20 | #include <utils/Trace.h> |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 21 | |
Anwar Ghuloum | 67f9941 | 2013-08-12 14:19:48 -0700 | [diff] [blame] | 22 | #include <vector> |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 23 | #include <unistd.h> |
| 24 | |
| 25 | #include "base/stl_util.h" |
| 26 | #include "base/timing_logger.h" |
| 27 | #include "class_linker.h" |
Nicolas Geoffray | b34f69a | 2014-03-07 15:28:39 +0000 | [diff] [blame] | 28 | #include "compiler.h" |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 29 | #include "compiler_driver-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 30 | #include "dex_compilation_unit.h" |
| 31 | #include "dex_file-inl.h" |
Vladimir Marko | c7f8320 | 2014-01-24 17:55:18 +0000 | [diff] [blame] | 32 | #include "dex/verification_results.h" |
Vladimir Marko | 2730db0 | 2014-01-27 11:15:17 +0000 | [diff] [blame] | 33 | #include "dex/verified_method.h" |
Vladimir Marko | 2bc4780 | 2014-02-10 09:43:07 +0000 | [diff] [blame] | 34 | #include "dex/quick/dex_file_method_inliner.h" |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 35 | #include "driver/compiler_options.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 36 | #include "jni_internal.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 37 | #include "object_utils.h" |
| 38 | #include "runtime.h" |
| 39 | #include "gc/accounting/card_table-inl.h" |
| 40 | #include "gc/accounting/heap_bitmap.h" |
| 41 | #include "gc/space/space.h" |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 42 | #include "mirror/art_field-inl.h" |
| 43 | #include "mirror/art_method-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 44 | #include "mirror/class_loader.h" |
| 45 | #include "mirror/class-inl.h" |
| 46 | #include "mirror/dex_cache-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 47 | #include "mirror/object-inl.h" |
| 48 | #include "mirror/object_array-inl.h" |
| 49 | #include "mirror/throwable.h" |
| 50 | #include "scoped_thread_state_change.h" |
| 51 | #include "ScopedLocalRef.h" |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 52 | #include "handle_scope-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 53 | #include "thread.h" |
| 54 | #include "thread_pool.h" |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 55 | #include "trampolines/trampoline_compiler.h" |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 56 | #include "transaction.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 57 | #include "verifier/method_verifier.h" |
Vladimir Marko | 2bc4780 | 2014-02-10 09:43:07 +0000 | [diff] [blame] | 58 | #include "verifier/method_verifier-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 59 | |
Calin Juravle | 04ff226 | 2014-04-02 19:08:47 +0100 | [diff] [blame] | 60 | #ifdef HAVE_ANDROID_OS |
| 61 | #include "cutils/properties.h" |
| 62 | #endif |
| 63 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 64 | namespace art { |
| 65 | |
| 66 | static double Percentage(size_t x, size_t y) { |
| 67 | return 100.0 * (static_cast<double>(x)) / (static_cast<double>(x + y)); |
| 68 | } |
| 69 | |
| 70 | static void DumpStat(size_t x, size_t y, const char* str) { |
| 71 | if (x == 0 && y == 0) { |
| 72 | return; |
| 73 | } |
Ian Rogers | e732ef1 | 2013-10-09 15:22:24 -0700 | [diff] [blame] | 74 | LOG(INFO) << Percentage(x, y) << "% of " << str << " for " << (x + y) << " cases"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 75 | } |
| 76 | |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 77 | class CompilerDriver::AOTCompilationStats { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 78 | public: |
| 79 | AOTCompilationStats() |
| 80 | : stats_lock_("AOT compilation statistics lock"), |
| 81 | types_in_dex_cache_(0), types_not_in_dex_cache_(0), |
| 82 | strings_in_dex_cache_(0), strings_not_in_dex_cache_(0), |
| 83 | resolved_types_(0), unresolved_types_(0), |
| 84 | resolved_instance_fields_(0), unresolved_instance_fields_(0), |
| 85 | resolved_local_static_fields_(0), resolved_static_fields_(0), unresolved_static_fields_(0), |
| 86 | type_based_devirtualization_(0), |
| 87 | safe_casts_(0), not_safe_casts_(0) { |
| 88 | for (size_t i = 0; i <= kMaxInvokeType; i++) { |
| 89 | resolved_methods_[i] = 0; |
| 90 | unresolved_methods_[i] = 0; |
| 91 | virtual_made_direct_[i] = 0; |
| 92 | direct_calls_to_boot_[i] = 0; |
| 93 | direct_methods_to_boot_[i] = 0; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | void Dump() { |
| 98 | DumpStat(types_in_dex_cache_, types_not_in_dex_cache_, "types known to be in dex cache"); |
| 99 | DumpStat(strings_in_dex_cache_, strings_not_in_dex_cache_, "strings known to be in dex cache"); |
| 100 | DumpStat(resolved_types_, unresolved_types_, "types resolved"); |
| 101 | DumpStat(resolved_instance_fields_, unresolved_instance_fields_, "instance fields resolved"); |
| 102 | DumpStat(resolved_local_static_fields_ + resolved_static_fields_, unresolved_static_fields_, |
| 103 | "static fields resolved"); |
| 104 | DumpStat(resolved_local_static_fields_, resolved_static_fields_ + unresolved_static_fields_, |
| 105 | "static fields local to a class"); |
| 106 | DumpStat(safe_casts_, not_safe_casts_, "check-casts removed based on type information"); |
| 107 | // Note, the code below subtracts the stat value so that when added to the stat value we have |
| 108 | // 100% of samples. TODO: clean this up. |
| 109 | DumpStat(type_based_devirtualization_, |
| 110 | resolved_methods_[kVirtual] + unresolved_methods_[kVirtual] + |
| 111 | resolved_methods_[kInterface] + unresolved_methods_[kInterface] - |
| 112 | type_based_devirtualization_, |
| 113 | "virtual/interface calls made direct based on type information"); |
| 114 | |
| 115 | for (size_t i = 0; i <= kMaxInvokeType; i++) { |
| 116 | std::ostringstream oss; |
| 117 | oss << static_cast<InvokeType>(i) << " methods were AOT resolved"; |
| 118 | DumpStat(resolved_methods_[i], unresolved_methods_[i], oss.str().c_str()); |
| 119 | if (virtual_made_direct_[i] > 0) { |
| 120 | std::ostringstream oss2; |
| 121 | oss2 << static_cast<InvokeType>(i) << " methods made direct"; |
| 122 | DumpStat(virtual_made_direct_[i], |
| 123 | resolved_methods_[i] + unresolved_methods_[i] - virtual_made_direct_[i], |
| 124 | oss2.str().c_str()); |
| 125 | } |
| 126 | if (direct_calls_to_boot_[i] > 0) { |
| 127 | std::ostringstream oss2; |
| 128 | oss2 << static_cast<InvokeType>(i) << " method calls are direct into boot"; |
| 129 | DumpStat(direct_calls_to_boot_[i], |
| 130 | resolved_methods_[i] + unresolved_methods_[i] - direct_calls_to_boot_[i], |
| 131 | oss2.str().c_str()); |
| 132 | } |
| 133 | if (direct_methods_to_boot_[i] > 0) { |
| 134 | std::ostringstream oss2; |
| 135 | oss2 << static_cast<InvokeType>(i) << " method calls have methods in boot"; |
| 136 | DumpStat(direct_methods_to_boot_[i], |
| 137 | resolved_methods_[i] + unresolved_methods_[i] - direct_methods_to_boot_[i], |
| 138 | oss2.str().c_str()); |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | // Allow lossy statistics in non-debug builds. |
| 144 | #ifndef NDEBUG |
| 145 | #define STATS_LOCK() MutexLock mu(Thread::Current(), stats_lock_) |
| 146 | #else |
| 147 | #define STATS_LOCK() |
| 148 | #endif |
| 149 | |
| 150 | void TypeInDexCache() { |
| 151 | STATS_LOCK(); |
| 152 | types_in_dex_cache_++; |
| 153 | } |
| 154 | |
| 155 | void TypeNotInDexCache() { |
| 156 | STATS_LOCK(); |
| 157 | types_not_in_dex_cache_++; |
| 158 | } |
| 159 | |
| 160 | void StringInDexCache() { |
| 161 | STATS_LOCK(); |
| 162 | strings_in_dex_cache_++; |
| 163 | } |
| 164 | |
| 165 | void StringNotInDexCache() { |
| 166 | STATS_LOCK(); |
| 167 | strings_not_in_dex_cache_++; |
| 168 | } |
| 169 | |
| 170 | void TypeDoesntNeedAccessCheck() { |
| 171 | STATS_LOCK(); |
| 172 | resolved_types_++; |
| 173 | } |
| 174 | |
| 175 | void TypeNeedsAccessCheck() { |
| 176 | STATS_LOCK(); |
| 177 | unresolved_types_++; |
| 178 | } |
| 179 | |
| 180 | void ResolvedInstanceField() { |
| 181 | STATS_LOCK(); |
| 182 | resolved_instance_fields_++; |
| 183 | } |
| 184 | |
| 185 | void UnresolvedInstanceField() { |
| 186 | STATS_LOCK(); |
| 187 | unresolved_instance_fields_++; |
| 188 | } |
| 189 | |
| 190 | void ResolvedLocalStaticField() { |
| 191 | STATS_LOCK(); |
| 192 | resolved_local_static_fields_++; |
| 193 | } |
| 194 | |
| 195 | void ResolvedStaticField() { |
| 196 | STATS_LOCK(); |
| 197 | resolved_static_fields_++; |
| 198 | } |
| 199 | |
| 200 | void UnresolvedStaticField() { |
| 201 | STATS_LOCK(); |
| 202 | unresolved_static_fields_++; |
| 203 | } |
| 204 | |
| 205 | // Indicate that type information from the verifier led to devirtualization. |
| 206 | void PreciseTypeDevirtualization() { |
| 207 | STATS_LOCK(); |
| 208 | type_based_devirtualization_++; |
| 209 | } |
| 210 | |
| 211 | // Indicate that a method of the given type was resolved at compile time. |
| 212 | void ResolvedMethod(InvokeType type) { |
| 213 | DCHECK_LE(type, kMaxInvokeType); |
| 214 | STATS_LOCK(); |
| 215 | resolved_methods_[type]++; |
| 216 | } |
| 217 | |
| 218 | // Indicate that a method of the given type was unresolved at compile time as it was in an |
| 219 | // unknown dex file. |
| 220 | void UnresolvedMethod(InvokeType type) { |
| 221 | DCHECK_LE(type, kMaxInvokeType); |
| 222 | STATS_LOCK(); |
| 223 | unresolved_methods_[type]++; |
| 224 | } |
| 225 | |
| 226 | // Indicate that a type of virtual method dispatch has been converted into a direct method |
| 227 | // dispatch. |
| 228 | void VirtualMadeDirect(InvokeType type) { |
| 229 | DCHECK(type == kVirtual || type == kInterface || type == kSuper); |
| 230 | STATS_LOCK(); |
| 231 | virtual_made_direct_[type]++; |
| 232 | } |
| 233 | |
| 234 | // Indicate that a method of the given type was able to call directly into boot. |
| 235 | void DirectCallsToBoot(InvokeType type) { |
| 236 | DCHECK_LE(type, kMaxInvokeType); |
| 237 | STATS_LOCK(); |
| 238 | direct_calls_to_boot_[type]++; |
| 239 | } |
| 240 | |
| 241 | // Indicate that a method of the given type was able to be resolved directly from boot. |
| 242 | void DirectMethodsToBoot(InvokeType type) { |
| 243 | DCHECK_LE(type, kMaxInvokeType); |
| 244 | STATS_LOCK(); |
| 245 | direct_methods_to_boot_[type]++; |
| 246 | } |
| 247 | |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 248 | void ProcessedInvoke(InvokeType type, int flags) { |
| 249 | STATS_LOCK(); |
| 250 | if (flags == 0) { |
| 251 | unresolved_methods_[type]++; |
| 252 | } else { |
| 253 | DCHECK_NE((flags & kFlagMethodResolved), 0); |
| 254 | resolved_methods_[type]++; |
| 255 | if ((flags & kFlagVirtualMadeDirect) != 0) { |
| 256 | virtual_made_direct_[type]++; |
| 257 | if ((flags & kFlagPreciseTypeDevirtualization) != 0) { |
| 258 | type_based_devirtualization_++; |
| 259 | } |
| 260 | } else { |
| 261 | DCHECK_EQ((flags & kFlagPreciseTypeDevirtualization), 0); |
| 262 | } |
| 263 | if ((flags & kFlagDirectCallToBoot) != 0) { |
| 264 | direct_calls_to_boot_[type]++; |
| 265 | } |
| 266 | if ((flags & kFlagDirectMethodToBoot) != 0) { |
| 267 | direct_methods_to_boot_[type]++; |
| 268 | } |
| 269 | } |
| 270 | } |
| 271 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 272 | // A check-cast could be eliminated due to verifier type analysis. |
| 273 | void SafeCast() { |
| 274 | STATS_LOCK(); |
| 275 | safe_casts_++; |
| 276 | } |
| 277 | |
| 278 | // A check-cast couldn't be eliminated due to verifier type analysis. |
| 279 | void NotASafeCast() { |
| 280 | STATS_LOCK(); |
| 281 | not_safe_casts_++; |
| 282 | } |
| 283 | |
| 284 | private: |
| 285 | Mutex stats_lock_; |
| 286 | |
| 287 | size_t types_in_dex_cache_; |
| 288 | size_t types_not_in_dex_cache_; |
| 289 | |
| 290 | size_t strings_in_dex_cache_; |
| 291 | size_t strings_not_in_dex_cache_; |
| 292 | |
| 293 | size_t resolved_types_; |
| 294 | size_t unresolved_types_; |
| 295 | |
| 296 | size_t resolved_instance_fields_; |
| 297 | size_t unresolved_instance_fields_; |
| 298 | |
| 299 | size_t resolved_local_static_fields_; |
| 300 | size_t resolved_static_fields_; |
| 301 | size_t unresolved_static_fields_; |
| 302 | // Type based devirtualization for invoke interface and virtual. |
| 303 | size_t type_based_devirtualization_; |
| 304 | |
| 305 | size_t resolved_methods_[kMaxInvokeType + 1]; |
| 306 | size_t unresolved_methods_[kMaxInvokeType + 1]; |
| 307 | size_t virtual_made_direct_[kMaxInvokeType + 1]; |
| 308 | size_t direct_calls_to_boot_[kMaxInvokeType + 1]; |
| 309 | size_t direct_methods_to_boot_[kMaxInvokeType + 1]; |
| 310 | |
| 311 | size_t safe_casts_; |
| 312 | size_t not_safe_casts_; |
| 313 | |
| 314 | DISALLOW_COPY_AND_ASSIGN(AOTCompilationStats); |
| 315 | }; |
| 316 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 317 | |
| 318 | extern "C" art::CompiledMethod* ArtCompileDEX(art::CompilerDriver& compiler, |
| 319 | const art::DexFile::CodeItem* code_item, |
| 320 | uint32_t access_flags, |
| 321 | art::InvokeType invoke_type, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 322 | uint16_t class_def_idx, |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 323 | uint32_t method_idx, |
| 324 | jobject class_loader, |
| 325 | const art::DexFile& dex_file); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 326 | |
Brian Carlstrom | 6449c62 | 2014-02-10 23:48:36 -0800 | [diff] [blame] | 327 | CompilerDriver::CompilerDriver(const CompilerOptions* compiler_options, |
| 328 | VerificationResults* verification_results, |
Vladimir Marko | 5816ed4 | 2013-11-27 17:04:20 +0000 | [diff] [blame] | 329 | DexFileToMethodInlinerMap* method_inliner_map, |
Nicolas Geoffray | b34f69a | 2014-03-07 15:28:39 +0000 | [diff] [blame] | 330 | Compiler::Kind compiler_kind, |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 331 | InstructionSet instruction_set, |
Dave Allison | 7020278 | 2013-10-22 17:52:19 -0700 | [diff] [blame] | 332 | InstructionSetFeatures instruction_set_features, |
buzbee | a024a06 | 2013-07-31 10:47:37 -0700 | [diff] [blame] | 333 | bool image, DescriptorSet* image_classes, size_t thread_count, |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 334 | bool dump_stats, bool dump_passes, CumulativeLogger* timer, |
| 335 | std::string profile_file) |
| 336 | : profile_ok_(false), compiler_options_(compiler_options), |
Brian Carlstrom | 6449c62 | 2014-02-10 23:48:36 -0800 | [diff] [blame] | 337 | verification_results_(verification_results), |
Vladimir Marko | 5816ed4 | 2013-11-27 17:04:20 +0000 | [diff] [blame] | 338 | method_inliner_map_(method_inliner_map), |
Ian Rogers | 72d3262 | 2014-05-06 16:20:11 -0700 | [diff] [blame] | 339 | compiler_(Compiler::Create(this, compiler_kind)), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 340 | instruction_set_(instruction_set), |
Dave Allison | 7020278 | 2013-10-22 17:52:19 -0700 | [diff] [blame] | 341 | instruction_set_features_(instruction_set_features), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 342 | freezing_constructor_lock_("freezing constructor lock"), |
| 343 | compiled_classes_lock_("compiled classes lock"), |
| 344 | compiled_methods_lock_("compiled method lock"), |
| 345 | image_(image), |
| 346 | image_classes_(image_classes), |
| 347 | thread_count_(thread_count), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 348 | start_ns_(0), |
| 349 | stats_(new AOTCompilationStats), |
| 350 | dump_stats_(dump_stats), |
Nicolas Geoffray | ea3fa0b | 2014-02-10 11:59:41 +0000 | [diff] [blame] | 351 | dump_passes_(dump_passes), |
| 352 | timings_logger_(timer), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 353 | compiler_library_(NULL), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 354 | compiler_context_(NULL), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 355 | compiler_enable_auto_elf_loading_(NULL), |
| 356 | compiler_get_method_code_addr_(NULL), |
Mark Mendell | 55d0eac | 2014-02-06 11:02:52 -0800 | [diff] [blame] | 357 | support_boot_image_fixup_(instruction_set != kMips), |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 358 | cfi_info_(nullptr), |
Ian Rogers | d133b97 | 2013-09-05 11:01:30 -0700 | [diff] [blame] | 359 | dedupe_code_("dedupe code"), |
| 360 | dedupe_mapping_table_("dedupe mapping table"), |
| 361 | dedupe_vmap_table_("dedupe vmap table"), |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 362 | dedupe_gc_map_("dedupe gc map"), |
| 363 | dedupe_cfi_info_("dedupe cfi info") { |
Brian Carlstrom | 6449c62 | 2014-02-10 23:48:36 -0800 | [diff] [blame] | 364 | DCHECK(compiler_options_ != nullptr); |
| 365 | DCHECK(verification_results_ != nullptr); |
| 366 | DCHECK(method_inliner_map_ != nullptr); |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 367 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 368 | CHECK_PTHREAD_CALL(pthread_key_create, (&tls_key_, NULL), "compiler tls key"); |
| 369 | |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 370 | // Read the profile file if one is provided. |
| 371 | if (profile_file != "") { |
Calin Juravle | 9dae5b4 | 2014-04-07 16:36:21 +0300 | [diff] [blame] | 372 | profile_ok_ = ProfileHelper::LoadProfileMap(profile_map_, profile_file); |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 373 | } |
| 374 | |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 375 | dex_to_dex_compiler_ = reinterpret_cast<DexToDexCompilerFn>(ArtCompileDEX); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 376 | |
Ian Rogers | 72d3262 | 2014-05-06 16:20:11 -0700 | [diff] [blame] | 377 | compiler_->Init(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 378 | |
| 379 | CHECK(!Runtime::Current()->IsStarted()); |
Kenny Root | d518534 | 2014-05-13 14:47:05 -0700 | [diff] [blame] | 380 | if (image_) { |
| 381 | CHECK(image_classes_.get() != nullptr); |
| 382 | } else { |
| 383 | CHECK(image_classes_.get() == nullptr); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 384 | } |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 385 | |
| 386 | // Are we generating CFI information? |
| 387 | if (compiler_options->GetGenerateGDBInformation()) { |
Nicolas Geoffray | b34f69a | 2014-03-07 15:28:39 +0000 | [diff] [blame] | 388 | cfi_info_.reset(compiler_->GetCallFrameInformationInitialization(*this)); |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 389 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 390 | } |
| 391 | |
Mathieu Chartier | 193bad9 | 2013-08-29 18:46:00 -0700 | [diff] [blame] | 392 | std::vector<uint8_t>* CompilerDriver::DeduplicateCode(const std::vector<uint8_t>& code) { |
| 393 | return dedupe_code_.Add(Thread::Current(), code); |
| 394 | } |
| 395 | |
| 396 | std::vector<uint8_t>* CompilerDriver::DeduplicateMappingTable(const std::vector<uint8_t>& code) { |
| 397 | return dedupe_mapping_table_.Add(Thread::Current(), code); |
| 398 | } |
| 399 | |
| 400 | std::vector<uint8_t>* CompilerDriver::DeduplicateVMapTable(const std::vector<uint8_t>& code) { |
| 401 | return dedupe_vmap_table_.Add(Thread::Current(), code); |
| 402 | } |
| 403 | |
| 404 | std::vector<uint8_t>* CompilerDriver::DeduplicateGCMap(const std::vector<uint8_t>& code) { |
| 405 | return dedupe_gc_map_.Add(Thread::Current(), code); |
| 406 | } |
| 407 | |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 408 | std::vector<uint8_t>* CompilerDriver::DeduplicateCFIInfo(const std::vector<uint8_t>* cfi_info) { |
| 409 | if (cfi_info == nullptr) { |
| 410 | return nullptr; |
| 411 | } |
| 412 | return dedupe_cfi_info_.Add(Thread::Current(), *cfi_info); |
| 413 | } |
| 414 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 415 | CompilerDriver::~CompilerDriver() { |
| 416 | Thread* self = Thread::Current(); |
| 417 | { |
| 418 | MutexLock mu(self, compiled_classes_lock_); |
| 419 | STLDeleteValues(&compiled_classes_); |
| 420 | } |
| 421 | { |
| 422 | MutexLock mu(self, compiled_methods_lock_); |
| 423 | STLDeleteValues(&compiled_methods_); |
| 424 | } |
| 425 | { |
| 426 | MutexLock mu(self, compiled_methods_lock_); |
| 427 | STLDeleteElements(&code_to_patch_); |
| 428 | } |
| 429 | { |
| 430 | MutexLock mu(self, compiled_methods_lock_); |
| 431 | STLDeleteElements(&methods_to_patch_); |
| 432 | } |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 433 | { |
| 434 | MutexLock mu(self, compiled_methods_lock_); |
| 435 | STLDeleteElements(&classes_to_patch_); |
| 436 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 437 | CHECK_PTHREAD_CALL(pthread_key_delete, (tls_key_), "delete tls key"); |
Ian Rogers | 72d3262 | 2014-05-06 16:20:11 -0700 | [diff] [blame] | 438 | compiler_->UnInit(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 439 | } |
| 440 | |
| 441 | CompilerTls* CompilerDriver::GetTls() { |
| 442 | // Lazily create thread-local storage |
| 443 | CompilerTls* res = static_cast<CompilerTls*>(pthread_getspecific(tls_key_)); |
| 444 | if (res == NULL) { |
| 445 | res = new CompilerTls(); |
| 446 | CHECK_PTHREAD_CALL(pthread_setspecific, (tls_key_, res), "compiler tls"); |
| 447 | } |
| 448 | return res; |
| 449 | } |
| 450 | |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 451 | #define CREATE_TRAMPOLINE(type, abi, offset) \ |
Andreas Gampe | af13ad9 | 2014-04-11 12:07:48 -0700 | [diff] [blame] | 452 | if (Is64BitInstructionSet(instruction_set_)) { \ |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 453 | return CreateTrampoline64(instruction_set_, abi, \ |
| 454 | type ## _ENTRYPOINT_OFFSET(8, offset)); \ |
| 455 | } else { \ |
| 456 | return CreateTrampoline32(instruction_set_, abi, \ |
| 457 | type ## _ENTRYPOINT_OFFSET(4, offset)); \ |
| 458 | } |
| 459 | |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 460 | const std::vector<uint8_t>* CompilerDriver::CreateInterpreterToInterpreterBridge() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 461 | CREATE_TRAMPOLINE(INTERPRETER, kInterpreterAbi, pInterpreterToInterpreterBridge) |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 462 | } |
| 463 | |
| 464 | const std::vector<uint8_t>* CompilerDriver::CreateInterpreterToCompiledCodeBridge() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 465 | CREATE_TRAMPOLINE(INTERPRETER, kInterpreterAbi, pInterpreterToCompiledCodeBridge) |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | const std::vector<uint8_t>* CompilerDriver::CreateJniDlsymLookup() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 469 | CREATE_TRAMPOLINE(JNI, kJniAbi, pDlsymLookup) |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 470 | } |
| 471 | |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 472 | const std::vector<uint8_t>* CompilerDriver::CreatePortableImtConflictTrampoline() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 473 | CREATE_TRAMPOLINE(PORTABLE, kPortableAbi, pPortableImtConflictTrampoline) |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 474 | } |
| 475 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 476 | const std::vector<uint8_t>* CompilerDriver::CreatePortableResolutionTrampoline() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 477 | CREATE_TRAMPOLINE(PORTABLE, kPortableAbi, pPortableResolutionTrampoline) |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 478 | } |
| 479 | |
| 480 | const std::vector<uint8_t>* CompilerDriver::CreatePortableToInterpreterBridge() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 481 | CREATE_TRAMPOLINE(PORTABLE, kPortableAbi, pPortableToInterpreterBridge) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 482 | } |
| 483 | |
Andreas Gampe | 2da8823 | 2014-02-27 12:26:20 -0800 | [diff] [blame] | 484 | const std::vector<uint8_t>* CompilerDriver::CreateQuickGenericJniTrampoline() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 485 | CREATE_TRAMPOLINE(QUICK, kQuickAbi, pQuickGenericJniTrampoline) |
Andreas Gampe | 2da8823 | 2014-02-27 12:26:20 -0800 | [diff] [blame] | 486 | } |
| 487 | |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 488 | const std::vector<uint8_t>* CompilerDriver::CreateQuickImtConflictTrampoline() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 489 | CREATE_TRAMPOLINE(QUICK, kQuickAbi, pQuickImtConflictTrampoline) |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 490 | } |
| 491 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 492 | const std::vector<uint8_t>* CompilerDriver::CreateQuickResolutionTrampoline() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 493 | CREATE_TRAMPOLINE(QUICK, kQuickAbi, pQuickResolutionTrampoline) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 494 | } |
| 495 | |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 496 | const std::vector<uint8_t>* CompilerDriver::CreateQuickToInterpreterBridge() const { |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 497 | CREATE_TRAMPOLINE(QUICK, kQuickAbi, pQuickToInterpreterBridge) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 498 | } |
Ian Rogers | dd7624d | 2014-03-14 17:43:00 -0700 | [diff] [blame] | 499 | #undef CREATE_TRAMPOLINE |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 500 | |
| 501 | void CompilerDriver::CompileAll(jobject class_loader, |
Brian Carlstrom | 4560248 | 2013-07-21 22:07:55 -0700 | [diff] [blame] | 502 | const std::vector<const DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 503 | TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 504 | DCHECK(!Runtime::Current()->IsStarted()); |
Mathieu Chartier | bcd5e9d | 2013-11-13 14:33:28 -0800 | [diff] [blame] | 505 | UniquePtr<ThreadPool> thread_pool(new ThreadPool("Compiler driver thread pool", thread_count_ - 1)); |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 506 | PreCompile(class_loader, dex_files, thread_pool.get(), timings); |
| 507 | Compile(class_loader, dex_files, thread_pool.get(), timings); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 508 | if (dump_stats_) { |
| 509 | stats_->Dump(); |
| 510 | } |
| 511 | } |
| 512 | |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 513 | static DexToDexCompilationLevel GetDexToDexCompilationlevel( |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 514 | Thread* self, Handle<mirror::ClassLoader>& class_loader, const DexFile& dex_file, |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 515 | const DexFile::ClassDef& class_def) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 516 | const char* descriptor = dex_file.GetClassDescriptor(class_def); |
| 517 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 518 | mirror::Class* klass = class_linker->FindClass(self, descriptor, class_loader); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 519 | if (klass == NULL) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 520 | CHECK(self->IsExceptionPending()); |
| 521 | self->ClearException(); |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 522 | return kDontDexToDexCompile; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 523 | } |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 524 | // The verifier can only run on "quick" instructions at runtime (see usage of |
| 525 | // FindAccessedFieldAtDexPc and FindInvokedMethodAtDexPc in ThrowNullPointerExceptionFromDexPC |
| 526 | // function). Since image classes can be verified again while compiling an application, |
| 527 | // we must prevent the DEX-to-DEX compiler from introducing them. |
| 528 | // TODO: find a way to enable "quick" instructions for image classes and remove this check. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 529 | bool compiling_image_classes = class_loader.Get() == nullptr; |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 530 | if (compiling_image_classes) { |
| 531 | return kRequired; |
| 532 | } else if (klass->IsVerified()) { |
| 533 | // Class is verified so we can enable DEX-to-DEX compilation for performance. |
| 534 | return kOptimize; |
| 535 | } else if (klass->IsCompileTimeVerified()) { |
| 536 | // Class verification has soft-failed. Anyway, ensure at least correctness. |
| 537 | DCHECK_EQ(klass->GetStatus(), mirror::Class::kStatusRetryVerificationAtRuntime); |
| 538 | return kRequired; |
| 539 | } else { |
| 540 | // Class verification has failed: do not run DEX-to-DEX compilation. |
| 541 | return kDontDexToDexCompile; |
| 542 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 543 | } |
| 544 | |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 545 | void CompilerDriver::CompileOne(mirror::ArtMethod* method, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 546 | DCHECK(!Runtime::Current()->IsStarted()); |
| 547 | Thread* self = Thread::Current(); |
| 548 | jobject jclass_loader; |
| 549 | const DexFile* dex_file; |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 550 | uint16_t class_def_idx; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 551 | uint32_t method_idx = method->GetDexMethodIndex(); |
| 552 | uint32_t access_flags = method->GetAccessFlags(); |
| 553 | InvokeType invoke_type = method->GetInvokeType(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 554 | { |
| 555 | ScopedObjectAccessUnchecked soa(self); |
| 556 | ScopedLocalRef<jobject> |
| 557 | local_class_loader(soa.Env(), |
| 558 | soa.AddLocalReference<jobject>(method->GetDeclaringClass()->GetClassLoader())); |
| 559 | jclass_loader = soa.Env()->NewGlobalRef(local_class_loader.get()); |
| 560 | // Find the dex_file |
| 561 | MethodHelper mh(method); |
| 562 | dex_file = &mh.GetDexFile(); |
| 563 | class_def_idx = mh.GetClassDefIndex(); |
| 564 | } |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 565 | const DexFile::CodeItem* code_item = dex_file->GetCodeItem(method->GetCodeItemOffset()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 566 | self->TransitionFromRunnableToSuspended(kNative); |
| 567 | |
| 568 | std::vector<const DexFile*> dex_files; |
| 569 | dex_files.push_back(dex_file); |
| 570 | |
Mathieu Chartier | bcd5e9d | 2013-11-13 14:33:28 -0800 | [diff] [blame] | 571 | UniquePtr<ThreadPool> thread_pool(new ThreadPool("Compiler driver thread pool", 0U)); |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 572 | PreCompile(jclass_loader, dex_files, thread_pool.get(), timings); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 573 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 574 | // Can we run DEX-to-DEX compiler on this class ? |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 575 | DexToDexCompilationLevel dex_to_dex_compilation_level = kDontDexToDexCompile; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 576 | { |
| 577 | ScopedObjectAccess soa(Thread::Current()); |
| 578 | const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_idx); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 579 | StackHandleScope<1> hs(soa.Self()); |
| 580 | Handle<mirror::ClassLoader> class_loader( |
| 581 | hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader))); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 582 | dex_to_dex_compilation_level = GetDexToDexCompilationlevel(self, class_loader, *dex_file, |
| 583 | class_def); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 584 | } |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 585 | CompileMethod(code_item, access_flags, invoke_type, class_def_idx, method_idx, jclass_loader, |
| 586 | *dex_file, dex_to_dex_compilation_level); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 587 | |
| 588 | self->GetJniEnv()->DeleteGlobalRef(jclass_loader); |
| 589 | |
| 590 | self->TransitionFromSuspendedToRunnable(); |
| 591 | } |
| 592 | |
| 593 | void CompilerDriver::Resolve(jobject class_loader, const std::vector<const DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 594 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 595 | for (size_t i = 0; i != dex_files.size(); ++i) { |
| 596 | const DexFile* dex_file = dex_files[i]; |
Kenny Root | d518534 | 2014-05-13 14:47:05 -0700 | [diff] [blame] | 597 | CHECK(dex_file != nullptr); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 598 | ResolveDexFile(class_loader, *dex_file, thread_pool, timings); |
| 599 | } |
| 600 | } |
| 601 | |
| 602 | void CompilerDriver::PreCompile(jobject class_loader, const std::vector<const DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 603 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 604 | LoadImageClasses(timings); |
| 605 | |
Jeff Hao | 4a200f5 | 2014-04-01 14:58:49 -0700 | [diff] [blame] | 606 | if (!compiler_options_->IsVerificationEnabled()) { |
| 607 | VLOG(compiler) << "Verify none mode specified, skipping pre-compilation"; |
| 608 | return; |
| 609 | } |
| 610 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 611 | Resolve(class_loader, dex_files, thread_pool, timings); |
| 612 | |
| 613 | Verify(class_loader, dex_files, thread_pool, timings); |
| 614 | |
| 615 | InitializeClasses(class_loader, dex_files, thread_pool, timings); |
| 616 | |
| 617 | UpdateImageClasses(timings); |
| 618 | } |
| 619 | |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 620 | bool CompilerDriver::IsImageClass(const char* descriptor) const { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 621 | if (!IsImage()) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 622 | return true; |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 623 | } else { |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 624 | return image_classes_->find(descriptor) != image_classes_->end(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 625 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 626 | } |
| 627 | |
| 628 | static void ResolveExceptionsForMethod(MethodHelper* mh, |
| 629 | std::set<std::pair<uint16_t, const DexFile*> >& exceptions_to_resolve) |
| 630 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 631 | const DexFile::CodeItem* code_item = mh->GetCodeItem(); |
| 632 | if (code_item == NULL) { |
| 633 | return; // native or abstract method |
| 634 | } |
| 635 | if (code_item->tries_size_ == 0) { |
| 636 | return; // nothing to process |
| 637 | } |
| 638 | const byte* encoded_catch_handler_list = DexFile::GetCatchHandlerData(*code_item, 0); |
| 639 | size_t num_encoded_catch_handlers = DecodeUnsignedLeb128(&encoded_catch_handler_list); |
| 640 | for (size_t i = 0; i < num_encoded_catch_handlers; i++) { |
| 641 | int32_t encoded_catch_handler_size = DecodeSignedLeb128(&encoded_catch_handler_list); |
| 642 | bool has_catch_all = false; |
| 643 | if (encoded_catch_handler_size <= 0) { |
| 644 | encoded_catch_handler_size = -encoded_catch_handler_size; |
| 645 | has_catch_all = true; |
| 646 | } |
| 647 | for (int32_t j = 0; j < encoded_catch_handler_size; j++) { |
| 648 | uint16_t encoded_catch_handler_handlers_type_idx = |
| 649 | DecodeUnsignedLeb128(&encoded_catch_handler_list); |
| 650 | // Add to set of types to resolve if not already in the dex cache resolved types |
| 651 | if (!mh->IsResolvedTypeIdx(encoded_catch_handler_handlers_type_idx)) { |
| 652 | exceptions_to_resolve.insert( |
| 653 | std::pair<uint16_t, const DexFile*>(encoded_catch_handler_handlers_type_idx, |
| 654 | &mh->GetDexFile())); |
| 655 | } |
| 656 | // ignore address associated with catch handler |
| 657 | DecodeUnsignedLeb128(&encoded_catch_handler_list); |
| 658 | } |
| 659 | if (has_catch_all) { |
| 660 | // ignore catch all address |
| 661 | DecodeUnsignedLeb128(&encoded_catch_handler_list); |
| 662 | } |
| 663 | } |
| 664 | } |
| 665 | |
| 666 | static bool ResolveCatchBlockExceptionsClassVisitor(mirror::Class* c, void* arg) |
| 667 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 668 | std::set<std::pair<uint16_t, const DexFile*> >* exceptions_to_resolve = |
| 669 | reinterpret_cast<std::set<std::pair<uint16_t, const DexFile*> >*>(arg); |
| 670 | MethodHelper mh; |
| 671 | for (size_t i = 0; i < c->NumVirtualMethods(); ++i) { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 672 | mirror::ArtMethod* m = c->GetVirtualMethod(i); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 673 | mh.ChangeMethod(m); |
| 674 | ResolveExceptionsForMethod(&mh, *exceptions_to_resolve); |
| 675 | } |
| 676 | for (size_t i = 0; i < c->NumDirectMethods(); ++i) { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 677 | mirror::ArtMethod* m = c->GetDirectMethod(i); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 678 | mh.ChangeMethod(m); |
| 679 | ResolveExceptionsForMethod(&mh, *exceptions_to_resolve); |
| 680 | } |
| 681 | return true; |
| 682 | } |
| 683 | |
| 684 | static bool RecordImageClassesVisitor(mirror::Class* klass, void* arg) |
| 685 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 686 | CompilerDriver::DescriptorSet* image_classes = |
| 687 | reinterpret_cast<CompilerDriver::DescriptorSet*>(arg); |
| 688 | image_classes->insert(ClassHelper(klass).GetDescriptor()); |
| 689 | return true; |
| 690 | } |
| 691 | |
| 692 | // Make a list of descriptors for classes to include in the image |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 693 | void CompilerDriver::LoadImageClasses(TimingLogger* timings) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 694 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
Kenny Root | d518534 | 2014-05-13 14:47:05 -0700 | [diff] [blame] | 695 | CHECK(timings != nullptr); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 696 | if (!IsImage()) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 697 | return; |
| 698 | } |
| 699 | |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 700 | timings->NewSplit("LoadImageClasses"); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 701 | // Make a first class to load all classes explicitly listed in the file |
| 702 | Thread* self = Thread::Current(); |
| 703 | ScopedObjectAccess soa(self); |
| 704 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Kenny Root | d518534 | 2014-05-13 14:47:05 -0700 | [diff] [blame] | 705 | CHECK(image_classes_.get() != nullptr); |
Mathieu Chartier | 02e2511 | 2013-08-14 16:14:24 -0700 | [diff] [blame] | 706 | for (auto it = image_classes_->begin(), end = image_classes_->end(); it != end;) { |
Vladimir Marko | e9c36b3 | 2013-11-21 15:49:16 +0000 | [diff] [blame] | 707 | const std::string& descriptor(*it); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 708 | StackHandleScope<1> hs(self); |
| 709 | Handle<mirror::Class> klass( |
| 710 | hs.NewHandle(class_linker->FindSystemClass(self, descriptor.c_str()))); |
| 711 | if (klass.Get() == NULL) { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 712 | VLOG(compiler) << "Failed to find class " << descriptor; |
Vladimir Marko | e9c36b3 | 2013-11-21 15:49:16 +0000 | [diff] [blame] | 713 | image_classes_->erase(it++); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 714 | self->ClearException(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 715 | } else { |
| 716 | ++it; |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | // Resolve exception classes referenced by the loaded classes. The catch logic assumes |
| 721 | // exceptions are resolved by the verifier when there is a catch block in an interested method. |
| 722 | // Do this here so that exception classes appear to have been specified image classes. |
| 723 | std::set<std::pair<uint16_t, const DexFile*> > unresolved_exception_types; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 724 | StackHandleScope<1> hs(self); |
| 725 | Handle<mirror::Class> java_lang_Throwable( |
| 726 | hs.NewHandle(class_linker->FindSystemClass(self, "Ljava/lang/Throwable;"))); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 727 | do { |
| 728 | unresolved_exception_types.clear(); |
| 729 | class_linker->VisitClasses(ResolveCatchBlockExceptionsClassVisitor, |
| 730 | &unresolved_exception_types); |
Mathieu Chartier | 02e2511 | 2013-08-14 16:14:24 -0700 | [diff] [blame] | 731 | for (const std::pair<uint16_t, const DexFile*>& exception_type : unresolved_exception_types) { |
| 732 | uint16_t exception_type_idx = exception_type.first; |
| 733 | const DexFile* dex_file = exception_type.second; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 734 | StackHandleScope<3> hs(self); |
| 735 | Handle<mirror::DexCache> dex_cache(hs.NewHandle(class_linker->FindDexCache(*dex_file))); |
| 736 | auto class_loader(hs.NewHandle<mirror::ClassLoader>(nullptr)); |
| 737 | Handle<mirror::Class> klass(hs.NewHandle( |
| 738 | class_linker->ResolveType(*dex_file, exception_type_idx, dex_cache, class_loader))); |
| 739 | if (klass.Get() == NULL) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 740 | const DexFile::TypeId& type_id = dex_file->GetTypeId(exception_type_idx); |
| 741 | const char* descriptor = dex_file->GetTypeDescriptor(type_id); |
| 742 | LOG(FATAL) << "Failed to resolve class " << descriptor; |
| 743 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 744 | DCHECK(java_lang_Throwable->IsAssignableFrom(klass.Get())); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 745 | } |
| 746 | // Resolving exceptions may load classes that reference more exceptions, iterate until no |
| 747 | // more are found |
| 748 | } while (!unresolved_exception_types.empty()); |
| 749 | |
| 750 | // We walk the roots looking for classes so that we'll pick up the |
| 751 | // above classes plus any classes them depend on such super |
| 752 | // classes, interfaces, and the required ClassLinker roots. |
| 753 | class_linker->VisitClasses(RecordImageClassesVisitor, image_classes_.get()); |
| 754 | |
| 755 | CHECK_NE(image_classes_->size(), 0U); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 756 | } |
| 757 | |
| 758 | static void MaybeAddToImageClasses(mirror::Class* klass, CompilerDriver::DescriptorSet* image_classes) |
| 759 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 760 | while (!klass->IsObjectClass()) { |
| 761 | ClassHelper kh(klass); |
| 762 | const char* descriptor = kh.GetDescriptor(); |
| 763 | std::pair<CompilerDriver::DescriptorSet::iterator, bool> result = |
| 764 | image_classes->insert(descriptor); |
| 765 | if (result.second) { |
Anwar Ghuloum | 75a43f1 | 2013-08-13 17:22:14 -0700 | [diff] [blame] | 766 | VLOG(compiler) << "Adding " << descriptor << " to image classes"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 767 | } else { |
| 768 | return; |
| 769 | } |
| 770 | for (size_t i = 0; i < kh.NumDirectInterfaces(); ++i) { |
| 771 | MaybeAddToImageClasses(kh.GetDirectInterface(i), image_classes); |
| 772 | } |
| 773 | if (klass->IsArrayClass()) { |
| 774 | MaybeAddToImageClasses(klass->GetComponentType(), image_classes); |
| 775 | } |
| 776 | klass = klass->GetSuperClass(); |
| 777 | } |
| 778 | } |
| 779 | |
| 780 | void CompilerDriver::FindClinitImageClassesCallback(mirror::Object* object, void* arg) { |
| 781 | DCHECK(object != NULL); |
| 782 | DCHECK(arg != NULL); |
| 783 | CompilerDriver* compiler_driver = reinterpret_cast<CompilerDriver*>(arg); |
| 784 | MaybeAddToImageClasses(object->GetClass(), compiler_driver->image_classes_.get()); |
| 785 | } |
| 786 | |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 787 | void CompilerDriver::UpdateImageClasses(TimingLogger* timings) { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 788 | if (IsImage()) { |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 789 | timings->NewSplit("UpdateImageClasses"); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 790 | |
| 791 | // Update image_classes_ with classes for objects created by <clinit> methods. |
| 792 | Thread* self = Thread::Current(); |
| 793 | const char* old_cause = self->StartAssertNoThreadSuspension("ImageWriter"); |
| 794 | gc::Heap* heap = Runtime::Current()->GetHeap(); |
| 795 | // TODO: Image spaces only? |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 796 | ScopedObjectAccess soa(Thread::Current()); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 797 | WriterMutexLock mu(self, *Locks::heap_bitmap_lock_); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 798 | heap->VisitObjects(FindClinitImageClassesCallback, this); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 799 | self->EndAssertNoThreadSuspension(old_cause); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 800 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 801 | } |
| 802 | |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 803 | bool CompilerDriver::CanAssumeTypeIsPresentInDexCache(const DexFile& dex_file, uint32_t type_idx) { |
Ian Rogers | fc0e94b | 2013-09-23 23:51:32 -0700 | [diff] [blame] | 804 | if (IsImage() && |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 805 | IsImageClass(dex_file.StringDataByIdx(dex_file.GetTypeId(type_idx).descriptor_idx_))) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 806 | if (kIsDebugBuild) { |
| 807 | ScopedObjectAccess soa(Thread::Current()); |
| 808 | mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); |
| 809 | mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); |
| 810 | CHECK(resolved_class != NULL); |
| 811 | } |
| 812 | stats_->TypeInDexCache(); |
| 813 | return true; |
| 814 | } else { |
| 815 | stats_->TypeNotInDexCache(); |
| 816 | return false; |
| 817 | } |
| 818 | } |
| 819 | |
| 820 | bool CompilerDriver::CanAssumeStringIsPresentInDexCache(const DexFile& dex_file, |
| 821 | uint32_t string_idx) { |
| 822 | // See also Compiler::ResolveDexFile |
| 823 | |
| 824 | bool result = false; |
| 825 | if (IsImage()) { |
| 826 | // We resolve all const-string strings when building for the image. |
| 827 | ScopedObjectAccess soa(Thread::Current()); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 828 | StackHandleScope<1> hs(soa.Self()); |
| 829 | Handle<mirror::DexCache> dex_cache( |
| 830 | hs.NewHandle(Runtime::Current()->GetClassLinker()->FindDexCache(dex_file))); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 831 | Runtime::Current()->GetClassLinker()->ResolveString(dex_file, string_idx, dex_cache); |
| 832 | result = true; |
| 833 | } |
| 834 | if (result) { |
| 835 | stats_->StringInDexCache(); |
| 836 | } else { |
| 837 | stats_->StringNotInDexCache(); |
| 838 | } |
| 839 | return result; |
| 840 | } |
| 841 | |
| 842 | bool CompilerDriver::CanAccessTypeWithoutChecks(uint32_t referrer_idx, const DexFile& dex_file, |
| 843 | uint32_t type_idx, |
| 844 | bool* type_known_final, bool* type_known_abstract, |
| 845 | bool* equals_referrers_class) { |
| 846 | if (type_known_final != NULL) { |
| 847 | *type_known_final = false; |
| 848 | } |
| 849 | if (type_known_abstract != NULL) { |
| 850 | *type_known_abstract = false; |
| 851 | } |
| 852 | if (equals_referrers_class != NULL) { |
| 853 | *equals_referrers_class = false; |
| 854 | } |
| 855 | ScopedObjectAccess soa(Thread::Current()); |
| 856 | mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); |
| 857 | // Get type from dex cache assuming it was populated by the verifier |
| 858 | mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); |
| 859 | if (resolved_class == NULL) { |
| 860 | stats_->TypeNeedsAccessCheck(); |
| 861 | return false; // Unknown class needs access checks. |
| 862 | } |
| 863 | const DexFile::MethodId& method_id = dex_file.GetMethodId(referrer_idx); |
| 864 | if (equals_referrers_class != NULL) { |
| 865 | *equals_referrers_class = (method_id.class_idx_ == type_idx); |
| 866 | } |
| 867 | mirror::Class* referrer_class = dex_cache->GetResolvedType(method_id.class_idx_); |
| 868 | if (referrer_class == NULL) { |
| 869 | stats_->TypeNeedsAccessCheck(); |
| 870 | return false; // Incomplete referrer knowledge needs access check. |
| 871 | } |
| 872 | // Perform access check, will return true if access is ok or false if we're going to have to |
| 873 | // check this at runtime (for example for class loaders). |
| 874 | bool result = referrer_class->CanAccess(resolved_class); |
| 875 | if (result) { |
| 876 | stats_->TypeDoesntNeedAccessCheck(); |
| 877 | if (type_known_final != NULL) { |
| 878 | *type_known_final = resolved_class->IsFinal() && !resolved_class->IsArrayClass(); |
| 879 | } |
| 880 | if (type_known_abstract != NULL) { |
| 881 | *type_known_abstract = resolved_class->IsAbstract() && !resolved_class->IsArrayClass(); |
| 882 | } |
| 883 | } else { |
| 884 | stats_->TypeNeedsAccessCheck(); |
| 885 | } |
| 886 | return result; |
| 887 | } |
| 888 | |
| 889 | bool CompilerDriver::CanAccessInstantiableTypeWithoutChecks(uint32_t referrer_idx, |
| 890 | const DexFile& dex_file, |
| 891 | uint32_t type_idx) { |
| 892 | ScopedObjectAccess soa(Thread::Current()); |
| 893 | mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); |
| 894 | // Get type from dex cache assuming it was populated by the verifier. |
| 895 | mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); |
| 896 | if (resolved_class == NULL) { |
| 897 | stats_->TypeNeedsAccessCheck(); |
| 898 | return false; // Unknown class needs access checks. |
| 899 | } |
| 900 | const DexFile::MethodId& method_id = dex_file.GetMethodId(referrer_idx); |
| 901 | mirror::Class* referrer_class = dex_cache->GetResolvedType(method_id.class_idx_); |
| 902 | if (referrer_class == NULL) { |
| 903 | stats_->TypeNeedsAccessCheck(); |
| 904 | return false; // Incomplete referrer knowledge needs access check. |
| 905 | } |
| 906 | // Perform access and instantiable checks, will return true if access is ok or false if we're |
| 907 | // going to have to check this at runtime (for example for class loaders). |
| 908 | bool result = referrer_class->CanAccess(resolved_class) && resolved_class->IsInstantiable(); |
| 909 | if (result) { |
| 910 | stats_->TypeDoesntNeedAccessCheck(); |
| 911 | } else { |
| 912 | stats_->TypeNeedsAccessCheck(); |
| 913 | } |
| 914 | return result; |
| 915 | } |
| 916 | |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 917 | bool CompilerDriver::CanEmbedTypeInCode(const DexFile& dex_file, uint32_t type_idx, |
| 918 | bool* is_type_initialized, bool* use_direct_type_ptr, |
Mathieu Chartier | 8668c3c | 2014-04-24 16:48:11 -0700 | [diff] [blame] | 919 | uintptr_t* direct_type_ptr, bool* out_is_finalizable) { |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 920 | ScopedObjectAccess soa(Thread::Current()); |
| 921 | mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); |
| 922 | mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); |
| 923 | if (resolved_class == nullptr) { |
| 924 | return false; |
| 925 | } |
Mathieu Chartier | 8668c3c | 2014-04-24 16:48:11 -0700 | [diff] [blame] | 926 | *out_is_finalizable = resolved_class->IsFinalizable(); |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 927 | const bool compiling_boot = Runtime::Current()->GetHeap()->IsCompilingBoot(); |
| 928 | if (compiling_boot) { |
| 929 | // boot -> boot class pointers. |
| 930 | // True if the class is in the image at boot compiling time. |
| 931 | const bool is_image_class = IsImage() && IsImageClass( |
| 932 | dex_file.StringDataByIdx(dex_file.GetTypeId(type_idx).descriptor_idx_)); |
| 933 | // True if pc relative load works. |
| 934 | const bool support_boot_image_fixup = GetSupportBootImageFixup(); |
| 935 | if (is_image_class && support_boot_image_fixup) { |
| 936 | *is_type_initialized = resolved_class->IsInitialized(); |
| 937 | *use_direct_type_ptr = false; |
| 938 | *direct_type_ptr = 0; |
| 939 | return true; |
| 940 | } else { |
| 941 | return false; |
| 942 | } |
| 943 | } else { |
| 944 | // True if the class is in the image at app compiling time. |
| 945 | const bool class_in_image = |
| 946 | Runtime::Current()->GetHeap()->FindSpaceFromObject(resolved_class, false)->IsImageSpace(); |
| 947 | if (class_in_image) { |
| 948 | // boot -> app class pointers. |
| 949 | *is_type_initialized = resolved_class->IsInitialized(); |
| 950 | *use_direct_type_ptr = true; |
| 951 | *direct_type_ptr = reinterpret_cast<uintptr_t>(resolved_class); |
| 952 | return true; |
| 953 | } else { |
| 954 | // app -> app class pointers. |
| 955 | // Give up because app does not have an image and class |
| 956 | // isn't created at compile time. TODO: implement this |
| 957 | // if/when each app gets an image. |
| 958 | return false; |
| 959 | } |
| 960 | } |
| 961 | } |
| 962 | |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 963 | void CompilerDriver::ProcessedInstanceField(bool resolved) { |
| 964 | if (!resolved) { |
| 965 | stats_->UnresolvedInstanceField(); |
| 966 | } else { |
| 967 | stats_->ResolvedInstanceField(); |
| 968 | } |
| 969 | } |
| 970 | |
| 971 | void CompilerDriver::ProcessedStaticField(bool resolved, bool local) { |
| 972 | if (!resolved) { |
| 973 | stats_->UnresolvedStaticField(); |
| 974 | } else if (local) { |
| 975 | stats_->ResolvedLocalStaticField(); |
| 976 | } else { |
| 977 | stats_->ResolvedStaticField(); |
| 978 | } |
| 979 | } |
| 980 | |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 981 | void CompilerDriver::ProcessedInvoke(InvokeType invoke_type, int flags) { |
| 982 | stats_->ProcessedInvoke(invoke_type, flags); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 983 | } |
| 984 | |
| 985 | bool CompilerDriver::ComputeInstanceFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 986 | bool is_put, MemberOffset* field_offset, |
| 987 | bool* is_volatile) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 988 | ScopedObjectAccess soa(Thread::Current()); |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 989 | // Try to resolve the field and compiling method's class. |
| 990 | mirror::ArtField* resolved_field; |
| 991 | mirror::Class* referrer_class; |
| 992 | mirror::DexCache* dex_cache; |
| 993 | { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 994 | StackHandleScope<3> hs(soa.Self()); |
| 995 | Handle<mirror::DexCache> dex_cache_handle( |
| 996 | hs.NewHandle(mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile()))); |
| 997 | Handle<mirror::ClassLoader> class_loader_handle( |
| 998 | hs.NewHandle(soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader()))); |
| 999 | Handle<mirror::ArtField> resolved_field_handle(hs.NewHandle( |
| 1000 | ResolveField(soa, dex_cache_handle, class_loader_handle, mUnit, field_idx, false))); |
| 1001 | referrer_class = (resolved_field_handle.Get() != nullptr) |
| 1002 | ? ResolveCompilingMethodsClass(soa, dex_cache_handle, class_loader_handle, mUnit) : nullptr; |
| 1003 | resolved_field = resolved_field_handle.Get(); |
| 1004 | dex_cache = dex_cache_handle.Get(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1005 | } |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1006 | bool result = false; |
| 1007 | if (resolved_field != nullptr && referrer_class != nullptr) { |
| 1008 | *is_volatile = IsFieldVolatile(resolved_field); |
| 1009 | std::pair<bool, bool> fast_path = IsFastInstanceField( |
| 1010 | dex_cache, referrer_class, resolved_field, field_idx, field_offset); |
| 1011 | result = is_put ? fast_path.second : fast_path.first; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1012 | } |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1013 | if (!result) { |
| 1014 | // Conservative defaults. |
| 1015 | *is_volatile = true; |
| 1016 | *field_offset = MemberOffset(static_cast<size_t>(-1)); |
| 1017 | } |
| 1018 | ProcessedInstanceField(result); |
| 1019 | return result; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1020 | } |
| 1021 | |
| 1022 | bool CompilerDriver::ComputeStaticFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1023 | bool is_put, MemberOffset* field_offset, |
| 1024 | uint32_t* storage_index, bool* is_referrers_class, |
| 1025 | bool* is_volatile, bool* is_initialized) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1026 | ScopedObjectAccess soa(Thread::Current()); |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1027 | // Try to resolve the field and compiling method's class. |
| 1028 | mirror::ArtField* resolved_field; |
| 1029 | mirror::Class* referrer_class; |
| 1030 | mirror::DexCache* dex_cache; |
| 1031 | { |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1032 | StackHandleScope<3> hs(soa.Self()); |
| 1033 | Handle<mirror::DexCache> dex_cache_handle( |
| 1034 | hs.NewHandle(mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile()))); |
| 1035 | Handle<mirror::ClassLoader> class_loader_handle( |
| 1036 | hs.NewHandle(soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader()))); |
| 1037 | Handle<mirror::ArtField> resolved_field_handle(hs.NewHandle( |
| 1038 | ResolveField(soa, dex_cache_handle, class_loader_handle, mUnit, field_idx, true))); |
| 1039 | referrer_class = (resolved_field_handle.Get() != nullptr) |
| 1040 | ? ResolveCompilingMethodsClass(soa, dex_cache_handle, class_loader_handle, mUnit) : nullptr; |
| 1041 | resolved_field = resolved_field_handle.Get(); |
| 1042 | dex_cache = dex_cache_handle.Get(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1043 | } |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1044 | bool result = false; |
| 1045 | if (resolved_field != nullptr && referrer_class != nullptr) { |
| 1046 | *is_volatile = IsFieldVolatile(resolved_field); |
| 1047 | std::pair<bool, bool> fast_path = IsFastStaticField( |
| 1048 | dex_cache, referrer_class, resolved_field, field_idx, field_offset, |
| 1049 | storage_index, is_referrers_class, is_initialized); |
| 1050 | result = is_put ? fast_path.second : fast_path.first; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1051 | } |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1052 | if (!result) { |
| 1053 | // Conservative defaults. |
| 1054 | *is_volatile = true; |
| 1055 | *field_offset = MemberOffset(static_cast<size_t>(-1)); |
| 1056 | *storage_index = -1; |
| 1057 | *is_referrers_class = false; |
| 1058 | *is_initialized = false; |
| 1059 | } |
| 1060 | ProcessedStaticField(result, *is_referrers_class); |
| 1061 | return result; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1062 | } |
| 1063 | |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1064 | void CompilerDriver::GetCodeAndMethodForDirectCall(InvokeType* type, InvokeType sharp_type, |
| 1065 | bool no_guarantee_of_dex_cache_entry, |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1066 | mirror::Class* referrer_class, |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 1067 | mirror::ArtMethod* method, |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1068 | int* stats_flags, |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1069 | MethodReference* target_method, |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1070 | uintptr_t* direct_code, |
| 1071 | uintptr_t* direct_method) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1072 | // For direct and static methods compute possible direct_code and direct_method values, ie |
| 1073 | // an address for the Method* being invoked and an address of the code for that Method*. |
| 1074 | // For interface calls compute a value for direct_method that is the interface method being |
| 1075 | // invoked, so this can be passed to the out-of-line runtime support code. |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1076 | *direct_code = 0; |
| 1077 | *direct_method = 0; |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1078 | bool use_dex_cache = false; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1079 | const bool compiling_boot = Runtime::Current()->GetHeap()->IsCompilingBoot(); |
Nicolas Geoffray | b34f69a | 2014-03-07 15:28:39 +0000 | [diff] [blame] | 1080 | if (compiler_->IsPortable()) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1081 | if (sharp_type != kStatic && sharp_type != kDirect) { |
| 1082 | return; |
| 1083 | } |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1084 | use_dex_cache = true; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1085 | } else { |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 1086 | if (sharp_type != kStatic && sharp_type != kDirect) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1087 | return; |
| 1088 | } |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1089 | // TODO: support patching on all architectures. |
| 1090 | use_dex_cache = compiling_boot && !support_boot_image_fixup_; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1091 | } |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1092 | bool method_code_in_boot = (method->GetDeclaringClass()->GetClassLoader() == nullptr); |
| 1093 | if (!use_dex_cache) { |
| 1094 | if (!method_code_in_boot) { |
| 1095 | use_dex_cache = true; |
| 1096 | } else { |
| 1097 | bool has_clinit_trampoline = |
| 1098 | method->IsStatic() && !method->GetDeclaringClass()->IsInitialized(); |
| 1099 | if (has_clinit_trampoline && (method->GetDeclaringClass() != referrer_class)) { |
| 1100 | // Ensure we run the clinit trampoline unless we are invoking a static method in the same |
| 1101 | // class. |
| 1102 | use_dex_cache = true; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1103 | } |
| 1104 | } |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1105 | } |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1106 | if (method_code_in_boot) { |
| 1107 | *stats_flags |= kFlagDirectCallToBoot | kFlagDirectMethodToBoot; |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1108 | } |
| 1109 | if (!use_dex_cache && compiling_boot) { |
| 1110 | MethodHelper mh(method); |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 1111 | if (!IsImageClass(mh.GetDeclaringClassDescriptor())) { |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1112 | // We can only branch directly to Methods that are resolved in the DexCache. |
| 1113 | // Otherwise we won't invoke the resolution trampoline. |
| 1114 | use_dex_cache = true; |
| 1115 | } |
| 1116 | } |
| 1117 | // The method is defined not within this dex file. We need a dex cache slot within the current |
| 1118 | // dex file or direct pointers. |
| 1119 | bool must_use_direct_pointers = false; |
| 1120 | if (target_method->dex_file == method->GetDeclaringClass()->GetDexCache()->GetDexFile()) { |
| 1121 | target_method->dex_method_index = method->GetDexMethodIndex(); |
| 1122 | } else { |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1123 | if (no_guarantee_of_dex_cache_entry) { |
| 1124 | // See if the method is also declared in this dex cache. |
| 1125 | uint32_t dex_method_idx = MethodHelper(method).FindDexMethodIndexInOtherDexFile( |
Vladimir Marko | bbcc0c0 | 2014-02-03 14:08:42 +0000 | [diff] [blame] | 1126 | *target_method->dex_file, target_method->dex_method_index); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1127 | if (dex_method_idx != DexFile::kDexNoIndex) { |
| 1128 | target_method->dex_method_index = dex_method_idx; |
| 1129 | } else { |
Jeff Hao | 49161ce | 2014-03-12 11:05:25 -0700 | [diff] [blame] | 1130 | if (compiling_boot) { |
| 1131 | target_method->dex_method_index = method->GetDexMethodIndex(); |
| 1132 | target_method->dex_file = method->GetDeclaringClass()->GetDexCache()->GetDexFile(); |
| 1133 | } |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1134 | must_use_direct_pointers = true; |
| 1135 | } |
| 1136 | } |
| 1137 | } |
| 1138 | if (use_dex_cache) { |
| 1139 | if (must_use_direct_pointers) { |
| 1140 | // Fail. Test above showed the only safe dispatch was via the dex cache, however, the direct |
| 1141 | // pointers are required as the dex cache lacks an appropriate entry. |
| 1142 | VLOG(compiler) << "Dex cache devirtualization failed for: " << PrettyMethod(method); |
| 1143 | } else { |
| 1144 | *type = sharp_type; |
| 1145 | } |
| 1146 | } else { |
| 1147 | if (compiling_boot) { |
| 1148 | *type = sharp_type; |
| 1149 | *direct_method = -1; |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 1150 | *direct_code = -1; |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1151 | } else { |
| 1152 | bool method_in_image = |
| 1153 | Runtime::Current()->GetHeap()->FindSpaceFromObject(method, false)->IsImageSpace(); |
| 1154 | if (method_in_image) { |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 1155 | CHECK(!method->IsAbstract()); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1156 | *type = sharp_type; |
| 1157 | *direct_method = reinterpret_cast<uintptr_t>(method); |
Nicolas Geoffray | b34f69a | 2014-03-07 15:28:39 +0000 | [diff] [blame] | 1158 | *direct_code = compiler_->GetEntryPointOf(method); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1159 | target_method->dex_file = method->GetDeclaringClass()->GetDexCache()->GetDexFile(); |
| 1160 | target_method->dex_method_index = method->GetDexMethodIndex(); |
| 1161 | } else if (!must_use_direct_pointers) { |
| 1162 | // Set the code and rely on the dex cache for the method. |
| 1163 | *type = sharp_type; |
Nicolas Geoffray | b34f69a | 2014-03-07 15:28:39 +0000 | [diff] [blame] | 1164 | *direct_code = compiler_->GetEntryPointOf(method); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1165 | } else { |
| 1166 | // Direct pointers were required but none were available. |
| 1167 | VLOG(compiler) << "Dex cache devirtualization failed for: " << PrettyMethod(method); |
| 1168 | } |
| 1169 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1170 | } |
| 1171 | } |
| 1172 | |
| 1173 | bool CompilerDriver::ComputeInvokeInfo(const DexCompilationUnit* mUnit, const uint32_t dex_pc, |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1174 | bool update_stats, bool enable_devirtualization, |
| 1175 | InvokeType* invoke_type, MethodReference* target_method, |
| 1176 | int* vtable_idx, uintptr_t* direct_code, |
| 1177 | uintptr_t* direct_method) { |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1178 | InvokeType orig_invoke_type = *invoke_type; |
| 1179 | int stats_flags = 0; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1180 | ScopedObjectAccess soa(Thread::Current()); |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1181 | // Try to resolve the method and compiling method's class. |
| 1182 | mirror::ArtMethod* resolved_method; |
| 1183 | mirror::Class* referrer_class; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1184 | StackHandleScope<3> hs(soa.Self()); |
| 1185 | Handle<mirror::DexCache> dex_cache( |
| 1186 | hs.NewHandle(mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile()))); |
| 1187 | Handle<mirror::ClassLoader> class_loader(hs.NewHandle( |
| 1188 | soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader()))); |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1189 | { |
| 1190 | uint32_t method_idx = target_method->dex_method_index; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1191 | Handle<mirror::ArtMethod> resolved_method_handle(hs.NewHandle( |
| 1192 | ResolveMethod(soa, dex_cache, class_loader, mUnit, method_idx, orig_invoke_type))); |
| 1193 | referrer_class = (resolved_method_handle.Get() != nullptr) |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1194 | ? ResolveCompilingMethodsClass(soa, dex_cache, class_loader, mUnit) : nullptr; |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1195 | resolved_method = resolved_method_handle.Get(); |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1196 | } |
| 1197 | bool result = false; |
| 1198 | if (resolved_method != nullptr) { |
| 1199 | *vtable_idx = GetResolvedMethodVTableIndex(resolved_method, orig_invoke_type); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1200 | |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1201 | if (enable_devirtualization) { |
| 1202 | DCHECK(mUnit->GetVerifiedMethod() != nullptr); |
| 1203 | const MethodReference* devirt_target = mUnit->GetVerifiedMethod()->GetDevirtTarget(dex_pc); |
| 1204 | |
| 1205 | stats_flags = IsFastInvoke( |
| 1206 | soa, dex_cache, class_loader, mUnit, referrer_class, resolved_method, |
| 1207 | invoke_type, target_method, devirt_target, direct_code, direct_method); |
| 1208 | result = stats_flags != 0; |
| 1209 | } else { |
| 1210 | // Devirtualization not enabled. Inline IsFastInvoke(), dropping the devirtualization parts. |
| 1211 | if (UNLIKELY(referrer_class == nullptr) || |
| 1212 | UNLIKELY(!referrer_class->CanAccessResolvedMethod(resolved_method->GetDeclaringClass(), |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1213 | resolved_method, dex_cache.Get(), |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1214 | target_method->dex_method_index)) || |
| 1215 | *invoke_type == kSuper) { |
| 1216 | // Slow path. (Without devirtualization, all super calls go slow path as well.) |
| 1217 | } else { |
| 1218 | // Sharpening failed so generate a regular resolved method dispatch. |
| 1219 | stats_flags = kFlagMethodResolved; |
| 1220 | GetCodeAndMethodForDirectCall(invoke_type, *invoke_type, false, referrer_class, resolved_method, |
| 1221 | &stats_flags, target_method, direct_code, direct_method); |
| 1222 | result = true; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1223 | } |
| 1224 | } |
| 1225 | } |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1226 | if (!result) { |
| 1227 | // Conservative defaults. |
| 1228 | *vtable_idx = -1; |
| 1229 | *direct_code = 0u; |
| 1230 | *direct_method = 0u; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1231 | } |
| 1232 | if (update_stats) { |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1233 | ProcessedInvoke(orig_invoke_type, stats_flags); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1234 | } |
Vladimir Marko | f096aad | 2014-01-23 15:51:58 +0000 | [diff] [blame] | 1235 | return result; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1236 | } |
| 1237 | |
Vladimir Marko | 2730db0 | 2014-01-27 11:15:17 +0000 | [diff] [blame] | 1238 | const VerifiedMethod* CompilerDriver::GetVerifiedMethod(const DexFile* dex_file, |
| 1239 | uint32_t method_idx) const { |
| 1240 | MethodReference ref(dex_file, method_idx); |
| 1241 | return verification_results_->GetVerifiedMethod(ref); |
| 1242 | } |
| 1243 | |
| 1244 | bool CompilerDriver::IsSafeCast(const DexCompilationUnit* mUnit, uint32_t dex_pc) { |
| 1245 | DCHECK(mUnit->GetVerifiedMethod() != nullptr); |
| 1246 | bool result = mUnit->GetVerifiedMethod()->IsSafeCast(dex_pc); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1247 | if (result) { |
| 1248 | stats_->SafeCast(); |
| 1249 | } else { |
| 1250 | stats_->NotASafeCast(); |
| 1251 | } |
| 1252 | return result; |
| 1253 | } |
| 1254 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1255 | void CompilerDriver::AddCodePatch(const DexFile* dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1256 | uint16_t referrer_class_def_idx, |
| 1257 | uint32_t referrer_method_idx, |
| 1258 | InvokeType referrer_invoke_type, |
| 1259 | uint32_t target_method_idx, |
Jeff Hao | 49161ce | 2014-03-12 11:05:25 -0700 | [diff] [blame] | 1260 | const DexFile* target_dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1261 | InvokeType target_invoke_type, |
| 1262 | size_t literal_offset) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1263 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 1264 | code_to_patch_.push_back(new CallPatchInformation(dex_file, |
| 1265 | referrer_class_def_idx, |
| 1266 | referrer_method_idx, |
| 1267 | referrer_invoke_type, |
| 1268 | target_method_idx, |
Jeff Hao | 49161ce | 2014-03-12 11:05:25 -0700 | [diff] [blame] | 1269 | target_dex_file, |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 1270 | target_invoke_type, |
| 1271 | literal_offset)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1272 | } |
Mark Mendell | 55d0eac | 2014-02-06 11:02:52 -0800 | [diff] [blame] | 1273 | void CompilerDriver::AddRelativeCodePatch(const DexFile* dex_file, |
| 1274 | uint16_t referrer_class_def_idx, |
| 1275 | uint32_t referrer_method_idx, |
| 1276 | InvokeType referrer_invoke_type, |
| 1277 | uint32_t target_method_idx, |
Jeff Hao | 49161ce | 2014-03-12 11:05:25 -0700 | [diff] [blame] | 1278 | const DexFile* target_dex_file, |
Mark Mendell | 55d0eac | 2014-02-06 11:02:52 -0800 | [diff] [blame] | 1279 | InvokeType target_invoke_type, |
| 1280 | size_t literal_offset, |
| 1281 | int32_t pc_relative_offset) { |
| 1282 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
| 1283 | code_to_patch_.push_back(new RelativeCallPatchInformation(dex_file, |
| 1284 | referrer_class_def_idx, |
| 1285 | referrer_method_idx, |
| 1286 | referrer_invoke_type, |
| 1287 | target_method_idx, |
Jeff Hao | 49161ce | 2014-03-12 11:05:25 -0700 | [diff] [blame] | 1288 | target_dex_file, |
Mark Mendell | 55d0eac | 2014-02-06 11:02:52 -0800 | [diff] [blame] | 1289 | target_invoke_type, |
| 1290 | literal_offset, |
| 1291 | pc_relative_offset)); |
| 1292 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1293 | void CompilerDriver::AddMethodPatch(const DexFile* dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1294 | uint16_t referrer_class_def_idx, |
| 1295 | uint32_t referrer_method_idx, |
| 1296 | InvokeType referrer_invoke_type, |
| 1297 | uint32_t target_method_idx, |
Jeff Hao | 49161ce | 2014-03-12 11:05:25 -0700 | [diff] [blame] | 1298 | const DexFile* target_dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1299 | InvokeType target_invoke_type, |
| 1300 | size_t literal_offset) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1301 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 1302 | methods_to_patch_.push_back(new CallPatchInformation(dex_file, |
| 1303 | referrer_class_def_idx, |
| 1304 | referrer_method_idx, |
| 1305 | referrer_invoke_type, |
| 1306 | target_method_idx, |
Jeff Hao | 49161ce | 2014-03-12 11:05:25 -0700 | [diff] [blame] | 1307 | target_dex_file, |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 1308 | target_invoke_type, |
| 1309 | literal_offset)); |
| 1310 | } |
| 1311 | void CompilerDriver::AddClassPatch(const DexFile* dex_file, |
| 1312 | uint16_t referrer_class_def_idx, |
| 1313 | uint32_t referrer_method_idx, |
| 1314 | uint32_t target_type_idx, |
| 1315 | size_t literal_offset) { |
| 1316 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
| 1317 | classes_to_patch_.push_back(new TypePatchInformation(dex_file, |
| 1318 | referrer_class_def_idx, |
| 1319 | referrer_method_idx, |
| 1320 | target_type_idx, |
| 1321 | literal_offset)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1322 | } |
| 1323 | |
| 1324 | class ParallelCompilationManager { |
| 1325 | public: |
| 1326 | typedef void Callback(const ParallelCompilationManager* manager, size_t index); |
| 1327 | |
| 1328 | ParallelCompilationManager(ClassLinker* class_linker, |
| 1329 | jobject class_loader, |
| 1330 | CompilerDriver* compiler, |
| 1331 | const DexFile* dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1332 | ThreadPool* thread_pool) |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1333 | : index_(0), |
| 1334 | class_linker_(class_linker), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1335 | class_loader_(class_loader), |
| 1336 | compiler_(compiler), |
| 1337 | dex_file_(dex_file), |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1338 | thread_pool_(thread_pool) {} |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1339 | |
| 1340 | ClassLinker* GetClassLinker() const { |
| 1341 | CHECK(class_linker_ != NULL); |
| 1342 | return class_linker_; |
| 1343 | } |
| 1344 | |
| 1345 | jobject GetClassLoader() const { |
| 1346 | return class_loader_; |
| 1347 | } |
| 1348 | |
| 1349 | CompilerDriver* GetCompiler() const { |
| 1350 | CHECK(compiler_ != NULL); |
| 1351 | return compiler_; |
| 1352 | } |
| 1353 | |
| 1354 | const DexFile* GetDexFile() const { |
| 1355 | CHECK(dex_file_ != NULL); |
| 1356 | return dex_file_; |
| 1357 | } |
| 1358 | |
| 1359 | void ForAll(size_t begin, size_t end, Callback callback, size_t work_units) { |
| 1360 | Thread* self = Thread::Current(); |
| 1361 | self->AssertNoPendingException(); |
| 1362 | CHECK_GT(work_units, 0U); |
| 1363 | |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1364 | index_ = begin; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1365 | for (size_t i = 0; i < work_units; ++i) { |
Sebastien Hertz | 501baec | 2013-12-13 12:02:36 +0100 | [diff] [blame] | 1366 | thread_pool_->AddTask(self, new ForAllClosure(this, end, callback)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1367 | } |
| 1368 | thread_pool_->StartWorkers(self); |
| 1369 | |
| 1370 | // Ensure we're suspended while we're blocked waiting for the other threads to finish (worker |
| 1371 | // thread destructor's called below perform join). |
| 1372 | CHECK_NE(self->GetState(), kRunnable); |
| 1373 | |
| 1374 | // Wait for all the worker threads to finish. |
| 1375 | thread_pool_->Wait(self, true, false); |
| 1376 | } |
| 1377 | |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1378 | size_t NextIndex() { |
Ian Rogers | b122a4b | 2013-11-19 18:00:50 -0800 | [diff] [blame] | 1379 | return index_.FetchAndAdd(1); |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1380 | } |
| 1381 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1382 | private: |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1383 | class ForAllClosure : public Task { |
| 1384 | public: |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1385 | ForAllClosure(ParallelCompilationManager* manager, size_t end, Callback* callback) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1386 | : manager_(manager), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1387 | end_(end), |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1388 | callback_(callback) {} |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1389 | |
| 1390 | virtual void Run(Thread* self) { |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1391 | while (true) { |
| 1392 | const size_t index = manager_->NextIndex(); |
| 1393 | if (UNLIKELY(index >= end_)) { |
| 1394 | break; |
| 1395 | } |
| 1396 | callback_(manager_, index); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1397 | self->AssertNoPendingException(); |
| 1398 | } |
| 1399 | } |
| 1400 | |
| 1401 | virtual void Finalize() { |
| 1402 | delete this; |
| 1403 | } |
Brian Carlstrom | 0cd7ec2 | 2013-07-17 23:40:20 -0700 | [diff] [blame] | 1404 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1405 | private: |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1406 | ParallelCompilationManager* const manager_; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1407 | const size_t end_; |
Bernhard Rosenkränzer | 4605362 | 2013-12-12 02:15:52 +0100 | [diff] [blame] | 1408 | Callback* const callback_; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1409 | }; |
| 1410 | |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1411 | AtomicInteger index_; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1412 | ClassLinker* const class_linker_; |
| 1413 | const jobject class_loader_; |
| 1414 | CompilerDriver* const compiler_; |
| 1415 | const DexFile* const dex_file_; |
| 1416 | ThreadPool* const thread_pool_; |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1417 | |
| 1418 | DISALLOW_COPY_AND_ASSIGN(ParallelCompilationManager); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1419 | }; |
| 1420 | |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1421 | // Return true if the class should be skipped during compilation. |
| 1422 | // |
| 1423 | // The first case where we skip is for redundant class definitions in |
| 1424 | // the boot classpath. We skip all but the first definition in that case. |
| 1425 | // |
| 1426 | // The second case where we skip is when an app bundles classes found |
| 1427 | // in the boot classpath. Since at runtime we will select the class from |
| 1428 | // the boot classpath, we ignore the one from the app. |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1429 | static bool SkipClass(ClassLinker* class_linker, jobject class_loader, const DexFile& dex_file, |
| 1430 | const DexFile::ClassDef& class_def) { |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1431 | const char* descriptor = dex_file.GetClassDescriptor(class_def); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1432 | if (class_loader == NULL) { |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1433 | DexFile::ClassPathEntry pair = DexFile::FindInClassPath(descriptor, class_linker->GetBootClassPath()); |
| 1434 | CHECK(pair.second != NULL); |
| 1435 | if (pair.first != &dex_file) { |
| 1436 | LOG(WARNING) << "Skipping class " << descriptor << " from " << dex_file.GetLocation() |
| 1437 | << " previously found in " << pair.first->GetLocation(); |
| 1438 | return true; |
| 1439 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1440 | return false; |
| 1441 | } |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1442 | return class_linker->IsInBootClassPath(descriptor); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1443 | } |
| 1444 | |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1445 | // A fast version of SkipClass above if the class pointer is available |
| 1446 | // that avoids the expensive FindInClassPath search. |
| 1447 | static bool SkipClass(jobject class_loader, const DexFile& dex_file, mirror::Class* klass) |
| 1448 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 1449 | DCHECK(klass != NULL); |
| 1450 | const DexFile& original_dex_file = *klass->GetDexCache()->GetDexFile(); |
| 1451 | if (&dex_file != &original_dex_file) { |
| 1452 | if (class_loader == NULL) { |
| 1453 | LOG(WARNING) << "Skipping class " << PrettyDescriptor(klass) << " from " |
| 1454 | << dex_file.GetLocation() << " previously found in " |
| 1455 | << original_dex_file.GetLocation(); |
| 1456 | } |
| 1457 | return true; |
| 1458 | } |
| 1459 | return false; |
| 1460 | } |
| 1461 | |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1462 | static void ResolveClassFieldsAndMethods(const ParallelCompilationManager* manager, |
| 1463 | size_t class_def_index) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1464 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1465 | ATRACE_CALL(); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1466 | Thread* self = Thread::Current(); |
| 1467 | jobject jclass_loader = manager->GetClassLoader(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1468 | const DexFile& dex_file = *manager->GetDexFile(); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1469 | ClassLinker* class_linker = manager->GetClassLinker(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1470 | |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1471 | // If an instance field is final then we need to have a barrier on the return, static final |
| 1472 | // fields are assigned within the lock held for class initialization. Conservatively assume |
| 1473 | // constructor barriers are always required. |
| 1474 | bool requires_constructor_barrier = true; |
| 1475 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1476 | // Method and Field are the worst. We can't resolve without either |
| 1477 | // context from the code use (to disambiguate virtual vs direct |
| 1478 | // method and instance vs static field) or from class |
| 1479 | // definitions. While the compiler will resolve what it can as it |
| 1480 | // needs it, here we try to resolve fields and methods used in class |
| 1481 | // definitions, since many of them many never be referenced by |
| 1482 | // generated code. |
| 1483 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1484 | if (!SkipClass(class_linker, jclass_loader, dex_file, class_def)) { |
Brian Carlstrom | cb5f5e5 | 2013-09-23 17:48:16 -0700 | [diff] [blame] | 1485 | ScopedObjectAccess soa(self); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1486 | StackHandleScope<2> hs(soa.Self()); |
| 1487 | Handle<mirror::ClassLoader> class_loader( |
| 1488 | hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader))); |
| 1489 | Handle<mirror::DexCache> dex_cache(hs.NewHandle(class_linker->FindDexCache(dex_file))); |
Brian Carlstrom | cb5f5e5 | 2013-09-23 17:48:16 -0700 | [diff] [blame] | 1490 | // Resolve the class. |
| 1491 | mirror::Class* klass = class_linker->ResolveType(dex_file, class_def.class_idx_, dex_cache, |
| 1492 | class_loader); |
Brian Carlstrom | cb5f5e5 | 2013-09-23 17:48:16 -0700 | [diff] [blame] | 1493 | bool resolve_fields_and_methods; |
| 1494 | if (klass == NULL) { |
| 1495 | // Class couldn't be resolved, for example, super-class is in a different dex file. Don't |
| 1496 | // attempt to resolve methods and fields when there is no declaring class. |
| 1497 | CHECK(soa.Self()->IsExceptionPending()); |
| 1498 | soa.Self()->ClearException(); |
| 1499 | resolve_fields_and_methods = false; |
| 1500 | } else { |
| 1501 | resolve_fields_and_methods = manager->GetCompiler()->IsImage(); |
| 1502 | } |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1503 | // Note the class_data pointer advances through the headers, |
| 1504 | // static fields, instance fields, direct methods, and virtual |
| 1505 | // methods. |
| 1506 | const byte* class_data = dex_file.GetClassData(class_def); |
| 1507 | if (class_data == NULL) { |
| 1508 | // Empty class such as a marker interface. |
| 1509 | requires_constructor_barrier = false; |
| 1510 | } else { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1511 | ClassDataItemIterator it(dex_file, class_data); |
| 1512 | while (it.HasNextStaticField()) { |
| 1513 | if (resolve_fields_and_methods) { |
| 1514 | mirror::ArtField* field = class_linker->ResolveField(dex_file, it.GetMemberIndex(), |
| 1515 | dex_cache, class_loader, true); |
| 1516 | if (field == NULL) { |
| 1517 | CHECK(soa.Self()->IsExceptionPending()); |
| 1518 | soa.Self()->ClearException(); |
| 1519 | } |
| 1520 | } |
| 1521 | it.Next(); |
| 1522 | } |
| 1523 | // We require a constructor barrier if there are final instance fields. |
| 1524 | requires_constructor_barrier = false; |
| 1525 | while (it.HasNextInstanceField()) { |
| 1526 | if ((it.GetMemberAccessFlags() & kAccFinal) != 0) { |
| 1527 | requires_constructor_barrier = true; |
| 1528 | } |
| 1529 | if (resolve_fields_and_methods) { |
| 1530 | mirror::ArtField* field = class_linker->ResolveField(dex_file, it.GetMemberIndex(), |
| 1531 | dex_cache, class_loader, false); |
| 1532 | if (field == NULL) { |
| 1533 | CHECK(soa.Self()->IsExceptionPending()); |
| 1534 | soa.Self()->ClearException(); |
| 1535 | } |
| 1536 | } |
| 1537 | it.Next(); |
| 1538 | } |
| 1539 | if (resolve_fields_and_methods) { |
| 1540 | while (it.HasNextDirectMethod()) { |
| 1541 | mirror::ArtMethod* method = class_linker->ResolveMethod(dex_file, it.GetMemberIndex(), |
| 1542 | dex_cache, class_loader, NULL, |
| 1543 | it.GetMethodInvokeType(class_def)); |
| 1544 | if (method == NULL) { |
| 1545 | CHECK(soa.Self()->IsExceptionPending()); |
| 1546 | soa.Self()->ClearException(); |
| 1547 | } |
| 1548 | it.Next(); |
| 1549 | } |
| 1550 | while (it.HasNextVirtualMethod()) { |
| 1551 | mirror::ArtMethod* method = class_linker->ResolveMethod(dex_file, it.GetMemberIndex(), |
| 1552 | dex_cache, class_loader, NULL, |
| 1553 | it.GetMethodInvokeType(class_def)); |
| 1554 | if (method == NULL) { |
| 1555 | CHECK(soa.Self()->IsExceptionPending()); |
| 1556 | soa.Self()->ClearException(); |
| 1557 | } |
| 1558 | it.Next(); |
| 1559 | } |
| 1560 | DCHECK(!it.HasNext()); |
| 1561 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1562 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1563 | } |
| 1564 | if (requires_constructor_barrier) { |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1565 | manager->GetCompiler()->AddRequiresConstructorBarrier(self, &dex_file, class_def_index); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1566 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1567 | } |
| 1568 | |
| 1569 | static void ResolveType(const ParallelCompilationManager* manager, size_t type_idx) |
| 1570 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
| 1571 | // Class derived values are more complicated, they require the linker and loader. |
| 1572 | ScopedObjectAccess soa(Thread::Current()); |
| 1573 | ClassLinker* class_linker = manager->GetClassLinker(); |
| 1574 | const DexFile& dex_file = *manager->GetDexFile(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1575 | StackHandleScope<2> hs(soa.Self()); |
| 1576 | Handle<mirror::DexCache> dex_cache(hs.NewHandle(class_linker->FindDexCache(dex_file))); |
| 1577 | Handle<mirror::ClassLoader> class_loader( |
| 1578 | hs.NewHandle(soa.Decode<mirror::ClassLoader*>(manager->GetClassLoader()))); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1579 | mirror::Class* klass = class_linker->ResolveType(dex_file, type_idx, dex_cache, class_loader); |
| 1580 | |
| 1581 | if (klass == NULL) { |
| 1582 | CHECK(soa.Self()->IsExceptionPending()); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 1583 | mirror::Throwable* exception = soa.Self()->GetException(NULL); |
| 1584 | VLOG(compiler) << "Exception during type resolution: " << exception->Dump(); |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 1585 | if (strcmp("Ljava/lang/OutOfMemoryError;", |
| 1586 | ClassHelper(exception->GetClass()).GetDescriptor()) == 0) { |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 1587 | // There's little point continuing compilation if the heap is exhausted. |
| 1588 | LOG(FATAL) << "Out of memory during type resolution for compilation"; |
| 1589 | } |
| 1590 | soa.Self()->ClearException(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1591 | } |
| 1592 | } |
| 1593 | |
| 1594 | void CompilerDriver::ResolveDexFile(jobject class_loader, const DexFile& dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1595 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1596 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1597 | |
| 1598 | // TODO: we could resolve strings here, although the string table is largely filled with class |
| 1599 | // and method names. |
| 1600 | |
| 1601 | ParallelCompilationManager context(class_linker, class_loader, this, &dex_file, thread_pool); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1602 | if (IsImage()) { |
| 1603 | // For images we resolve all types, such as array, whereas for applications just those with |
| 1604 | // classdefs are resolved by ResolveClassFieldsAndMethods. |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1605 | timings->NewSplit("Resolve Types"); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1606 | context.ForAll(0, dex_file.NumTypeIds(), ResolveType, thread_count_); |
| 1607 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1608 | |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1609 | timings->NewSplit("Resolve MethodsAndFields"); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1610 | context.ForAll(0, dex_file.NumClassDefs(), ResolveClassFieldsAndMethods, thread_count_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1611 | } |
| 1612 | |
| 1613 | void CompilerDriver::Verify(jobject class_loader, const std::vector<const DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1614 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1615 | for (size_t i = 0; i != dex_files.size(); ++i) { |
| 1616 | const DexFile* dex_file = dex_files[i]; |
| 1617 | CHECK(dex_file != NULL); |
| 1618 | VerifyDexFile(class_loader, *dex_file, thread_pool, timings); |
| 1619 | } |
| 1620 | } |
| 1621 | |
| 1622 | static void VerifyClass(const ParallelCompilationManager* manager, size_t class_def_index) |
| 1623 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
Anwar Ghuloum | 67f9941 | 2013-08-12 14:19:48 -0700 | [diff] [blame] | 1624 | ATRACE_CALL(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1625 | ScopedObjectAccess soa(Thread::Current()); |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1626 | const DexFile& dex_file = *manager->GetDexFile(); |
| 1627 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); |
| 1628 | const char* descriptor = dex_file.GetClassDescriptor(class_def); |
| 1629 | ClassLinker* class_linker = manager->GetClassLinker(); |
| 1630 | jobject jclass_loader = manager->GetClassLoader(); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1631 | StackHandleScope<3> hs(soa.Self()); |
| 1632 | Handle<mirror::ClassLoader> class_loader( |
| 1633 | hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader))); |
| 1634 | Handle<mirror::Class> klass( |
| 1635 | hs.NewHandle(class_linker->FindClass(soa.Self(), descriptor, class_loader))); |
| 1636 | if (klass.Get() == nullptr) { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1637 | CHECK(soa.Self()->IsExceptionPending()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1638 | soa.Self()->ClearException(); |
| 1639 | |
| 1640 | /* |
| 1641 | * At compile time, we can still structurally verify the class even if FindClass fails. |
| 1642 | * This is to ensure the class is structurally sound for compilation. An unsound class |
| 1643 | * will be rejected by the verifier and later skipped during compilation in the compiler. |
| 1644 | */ |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1645 | Handle<mirror::DexCache> dex_cache(hs.NewHandle(class_linker->FindDexCache(dex_file))); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1646 | std::string error_msg; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1647 | if (verifier::MethodVerifier::VerifyClass(&dex_file, dex_cache, class_loader, &class_def, true, |
| 1648 | &error_msg) == |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1649 | verifier::MethodVerifier::kHardFailure) { |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1650 | LOG(ERROR) << "Verification failed on class " << PrettyDescriptor(descriptor) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1651 | << " because: " << error_msg; |
| 1652 | } |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1653 | } else if (!SkipClass(jclass_loader, dex_file, klass.Get())) { |
| 1654 | CHECK(klass->IsResolved()) << PrettyClass(klass.Get()); |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1655 | class_linker->VerifyClass(klass); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1656 | |
| 1657 | if (klass->IsErroneous()) { |
| 1658 | // ClassLinker::VerifyClass throws, which isn't useful in the compiler. |
| 1659 | CHECK(soa.Self()->IsExceptionPending()); |
| 1660 | soa.Self()->ClearException(); |
| 1661 | } |
| 1662 | |
| 1663 | CHECK(klass->IsCompileTimeVerified() || klass->IsErroneous()) |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1664 | << PrettyDescriptor(klass.Get()) << ": state=" << klass->GetStatus(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1665 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1666 | soa.Self()->AssertNoPendingException(); |
| 1667 | } |
| 1668 | |
| 1669 | void CompilerDriver::VerifyDexFile(jobject class_loader, const DexFile& dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1670 | ThreadPool* thread_pool, TimingLogger* timings) { |
| 1671 | timings->NewSplit("Verify Dex File"); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1672 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1673 | ParallelCompilationManager context(class_linker, class_loader, this, &dex_file, thread_pool); |
| 1674 | context.ForAll(0, dex_file.NumClassDefs(), VerifyClass, thread_count_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1675 | } |
| 1676 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1677 | static void InitializeClass(const ParallelCompilationManager* manager, size_t class_def_index) |
| 1678 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1679 | ATRACE_CALL(); |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1680 | jobject jclass_loader = manager->GetClassLoader(); |
| 1681 | const DexFile& dex_file = *manager->GetDexFile(); |
| 1682 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); |
Jeff Hao | bcdbbfe | 2013-11-08 18:03:22 -0800 | [diff] [blame] | 1683 | const DexFile::TypeId& class_type_id = dex_file.GetTypeId(class_def.class_idx_); |
| 1684 | const char* descriptor = dex_file.StringDataByIdx(class_type_id.descriptor_idx_); |
Ian Rogers | fc0e94b | 2013-09-23 23:51:32 -0700 | [diff] [blame] | 1685 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1686 | ScopedObjectAccess soa(Thread::Current()); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1687 | StackHandleScope<3> hs(soa.Self()); |
| 1688 | Handle<mirror::ClassLoader> class_loader( |
| 1689 | hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader))); |
| 1690 | Handle<mirror::Class> klass( |
| 1691 | hs.NewHandle(manager->GetClassLinker()->FindClass(soa.Self(), descriptor, class_loader))); |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1692 | |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1693 | if (klass.Get() != nullptr && !SkipClass(jclass_loader, dex_file, klass.Get())) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1694 | // Only try to initialize classes that were successfully verified. |
| 1695 | if (klass->IsVerified()) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1696 | // Attempt to initialize the class but bail if we either need to initialize the super-class |
| 1697 | // or static fields. |
| 1698 | manager->GetClassLinker()->EnsureInitialized(klass, false, false); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1699 | if (!klass->IsInitialized()) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1700 | // We don't want non-trivial class initialization occurring on multiple threads due to |
| 1701 | // deadlock problems. For example, a parent class is initialized (holding its lock) that |
| 1702 | // refers to a sub-class in its static/class initializer causing it to try to acquire the |
| 1703 | // sub-class' lock. While on a second thread the sub-class is initialized (holding its lock) |
| 1704 | // after first initializing its parents, whose locks are acquired. This leads to a |
| 1705 | // parent-to-child and a child-to-parent lock ordering and consequent potential deadlock. |
| 1706 | // We need to use an ObjectLock due to potential suspension in the interpreting code. Rather |
| 1707 | // than use a special Object for the purpose we use the Class of java.lang.Class. |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1708 | Handle<mirror::Class> h_klass(hs.NewHandle(klass->GetClass())); |
Mathieu Chartier | db2633c | 2014-05-16 09:59:29 -0700 | [diff] [blame^] | 1709 | ObjectLock<mirror::Class> lock(soa.Self(), h_klass); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1710 | // Attempt to initialize allowing initialization of parent classes but still not static |
| 1711 | // fields. |
| 1712 | manager->GetClassLinker()->EnsureInitialized(klass, false, true); |
| 1713 | if (!klass->IsInitialized()) { |
| 1714 | // We need to initialize static fields, we only do this for image classes that aren't |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1715 | // marked with the $NoPreloadHolder (which implies this should not be initialized early). |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1716 | bool can_init_static_fields = manager->GetCompiler()->IsImage() && |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1717 | manager->GetCompiler()->IsImageClass(descriptor) && |
| 1718 | !StringPiece(descriptor).ends_with("$NoPreloadHolder;"); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1719 | if (can_init_static_fields) { |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1720 | VLOG(compiler) << "Initializing: " << descriptor; |
Ian Rogers | c45b8b5 | 2014-05-03 01:39:59 -0700 | [diff] [blame] | 1721 | // TODO multithreading support. We should ensure the current compilation thread has |
| 1722 | // exclusive access to the runtime and the transaction. To achieve this, we could use |
| 1723 | // a ReaderWriterMutex but we're holding the mutator lock so we fail mutex sanity |
| 1724 | // checks in Thread::AssertThreadSuspensionIsAllowable. |
| 1725 | Runtime* const runtime = Runtime::Current(); |
| 1726 | Transaction transaction; |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1727 | |
Ian Rogers | c45b8b5 | 2014-05-03 01:39:59 -0700 | [diff] [blame] | 1728 | // Run the class initializer in transaction mode. |
| 1729 | runtime->EnterTransactionMode(&transaction); |
| 1730 | const mirror::Class::Status old_status = klass->GetStatus(); |
| 1731 | bool success = manager->GetClassLinker()->EnsureInitialized(klass, true, true); |
| 1732 | // TODO we detach transaction from runtime to indicate we quit the transactional |
| 1733 | // mode which prevents the GC from visiting objects modified during the transaction. |
| 1734 | // Ensure GC is not run so don't access freed objects when aborting transaction. |
| 1735 | const char* old_casue = soa.Self()->StartAssertNoThreadSuspension("Transaction end"); |
| 1736 | runtime->ExitTransactionMode(); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1737 | |
Ian Rogers | c45b8b5 | 2014-05-03 01:39:59 -0700 | [diff] [blame] | 1738 | if (!success) { |
| 1739 | CHECK(soa.Self()->IsExceptionPending()); |
| 1740 | ThrowLocation throw_location; |
| 1741 | mirror::Throwable* exception = soa.Self()->GetException(&throw_location); |
| 1742 | VLOG(compiler) << "Initialization of " << descriptor << " aborted because of " |
| 1743 | << exception->Dump(); |
| 1744 | soa.Self()->ClearException(); |
| 1745 | transaction.Abort(); |
| 1746 | CHECK_EQ(old_status, klass->GetStatus()) << "Previous class status not restored"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1747 | } |
Ian Rogers | c45b8b5 | 2014-05-03 01:39:59 -0700 | [diff] [blame] | 1748 | soa.Self()->EndAssertNoThreadSuspension(old_casue); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1749 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1750 | } |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1751 | soa.Self()->AssertNoPendingException(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1752 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1753 | } |
| 1754 | // Record the final class status if necessary. |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1755 | ClassReference ref(manager->GetDexFile(), class_def_index); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1756 | manager->GetCompiler()->RecordClassStatus(ref, klass->GetStatus()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1757 | } |
| 1758 | // Clear any class not found or verification exceptions. |
| 1759 | soa.Self()->ClearException(); |
| 1760 | } |
| 1761 | |
| 1762 | void CompilerDriver::InitializeClasses(jobject jni_class_loader, const DexFile& dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1763 | ThreadPool* thread_pool, TimingLogger* timings) { |
| 1764 | timings->NewSplit("InitializeNoClinit"); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1765 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1766 | ParallelCompilationManager context(class_linker, jni_class_loader, this, &dex_file, thread_pool); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1767 | size_t thread_count; |
| 1768 | if (IsImage()) { |
| 1769 | // TODO: remove this when transactional mode supports multithreading. |
| 1770 | thread_count = 1U; |
| 1771 | } else { |
| 1772 | thread_count = thread_count_; |
| 1773 | } |
| 1774 | context.ForAll(0, dex_file.NumClassDefs(), InitializeClass, thread_count); |
| 1775 | if (IsImage()) { |
| 1776 | // Prune garbage objects created during aborted transactions. |
| 1777 | Runtime::Current()->GetHeap()->CollectGarbage(true); |
| 1778 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1779 | } |
| 1780 | |
| 1781 | void CompilerDriver::InitializeClasses(jobject class_loader, |
| 1782 | const std::vector<const DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1783 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1784 | for (size_t i = 0; i != dex_files.size(); ++i) { |
| 1785 | const DexFile* dex_file = dex_files[i]; |
| 1786 | CHECK(dex_file != NULL); |
| 1787 | InitializeClasses(class_loader, *dex_file, thread_pool, timings); |
| 1788 | } |
| 1789 | } |
| 1790 | |
| 1791 | void CompilerDriver::Compile(jobject class_loader, const std::vector<const DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1792 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1793 | for (size_t i = 0; i != dex_files.size(); ++i) { |
| 1794 | const DexFile* dex_file = dex_files[i]; |
| 1795 | CHECK(dex_file != NULL); |
| 1796 | CompileDexFile(class_loader, *dex_file, thread_pool, timings); |
| 1797 | } |
| 1798 | } |
| 1799 | |
| 1800 | void CompilerDriver::CompileClass(const ParallelCompilationManager* manager, size_t class_def_index) { |
Anwar Ghuloum | 67f9941 | 2013-08-12 14:19:48 -0700 | [diff] [blame] | 1801 | ATRACE_CALL(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1802 | jobject jclass_loader = manager->GetClassLoader(); |
| 1803 | const DexFile& dex_file = *manager->GetDexFile(); |
| 1804 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1805 | ClassLinker* class_linker = manager->GetClassLinker(); |
| 1806 | if (SkipClass(class_linker, jclass_loader, dex_file, class_def)) { |
| 1807 | return; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1808 | } |
| 1809 | ClassReference ref(&dex_file, class_def_index); |
| 1810 | // Skip compiling classes with generic verifier failures since they will still fail at runtime |
Vladimir Marko | c7f8320 | 2014-01-24 17:55:18 +0000 | [diff] [blame] | 1811 | if (manager->GetCompiler()->verification_results_->IsClassRejected(ref)) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1812 | return; |
| 1813 | } |
| 1814 | const byte* class_data = dex_file.GetClassData(class_def); |
| 1815 | if (class_data == NULL) { |
| 1816 | // empty class, probably a marker interface |
| 1817 | return; |
| 1818 | } |
Anwar Ghuloum | 67f9941 | 2013-08-12 14:19:48 -0700 | [diff] [blame] | 1819 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1820 | // Can we run DEX-to-DEX compiler on this class ? |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 1821 | DexToDexCompilationLevel dex_to_dex_compilation_level = kDontDexToDexCompile; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1822 | { |
| 1823 | ScopedObjectAccess soa(Thread::Current()); |
Mathieu Chartier | eb8167a | 2014-05-07 15:43:14 -0700 | [diff] [blame] | 1824 | StackHandleScope<1> hs(soa.Self()); |
| 1825 | Handle<mirror::ClassLoader> class_loader( |
| 1826 | hs.NewHandle(soa.Decode<mirror::ClassLoader*>(jclass_loader))); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 1827 | dex_to_dex_compilation_level = GetDexToDexCompilationlevel(soa.Self(), class_loader, dex_file, |
| 1828 | class_def); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1829 | } |
| 1830 | ClassDataItemIterator it(dex_file, class_data); |
| 1831 | // Skip fields |
| 1832 | while (it.HasNextStaticField()) { |
| 1833 | it.Next(); |
| 1834 | } |
| 1835 | while (it.HasNextInstanceField()) { |
| 1836 | it.Next(); |
| 1837 | } |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1838 | CompilerDriver* driver = manager->GetCompiler(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1839 | // Compile direct methods |
| 1840 | int64_t previous_direct_method_idx = -1; |
| 1841 | while (it.HasNextDirectMethod()) { |
| 1842 | uint32_t method_idx = it.GetMemberIndex(); |
| 1843 | if (method_idx == previous_direct_method_idx) { |
| 1844 | // smali can create dex files with two encoded_methods sharing the same method_idx |
| 1845 | // http://code.google.com/p/smali/issues/detail?id=119 |
| 1846 | it.Next(); |
| 1847 | continue; |
| 1848 | } |
| 1849 | previous_direct_method_idx = method_idx; |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1850 | driver->CompileMethod(it.GetMethodCodeItem(), it.GetMemberAccessFlags(), |
| 1851 | it.GetMethodInvokeType(class_def), class_def_index, |
| 1852 | method_idx, jclass_loader, dex_file, dex_to_dex_compilation_level); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1853 | it.Next(); |
| 1854 | } |
| 1855 | // Compile virtual methods |
| 1856 | int64_t previous_virtual_method_idx = -1; |
| 1857 | while (it.HasNextVirtualMethod()) { |
| 1858 | uint32_t method_idx = it.GetMemberIndex(); |
| 1859 | if (method_idx == previous_virtual_method_idx) { |
| 1860 | // smali can create dex files with two encoded_methods sharing the same method_idx |
| 1861 | // http://code.google.com/p/smali/issues/detail?id=119 |
| 1862 | it.Next(); |
| 1863 | continue; |
| 1864 | } |
| 1865 | previous_virtual_method_idx = method_idx; |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1866 | driver->CompileMethod(it.GetMethodCodeItem(), it.GetMemberAccessFlags(), |
| 1867 | it.GetMethodInvokeType(class_def), class_def_index, |
| 1868 | method_idx, jclass_loader, dex_file, dex_to_dex_compilation_level); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1869 | it.Next(); |
| 1870 | } |
| 1871 | DCHECK(!it.HasNext()); |
| 1872 | } |
| 1873 | |
| 1874 | void CompilerDriver::CompileDexFile(jobject class_loader, const DexFile& dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1875 | ThreadPool* thread_pool, TimingLogger* timings) { |
| 1876 | timings->NewSplit("Compile Dex File"); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1877 | ParallelCompilationManager context(Runtime::Current()->GetClassLinker(), class_loader, this, |
| 1878 | &dex_file, thread_pool); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1879 | context.ForAll(0, dex_file.NumClassDefs(), CompilerDriver::CompileClass, thread_count_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1880 | } |
| 1881 | |
| 1882 | void CompilerDriver::CompileMethod(const DexFile::CodeItem* code_item, uint32_t access_flags, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1883 | InvokeType invoke_type, uint16_t class_def_idx, |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1884 | uint32_t method_idx, jobject class_loader, |
| 1885 | const DexFile& dex_file, |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 1886 | DexToDexCompilationLevel dex_to_dex_compilation_level) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1887 | CompiledMethod* compiled_method = NULL; |
| 1888 | uint64_t start_ns = NanoTime(); |
| 1889 | |
| 1890 | if ((access_flags & kAccNative) != 0) { |
Ian Rogers | 0188ab7 | 2014-03-17 16:51:53 -0700 | [diff] [blame] | 1891 | // Are we interpreting only and have support for generic JNI down calls? |
Jeff Hao | 4a200f5 | 2014-04-01 14:58:49 -0700 | [diff] [blame] | 1892 | if (!compiler_options_->IsCompilationEnabled() && |
Stuart Monteith | b95a534 | 2014-03-12 13:32:32 +0000 | [diff] [blame] | 1893 | (instruction_set_ == kX86_64 || instruction_set_ == kArm64)) { |
Ian Rogers | 5b27149 | 2014-03-14 13:20:26 -0700 | [diff] [blame] | 1894 | // Leaving this empty will trigger the generic JNI version |
| 1895 | } else { |
Ian Rogers | 72d3262 | 2014-05-06 16:20:11 -0700 | [diff] [blame] | 1896 | compiled_method = compiler_->JniCompile(access_flags, method_idx, dex_file); |
Ian Rogers | 5b27149 | 2014-03-14 13:20:26 -0700 | [diff] [blame] | 1897 | CHECK(compiled_method != NULL); |
| 1898 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1899 | } else if ((access_flags & kAccAbstract) != 0) { |
| 1900 | } else { |
Dragos Sbirlea | 90af14d | 2013-08-15 17:50:16 -0700 | [diff] [blame] | 1901 | MethodReference method_ref(&dex_file, method_idx); |
Brian Carlstrom | 6449c62 | 2014-02-10 23:48:36 -0800 | [diff] [blame] | 1902 | bool compile = verification_results_->IsCandidateForCompilation(method_ref, access_flags); |
Sebastien Hertz | 4d4adb1 | 2013-07-24 16:14:19 +0200 | [diff] [blame] | 1903 | if (compile) { |
buzbee | a024a06 | 2013-07-31 10:47:37 -0700 | [diff] [blame] | 1904 | // NOTE: if compiler declines to compile this method, it will return NULL. |
Ian Rogers | 72d3262 | 2014-05-06 16:20:11 -0700 | [diff] [blame] | 1905 | compiled_method = compiler_->Compile(code_item, access_flags, invoke_type, class_def_idx, |
| 1906 | method_idx, class_loader, dex_file); |
Sebastien Hertz | 17965ed | 2014-04-04 15:59:53 +0200 | [diff] [blame] | 1907 | } |
| 1908 | if (compiled_method == nullptr && dex_to_dex_compilation_level != kDontDexToDexCompile) { |
| 1909 | // TODO: add a command-line option to disable DEX-to-DEX compilation ? |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 1910 | (*dex_to_dex_compiler_)(*this, code_item, access_flags, |
| 1911 | invoke_type, class_def_idx, |
| 1912 | method_idx, class_loader, dex_file, |
| 1913 | dex_to_dex_compilation_level); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1914 | } |
| 1915 | } |
| 1916 | uint64_t duration_ns = NanoTime() - start_ns; |
Nicolas Geoffray | b34f69a | 2014-03-07 15:28:39 +0000 | [diff] [blame] | 1917 | if (duration_ns > MsToNs(compiler_->GetMaximumCompilationTimeBeforeWarning())) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1918 | LOG(WARNING) << "Compilation of " << PrettyMethod(method_idx, dex_file) |
| 1919 | << " took " << PrettyDuration(duration_ns); |
| 1920 | } |
| 1921 | |
| 1922 | Thread* self = Thread::Current(); |
| 1923 | if (compiled_method != NULL) { |
| 1924 | MethodReference ref(&dex_file, method_idx); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1925 | DCHECK(GetCompiledMethod(ref) == NULL) << PrettyMethod(method_idx, dex_file); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1926 | { |
| 1927 | MutexLock mu(self, compiled_methods_lock_); |
| 1928 | compiled_methods_.Put(ref, compiled_method); |
| 1929 | } |
| 1930 | DCHECK(GetCompiledMethod(ref) != NULL) << PrettyMethod(method_idx, dex_file); |
| 1931 | } |
| 1932 | |
| 1933 | if (self->IsExceptionPending()) { |
| 1934 | ScopedObjectAccess soa(self); |
| 1935 | LOG(FATAL) << "Unexpected exception compiling: " << PrettyMethod(method_idx, dex_file) << "\n" |
| 1936 | << self->GetException(NULL)->Dump(); |
| 1937 | } |
| 1938 | } |
| 1939 | |
| 1940 | CompiledClass* CompilerDriver::GetCompiledClass(ClassReference ref) const { |
| 1941 | MutexLock mu(Thread::Current(), compiled_classes_lock_); |
| 1942 | ClassTable::const_iterator it = compiled_classes_.find(ref); |
| 1943 | if (it == compiled_classes_.end()) { |
| 1944 | return NULL; |
| 1945 | } |
| 1946 | CHECK(it->second != NULL); |
| 1947 | return it->second; |
| 1948 | } |
| 1949 | |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1950 | void CompilerDriver::RecordClassStatus(ClassReference ref, mirror::Class::Status status) { |
| 1951 | MutexLock mu(Thread::Current(), compiled_classes_lock_); |
| 1952 | auto it = compiled_classes_.find(ref); |
| 1953 | if (it == compiled_classes_.end() || it->second->GetStatus() != status) { |
| 1954 | // An entry doesn't exist or the status is lower than the new status. |
| 1955 | if (it != compiled_classes_.end()) { |
| 1956 | CHECK_GT(status, it->second->GetStatus()); |
| 1957 | delete it->second; |
| 1958 | } |
| 1959 | switch (status) { |
| 1960 | case mirror::Class::kStatusNotReady: |
| 1961 | case mirror::Class::kStatusError: |
| 1962 | case mirror::Class::kStatusRetryVerificationAtRuntime: |
| 1963 | case mirror::Class::kStatusVerified: |
| 1964 | case mirror::Class::kStatusInitialized: |
| 1965 | break; // Expected states. |
| 1966 | default: |
| 1967 | LOG(FATAL) << "Unexpected class status for class " |
| 1968 | << PrettyDescriptor(ref.first->GetClassDescriptor(ref.first->GetClassDef(ref.second))) |
| 1969 | << " of " << status; |
| 1970 | } |
| 1971 | CompiledClass* compiled_class = new CompiledClass(status); |
| 1972 | compiled_classes_.Overwrite(ref, compiled_class); |
| 1973 | } |
| 1974 | } |
| 1975 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1976 | CompiledMethod* CompilerDriver::GetCompiledMethod(MethodReference ref) const { |
| 1977 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
| 1978 | MethodTable::const_iterator it = compiled_methods_.find(ref); |
| 1979 | if (it == compiled_methods_.end()) { |
| 1980 | return NULL; |
| 1981 | } |
| 1982 | CHECK(it->second != NULL); |
| 1983 | return it->second; |
| 1984 | } |
| 1985 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1986 | void CompilerDriver::AddRequiresConstructorBarrier(Thread* self, const DexFile* dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1987 | uint16_t class_def_index) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1988 | WriterMutexLock mu(self, freezing_constructor_lock_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1989 | freezing_constructor_classes_.insert(ClassReference(dex_file, class_def_index)); |
| 1990 | } |
| 1991 | |
| 1992 | bool CompilerDriver::RequiresConstructorBarrier(Thread* self, const DexFile* dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1993 | uint16_t class_def_index) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1994 | ReaderMutexLock mu(self, freezing_constructor_lock_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1995 | return freezing_constructor_classes_.count(ClassReference(dex_file, class_def_index)) != 0; |
| 1996 | } |
| 1997 | |
| 1998 | bool CompilerDriver::WriteElf(const std::string& android_root, |
| 1999 | bool is_host, |
| 2000 | const std::vector<const art::DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2001 | OatWriter* oat_writer, |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2002 | art::File* file) |
| 2003 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 72d3262 | 2014-05-06 16:20:11 -0700 | [diff] [blame] | 2004 | return compiler_->WriteElf(file, oat_writer, dex_files, android_root, is_host); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2005 | } |
| 2006 | void CompilerDriver::InstructionSetToLLVMTarget(InstructionSet instruction_set, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2007 | std::string* target_triple, |
| 2008 | std::string* target_cpu, |
| 2009 | std::string* target_attr) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2010 | switch (instruction_set) { |
| 2011 | case kThumb2: |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2012 | *target_triple = "thumb-none-linux-gnueabi"; |
| 2013 | *target_cpu = "cortex-a9"; |
| 2014 | *target_attr = "+thumb2,+neon,+neonfp,+vfp3,+db"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2015 | break; |
| 2016 | |
| 2017 | case kArm: |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2018 | *target_triple = "armv7-none-linux-gnueabi"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2019 | // TODO: Fix for Nexus S. |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2020 | *target_cpu = "cortex-a9"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2021 | // TODO: Fix for Xoom. |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2022 | *target_attr = "+v7,+neon,+neonfp,+vfp3,+db"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2023 | break; |
| 2024 | |
| 2025 | case kX86: |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2026 | *target_triple = "i386-pc-linux-gnu"; |
| 2027 | *target_attr = ""; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2028 | break; |
| 2029 | |
Dmitry Petrochenko | 6a58cb1 | 2014-04-02 17:27:59 +0700 | [diff] [blame] | 2030 | case kX86_64: |
| 2031 | *target_triple = "x86_64-pc-linux-gnu"; |
| 2032 | *target_attr = ""; |
| 2033 | break; |
| 2034 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2035 | case kMips: |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2036 | *target_triple = "mipsel-unknown-linux"; |
| 2037 | *target_attr = "mips32r2"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2038 | break; |
| 2039 | |
| 2040 | default: |
| 2041 | LOG(FATAL) << "Unknown instruction set: " << instruction_set; |
| 2042 | } |
| 2043 | } |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 2044 | |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 2045 | bool CompilerDriver::SkipCompilation(const std::string& method_name) { |
| 2046 | if (!profile_ok_) { |
Dave Allison | 644789f | 2014-04-10 13:06:10 -0700 | [diff] [blame] | 2047 | return false; |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 2048 | } |
Calin Juravle | 04ff226 | 2014-04-02 19:08:47 +0100 | [diff] [blame] | 2049 | // Methods that comprise topKPercentThreshold % of the total samples will be compiled. |
| 2050 | double topKPercentThreshold = 90.0; |
| 2051 | #ifdef HAVE_ANDROID_OS |
| 2052 | char buf[PROP_VALUE_MAX]; |
| 2053 | property_get("dalvik.vm.profile.compile_thr", buf, "90.0"); |
| 2054 | topKPercentThreshold = strtod(buf, nullptr); |
| 2055 | #endif |
| 2056 | // Test for reasonable thresholds. |
| 2057 | if (topKPercentThreshold < 10.0 || topKPercentThreshold > 90.0) { |
| 2058 | topKPercentThreshold = 90.0; |
| 2059 | } |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 2060 | |
| 2061 | // First find the method in the profile map. |
| 2062 | ProfileMap::iterator i = profile_map_.find(method_name); |
| 2063 | if (i == profile_map_.end()) { |
| 2064 | // Not in profile, no information can be determined. |
| 2065 | VLOG(compiler) << "not compiling " << method_name << " because it's not in the profile"; |
| 2066 | return true; |
| 2067 | } |
| 2068 | const ProfileData& data = i->second; |
Calin Juravle | 04ff226 | 2014-04-02 19:08:47 +0100 | [diff] [blame] | 2069 | |
Calin Juravle | f6a4cee | 2014-04-02 17:03:08 +0100 | [diff] [blame] | 2070 | // Compare against the start of the topK percentage bucket just in case the threshold |
Calin Juravle | 04ff226 | 2014-04-02 19:08:47 +0100 | [diff] [blame] | 2071 | // falls inside a bucket. |
| 2072 | bool compile = data.GetTopKUsedPercentage() - data.GetUsedPercent() <= topKPercentThreshold; |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 2073 | if (compile) { |
Calin Juravle | f6a4cee | 2014-04-02 17:03:08 +0100 | [diff] [blame] | 2074 | LOG(INFO) << "compiling method " << method_name << " because its usage is part of top " |
| 2075 | << data.GetTopKUsedPercentage() << "% with a percent of " << data.GetUsedPercent() << "%"; |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 2076 | } else { |
Calin Juravle | 04ff226 | 2014-04-02 19:08:47 +0100 | [diff] [blame] | 2077 | VLOG(compiler) << "not compiling method " << method_name << " because it's not part of leading " |
| 2078 | << topKPercentThreshold << "% samples)"; |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 2079 | } |
| 2080 | return !compile; |
| 2081 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2082 | } // namespace art |