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> |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 24 | #include <fstream> |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 25 | |
| 26 | #include "base/stl_util.h" |
| 27 | #include "base/timing_logger.h" |
| 28 | #include "class_linker.h" |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 29 | #include "compiler_backend.h" |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 30 | #include "compiler_driver-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 31 | #include "dex_compilation_unit.h" |
| 32 | #include "dex_file-inl.h" |
Vladimir Marko | c7f8320 | 2014-01-24 17:55:18 +0000 | [diff] [blame] | 33 | #include "dex/verification_results.h" |
Vladimir Marko | 2730db0 | 2014-01-27 11:15:17 +0000 | [diff] [blame] | 34 | #include "dex/verified_method.h" |
Vladimir Marko | 2bc4780 | 2014-02-10 09:43:07 +0000 | [diff] [blame] | 35 | #include "dex/quick/dex_file_method_inliner.h" |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 36 | #include "driver/compiler_options.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 37 | #include "jni_internal.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 38 | #include "object_utils.h" |
| 39 | #include "runtime.h" |
| 40 | #include "gc/accounting/card_table-inl.h" |
| 41 | #include "gc/accounting/heap_bitmap.h" |
| 42 | #include "gc/space/space.h" |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 43 | #include "mirror/art_field-inl.h" |
| 44 | #include "mirror/art_method-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 45 | #include "mirror/class_loader.h" |
| 46 | #include "mirror/class-inl.h" |
| 47 | #include "mirror/dex_cache-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 48 | #include "mirror/object-inl.h" |
| 49 | #include "mirror/object_array-inl.h" |
| 50 | #include "mirror/throwable.h" |
| 51 | #include "scoped_thread_state_change.h" |
| 52 | #include "ScopedLocalRef.h" |
Mathieu Chartier | c645f1d | 2014-03-06 18:11:53 -0800 | [diff] [blame] | 53 | #include "sirt_ref-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 54 | #include "thread.h" |
| 55 | #include "thread_pool.h" |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 56 | #include "trampolines/trampoline_compiler.h" |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 57 | #include "transaction.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 58 | #include "verifier/method_verifier.h" |
Vladimir Marko | 2bc4780 | 2014-02-10 09:43:07 +0000 | [diff] [blame] | 59 | #include "verifier/method_verifier-inl.h" |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 60 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 61 | namespace art { |
| 62 | |
| 63 | static double Percentage(size_t x, size_t y) { |
| 64 | return 100.0 * (static_cast<double>(x)) / (static_cast<double>(x + y)); |
| 65 | } |
| 66 | |
| 67 | static void DumpStat(size_t x, size_t y, const char* str) { |
| 68 | if (x == 0 && y == 0) { |
| 69 | return; |
| 70 | } |
Ian Rogers | e732ef1 | 2013-10-09 15:22:24 -0700 | [diff] [blame] | 71 | LOG(INFO) << Percentage(x, y) << "% of " << str << " for " << (x + y) << " cases"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 72 | } |
| 73 | |
| 74 | class AOTCompilationStats { |
| 75 | public: |
| 76 | AOTCompilationStats() |
| 77 | : stats_lock_("AOT compilation statistics lock"), |
| 78 | types_in_dex_cache_(0), types_not_in_dex_cache_(0), |
| 79 | strings_in_dex_cache_(0), strings_not_in_dex_cache_(0), |
| 80 | resolved_types_(0), unresolved_types_(0), |
| 81 | resolved_instance_fields_(0), unresolved_instance_fields_(0), |
| 82 | resolved_local_static_fields_(0), resolved_static_fields_(0), unresolved_static_fields_(0), |
| 83 | type_based_devirtualization_(0), |
| 84 | safe_casts_(0), not_safe_casts_(0) { |
| 85 | for (size_t i = 0; i <= kMaxInvokeType; i++) { |
| 86 | resolved_methods_[i] = 0; |
| 87 | unresolved_methods_[i] = 0; |
| 88 | virtual_made_direct_[i] = 0; |
| 89 | direct_calls_to_boot_[i] = 0; |
| 90 | direct_methods_to_boot_[i] = 0; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | void Dump() { |
| 95 | DumpStat(types_in_dex_cache_, types_not_in_dex_cache_, "types known to be in dex cache"); |
| 96 | DumpStat(strings_in_dex_cache_, strings_not_in_dex_cache_, "strings known to be in dex cache"); |
| 97 | DumpStat(resolved_types_, unresolved_types_, "types resolved"); |
| 98 | DumpStat(resolved_instance_fields_, unresolved_instance_fields_, "instance fields resolved"); |
| 99 | DumpStat(resolved_local_static_fields_ + resolved_static_fields_, unresolved_static_fields_, |
| 100 | "static fields resolved"); |
| 101 | DumpStat(resolved_local_static_fields_, resolved_static_fields_ + unresolved_static_fields_, |
| 102 | "static fields local to a class"); |
| 103 | DumpStat(safe_casts_, not_safe_casts_, "check-casts removed based on type information"); |
| 104 | // Note, the code below subtracts the stat value so that when added to the stat value we have |
| 105 | // 100% of samples. TODO: clean this up. |
| 106 | DumpStat(type_based_devirtualization_, |
| 107 | resolved_methods_[kVirtual] + unresolved_methods_[kVirtual] + |
| 108 | resolved_methods_[kInterface] + unresolved_methods_[kInterface] - |
| 109 | type_based_devirtualization_, |
| 110 | "virtual/interface calls made direct based on type information"); |
| 111 | |
| 112 | for (size_t i = 0; i <= kMaxInvokeType; i++) { |
| 113 | std::ostringstream oss; |
| 114 | oss << static_cast<InvokeType>(i) << " methods were AOT resolved"; |
| 115 | DumpStat(resolved_methods_[i], unresolved_methods_[i], oss.str().c_str()); |
| 116 | if (virtual_made_direct_[i] > 0) { |
| 117 | std::ostringstream oss2; |
| 118 | oss2 << static_cast<InvokeType>(i) << " methods made direct"; |
| 119 | DumpStat(virtual_made_direct_[i], |
| 120 | resolved_methods_[i] + unresolved_methods_[i] - virtual_made_direct_[i], |
| 121 | oss2.str().c_str()); |
| 122 | } |
| 123 | if (direct_calls_to_boot_[i] > 0) { |
| 124 | std::ostringstream oss2; |
| 125 | oss2 << static_cast<InvokeType>(i) << " method calls are direct into boot"; |
| 126 | DumpStat(direct_calls_to_boot_[i], |
| 127 | resolved_methods_[i] + unresolved_methods_[i] - direct_calls_to_boot_[i], |
| 128 | oss2.str().c_str()); |
| 129 | } |
| 130 | if (direct_methods_to_boot_[i] > 0) { |
| 131 | std::ostringstream oss2; |
| 132 | oss2 << static_cast<InvokeType>(i) << " method calls have methods in boot"; |
| 133 | DumpStat(direct_methods_to_boot_[i], |
| 134 | resolved_methods_[i] + unresolved_methods_[i] - direct_methods_to_boot_[i], |
| 135 | oss2.str().c_str()); |
| 136 | } |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | // Allow lossy statistics in non-debug builds. |
| 141 | #ifndef NDEBUG |
| 142 | #define STATS_LOCK() MutexLock mu(Thread::Current(), stats_lock_) |
| 143 | #else |
| 144 | #define STATS_LOCK() |
| 145 | #endif |
| 146 | |
| 147 | void TypeInDexCache() { |
| 148 | STATS_LOCK(); |
| 149 | types_in_dex_cache_++; |
| 150 | } |
| 151 | |
| 152 | void TypeNotInDexCache() { |
| 153 | STATS_LOCK(); |
| 154 | types_not_in_dex_cache_++; |
| 155 | } |
| 156 | |
| 157 | void StringInDexCache() { |
| 158 | STATS_LOCK(); |
| 159 | strings_in_dex_cache_++; |
| 160 | } |
| 161 | |
| 162 | void StringNotInDexCache() { |
| 163 | STATS_LOCK(); |
| 164 | strings_not_in_dex_cache_++; |
| 165 | } |
| 166 | |
| 167 | void TypeDoesntNeedAccessCheck() { |
| 168 | STATS_LOCK(); |
| 169 | resolved_types_++; |
| 170 | } |
| 171 | |
| 172 | void TypeNeedsAccessCheck() { |
| 173 | STATS_LOCK(); |
| 174 | unresolved_types_++; |
| 175 | } |
| 176 | |
| 177 | void ResolvedInstanceField() { |
| 178 | STATS_LOCK(); |
| 179 | resolved_instance_fields_++; |
| 180 | } |
| 181 | |
| 182 | void UnresolvedInstanceField() { |
| 183 | STATS_LOCK(); |
| 184 | unresolved_instance_fields_++; |
| 185 | } |
| 186 | |
| 187 | void ResolvedLocalStaticField() { |
| 188 | STATS_LOCK(); |
| 189 | resolved_local_static_fields_++; |
| 190 | } |
| 191 | |
| 192 | void ResolvedStaticField() { |
| 193 | STATS_LOCK(); |
| 194 | resolved_static_fields_++; |
| 195 | } |
| 196 | |
| 197 | void UnresolvedStaticField() { |
| 198 | STATS_LOCK(); |
| 199 | unresolved_static_fields_++; |
| 200 | } |
| 201 | |
| 202 | // Indicate that type information from the verifier led to devirtualization. |
| 203 | void PreciseTypeDevirtualization() { |
| 204 | STATS_LOCK(); |
| 205 | type_based_devirtualization_++; |
| 206 | } |
| 207 | |
| 208 | // Indicate that a method of the given type was resolved at compile time. |
| 209 | void ResolvedMethod(InvokeType type) { |
| 210 | DCHECK_LE(type, kMaxInvokeType); |
| 211 | STATS_LOCK(); |
| 212 | resolved_methods_[type]++; |
| 213 | } |
| 214 | |
| 215 | // Indicate that a method of the given type was unresolved at compile time as it was in an |
| 216 | // unknown dex file. |
| 217 | void UnresolvedMethod(InvokeType type) { |
| 218 | DCHECK_LE(type, kMaxInvokeType); |
| 219 | STATS_LOCK(); |
| 220 | unresolved_methods_[type]++; |
| 221 | } |
| 222 | |
| 223 | // Indicate that a type of virtual method dispatch has been converted into a direct method |
| 224 | // dispatch. |
| 225 | void VirtualMadeDirect(InvokeType type) { |
| 226 | DCHECK(type == kVirtual || type == kInterface || type == kSuper); |
| 227 | STATS_LOCK(); |
| 228 | virtual_made_direct_[type]++; |
| 229 | } |
| 230 | |
| 231 | // Indicate that a method of the given type was able to call directly into boot. |
| 232 | void DirectCallsToBoot(InvokeType type) { |
| 233 | DCHECK_LE(type, kMaxInvokeType); |
| 234 | STATS_LOCK(); |
| 235 | direct_calls_to_boot_[type]++; |
| 236 | } |
| 237 | |
| 238 | // Indicate that a method of the given type was able to be resolved directly from boot. |
| 239 | void DirectMethodsToBoot(InvokeType type) { |
| 240 | DCHECK_LE(type, kMaxInvokeType); |
| 241 | STATS_LOCK(); |
| 242 | direct_methods_to_boot_[type]++; |
| 243 | } |
| 244 | |
| 245 | // A check-cast could be eliminated due to verifier type analysis. |
| 246 | void SafeCast() { |
| 247 | STATS_LOCK(); |
| 248 | safe_casts_++; |
| 249 | } |
| 250 | |
| 251 | // A check-cast couldn't be eliminated due to verifier type analysis. |
| 252 | void NotASafeCast() { |
| 253 | STATS_LOCK(); |
| 254 | not_safe_casts_++; |
| 255 | } |
| 256 | |
| 257 | private: |
| 258 | Mutex stats_lock_; |
| 259 | |
| 260 | size_t types_in_dex_cache_; |
| 261 | size_t types_not_in_dex_cache_; |
| 262 | |
| 263 | size_t strings_in_dex_cache_; |
| 264 | size_t strings_not_in_dex_cache_; |
| 265 | |
| 266 | size_t resolved_types_; |
| 267 | size_t unresolved_types_; |
| 268 | |
| 269 | size_t resolved_instance_fields_; |
| 270 | size_t unresolved_instance_fields_; |
| 271 | |
| 272 | size_t resolved_local_static_fields_; |
| 273 | size_t resolved_static_fields_; |
| 274 | size_t unresolved_static_fields_; |
| 275 | // Type based devirtualization for invoke interface and virtual. |
| 276 | size_t type_based_devirtualization_; |
| 277 | |
| 278 | size_t resolved_methods_[kMaxInvokeType + 1]; |
| 279 | size_t unresolved_methods_[kMaxInvokeType + 1]; |
| 280 | size_t virtual_made_direct_[kMaxInvokeType + 1]; |
| 281 | size_t direct_calls_to_boot_[kMaxInvokeType + 1]; |
| 282 | size_t direct_methods_to_boot_[kMaxInvokeType + 1]; |
| 283 | |
| 284 | size_t safe_casts_; |
| 285 | size_t not_safe_casts_; |
| 286 | |
| 287 | DISALLOW_COPY_AND_ASSIGN(AOTCompilationStats); |
| 288 | }; |
| 289 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 290 | |
| 291 | extern "C" art::CompiledMethod* ArtCompileDEX(art::CompilerDriver& compiler, |
| 292 | const art::DexFile::CodeItem* code_item, |
| 293 | uint32_t access_flags, |
| 294 | art::InvokeType invoke_type, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 295 | uint16_t class_def_idx, |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 296 | uint32_t method_idx, |
| 297 | jobject class_loader, |
| 298 | const art::DexFile& dex_file); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 299 | |
Brian Carlstrom | 6449c62 | 2014-02-10 23:48:36 -0800 | [diff] [blame] | 300 | CompilerDriver::CompilerDriver(const CompilerOptions* compiler_options, |
| 301 | VerificationResults* verification_results, |
Vladimir Marko | 5816ed4 | 2013-11-27 17:04:20 +0000 | [diff] [blame] | 302 | DexFileToMethodInlinerMap* method_inliner_map, |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 303 | CompilerBackend::Kind compiler_backend_kind, |
| 304 | InstructionSet instruction_set, |
Dave Allison | 7020278 | 2013-10-22 17:52:19 -0700 | [diff] [blame] | 305 | InstructionSetFeatures instruction_set_features, |
buzbee | a024a06 | 2013-07-31 10:47:37 -0700 | [diff] [blame] | 306 | bool image, DescriptorSet* image_classes, size_t thread_count, |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 307 | bool dump_stats, bool dump_passes, CumulativeLogger* timer, |
| 308 | std::string profile_file) |
| 309 | : profile_ok_(false), compiler_options_(compiler_options), |
Brian Carlstrom | 6449c62 | 2014-02-10 23:48:36 -0800 | [diff] [blame] | 310 | verification_results_(verification_results), |
Vladimir Marko | 5816ed4 | 2013-11-27 17:04:20 +0000 | [diff] [blame] | 311 | method_inliner_map_(method_inliner_map), |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 312 | compiler_backend_(CompilerBackend::Create(compiler_backend_kind)), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 313 | instruction_set_(instruction_set), |
Dave Allison | 7020278 | 2013-10-22 17:52:19 -0700 | [diff] [blame] | 314 | instruction_set_features_(instruction_set_features), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 315 | freezing_constructor_lock_("freezing constructor lock"), |
| 316 | compiled_classes_lock_("compiled classes lock"), |
| 317 | compiled_methods_lock_("compiled method lock"), |
| 318 | image_(image), |
| 319 | image_classes_(image_classes), |
| 320 | thread_count_(thread_count), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 321 | start_ns_(0), |
| 322 | stats_(new AOTCompilationStats), |
| 323 | dump_stats_(dump_stats), |
Nicolas Geoffray | ea3fa0b | 2014-02-10 11:59:41 +0000 | [diff] [blame] | 324 | dump_passes_(dump_passes), |
| 325 | timings_logger_(timer), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 326 | compiler_library_(NULL), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 327 | compiler_context_(NULL), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 328 | compiler_enable_auto_elf_loading_(NULL), |
| 329 | compiler_get_method_code_addr_(NULL), |
Mark Mendell | 55d0eac | 2014-02-06 11:02:52 -0800 | [diff] [blame] | 330 | support_boot_image_fixup_(instruction_set != kMips), |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 331 | cfi_info_(nullptr), |
Ian Rogers | d133b97 | 2013-09-05 11:01:30 -0700 | [diff] [blame] | 332 | dedupe_code_("dedupe code"), |
| 333 | dedupe_mapping_table_("dedupe mapping table"), |
| 334 | dedupe_vmap_table_("dedupe vmap table"), |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 335 | dedupe_gc_map_("dedupe gc map"), |
| 336 | dedupe_cfi_info_("dedupe cfi info") { |
Brian Carlstrom | 6449c62 | 2014-02-10 23:48:36 -0800 | [diff] [blame] | 337 | DCHECK(compiler_options_ != nullptr); |
| 338 | DCHECK(verification_results_ != nullptr); |
| 339 | DCHECK(method_inliner_map_ != nullptr); |
Brian Carlstrom | 2ce745c | 2013-07-17 17:44:30 -0700 | [diff] [blame] | 340 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 341 | CHECK_PTHREAD_CALL(pthread_key_create, (&tls_key_, NULL), "compiler tls key"); |
| 342 | |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 343 | // Read the profile file if one is provided. |
| 344 | if (profile_file != "") { |
| 345 | profile_ok_ = ReadProfile(profile_file); |
| 346 | } |
| 347 | |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 348 | dex_to_dex_compiler_ = reinterpret_cast<DexToDexCompilerFn>(ArtCompileDEX); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 349 | |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 350 | compiler_backend_->Init(*this); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 351 | |
| 352 | CHECK(!Runtime::Current()->IsStarted()); |
| 353 | if (!image_) { |
| 354 | CHECK(image_classes_.get() == NULL); |
| 355 | } |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 356 | |
| 357 | // Are we generating CFI information? |
| 358 | if (compiler_options->GetGenerateGDBInformation()) { |
| 359 | cfi_info_.reset(compiler_backend_->GetCallFrameInformationInitialization(*this)); |
| 360 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 361 | } |
| 362 | |
Mathieu Chartier | 193bad9 | 2013-08-29 18:46:00 -0700 | [diff] [blame] | 363 | std::vector<uint8_t>* CompilerDriver::DeduplicateCode(const std::vector<uint8_t>& code) { |
| 364 | return dedupe_code_.Add(Thread::Current(), code); |
| 365 | } |
| 366 | |
| 367 | std::vector<uint8_t>* CompilerDriver::DeduplicateMappingTable(const std::vector<uint8_t>& code) { |
| 368 | return dedupe_mapping_table_.Add(Thread::Current(), code); |
| 369 | } |
| 370 | |
| 371 | std::vector<uint8_t>* CompilerDriver::DeduplicateVMapTable(const std::vector<uint8_t>& code) { |
| 372 | return dedupe_vmap_table_.Add(Thread::Current(), code); |
| 373 | } |
| 374 | |
| 375 | std::vector<uint8_t>* CompilerDriver::DeduplicateGCMap(const std::vector<uint8_t>& code) { |
| 376 | return dedupe_gc_map_.Add(Thread::Current(), code); |
| 377 | } |
| 378 | |
Mark Mendell | ae9fd93 | 2014-02-10 16:14:35 -0800 | [diff] [blame] | 379 | std::vector<uint8_t>* CompilerDriver::DeduplicateCFIInfo(const std::vector<uint8_t>* cfi_info) { |
| 380 | if (cfi_info == nullptr) { |
| 381 | return nullptr; |
| 382 | } |
| 383 | return dedupe_cfi_info_.Add(Thread::Current(), *cfi_info); |
| 384 | } |
| 385 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 386 | CompilerDriver::~CompilerDriver() { |
| 387 | Thread* self = Thread::Current(); |
| 388 | { |
| 389 | MutexLock mu(self, compiled_classes_lock_); |
| 390 | STLDeleteValues(&compiled_classes_); |
| 391 | } |
| 392 | { |
| 393 | MutexLock mu(self, compiled_methods_lock_); |
| 394 | STLDeleteValues(&compiled_methods_); |
| 395 | } |
| 396 | { |
| 397 | MutexLock mu(self, compiled_methods_lock_); |
| 398 | STLDeleteElements(&code_to_patch_); |
| 399 | } |
| 400 | { |
| 401 | MutexLock mu(self, compiled_methods_lock_); |
| 402 | STLDeleteElements(&methods_to_patch_); |
| 403 | } |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 404 | { |
| 405 | MutexLock mu(self, compiled_methods_lock_); |
| 406 | STLDeleteElements(&classes_to_patch_); |
| 407 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 408 | CHECK_PTHREAD_CALL(pthread_key_delete, (tls_key_), "delete tls key"); |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 409 | compiler_backend_->UnInit(*this); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | CompilerTls* CompilerDriver::GetTls() { |
| 413 | // Lazily create thread-local storage |
| 414 | CompilerTls* res = static_cast<CompilerTls*>(pthread_getspecific(tls_key_)); |
| 415 | if (res == NULL) { |
| 416 | res = new CompilerTls(); |
| 417 | CHECK_PTHREAD_CALL(pthread_setspecific, (tls_key_, res), "compiler tls"); |
| 418 | } |
| 419 | return res; |
| 420 | } |
| 421 | |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 422 | const std::vector<uint8_t>* CompilerDriver::CreateInterpreterToInterpreterBridge() const { |
| 423 | return CreateTrampoline(instruction_set_, kInterpreterAbi, |
| 424 | INTERPRETER_ENTRYPOINT_OFFSET(pInterpreterToInterpreterBridge)); |
| 425 | } |
| 426 | |
| 427 | const std::vector<uint8_t>* CompilerDriver::CreateInterpreterToCompiledCodeBridge() const { |
| 428 | return CreateTrampoline(instruction_set_, kInterpreterAbi, |
| 429 | INTERPRETER_ENTRYPOINT_OFFSET(pInterpreterToCompiledCodeBridge)); |
| 430 | } |
| 431 | |
| 432 | const std::vector<uint8_t>* CompilerDriver::CreateJniDlsymLookup() const { |
| 433 | return CreateTrampoline(instruction_set_, kJniAbi, JNI_ENTRYPOINT_OFFSET(pDlsymLookup)); |
| 434 | } |
| 435 | |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 436 | const std::vector<uint8_t>* CompilerDriver::CreatePortableImtConflictTrampoline() const { |
| 437 | return CreateTrampoline(instruction_set_, kPortableAbi, |
| 438 | PORTABLE_ENTRYPOINT_OFFSET(pPortableImtConflictTrampoline)); |
| 439 | } |
| 440 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 441 | const std::vector<uint8_t>* CompilerDriver::CreatePortableResolutionTrampoline() const { |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 442 | return CreateTrampoline(instruction_set_, kPortableAbi, |
| 443 | PORTABLE_ENTRYPOINT_OFFSET(pPortableResolutionTrampoline)); |
| 444 | } |
| 445 | |
| 446 | const std::vector<uint8_t>* CompilerDriver::CreatePortableToInterpreterBridge() const { |
| 447 | return CreateTrampoline(instruction_set_, kPortableAbi, |
| 448 | PORTABLE_ENTRYPOINT_OFFSET(pPortableToInterpreterBridge)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 449 | } |
| 450 | |
Andreas Gampe | 2da8823 | 2014-02-27 12:26:20 -0800 | [diff] [blame] | 451 | const std::vector<uint8_t>* CompilerDriver::CreateQuickGenericJniTrampoline() const { |
| 452 | return CreateTrampoline(instruction_set_, kQuickAbi, |
| 453 | QUICK_ENTRYPOINT_OFFSET(pQuickGenericJniTrampoline)); |
| 454 | } |
| 455 | |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 456 | const std::vector<uint8_t>* CompilerDriver::CreateQuickImtConflictTrampoline() const { |
| 457 | return CreateTrampoline(instruction_set_, kQuickAbi, |
| 458 | QUICK_ENTRYPOINT_OFFSET(pQuickImtConflictTrampoline)); |
| 459 | } |
| 460 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 461 | const std::vector<uint8_t>* CompilerDriver::CreateQuickResolutionTrampoline() const { |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 462 | return CreateTrampoline(instruction_set_, kQuickAbi, |
| 463 | QUICK_ENTRYPOINT_OFFSET(pQuickResolutionTrampoline)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 464 | } |
| 465 | |
Ian Rogers | 848871b | 2013-08-05 10:56:33 -0700 | [diff] [blame] | 466 | const std::vector<uint8_t>* CompilerDriver::CreateQuickToInterpreterBridge() const { |
| 467 | return CreateTrampoline(instruction_set_, kQuickAbi, |
| 468 | QUICK_ENTRYPOINT_OFFSET(pQuickToInterpreterBridge)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 469 | } |
| 470 | |
| 471 | void CompilerDriver::CompileAll(jobject class_loader, |
Brian Carlstrom | 4560248 | 2013-07-21 22:07:55 -0700 | [diff] [blame] | 472 | const std::vector<const DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 473 | TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 474 | DCHECK(!Runtime::Current()->IsStarted()); |
Mathieu Chartier | bcd5e9d | 2013-11-13 14:33:28 -0800 | [diff] [blame] | 475 | 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] | 476 | PreCompile(class_loader, dex_files, thread_pool.get(), timings); |
| 477 | Compile(class_loader, dex_files, thread_pool.get(), timings); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 478 | if (dump_stats_) { |
| 479 | stats_->Dump(); |
| 480 | } |
| 481 | } |
| 482 | |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 483 | static DexToDexCompilationLevel GetDexToDexCompilationlevel( |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 484 | Thread* self, SirtRef<mirror::ClassLoader>& class_loader, const DexFile& dex_file, |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 485 | const DexFile::ClassDef& class_def) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 486 | const char* descriptor = dex_file.GetClassDescriptor(class_def); |
| 487 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 488 | mirror::Class* klass = class_linker->FindClass(self, descriptor, class_loader); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 489 | if (klass == NULL) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 490 | CHECK(self->IsExceptionPending()); |
| 491 | self->ClearException(); |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 492 | return kDontDexToDexCompile; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 493 | } |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 494 | // The verifier can only run on "quick" instructions at runtime (see usage of |
| 495 | // FindAccessedFieldAtDexPc and FindInvokedMethodAtDexPc in ThrowNullPointerExceptionFromDexPC |
| 496 | // function). Since image classes can be verified again while compiling an application, |
| 497 | // we must prevent the DEX-to-DEX compiler from introducing them. |
| 498 | // TODO: find a way to enable "quick" instructions for image classes and remove this check. |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 499 | bool compiling_image_classes = class_loader.get() == nullptr; |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 500 | if (compiling_image_classes) { |
| 501 | return kRequired; |
| 502 | } else if (klass->IsVerified()) { |
| 503 | // Class is verified so we can enable DEX-to-DEX compilation for performance. |
| 504 | return kOptimize; |
| 505 | } else if (klass->IsCompileTimeVerified()) { |
| 506 | // Class verification has soft-failed. Anyway, ensure at least correctness. |
| 507 | DCHECK_EQ(klass->GetStatus(), mirror::Class::kStatusRetryVerificationAtRuntime); |
| 508 | return kRequired; |
| 509 | } else { |
| 510 | // Class verification has failed: do not run DEX-to-DEX compilation. |
| 511 | return kDontDexToDexCompile; |
| 512 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 513 | } |
| 514 | |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 515 | void CompilerDriver::CompileOne(mirror::ArtMethod* method, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 516 | DCHECK(!Runtime::Current()->IsStarted()); |
| 517 | Thread* self = Thread::Current(); |
| 518 | jobject jclass_loader; |
| 519 | const DexFile* dex_file; |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 520 | uint16_t class_def_idx; |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 521 | uint32_t method_idx = method->GetDexMethodIndex(); |
| 522 | uint32_t access_flags = method->GetAccessFlags(); |
| 523 | InvokeType invoke_type = method->GetInvokeType(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 524 | { |
| 525 | ScopedObjectAccessUnchecked soa(self); |
| 526 | ScopedLocalRef<jobject> |
| 527 | local_class_loader(soa.Env(), |
| 528 | soa.AddLocalReference<jobject>(method->GetDeclaringClass()->GetClassLoader())); |
| 529 | jclass_loader = soa.Env()->NewGlobalRef(local_class_loader.get()); |
| 530 | // Find the dex_file |
| 531 | MethodHelper mh(method); |
| 532 | dex_file = &mh.GetDexFile(); |
| 533 | class_def_idx = mh.GetClassDefIndex(); |
| 534 | } |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 535 | const DexFile::CodeItem* code_item = dex_file->GetCodeItem(method->GetCodeItemOffset()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 536 | self->TransitionFromRunnableToSuspended(kNative); |
| 537 | |
| 538 | std::vector<const DexFile*> dex_files; |
| 539 | dex_files.push_back(dex_file); |
| 540 | |
Mathieu Chartier | bcd5e9d | 2013-11-13 14:33:28 -0800 | [diff] [blame] | 541 | UniquePtr<ThreadPool> thread_pool(new ThreadPool("Compiler driver thread pool", 0U)); |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 542 | PreCompile(jclass_loader, dex_files, thread_pool.get(), timings); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 543 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 544 | // Can we run DEX-to-DEX compiler on this class ? |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 545 | DexToDexCompilationLevel dex_to_dex_compilation_level = kDontDexToDexCompile; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 546 | { |
| 547 | ScopedObjectAccess soa(Thread::Current()); |
| 548 | const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_idx); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 549 | SirtRef<mirror::ClassLoader> class_loader(soa.Self(), |
| 550 | soa.Decode<mirror::ClassLoader*>(jclass_loader)); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 551 | dex_to_dex_compilation_level = GetDexToDexCompilationlevel(self, class_loader, *dex_file, |
| 552 | class_def); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 553 | } |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 554 | CompileMethod(code_item, access_flags, invoke_type, class_def_idx, method_idx, jclass_loader, |
| 555 | *dex_file, dex_to_dex_compilation_level); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 556 | |
| 557 | self->GetJniEnv()->DeleteGlobalRef(jclass_loader); |
| 558 | |
| 559 | self->TransitionFromSuspendedToRunnable(); |
| 560 | } |
| 561 | |
| 562 | 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] | 563 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 564 | for (size_t i = 0; i != dex_files.size(); ++i) { |
| 565 | const DexFile* dex_file = dex_files[i]; |
| 566 | CHECK(dex_file != NULL); |
| 567 | ResolveDexFile(class_loader, *dex_file, thread_pool, timings); |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | 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] | 572 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 573 | LoadImageClasses(timings); |
| 574 | |
| 575 | Resolve(class_loader, dex_files, thread_pool, timings); |
| 576 | |
| 577 | Verify(class_loader, dex_files, thread_pool, timings); |
| 578 | |
| 579 | InitializeClasses(class_loader, dex_files, thread_pool, timings); |
| 580 | |
| 581 | UpdateImageClasses(timings); |
| 582 | } |
| 583 | |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 584 | bool CompilerDriver::IsImageClass(const char* descriptor) const { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 585 | if (!IsImage()) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 586 | return true; |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 587 | } else { |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 588 | return image_classes_->find(descriptor) != image_classes_->end(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 589 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | static void ResolveExceptionsForMethod(MethodHelper* mh, |
| 593 | std::set<std::pair<uint16_t, const DexFile*> >& exceptions_to_resolve) |
| 594 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 595 | const DexFile::CodeItem* code_item = mh->GetCodeItem(); |
| 596 | if (code_item == NULL) { |
| 597 | return; // native or abstract method |
| 598 | } |
| 599 | if (code_item->tries_size_ == 0) { |
| 600 | return; // nothing to process |
| 601 | } |
| 602 | const byte* encoded_catch_handler_list = DexFile::GetCatchHandlerData(*code_item, 0); |
| 603 | size_t num_encoded_catch_handlers = DecodeUnsignedLeb128(&encoded_catch_handler_list); |
| 604 | for (size_t i = 0; i < num_encoded_catch_handlers; i++) { |
| 605 | int32_t encoded_catch_handler_size = DecodeSignedLeb128(&encoded_catch_handler_list); |
| 606 | bool has_catch_all = false; |
| 607 | if (encoded_catch_handler_size <= 0) { |
| 608 | encoded_catch_handler_size = -encoded_catch_handler_size; |
| 609 | has_catch_all = true; |
| 610 | } |
| 611 | for (int32_t j = 0; j < encoded_catch_handler_size; j++) { |
| 612 | uint16_t encoded_catch_handler_handlers_type_idx = |
| 613 | DecodeUnsignedLeb128(&encoded_catch_handler_list); |
| 614 | // Add to set of types to resolve if not already in the dex cache resolved types |
| 615 | if (!mh->IsResolvedTypeIdx(encoded_catch_handler_handlers_type_idx)) { |
| 616 | exceptions_to_resolve.insert( |
| 617 | std::pair<uint16_t, const DexFile*>(encoded_catch_handler_handlers_type_idx, |
| 618 | &mh->GetDexFile())); |
| 619 | } |
| 620 | // ignore address associated with catch handler |
| 621 | DecodeUnsignedLeb128(&encoded_catch_handler_list); |
| 622 | } |
| 623 | if (has_catch_all) { |
| 624 | // ignore catch all address |
| 625 | DecodeUnsignedLeb128(&encoded_catch_handler_list); |
| 626 | } |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | static bool ResolveCatchBlockExceptionsClassVisitor(mirror::Class* c, void* arg) |
| 631 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 632 | std::set<std::pair<uint16_t, const DexFile*> >* exceptions_to_resolve = |
| 633 | reinterpret_cast<std::set<std::pair<uint16_t, const DexFile*> >*>(arg); |
| 634 | MethodHelper mh; |
| 635 | for (size_t i = 0; i < c->NumVirtualMethods(); ++i) { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 636 | mirror::ArtMethod* m = c->GetVirtualMethod(i); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 637 | mh.ChangeMethod(m); |
| 638 | ResolveExceptionsForMethod(&mh, *exceptions_to_resolve); |
| 639 | } |
| 640 | for (size_t i = 0; i < c->NumDirectMethods(); ++i) { |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 641 | mirror::ArtMethod* m = c->GetDirectMethod(i); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 642 | mh.ChangeMethod(m); |
| 643 | ResolveExceptionsForMethod(&mh, *exceptions_to_resolve); |
| 644 | } |
| 645 | return true; |
| 646 | } |
| 647 | |
| 648 | static bool RecordImageClassesVisitor(mirror::Class* klass, void* arg) |
| 649 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 650 | CompilerDriver::DescriptorSet* image_classes = |
| 651 | reinterpret_cast<CompilerDriver::DescriptorSet*>(arg); |
| 652 | image_classes->insert(ClassHelper(klass).GetDescriptor()); |
| 653 | return true; |
| 654 | } |
| 655 | |
| 656 | // Make a list of descriptors for classes to include in the image |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 657 | void CompilerDriver::LoadImageClasses(TimingLogger* timings) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 658 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 659 | if (!IsImage()) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 660 | return; |
| 661 | } |
| 662 | |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 663 | timings->NewSplit("LoadImageClasses"); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 664 | // Make a first class to load all classes explicitly listed in the file |
| 665 | Thread* self = Thread::Current(); |
| 666 | ScopedObjectAccess soa(self); |
| 667 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Mathieu Chartier | 02e2511 | 2013-08-14 16:14:24 -0700 | [diff] [blame] | 668 | for (auto it = image_classes_->begin(), end = image_classes_->end(); it != end;) { |
Vladimir Marko | e9c36b3 | 2013-11-21 15:49:16 +0000 | [diff] [blame] | 669 | const std::string& descriptor(*it); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 670 | SirtRef<mirror::Class> klass(self, class_linker->FindSystemClass(self, descriptor.c_str())); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 671 | if (klass.get() == NULL) { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 672 | VLOG(compiler) << "Failed to find class " << descriptor; |
Vladimir Marko | e9c36b3 | 2013-11-21 15:49:16 +0000 | [diff] [blame] | 673 | image_classes_->erase(it++); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 674 | self->ClearException(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 675 | } else { |
| 676 | ++it; |
| 677 | } |
| 678 | } |
| 679 | |
| 680 | // Resolve exception classes referenced by the loaded classes. The catch logic assumes |
| 681 | // exceptions are resolved by the verifier when there is a catch block in an interested method. |
| 682 | // Do this here so that exception classes appear to have been specified image classes. |
| 683 | std::set<std::pair<uint16_t, const DexFile*> > unresolved_exception_types; |
| 684 | SirtRef<mirror::Class> java_lang_Throwable(self, |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 685 | class_linker->FindSystemClass(self, "Ljava/lang/Throwable;")); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 686 | do { |
| 687 | unresolved_exception_types.clear(); |
| 688 | class_linker->VisitClasses(ResolveCatchBlockExceptionsClassVisitor, |
| 689 | &unresolved_exception_types); |
Mathieu Chartier | 02e2511 | 2013-08-14 16:14:24 -0700 | [diff] [blame] | 690 | for (const std::pair<uint16_t, const DexFile*>& exception_type : unresolved_exception_types) { |
| 691 | uint16_t exception_type_idx = exception_type.first; |
| 692 | const DexFile* dex_file = exception_type.second; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 693 | SirtRef<mirror::DexCache> dex_cache(self, class_linker->FindDexCache(*dex_file)); |
| 694 | SirtRef<mirror::ClassLoader> class_loader(self, nullptr); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 695 | SirtRef<mirror::Class> klass(self, class_linker->ResolveType(*dex_file, exception_type_idx, |
| 696 | dex_cache, class_loader)); |
| 697 | if (klass.get() == NULL) { |
| 698 | const DexFile::TypeId& type_id = dex_file->GetTypeId(exception_type_idx); |
| 699 | const char* descriptor = dex_file->GetTypeDescriptor(type_id); |
| 700 | LOG(FATAL) << "Failed to resolve class " << descriptor; |
| 701 | } |
| 702 | DCHECK(java_lang_Throwable->IsAssignableFrom(klass.get())); |
| 703 | } |
| 704 | // Resolving exceptions may load classes that reference more exceptions, iterate until no |
| 705 | // more are found |
| 706 | } while (!unresolved_exception_types.empty()); |
| 707 | |
| 708 | // We walk the roots looking for classes so that we'll pick up the |
| 709 | // above classes plus any classes them depend on such super |
| 710 | // classes, interfaces, and the required ClassLinker roots. |
| 711 | class_linker->VisitClasses(RecordImageClassesVisitor, image_classes_.get()); |
| 712 | |
| 713 | CHECK_NE(image_classes_->size(), 0U); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | static void MaybeAddToImageClasses(mirror::Class* klass, CompilerDriver::DescriptorSet* image_classes) |
| 717 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 718 | while (!klass->IsObjectClass()) { |
| 719 | ClassHelper kh(klass); |
| 720 | const char* descriptor = kh.GetDescriptor(); |
| 721 | std::pair<CompilerDriver::DescriptorSet::iterator, bool> result = |
| 722 | image_classes->insert(descriptor); |
| 723 | if (result.second) { |
Anwar Ghuloum | 75a43f1 | 2013-08-13 17:22:14 -0700 | [diff] [blame] | 724 | VLOG(compiler) << "Adding " << descriptor << " to image classes"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 725 | } else { |
| 726 | return; |
| 727 | } |
| 728 | for (size_t i = 0; i < kh.NumDirectInterfaces(); ++i) { |
| 729 | MaybeAddToImageClasses(kh.GetDirectInterface(i), image_classes); |
| 730 | } |
| 731 | if (klass->IsArrayClass()) { |
| 732 | MaybeAddToImageClasses(klass->GetComponentType(), image_classes); |
| 733 | } |
| 734 | klass = klass->GetSuperClass(); |
| 735 | } |
| 736 | } |
| 737 | |
| 738 | void CompilerDriver::FindClinitImageClassesCallback(mirror::Object* object, void* arg) { |
| 739 | DCHECK(object != NULL); |
| 740 | DCHECK(arg != NULL); |
| 741 | CompilerDriver* compiler_driver = reinterpret_cast<CompilerDriver*>(arg); |
| 742 | MaybeAddToImageClasses(object->GetClass(), compiler_driver->image_classes_.get()); |
| 743 | } |
| 744 | |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 745 | void CompilerDriver::UpdateImageClasses(TimingLogger* timings) { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 746 | if (IsImage()) { |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 747 | timings->NewSplit("UpdateImageClasses"); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 748 | |
| 749 | // Update image_classes_ with classes for objects created by <clinit> methods. |
| 750 | Thread* self = Thread::Current(); |
| 751 | const char* old_cause = self->StartAssertNoThreadSuspension("ImageWriter"); |
| 752 | gc::Heap* heap = Runtime::Current()->GetHeap(); |
| 753 | // TODO: Image spaces only? |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 754 | ScopedObjectAccess soa(Thread::Current()); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 755 | WriterMutexLock mu(self, *Locks::heap_bitmap_lock_); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 756 | heap->VisitObjects(FindClinitImageClassesCallback, this); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 757 | self->EndAssertNoThreadSuspension(old_cause); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 758 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 759 | } |
| 760 | |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 761 | bool CompilerDriver::CanAssumeTypeIsPresentInDexCache(const DexFile& dex_file, uint32_t type_idx) { |
Ian Rogers | fc0e94b | 2013-09-23 23:51:32 -0700 | [diff] [blame] | 762 | if (IsImage() && |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 763 | IsImageClass(dex_file.StringDataByIdx(dex_file.GetTypeId(type_idx).descriptor_idx_))) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 764 | if (kIsDebugBuild) { |
| 765 | ScopedObjectAccess soa(Thread::Current()); |
| 766 | mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); |
| 767 | mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); |
| 768 | CHECK(resolved_class != NULL); |
| 769 | } |
| 770 | stats_->TypeInDexCache(); |
| 771 | return true; |
| 772 | } else { |
| 773 | stats_->TypeNotInDexCache(); |
| 774 | return false; |
| 775 | } |
| 776 | } |
| 777 | |
| 778 | bool CompilerDriver::CanAssumeStringIsPresentInDexCache(const DexFile& dex_file, |
| 779 | uint32_t string_idx) { |
| 780 | // See also Compiler::ResolveDexFile |
| 781 | |
| 782 | bool result = false; |
| 783 | if (IsImage()) { |
| 784 | // We resolve all const-string strings when building for the image. |
| 785 | ScopedObjectAccess soa(Thread::Current()); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 786 | SirtRef<mirror::DexCache> dex_cache(soa.Self(), Runtime::Current()->GetClassLinker()->FindDexCache(dex_file)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 787 | Runtime::Current()->GetClassLinker()->ResolveString(dex_file, string_idx, dex_cache); |
| 788 | result = true; |
| 789 | } |
| 790 | if (result) { |
| 791 | stats_->StringInDexCache(); |
| 792 | } else { |
| 793 | stats_->StringNotInDexCache(); |
| 794 | } |
| 795 | return result; |
| 796 | } |
| 797 | |
| 798 | bool CompilerDriver::CanAccessTypeWithoutChecks(uint32_t referrer_idx, const DexFile& dex_file, |
| 799 | uint32_t type_idx, |
| 800 | bool* type_known_final, bool* type_known_abstract, |
| 801 | bool* equals_referrers_class) { |
| 802 | if (type_known_final != NULL) { |
| 803 | *type_known_final = false; |
| 804 | } |
| 805 | if (type_known_abstract != NULL) { |
| 806 | *type_known_abstract = false; |
| 807 | } |
| 808 | if (equals_referrers_class != NULL) { |
| 809 | *equals_referrers_class = false; |
| 810 | } |
| 811 | ScopedObjectAccess soa(Thread::Current()); |
| 812 | mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); |
| 813 | // Get type from dex cache assuming it was populated by the verifier |
| 814 | mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); |
| 815 | if (resolved_class == NULL) { |
| 816 | stats_->TypeNeedsAccessCheck(); |
| 817 | return false; // Unknown class needs access checks. |
| 818 | } |
| 819 | const DexFile::MethodId& method_id = dex_file.GetMethodId(referrer_idx); |
| 820 | if (equals_referrers_class != NULL) { |
| 821 | *equals_referrers_class = (method_id.class_idx_ == type_idx); |
| 822 | } |
| 823 | mirror::Class* referrer_class = dex_cache->GetResolvedType(method_id.class_idx_); |
| 824 | if (referrer_class == NULL) { |
| 825 | stats_->TypeNeedsAccessCheck(); |
| 826 | return false; // Incomplete referrer knowledge needs access check. |
| 827 | } |
| 828 | // Perform access check, will return true if access is ok or false if we're going to have to |
| 829 | // check this at runtime (for example for class loaders). |
| 830 | bool result = referrer_class->CanAccess(resolved_class); |
| 831 | if (result) { |
| 832 | stats_->TypeDoesntNeedAccessCheck(); |
| 833 | if (type_known_final != NULL) { |
| 834 | *type_known_final = resolved_class->IsFinal() && !resolved_class->IsArrayClass(); |
| 835 | } |
| 836 | if (type_known_abstract != NULL) { |
| 837 | *type_known_abstract = resolved_class->IsAbstract() && !resolved_class->IsArrayClass(); |
| 838 | } |
| 839 | } else { |
| 840 | stats_->TypeNeedsAccessCheck(); |
| 841 | } |
| 842 | return result; |
| 843 | } |
| 844 | |
| 845 | bool CompilerDriver::CanAccessInstantiableTypeWithoutChecks(uint32_t referrer_idx, |
| 846 | const DexFile& dex_file, |
| 847 | uint32_t type_idx) { |
| 848 | ScopedObjectAccess soa(Thread::Current()); |
| 849 | mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); |
| 850 | // Get type from dex cache assuming it was populated by the verifier. |
| 851 | mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); |
| 852 | if (resolved_class == NULL) { |
| 853 | stats_->TypeNeedsAccessCheck(); |
| 854 | return false; // Unknown class needs access checks. |
| 855 | } |
| 856 | const DexFile::MethodId& method_id = dex_file.GetMethodId(referrer_idx); |
| 857 | mirror::Class* referrer_class = dex_cache->GetResolvedType(method_id.class_idx_); |
| 858 | if (referrer_class == NULL) { |
| 859 | stats_->TypeNeedsAccessCheck(); |
| 860 | return false; // Incomplete referrer knowledge needs access check. |
| 861 | } |
| 862 | // Perform access and instantiable checks, will return true if access is ok or false if we're |
| 863 | // going to have to check this at runtime (for example for class loaders). |
| 864 | bool result = referrer_class->CanAccess(resolved_class) && resolved_class->IsInstantiable(); |
| 865 | if (result) { |
| 866 | stats_->TypeDoesntNeedAccessCheck(); |
| 867 | } else { |
| 868 | stats_->TypeNeedsAccessCheck(); |
| 869 | } |
| 870 | return result; |
| 871 | } |
| 872 | |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 873 | bool CompilerDriver::CanEmbedTypeInCode(const DexFile& dex_file, uint32_t type_idx, |
| 874 | bool* is_type_initialized, bool* use_direct_type_ptr, |
| 875 | uintptr_t* direct_type_ptr) { |
| 876 | ScopedObjectAccess soa(Thread::Current()); |
| 877 | mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); |
| 878 | mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); |
| 879 | if (resolved_class == nullptr) { |
| 880 | return false; |
| 881 | } |
| 882 | const bool compiling_boot = Runtime::Current()->GetHeap()->IsCompilingBoot(); |
| 883 | if (compiling_boot) { |
| 884 | // boot -> boot class pointers. |
| 885 | // True if the class is in the image at boot compiling time. |
| 886 | const bool is_image_class = IsImage() && IsImageClass( |
| 887 | dex_file.StringDataByIdx(dex_file.GetTypeId(type_idx).descriptor_idx_)); |
| 888 | // True if pc relative load works. |
| 889 | const bool support_boot_image_fixup = GetSupportBootImageFixup(); |
| 890 | if (is_image_class && support_boot_image_fixup) { |
| 891 | *is_type_initialized = resolved_class->IsInitialized(); |
| 892 | *use_direct_type_ptr = false; |
| 893 | *direct_type_ptr = 0; |
| 894 | return true; |
| 895 | } else { |
| 896 | return false; |
| 897 | } |
| 898 | } else { |
| 899 | // True if the class is in the image at app compiling time. |
| 900 | const bool class_in_image = |
| 901 | Runtime::Current()->GetHeap()->FindSpaceFromObject(resolved_class, false)->IsImageSpace(); |
| 902 | if (class_in_image) { |
| 903 | // boot -> app class pointers. |
| 904 | *is_type_initialized = resolved_class->IsInitialized(); |
| 905 | *use_direct_type_ptr = true; |
| 906 | *direct_type_ptr = reinterpret_cast<uintptr_t>(resolved_class); |
| 907 | return true; |
| 908 | } else { |
| 909 | // app -> app class pointers. |
| 910 | // Give up because app does not have an image and class |
| 911 | // isn't created at compile time. TODO: implement this |
| 912 | // if/when each app gets an image. |
| 913 | return false; |
| 914 | } |
| 915 | } |
| 916 | } |
| 917 | |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 918 | void CompilerDriver::ProcessedInstanceField(bool resolved) { |
| 919 | if (!resolved) { |
| 920 | stats_->UnresolvedInstanceField(); |
| 921 | } else { |
| 922 | stats_->ResolvedInstanceField(); |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | void CompilerDriver::ProcessedStaticField(bool resolved, bool local) { |
| 927 | if (!resolved) { |
| 928 | stats_->UnresolvedStaticField(); |
| 929 | } else if (local) { |
| 930 | stats_->ResolvedLocalStaticField(); |
| 931 | } else { |
| 932 | stats_->ResolvedStaticField(); |
| 933 | } |
| 934 | } |
| 935 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 936 | static mirror::Class* ComputeCompilingMethodsClass(ScopedObjectAccess& soa, |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 937 | SirtRef<mirror::DexCache>& dex_cache, |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 938 | const DexCompilationUnit* mUnit) |
| 939 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 940 | // The passed dex_cache is a hint, sanity check before asking the class linker that will take a |
| 941 | // lock. |
| 942 | if (dex_cache->GetDexFile() != mUnit->GetDexFile()) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 943 | dex_cache.reset(mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 944 | } |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 945 | SirtRef<mirror::ClassLoader> |
| 946 | class_loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); |
| 947 | const DexFile::MethodId& referrer_method_id = |
| 948 | mUnit->GetDexFile()->GetMethodId(mUnit->GetDexMethodIndex()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 949 | return mUnit->GetClassLinker()->ResolveType(*mUnit->GetDexFile(), referrer_method_id.class_idx_, |
| 950 | dex_cache, class_loader); |
| 951 | } |
| 952 | |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 953 | static mirror::ArtMethod* ComputeMethodReferencedFromCompilingMethod(ScopedObjectAccess& soa, |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 954 | const DexCompilationUnit* mUnit, |
| 955 | uint32_t method_idx, |
| 956 | InvokeType type) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 957 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 958 | SirtRef<mirror::DexCache> dex_cache(soa.Self(), mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); |
| 959 | SirtRef<mirror::ClassLoader> class_loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 960 | return mUnit->GetClassLinker()->ResolveMethod(*mUnit->GetDexFile(), method_idx, dex_cache, |
| 961 | class_loader, NULL, type); |
| 962 | } |
| 963 | |
Vladimir Marko | 2bc4780 | 2014-02-10 09:43:07 +0000 | [diff] [blame] | 964 | bool CompilerDriver::ComputeSpecialAccessorInfo(uint32_t field_idx, bool is_put, |
| 965 | verifier::MethodVerifier* verifier, |
| 966 | InlineIGetIPutData* result) { |
| 967 | mirror::DexCache* dex_cache = verifier->GetDexCache(); |
| 968 | uint32_t method_idx = verifier->GetMethodReference().dex_method_index; |
| 969 | mirror::ArtMethod* method = dex_cache->GetResolvedMethod(method_idx); |
| 970 | mirror::ArtField* field = dex_cache->GetResolvedField(field_idx); |
Vladimir Marko | c7ac649 | 2014-02-12 10:17:09 +0000 | [diff] [blame] | 971 | if (method == nullptr || field == nullptr || field->IsStatic()) { |
Vladimir Marko | 2bc4780 | 2014-02-10 09:43:07 +0000 | [diff] [blame] | 972 | return false; |
| 973 | } |
| 974 | mirror::Class* method_class = method->GetDeclaringClass(); |
| 975 | mirror::Class* field_class = field->GetDeclaringClass(); |
| 976 | if (!method_class->CanAccessResolvedField(field_class, field, dex_cache, field_idx) || |
| 977 | (is_put && field->IsFinal() && method_class != field_class)) { |
| 978 | return false; |
| 979 | } |
| 980 | DCHECK_GE(field->GetOffset().Int32Value(), 0); |
Vladimir Marko | 2bc4780 | 2014-02-10 09:43:07 +0000 | [diff] [blame] | 981 | result->field_idx = field_idx; |
| 982 | result->field_offset = field->GetOffset().Int32Value(); |
| 983 | result->is_volatile = field->IsVolatile(); |
| 984 | return true; |
| 985 | } |
| 986 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 987 | bool CompilerDriver::ComputeInstanceFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 988 | bool is_put, MemberOffset* field_offset, |
| 989 | bool* is_volatile) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 990 | ScopedObjectAccess soa(Thread::Current()); |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 991 | // Try to resolve the field and compiling method's class. |
| 992 | mirror::ArtField* resolved_field; |
| 993 | mirror::Class* referrer_class; |
| 994 | mirror::DexCache* dex_cache; |
| 995 | { |
| 996 | SirtRef<mirror::DexCache> dex_cache_sirt(soa.Self(), |
| 997 | mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); |
| 998 | SirtRef<mirror::ClassLoader> class_loader_sirt(soa.Self(), |
| 999 | soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); |
| 1000 | SirtRef<mirror::ArtField> resolved_field_sirt(soa.Self(), |
| 1001 | ResolveField(soa, dex_cache_sirt, class_loader_sirt, mUnit, field_idx, false)); |
| 1002 | referrer_class = (resolved_field_sirt.get() != nullptr) |
| 1003 | ? ResolveCompilingMethodsClass(soa, dex_cache_sirt, class_loader_sirt, mUnit) : nullptr; |
| 1004 | resolved_field = resolved_field_sirt.get(); |
| 1005 | dex_cache = dex_cache_sirt.get(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1006 | } |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1007 | bool result = false; |
| 1008 | if (resolved_field != nullptr && referrer_class != nullptr) { |
| 1009 | *is_volatile = IsFieldVolatile(resolved_field); |
| 1010 | std::pair<bool, bool> fast_path = IsFastInstanceField( |
| 1011 | dex_cache, referrer_class, resolved_field, field_idx, field_offset); |
| 1012 | result = is_put ? fast_path.second : fast_path.first; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1013 | } |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1014 | if (!result) { |
| 1015 | // Conservative defaults. |
| 1016 | *is_volatile = true; |
| 1017 | *field_offset = MemberOffset(static_cast<size_t>(-1)); |
| 1018 | } |
| 1019 | ProcessedInstanceField(result); |
| 1020 | return result; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1021 | } |
| 1022 | |
| 1023 | bool CompilerDriver::ComputeStaticFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1024 | bool is_put, MemberOffset* field_offset, |
| 1025 | uint32_t* storage_index, bool* is_referrers_class, |
| 1026 | bool* is_volatile, bool* is_initialized) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1027 | ScopedObjectAccess soa(Thread::Current()); |
Vladimir Marko | be0e546 | 2014-02-26 11:24:15 +0000 | [diff] [blame] | 1028 | // Try to resolve the field and compiling method's class. |
| 1029 | mirror::ArtField* resolved_field; |
| 1030 | mirror::Class* referrer_class; |
| 1031 | mirror::DexCache* dex_cache; |
| 1032 | { |
| 1033 | SirtRef<mirror::DexCache> dex_cache_sirt(soa.Self(), |
| 1034 | mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); |
| 1035 | SirtRef<mirror::ClassLoader> class_loader_sirt(soa.Self(), |
| 1036 | soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); |
| 1037 | SirtRef<mirror::ArtField> resolved_field_sirt(soa.Self(), |
| 1038 | ResolveField(soa, dex_cache_sirt, class_loader_sirt, mUnit, field_idx, true)); |
| 1039 | referrer_class = (resolved_field_sirt.get() != nullptr) |
| 1040 | ? ResolveCompilingMethodsClass(soa, dex_cache_sirt, class_loader_sirt, mUnit) : nullptr; |
| 1041 | resolved_field = resolved_field_sirt.get(); |
| 1042 | dex_cache = dex_cache_sirt.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, |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1068 | bool update_stats, |
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 | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 1080 | if (compiler_backend_->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 | } |
| 1106 | if (update_stats && method_code_in_boot) { |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 1107 | stats_->DirectCallsToBoot(*type); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1108 | stats_->DirectMethodsToBoot(*type); |
| 1109 | } |
| 1110 | if (!use_dex_cache && compiling_boot) { |
| 1111 | MethodHelper mh(method); |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 1112 | if (!IsImageClass(mh.GetDeclaringClassDescriptor())) { |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1113 | // We can only branch directly to Methods that are resolved in the DexCache. |
| 1114 | // Otherwise we won't invoke the resolution trampoline. |
| 1115 | use_dex_cache = true; |
| 1116 | } |
| 1117 | } |
| 1118 | // The method is defined not within this dex file. We need a dex cache slot within the current |
| 1119 | // dex file or direct pointers. |
| 1120 | bool must_use_direct_pointers = false; |
| 1121 | if (target_method->dex_file == method->GetDeclaringClass()->GetDexCache()->GetDexFile()) { |
| 1122 | target_method->dex_method_index = method->GetDexMethodIndex(); |
| 1123 | } else { |
| 1124 | // TODO: support patching from one dex file to another in the boot image. |
| 1125 | use_dex_cache = use_dex_cache || compiling_boot; |
| 1126 | if (no_guarantee_of_dex_cache_entry) { |
| 1127 | // See if the method is also declared in this dex cache. |
| 1128 | uint32_t dex_method_idx = MethodHelper(method).FindDexMethodIndexInOtherDexFile( |
Vladimir Marko | bbcc0c0 | 2014-02-03 14:08:42 +0000 | [diff] [blame] | 1129 | *target_method->dex_file, target_method->dex_method_index); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1130 | if (dex_method_idx != DexFile::kDexNoIndex) { |
| 1131 | target_method->dex_method_index = dex_method_idx; |
| 1132 | } else { |
| 1133 | must_use_direct_pointers = true; |
| 1134 | } |
| 1135 | } |
| 1136 | } |
| 1137 | if (use_dex_cache) { |
| 1138 | if (must_use_direct_pointers) { |
| 1139 | // Fail. Test above showed the only safe dispatch was via the dex cache, however, the direct |
| 1140 | // pointers are required as the dex cache lacks an appropriate entry. |
| 1141 | VLOG(compiler) << "Dex cache devirtualization failed for: " << PrettyMethod(method); |
| 1142 | } else { |
| 1143 | *type = sharp_type; |
| 1144 | } |
| 1145 | } else { |
| 1146 | if (compiling_boot) { |
| 1147 | *type = sharp_type; |
| 1148 | *direct_method = -1; |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 1149 | *direct_code = -1; |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1150 | } else { |
| 1151 | bool method_in_image = |
| 1152 | Runtime::Current()->GetHeap()->FindSpaceFromObject(method, false)->IsImageSpace(); |
| 1153 | if (method_in_image) { |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 1154 | CHECK(!method->IsAbstract()); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1155 | *type = sharp_type; |
| 1156 | *direct_method = reinterpret_cast<uintptr_t>(method); |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 1157 | *direct_code = compiler_backend_->GetEntryPointOf(method); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1158 | target_method->dex_file = method->GetDeclaringClass()->GetDexCache()->GetDexFile(); |
| 1159 | target_method->dex_method_index = method->GetDexMethodIndex(); |
| 1160 | } else if (!must_use_direct_pointers) { |
| 1161 | // Set the code and rely on the dex cache for the method. |
| 1162 | *type = sharp_type; |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 1163 | *direct_code = compiler_backend_->GetEntryPointOf(method); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1164 | } else { |
| 1165 | // Direct pointers were required but none were available. |
| 1166 | VLOG(compiler) << "Dex cache devirtualization failed for: " << PrettyMethod(method); |
| 1167 | } |
| 1168 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1169 | } |
| 1170 | } |
| 1171 | |
| 1172 | bool CompilerDriver::ComputeInvokeInfo(const DexCompilationUnit* mUnit, const uint32_t dex_pc, |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1173 | bool update_stats, bool enable_devirtualization, |
| 1174 | InvokeType* invoke_type, MethodReference* target_method, |
| 1175 | int* vtable_idx, uintptr_t* direct_code, |
| 1176 | uintptr_t* direct_method) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1177 | ScopedObjectAccess soa(Thread::Current()); |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1178 | *vtable_idx = -1; |
| 1179 | *direct_code = 0; |
| 1180 | *direct_method = 0; |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 1181 | mirror::ArtMethod* resolved_method = |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1182 | ComputeMethodReferencedFromCompilingMethod(soa, mUnit, target_method->dex_method_index, |
| 1183 | *invoke_type); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1184 | if (resolved_method != NULL) { |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1185 | if (*invoke_type == kVirtual || *invoke_type == kSuper) { |
| 1186 | *vtable_idx = resolved_method->GetMethodIndex(); |
Jeff Hao | 88474b4 | 2013-10-23 16:24:40 -0700 | [diff] [blame] | 1187 | } else if (*invoke_type == kInterface) { |
| 1188 | *vtable_idx = resolved_method->GetDexMethodIndex(); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1189 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1190 | // Don't try to fast-path if we don't understand the caller's class or this appears to be an |
| 1191 | // Incompatible Class Change Error. |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1192 | SirtRef<mirror::DexCache> dex_cache(soa.Self(), resolved_method->GetDeclaringClass()->GetDexCache()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1193 | mirror::Class* referrer_class = |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1194 | ComputeCompilingMethodsClass(soa, dex_cache, mUnit); |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1195 | bool icce = resolved_method->CheckIncompatibleClassChange(*invoke_type); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1196 | if (referrer_class != NULL && !icce) { |
| 1197 | mirror::Class* methods_class = resolved_method->GetDeclaringClass(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 1198 | if (referrer_class->CanAccessResolvedMethod(methods_class, resolved_method, dex_cache.get(), |
| 1199 | target_method->dex_method_index)) { |
Sebastien Hertz | 1e54d68 | 2013-09-06 14:52:10 +0200 | [diff] [blame] | 1200 | const bool enableFinalBasedSharpening = enable_devirtualization; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1201 | // Sharpen a virtual call into a direct call when the target is known not to have been |
| 1202 | // overridden (ie is final). |
| 1203 | bool can_sharpen_virtual_based_on_type = |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1204 | (*invoke_type == kVirtual) && (resolved_method->IsFinal() || methods_class->IsFinal()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1205 | // For invoke-super, ensure the vtable index will be correct to dispatch in the vtable of |
| 1206 | // the super class. |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1207 | bool can_sharpen_super_based_on_type = (*invoke_type == kSuper) && |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1208 | (referrer_class != methods_class) && referrer_class->IsSubClass(methods_class) && |
| 1209 | resolved_method->GetMethodIndex() < methods_class->GetVTable()->GetLength() && |
| 1210 | (methods_class->GetVTable()->Get(resolved_method->GetMethodIndex()) == resolved_method); |
| 1211 | |
Sebastien Hertz | 1e54d68 | 2013-09-06 14:52:10 +0200 | [diff] [blame] | 1212 | if (enableFinalBasedSharpening && (can_sharpen_virtual_based_on_type || |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1213 | can_sharpen_super_based_on_type)) { |
Vladimir Marko | 8978643 | 2014-01-31 15:03:55 +0000 | [diff] [blame] | 1214 | // Sharpen a virtual call into a direct call. The method_idx is into the DexCache |
| 1215 | // associated with target_method->dex_file. |
| 1216 | CHECK(target_method->dex_file == mUnit->GetDexFile()); |
| 1217 | DCHECK(dex_cache.get() == mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); |
| 1218 | CHECK(dex_cache->GetResolvedMethod(target_method->dex_method_index) == |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1219 | resolved_method) << PrettyMethod(resolved_method); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1220 | InvokeType orig_invoke_type = *invoke_type; |
| 1221 | GetCodeAndMethodForDirectCall(invoke_type, kDirect, false, referrer_class, resolved_method, |
| 1222 | update_stats, target_method, direct_code, direct_method); |
| 1223 | if (update_stats && (*invoke_type == kDirect)) { |
| 1224 | stats_->ResolvedMethod(orig_invoke_type); |
| 1225 | stats_->VirtualMadeDirect(orig_invoke_type); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1226 | } |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1227 | DCHECK_NE(*invoke_type, kSuper) << PrettyMethod(resolved_method); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1228 | return true; |
| 1229 | } |
Sebastien Hertz | 1e54d68 | 2013-09-06 14:52:10 +0200 | [diff] [blame] | 1230 | const bool enableVerifierBasedSharpening = enable_devirtualization; |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1231 | if (enableVerifierBasedSharpening && (*invoke_type == kVirtual || |
| 1232 | *invoke_type == kInterface)) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1233 | // Did the verifier record a more precise invoke target based on its type information? |
Vladimir Marko | 2730db0 | 2014-01-27 11:15:17 +0000 | [diff] [blame] | 1234 | DCHECK(mUnit->GetVerifiedMethod() != nullptr); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1235 | const MethodReference* devirt_map_target = |
Vladimir Marko | 2730db0 | 2014-01-27 11:15:17 +0000 | [diff] [blame] | 1236 | mUnit->GetVerifiedMethod()->GetDevirtTarget(dex_pc); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1237 | if (devirt_map_target != NULL) { |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1238 | SirtRef<mirror::DexCache> target_dex_cache(soa.Self(), mUnit->GetClassLinker()->FindDexCache(*devirt_map_target->dex_file)); |
| 1239 | SirtRef<mirror::ClassLoader> class_loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); |
Brian Carlstrom | ea46f95 | 2013-07-30 01:26:50 -0700 | [diff] [blame] | 1240 | mirror::ArtMethod* called_method = |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1241 | mUnit->GetClassLinker()->ResolveMethod(*devirt_map_target->dex_file, |
| 1242 | devirt_map_target->dex_method_index, |
| 1243 | target_dex_cache, class_loader, NULL, |
| 1244 | kVirtual); |
| 1245 | CHECK(called_method != NULL); |
| 1246 | CHECK(!called_method->IsAbstract()); |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1247 | InvokeType orig_invoke_type = *invoke_type; |
| 1248 | GetCodeAndMethodForDirectCall(invoke_type, kDirect, true, referrer_class, called_method, |
| 1249 | update_stats, target_method, direct_code, direct_method); |
| 1250 | if (update_stats && (*invoke_type == kDirect)) { |
| 1251 | stats_->ResolvedMethod(orig_invoke_type); |
| 1252 | stats_->VirtualMadeDirect(orig_invoke_type); |
| 1253 | stats_->PreciseTypeDevirtualization(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1254 | } |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1255 | DCHECK_NE(*invoke_type, kSuper); |
| 1256 | return true; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1257 | } |
| 1258 | } |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1259 | if (*invoke_type == kSuper) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1260 | // Unsharpened super calls are suspicious so go slow-path. |
| 1261 | } else { |
| 1262 | // Sharpening failed so generate a regular resolved method dispatch. |
| 1263 | if (update_stats) { |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1264 | stats_->ResolvedMethod(*invoke_type); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1265 | } |
Ian Rogers | 83883d7 | 2013-10-21 21:07:24 -0700 | [diff] [blame] | 1266 | GetCodeAndMethodForDirectCall(invoke_type, *invoke_type, false, referrer_class, resolved_method, |
| 1267 | update_stats, target_method, direct_code, direct_method); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1268 | return true; |
| 1269 | } |
| 1270 | } |
| 1271 | } |
| 1272 | } |
| 1273 | // Clean up any exception left by method/invoke_type resolution |
| 1274 | if (soa.Self()->IsExceptionPending()) { |
| 1275 | soa.Self()->ClearException(); |
| 1276 | } |
| 1277 | if (update_stats) { |
Ian Rogers | 65ec92c | 2013-09-06 10:49:58 -0700 | [diff] [blame] | 1278 | stats_->UnresolvedMethod(*invoke_type); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1279 | } |
| 1280 | return false; // Incomplete knowledge needs slow path. |
| 1281 | } |
| 1282 | |
Vladimir Marko | 2730db0 | 2014-01-27 11:15:17 +0000 | [diff] [blame] | 1283 | const VerifiedMethod* CompilerDriver::GetVerifiedMethod(const DexFile* dex_file, |
| 1284 | uint32_t method_idx) const { |
| 1285 | MethodReference ref(dex_file, method_idx); |
| 1286 | return verification_results_->GetVerifiedMethod(ref); |
| 1287 | } |
| 1288 | |
| 1289 | bool CompilerDriver::IsSafeCast(const DexCompilationUnit* mUnit, uint32_t dex_pc) { |
| 1290 | DCHECK(mUnit->GetVerifiedMethod() != nullptr); |
| 1291 | bool result = mUnit->GetVerifiedMethod()->IsSafeCast(dex_pc); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1292 | if (result) { |
| 1293 | stats_->SafeCast(); |
| 1294 | } else { |
| 1295 | stats_->NotASafeCast(); |
| 1296 | } |
| 1297 | return result; |
| 1298 | } |
| 1299 | |
| 1300 | |
| 1301 | void CompilerDriver::AddCodePatch(const DexFile* dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1302 | uint16_t referrer_class_def_idx, |
| 1303 | uint32_t referrer_method_idx, |
| 1304 | InvokeType referrer_invoke_type, |
| 1305 | uint32_t target_method_idx, |
| 1306 | InvokeType target_invoke_type, |
| 1307 | size_t literal_offset) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1308 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 1309 | code_to_patch_.push_back(new CallPatchInformation(dex_file, |
| 1310 | referrer_class_def_idx, |
| 1311 | referrer_method_idx, |
| 1312 | referrer_invoke_type, |
| 1313 | target_method_idx, |
| 1314 | target_invoke_type, |
| 1315 | literal_offset)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1316 | } |
Mark Mendell | 55d0eac | 2014-02-06 11:02:52 -0800 | [diff] [blame] | 1317 | void CompilerDriver::AddRelativeCodePatch(const DexFile* dex_file, |
| 1318 | uint16_t referrer_class_def_idx, |
| 1319 | uint32_t referrer_method_idx, |
| 1320 | InvokeType referrer_invoke_type, |
| 1321 | uint32_t target_method_idx, |
| 1322 | InvokeType target_invoke_type, |
| 1323 | size_t literal_offset, |
| 1324 | int32_t pc_relative_offset) { |
| 1325 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
| 1326 | code_to_patch_.push_back(new RelativeCallPatchInformation(dex_file, |
| 1327 | referrer_class_def_idx, |
| 1328 | referrer_method_idx, |
| 1329 | referrer_invoke_type, |
| 1330 | target_method_idx, |
| 1331 | target_invoke_type, |
| 1332 | literal_offset, |
| 1333 | pc_relative_offset)); |
| 1334 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1335 | void CompilerDriver::AddMethodPatch(const DexFile* dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1336 | uint16_t referrer_class_def_idx, |
| 1337 | uint32_t referrer_method_idx, |
| 1338 | InvokeType referrer_invoke_type, |
| 1339 | uint32_t target_method_idx, |
| 1340 | InvokeType target_invoke_type, |
| 1341 | size_t literal_offset) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1342 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
Hiroshi Yamauchi | be1ca55 | 2014-01-15 11:46:48 -0800 | [diff] [blame] | 1343 | methods_to_patch_.push_back(new CallPatchInformation(dex_file, |
| 1344 | referrer_class_def_idx, |
| 1345 | referrer_method_idx, |
| 1346 | referrer_invoke_type, |
| 1347 | target_method_idx, |
| 1348 | target_invoke_type, |
| 1349 | literal_offset)); |
| 1350 | } |
| 1351 | void CompilerDriver::AddClassPatch(const DexFile* dex_file, |
| 1352 | uint16_t referrer_class_def_idx, |
| 1353 | uint32_t referrer_method_idx, |
| 1354 | uint32_t target_type_idx, |
| 1355 | size_t literal_offset) { |
| 1356 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
| 1357 | classes_to_patch_.push_back(new TypePatchInformation(dex_file, |
| 1358 | referrer_class_def_idx, |
| 1359 | referrer_method_idx, |
| 1360 | target_type_idx, |
| 1361 | literal_offset)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1362 | } |
| 1363 | |
| 1364 | class ParallelCompilationManager { |
| 1365 | public: |
| 1366 | typedef void Callback(const ParallelCompilationManager* manager, size_t index); |
| 1367 | |
| 1368 | ParallelCompilationManager(ClassLinker* class_linker, |
| 1369 | jobject class_loader, |
| 1370 | CompilerDriver* compiler, |
| 1371 | const DexFile* dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1372 | ThreadPool* thread_pool) |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1373 | : index_(0), |
| 1374 | class_linker_(class_linker), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1375 | class_loader_(class_loader), |
| 1376 | compiler_(compiler), |
| 1377 | dex_file_(dex_file), |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1378 | thread_pool_(thread_pool) {} |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1379 | |
| 1380 | ClassLinker* GetClassLinker() const { |
| 1381 | CHECK(class_linker_ != NULL); |
| 1382 | return class_linker_; |
| 1383 | } |
| 1384 | |
| 1385 | jobject GetClassLoader() const { |
| 1386 | return class_loader_; |
| 1387 | } |
| 1388 | |
| 1389 | CompilerDriver* GetCompiler() const { |
| 1390 | CHECK(compiler_ != NULL); |
| 1391 | return compiler_; |
| 1392 | } |
| 1393 | |
| 1394 | const DexFile* GetDexFile() const { |
| 1395 | CHECK(dex_file_ != NULL); |
| 1396 | return dex_file_; |
| 1397 | } |
| 1398 | |
| 1399 | void ForAll(size_t begin, size_t end, Callback callback, size_t work_units) { |
| 1400 | Thread* self = Thread::Current(); |
| 1401 | self->AssertNoPendingException(); |
| 1402 | CHECK_GT(work_units, 0U); |
| 1403 | |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1404 | index_ = begin; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1405 | for (size_t i = 0; i < work_units; ++i) { |
Sebastien Hertz | 501baec | 2013-12-13 12:02:36 +0100 | [diff] [blame] | 1406 | thread_pool_->AddTask(self, new ForAllClosure(this, end, callback)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1407 | } |
| 1408 | thread_pool_->StartWorkers(self); |
| 1409 | |
| 1410 | // Ensure we're suspended while we're blocked waiting for the other threads to finish (worker |
| 1411 | // thread destructor's called below perform join). |
| 1412 | CHECK_NE(self->GetState(), kRunnable); |
| 1413 | |
| 1414 | // Wait for all the worker threads to finish. |
| 1415 | thread_pool_->Wait(self, true, false); |
| 1416 | } |
| 1417 | |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1418 | size_t NextIndex() { |
Ian Rogers | b122a4b | 2013-11-19 18:00:50 -0800 | [diff] [blame] | 1419 | return index_.FetchAndAdd(1); |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1420 | } |
| 1421 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1422 | private: |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1423 | class ForAllClosure : public Task { |
| 1424 | public: |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1425 | ForAllClosure(ParallelCompilationManager* manager, size_t end, Callback* callback) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1426 | : manager_(manager), |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1427 | end_(end), |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1428 | callback_(callback) {} |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1429 | |
| 1430 | virtual void Run(Thread* self) { |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1431 | while (true) { |
| 1432 | const size_t index = manager_->NextIndex(); |
| 1433 | if (UNLIKELY(index >= end_)) { |
| 1434 | break; |
| 1435 | } |
| 1436 | callback_(manager_, index); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1437 | self->AssertNoPendingException(); |
| 1438 | } |
| 1439 | } |
| 1440 | |
| 1441 | virtual void Finalize() { |
| 1442 | delete this; |
| 1443 | } |
Brian Carlstrom | 0cd7ec2 | 2013-07-17 23:40:20 -0700 | [diff] [blame] | 1444 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1445 | private: |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1446 | ParallelCompilationManager* const manager_; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1447 | const size_t end_; |
Bernhard Rosenkränzer | 4605362 | 2013-12-12 02:15:52 +0100 | [diff] [blame] | 1448 | Callback* const callback_; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1449 | }; |
| 1450 | |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1451 | AtomicInteger index_; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1452 | ClassLinker* const class_linker_; |
| 1453 | const jobject class_loader_; |
| 1454 | CompilerDriver* const compiler_; |
| 1455 | const DexFile* const dex_file_; |
| 1456 | ThreadPool* const thread_pool_; |
Mathieu Chartier | 0b3eb39 | 2013-08-23 14:56:59 -0700 | [diff] [blame] | 1457 | |
| 1458 | DISALLOW_COPY_AND_ASSIGN(ParallelCompilationManager); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1459 | }; |
| 1460 | |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1461 | // Return true if the class should be skipped during compilation. |
| 1462 | // |
| 1463 | // The first case where we skip is for redundant class definitions in |
| 1464 | // the boot classpath. We skip all but the first definition in that case. |
| 1465 | // |
| 1466 | // The second case where we skip is when an app bundles classes found |
| 1467 | // in the boot classpath. Since at runtime we will select the class from |
| 1468 | // the boot classpath, we ignore the one from the app. |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1469 | static bool SkipClass(ClassLinker* class_linker, jobject class_loader, const DexFile& dex_file, |
| 1470 | const DexFile::ClassDef& class_def) { |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1471 | const char* descriptor = dex_file.GetClassDescriptor(class_def); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1472 | if (class_loader == NULL) { |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1473 | DexFile::ClassPathEntry pair = DexFile::FindInClassPath(descriptor, class_linker->GetBootClassPath()); |
| 1474 | CHECK(pair.second != NULL); |
| 1475 | if (pair.first != &dex_file) { |
| 1476 | LOG(WARNING) << "Skipping class " << descriptor << " from " << dex_file.GetLocation() |
| 1477 | << " previously found in " << pair.first->GetLocation(); |
| 1478 | return true; |
| 1479 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1480 | return false; |
| 1481 | } |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1482 | return class_linker->IsInBootClassPath(descriptor); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1483 | } |
| 1484 | |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1485 | // A fast version of SkipClass above if the class pointer is available |
| 1486 | // that avoids the expensive FindInClassPath search. |
| 1487 | static bool SkipClass(jobject class_loader, const DexFile& dex_file, mirror::Class* klass) |
| 1488 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 1489 | DCHECK(klass != NULL); |
| 1490 | const DexFile& original_dex_file = *klass->GetDexCache()->GetDexFile(); |
| 1491 | if (&dex_file != &original_dex_file) { |
| 1492 | if (class_loader == NULL) { |
| 1493 | LOG(WARNING) << "Skipping class " << PrettyDescriptor(klass) << " from " |
| 1494 | << dex_file.GetLocation() << " previously found in " |
| 1495 | << original_dex_file.GetLocation(); |
| 1496 | } |
| 1497 | return true; |
| 1498 | } |
| 1499 | return false; |
| 1500 | } |
| 1501 | |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1502 | static void ResolveClassFieldsAndMethods(const ParallelCompilationManager* manager, |
| 1503 | size_t class_def_index) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1504 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1505 | ATRACE_CALL(); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1506 | Thread* self = Thread::Current(); |
| 1507 | jobject jclass_loader = manager->GetClassLoader(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1508 | const DexFile& dex_file = *manager->GetDexFile(); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1509 | ClassLinker* class_linker = manager->GetClassLinker(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1510 | |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1511 | // If an instance field is final then we need to have a barrier on the return, static final |
| 1512 | // fields are assigned within the lock held for class initialization. Conservatively assume |
| 1513 | // constructor barriers are always required. |
| 1514 | bool requires_constructor_barrier = true; |
| 1515 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1516 | // Method and Field are the worst. We can't resolve without either |
| 1517 | // context from the code use (to disambiguate virtual vs direct |
| 1518 | // method and instance vs static field) or from class |
| 1519 | // definitions. While the compiler will resolve what it can as it |
| 1520 | // needs it, here we try to resolve fields and methods used in class |
| 1521 | // definitions, since many of them many never be referenced by |
| 1522 | // generated code. |
| 1523 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1524 | if (!SkipClass(class_linker, jclass_loader, dex_file, class_def)) { |
Brian Carlstrom | cb5f5e5 | 2013-09-23 17:48:16 -0700 | [diff] [blame] | 1525 | ScopedObjectAccess soa(self); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1526 | SirtRef<mirror::ClassLoader> class_loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(jclass_loader)); |
| 1527 | SirtRef<mirror::DexCache> dex_cache(soa.Self(), class_linker->FindDexCache(dex_file)); |
Brian Carlstrom | cb5f5e5 | 2013-09-23 17:48:16 -0700 | [diff] [blame] | 1528 | // Resolve the class. |
| 1529 | mirror::Class* klass = class_linker->ResolveType(dex_file, class_def.class_idx_, dex_cache, |
| 1530 | class_loader); |
Brian Carlstrom | cb5f5e5 | 2013-09-23 17:48:16 -0700 | [diff] [blame] | 1531 | bool resolve_fields_and_methods; |
| 1532 | if (klass == NULL) { |
| 1533 | // Class couldn't be resolved, for example, super-class is in a different dex file. Don't |
| 1534 | // attempt to resolve methods and fields when there is no declaring class. |
| 1535 | CHECK(soa.Self()->IsExceptionPending()); |
| 1536 | soa.Self()->ClearException(); |
| 1537 | resolve_fields_and_methods = false; |
| 1538 | } else { |
| 1539 | resolve_fields_and_methods = manager->GetCompiler()->IsImage(); |
| 1540 | } |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1541 | // Note the class_data pointer advances through the headers, |
| 1542 | // static fields, instance fields, direct methods, and virtual |
| 1543 | // methods. |
| 1544 | const byte* class_data = dex_file.GetClassData(class_def); |
| 1545 | if (class_data == NULL) { |
| 1546 | // Empty class such as a marker interface. |
| 1547 | requires_constructor_barrier = false; |
| 1548 | } else { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1549 | ClassDataItemIterator it(dex_file, class_data); |
| 1550 | while (it.HasNextStaticField()) { |
| 1551 | if (resolve_fields_and_methods) { |
| 1552 | mirror::ArtField* field = class_linker->ResolveField(dex_file, it.GetMemberIndex(), |
| 1553 | dex_cache, class_loader, true); |
| 1554 | if (field == NULL) { |
| 1555 | CHECK(soa.Self()->IsExceptionPending()); |
| 1556 | soa.Self()->ClearException(); |
| 1557 | } |
| 1558 | } |
| 1559 | it.Next(); |
| 1560 | } |
| 1561 | // We require a constructor barrier if there are final instance fields. |
| 1562 | requires_constructor_barrier = false; |
| 1563 | while (it.HasNextInstanceField()) { |
| 1564 | if ((it.GetMemberAccessFlags() & kAccFinal) != 0) { |
| 1565 | requires_constructor_barrier = true; |
| 1566 | } |
| 1567 | if (resolve_fields_and_methods) { |
| 1568 | mirror::ArtField* field = class_linker->ResolveField(dex_file, it.GetMemberIndex(), |
| 1569 | dex_cache, class_loader, false); |
| 1570 | if (field == NULL) { |
| 1571 | CHECK(soa.Self()->IsExceptionPending()); |
| 1572 | soa.Self()->ClearException(); |
| 1573 | } |
| 1574 | } |
| 1575 | it.Next(); |
| 1576 | } |
| 1577 | if (resolve_fields_and_methods) { |
| 1578 | while (it.HasNextDirectMethod()) { |
| 1579 | mirror::ArtMethod* method = class_linker->ResolveMethod(dex_file, it.GetMemberIndex(), |
| 1580 | dex_cache, class_loader, NULL, |
| 1581 | it.GetMethodInvokeType(class_def)); |
| 1582 | if (method == NULL) { |
| 1583 | CHECK(soa.Self()->IsExceptionPending()); |
| 1584 | soa.Self()->ClearException(); |
| 1585 | } |
| 1586 | it.Next(); |
| 1587 | } |
| 1588 | while (it.HasNextVirtualMethod()) { |
| 1589 | mirror::ArtMethod* method = class_linker->ResolveMethod(dex_file, it.GetMemberIndex(), |
| 1590 | dex_cache, class_loader, NULL, |
| 1591 | it.GetMethodInvokeType(class_def)); |
| 1592 | if (method == NULL) { |
| 1593 | CHECK(soa.Self()->IsExceptionPending()); |
| 1594 | soa.Self()->ClearException(); |
| 1595 | } |
| 1596 | it.Next(); |
| 1597 | } |
| 1598 | DCHECK(!it.HasNext()); |
| 1599 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1600 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1601 | } |
| 1602 | if (requires_constructor_barrier) { |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1603 | manager->GetCompiler()->AddRequiresConstructorBarrier(self, &dex_file, class_def_index); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1604 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1605 | } |
| 1606 | |
| 1607 | static void ResolveType(const ParallelCompilationManager* manager, size_t type_idx) |
| 1608 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
| 1609 | // Class derived values are more complicated, they require the linker and loader. |
| 1610 | ScopedObjectAccess soa(Thread::Current()); |
| 1611 | ClassLinker* class_linker = manager->GetClassLinker(); |
| 1612 | const DexFile& dex_file = *manager->GetDexFile(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1613 | SirtRef<mirror::DexCache> dex_cache(soa.Self(), class_linker->FindDexCache(dex_file)); |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1614 | SirtRef<mirror::ClassLoader> class_loader( |
| 1615 | soa.Self(), soa.Decode<mirror::ClassLoader*>(manager->GetClassLoader())); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1616 | mirror::Class* klass = class_linker->ResolveType(dex_file, type_idx, dex_cache, class_loader); |
| 1617 | |
| 1618 | if (klass == NULL) { |
| 1619 | CHECK(soa.Self()->IsExceptionPending()); |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 1620 | mirror::Throwable* exception = soa.Self()->GetException(NULL); |
| 1621 | VLOG(compiler) << "Exception during type resolution: " << exception->Dump(); |
Ian Rogers | dfb325e | 2013-10-30 01:00:44 -0700 | [diff] [blame] | 1622 | if (strcmp("Ljava/lang/OutOfMemoryError;", |
| 1623 | ClassHelper(exception->GetClass()).GetDescriptor()) == 0) { |
Ian Rogers | a436fde | 2013-08-27 23:34:06 -0700 | [diff] [blame] | 1624 | // There's little point continuing compilation if the heap is exhausted. |
| 1625 | LOG(FATAL) << "Out of memory during type resolution for compilation"; |
| 1626 | } |
| 1627 | soa.Self()->ClearException(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1628 | } |
| 1629 | } |
| 1630 | |
| 1631 | void CompilerDriver::ResolveDexFile(jobject class_loader, const DexFile& dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1632 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1633 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1634 | |
| 1635 | // TODO: we could resolve strings here, although the string table is largely filled with class |
| 1636 | // and method names. |
| 1637 | |
| 1638 | ParallelCompilationManager context(class_linker, class_loader, this, &dex_file, thread_pool); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1639 | if (IsImage()) { |
| 1640 | // For images we resolve all types, such as array, whereas for applications just those with |
| 1641 | // classdefs are resolved by ResolveClassFieldsAndMethods. |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1642 | timings->NewSplit("Resolve Types"); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1643 | context.ForAll(0, dex_file.NumTypeIds(), ResolveType, thread_count_); |
| 1644 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1645 | |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1646 | timings->NewSplit("Resolve MethodsAndFields"); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1647 | context.ForAll(0, dex_file.NumClassDefs(), ResolveClassFieldsAndMethods, thread_count_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1648 | } |
| 1649 | |
| 1650 | 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] | 1651 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1652 | for (size_t i = 0; i != dex_files.size(); ++i) { |
| 1653 | const DexFile* dex_file = dex_files[i]; |
| 1654 | CHECK(dex_file != NULL); |
| 1655 | VerifyDexFile(class_loader, *dex_file, thread_pool, timings); |
| 1656 | } |
| 1657 | } |
| 1658 | |
| 1659 | static void VerifyClass(const ParallelCompilationManager* manager, size_t class_def_index) |
| 1660 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
Anwar Ghuloum | 67f9941 | 2013-08-12 14:19:48 -0700 | [diff] [blame] | 1661 | ATRACE_CALL(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1662 | ScopedObjectAccess soa(Thread::Current()); |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1663 | const DexFile& dex_file = *manager->GetDexFile(); |
| 1664 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); |
| 1665 | const char* descriptor = dex_file.GetClassDescriptor(class_def); |
| 1666 | ClassLinker* class_linker = manager->GetClassLinker(); |
| 1667 | jobject jclass_loader = manager->GetClassLoader(); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1668 | SirtRef<mirror::ClassLoader> class_loader( |
| 1669 | soa.Self(), soa.Decode<mirror::ClassLoader*>(jclass_loader)); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 1670 | SirtRef<mirror::Class> klass(soa.Self(), class_linker->FindClass(soa.Self(), descriptor, |
| 1671 | class_loader)); |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1672 | if (klass.get() == nullptr) { |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1673 | CHECK(soa.Self()->IsExceptionPending()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1674 | soa.Self()->ClearException(); |
| 1675 | |
| 1676 | /* |
| 1677 | * At compile time, we can still structurally verify the class even if FindClass fails. |
| 1678 | * This is to ensure the class is structurally sound for compilation. An unsound class |
| 1679 | * will be rejected by the verifier and later skipped during compilation in the compiler. |
| 1680 | */ |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1681 | SirtRef<mirror::DexCache> dex_cache(soa.Self(), class_linker->FindDexCache(dex_file)); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1682 | std::string error_msg; |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1683 | if (verifier::MethodVerifier::VerifyClass(&dex_file, dex_cache, class_loader, &class_def, true, |
| 1684 | &error_msg) == |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1685 | verifier::MethodVerifier::kHardFailure) { |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1686 | LOG(ERROR) << "Verification failed on class " << PrettyDescriptor(descriptor) |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1687 | << " because: " << error_msg; |
| 1688 | } |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1689 | } else if (!SkipClass(jclass_loader, dex_file, klass.get())) { |
| 1690 | CHECK(klass->IsResolved()) << PrettyClass(klass.get()); |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1691 | class_linker->VerifyClass(klass); |
Ian Rogers | e6bb3b2 | 2013-08-19 21:51:45 -0700 | [diff] [blame] | 1692 | |
| 1693 | if (klass->IsErroneous()) { |
| 1694 | // ClassLinker::VerifyClass throws, which isn't useful in the compiler. |
| 1695 | CHECK(soa.Self()->IsExceptionPending()); |
| 1696 | soa.Self()->ClearException(); |
| 1697 | } |
| 1698 | |
| 1699 | CHECK(klass->IsCompileTimeVerified() || klass->IsErroneous()) |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1700 | << PrettyDescriptor(klass.get()) << ": state=" << klass->GetStatus(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1701 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1702 | soa.Self()->AssertNoPendingException(); |
| 1703 | } |
| 1704 | |
| 1705 | void CompilerDriver::VerifyDexFile(jobject class_loader, const DexFile& dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1706 | ThreadPool* thread_pool, TimingLogger* timings) { |
| 1707 | timings->NewSplit("Verify Dex File"); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1708 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1709 | ParallelCompilationManager context(class_linker, class_loader, this, &dex_file, thread_pool); |
| 1710 | context.ForAll(0, dex_file.NumClassDefs(), VerifyClass, thread_count_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1711 | } |
| 1712 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1713 | static void InitializeClass(const ParallelCompilationManager* manager, size_t class_def_index) |
| 1714 | LOCKS_EXCLUDED(Locks::mutator_lock_) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1715 | ATRACE_CALL(); |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1716 | jobject jclass_loader = manager->GetClassLoader(); |
| 1717 | const DexFile& dex_file = *manager->GetDexFile(); |
| 1718 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); |
Jeff Hao | bcdbbfe | 2013-11-08 18:03:22 -0800 | [diff] [blame] | 1719 | const DexFile::TypeId& class_type_id = dex_file.GetTypeId(class_def.class_idx_); |
| 1720 | const char* descriptor = dex_file.StringDataByIdx(class_type_id.descriptor_idx_); |
Ian Rogers | fc0e94b | 2013-09-23 23:51:32 -0700 | [diff] [blame] | 1721 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1722 | ScopedObjectAccess soa(Thread::Current()); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1723 | SirtRef<mirror::ClassLoader> class_loader(soa.Self(), |
| 1724 | soa.Decode<mirror::ClassLoader*>(jclass_loader)); |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1725 | SirtRef<mirror::Class> klass(soa.Self(), |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 1726 | manager->GetClassLinker()->FindClass(soa.Self(), descriptor, |
| 1727 | class_loader)); |
Jeff Hao | 0e49b42 | 2013-11-08 12:16:56 -0800 | [diff] [blame] | 1728 | |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1729 | if (klass.get() != nullptr && !SkipClass(jclass_loader, dex_file, klass.get())) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1730 | // Only try to initialize classes that were successfully verified. |
| 1731 | if (klass->IsVerified()) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1732 | // Attempt to initialize the class but bail if we either need to initialize the super-class |
| 1733 | // or static fields. |
| 1734 | manager->GetClassLinker()->EnsureInitialized(klass, false, false); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1735 | if (!klass->IsInitialized()) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1736 | // We don't want non-trivial class initialization occurring on multiple threads due to |
| 1737 | // deadlock problems. For example, a parent class is initialized (holding its lock) that |
| 1738 | // refers to a sub-class in its static/class initializer causing it to try to acquire the |
| 1739 | // sub-class' lock. While on a second thread the sub-class is initialized (holding its lock) |
| 1740 | // after first initializing its parents, whose locks are acquired. This leads to a |
| 1741 | // parent-to-child and a child-to-parent lock ordering and consequent potential deadlock. |
| 1742 | // We need to use an ObjectLock due to potential suspension in the interpreting code. Rather |
| 1743 | // than use a special Object for the purpose we use the Class of java.lang.Class. |
Mathieu Chartier | c528dba | 2013-11-26 12:00:11 -0800 | [diff] [blame] | 1744 | SirtRef<mirror::Class> sirt_klass(soa.Self(), klass->GetClass()); |
| 1745 | ObjectLock<mirror::Class> lock(soa.Self(), &sirt_klass); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1746 | // Attempt to initialize allowing initialization of parent classes but still not static |
| 1747 | // fields. |
| 1748 | manager->GetClassLinker()->EnsureInitialized(klass, false, true); |
| 1749 | if (!klass->IsInitialized()) { |
| 1750 | // 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] | 1751 | // marked with the $NoPreloadHolder (which implies this should not be initialized early). |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1752 | bool can_init_static_fields = manager->GetCompiler()->IsImage() && |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1753 | manager->GetCompiler()->IsImageClass(descriptor) && |
| 1754 | !StringPiece(descriptor).ends_with("$NoPreloadHolder;"); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1755 | if (can_init_static_fields) { |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1756 | VLOG(compiler) << "Initializing: " << descriptor; |
| 1757 | if (strcmp("Ljava/lang/Void;", descriptor) == 0) { |
| 1758 | // Hand initialize j.l.Void to avoid Dex file operations in un-started runtime. |
| 1759 | ObjectLock<mirror::Class> lock(soa.Self(), &klass); |
| 1760 | mirror::ObjectArray<mirror::ArtField>* fields = klass->GetSFields(); |
| 1761 | CHECK_EQ(fields->GetLength(), 1); |
| 1762 | fields->Get(0)->SetObj<false>(klass.get(), |
| 1763 | manager->GetClassLinker()->FindPrimitiveClass('V')); |
| 1764 | klass->SetStatus(mirror::Class::kStatusInitialized, soa.Self()); |
| 1765 | } else { |
| 1766 | // TODO multithreading support. We should ensure the current compilation thread has |
| 1767 | // exclusive access to the runtime and the transaction. To achieve this, we could use |
| 1768 | // a ReaderWriterMutex but we're holding the mutator lock so we fail mutex sanity |
| 1769 | // checks in Thread::AssertThreadSuspensionIsAllowable. |
| 1770 | Runtime* const runtime = Runtime::Current(); |
| 1771 | Transaction transaction; |
| 1772 | |
| 1773 | // Run the class initializer in transaction mode. |
| 1774 | runtime->EnterTransactionMode(&transaction); |
| 1775 | const mirror::Class::Status old_status = klass->GetStatus(); |
| 1776 | bool success = manager->GetClassLinker()->EnsureInitialized(klass, true, true); |
| 1777 | // TODO we detach transaction from runtime to indicate we quit the transactional |
| 1778 | // mode which prevents the GC from visiting objects modified during the transaction. |
| 1779 | // Ensure GC is not run so don't access freed objects when aborting transaction. |
| 1780 | const char* old_casue = soa.Self()->StartAssertNoThreadSuspension("Transaction end"); |
| 1781 | runtime->ExitTransactionMode(); |
| 1782 | |
| 1783 | if (!success) { |
| 1784 | CHECK(soa.Self()->IsExceptionPending()); |
| 1785 | ThrowLocation throw_location; |
| 1786 | mirror::Throwable* exception = soa.Self()->GetException(&throw_location); |
| 1787 | VLOG(compiler) << "Initialization of " << descriptor << " aborted because of " |
| 1788 | << exception->Dump(); |
| 1789 | soa.Self()->ClearException(); |
| 1790 | transaction.Abort(); |
| 1791 | CHECK_EQ(old_status, klass->GetStatus()) << "Previous class status not restored"; |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1792 | } |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1793 | soa.Self()->EndAssertNoThreadSuspension(old_casue); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1794 | } |
| 1795 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1796 | } |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1797 | soa.Self()->AssertNoPendingException(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1798 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1799 | } |
| 1800 | // Record the final class status if necessary. |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1801 | ClassReference ref(manager->GetDexFile(), class_def_index); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1802 | manager->GetCompiler()->RecordClassStatus(ref, klass->GetStatus()); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1803 | } |
| 1804 | // Clear any class not found or verification exceptions. |
| 1805 | soa.Self()->ClearException(); |
| 1806 | } |
| 1807 | |
| 1808 | void CompilerDriver::InitializeClasses(jobject jni_class_loader, const DexFile& dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1809 | ThreadPool* thread_pool, TimingLogger* timings) { |
| 1810 | timings->NewSplit("InitializeNoClinit"); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1811 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 1812 | ParallelCompilationManager context(class_linker, jni_class_loader, this, &dex_file, thread_pool); |
Sebastien Hertz | d2fe10a | 2014-01-15 10:20:56 +0100 | [diff] [blame] | 1813 | size_t thread_count; |
| 1814 | if (IsImage()) { |
| 1815 | // TODO: remove this when transactional mode supports multithreading. |
| 1816 | thread_count = 1U; |
| 1817 | } else { |
| 1818 | thread_count = thread_count_; |
| 1819 | } |
| 1820 | context.ForAll(0, dex_file.NumClassDefs(), InitializeClass, thread_count); |
| 1821 | if (IsImage()) { |
| 1822 | // Prune garbage objects created during aborted transactions. |
| 1823 | Runtime::Current()->GetHeap()->CollectGarbage(true); |
| 1824 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1825 | } |
| 1826 | |
| 1827 | void CompilerDriver::InitializeClasses(jobject class_loader, |
| 1828 | const std::vector<const DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1829 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1830 | for (size_t i = 0; i != dex_files.size(); ++i) { |
| 1831 | const DexFile* dex_file = dex_files[i]; |
| 1832 | CHECK(dex_file != NULL); |
| 1833 | InitializeClasses(class_loader, *dex_file, thread_pool, timings); |
| 1834 | } |
| 1835 | } |
| 1836 | |
| 1837 | 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] | 1838 | ThreadPool* thread_pool, TimingLogger* timings) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1839 | for (size_t i = 0; i != dex_files.size(); ++i) { |
| 1840 | const DexFile* dex_file = dex_files[i]; |
| 1841 | CHECK(dex_file != NULL); |
| 1842 | CompileDexFile(class_loader, *dex_file, thread_pool, timings); |
| 1843 | } |
| 1844 | } |
| 1845 | |
| 1846 | void CompilerDriver::CompileClass(const ParallelCompilationManager* manager, size_t class_def_index) { |
Anwar Ghuloum | 67f9941 | 2013-08-12 14:19:48 -0700 | [diff] [blame] | 1847 | ATRACE_CALL(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1848 | jobject jclass_loader = manager->GetClassLoader(); |
| 1849 | const DexFile& dex_file = *manager->GetDexFile(); |
| 1850 | const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1851 | ClassLinker* class_linker = manager->GetClassLinker(); |
| 1852 | if (SkipClass(class_linker, jclass_loader, dex_file, class_def)) { |
| 1853 | return; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1854 | } |
| 1855 | ClassReference ref(&dex_file, class_def_index); |
| 1856 | // 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] | 1857 | if (manager->GetCompiler()->verification_results_->IsClassRejected(ref)) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1858 | return; |
| 1859 | } |
| 1860 | const byte* class_data = dex_file.GetClassData(class_def); |
| 1861 | if (class_data == NULL) { |
| 1862 | // empty class, probably a marker interface |
| 1863 | return; |
| 1864 | } |
Anwar Ghuloum | 67f9941 | 2013-08-12 14:19:48 -0700 | [diff] [blame] | 1865 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1866 | // Can we run DEX-to-DEX compiler on this class ? |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 1867 | DexToDexCompilationLevel dex_to_dex_compilation_level = kDontDexToDexCompile; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1868 | { |
| 1869 | ScopedObjectAccess soa(Thread::Current()); |
Mathieu Chartier | 590fee9 | 2013-09-13 13:46:47 -0700 | [diff] [blame] | 1870 | SirtRef<mirror::ClassLoader> class_loader(soa.Self(), |
| 1871 | soa.Decode<mirror::ClassLoader*>(jclass_loader)); |
Ian Rogers | 9837939 | 2014-02-24 16:53:16 -0800 | [diff] [blame] | 1872 | dex_to_dex_compilation_level = GetDexToDexCompilationlevel(soa.Self(), class_loader, dex_file, |
| 1873 | class_def); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1874 | } |
| 1875 | ClassDataItemIterator it(dex_file, class_data); |
| 1876 | // Skip fields |
| 1877 | while (it.HasNextStaticField()) { |
| 1878 | it.Next(); |
| 1879 | } |
| 1880 | while (it.HasNextInstanceField()) { |
| 1881 | it.Next(); |
| 1882 | } |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1883 | CompilerDriver* driver = manager->GetCompiler(); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1884 | // Compile direct methods |
| 1885 | int64_t previous_direct_method_idx = -1; |
| 1886 | while (it.HasNextDirectMethod()) { |
| 1887 | uint32_t method_idx = it.GetMemberIndex(); |
| 1888 | if (method_idx == previous_direct_method_idx) { |
| 1889 | // smali can create dex files with two encoded_methods sharing the same method_idx |
| 1890 | // http://code.google.com/p/smali/issues/detail?id=119 |
| 1891 | it.Next(); |
| 1892 | continue; |
| 1893 | } |
| 1894 | previous_direct_method_idx = method_idx; |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1895 | driver->CompileMethod(it.GetMethodCodeItem(), it.GetMemberAccessFlags(), |
| 1896 | it.GetMethodInvokeType(class_def), class_def_index, |
| 1897 | method_idx, jclass_loader, dex_file, dex_to_dex_compilation_level); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1898 | it.Next(); |
| 1899 | } |
| 1900 | // Compile virtual methods |
| 1901 | int64_t previous_virtual_method_idx = -1; |
| 1902 | while (it.HasNextVirtualMethod()) { |
| 1903 | uint32_t method_idx = it.GetMemberIndex(); |
| 1904 | if (method_idx == previous_virtual_method_idx) { |
| 1905 | // smali can create dex files with two encoded_methods sharing the same method_idx |
| 1906 | // http://code.google.com/p/smali/issues/detail?id=119 |
| 1907 | it.Next(); |
| 1908 | continue; |
| 1909 | } |
| 1910 | previous_virtual_method_idx = method_idx; |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1911 | driver->CompileMethod(it.GetMethodCodeItem(), it.GetMemberAccessFlags(), |
| 1912 | it.GetMethodInvokeType(class_def), class_def_index, |
| 1913 | method_idx, jclass_loader, dex_file, dex_to_dex_compilation_level); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1914 | it.Next(); |
| 1915 | } |
| 1916 | DCHECK(!it.HasNext()); |
| 1917 | } |
| 1918 | |
| 1919 | void CompilerDriver::CompileDexFile(jobject class_loader, const DexFile& dex_file, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 1920 | ThreadPool* thread_pool, TimingLogger* timings) { |
| 1921 | timings->NewSplit("Compile Dex File"); |
Ian Rogers | be7149f | 2013-08-20 09:29:39 -0700 | [diff] [blame] | 1922 | ParallelCompilationManager context(Runtime::Current()->GetClassLinker(), class_loader, this, |
| 1923 | &dex_file, thread_pool); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1924 | context.ForAll(0, dex_file.NumClassDefs(), CompilerDriver::CompileClass, thread_count_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1925 | } |
| 1926 | |
| 1927 | void CompilerDriver::CompileMethod(const DexFile::CodeItem* code_item, uint32_t access_flags, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 1928 | InvokeType invoke_type, uint16_t class_def_idx, |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1929 | uint32_t method_idx, jobject class_loader, |
| 1930 | const DexFile& dex_file, |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 1931 | DexToDexCompilationLevel dex_to_dex_compilation_level) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1932 | CompiledMethod* compiled_method = NULL; |
| 1933 | uint64_t start_ns = NanoTime(); |
| 1934 | |
| 1935 | if ((access_flags & kAccNative) != 0) { |
Andreas Gampe | 2da8823 | 2014-02-27 12:26:20 -0800 | [diff] [blame] | 1936 | #if defined(__x86_64__) |
| 1937 | // leaving this empty will trigger the generic JNI version |
| 1938 | #else |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 1939 | compiled_method = compiler_backend_->JniCompile(*this, access_flags, method_idx, dex_file); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1940 | CHECK(compiled_method != NULL); |
Andreas Gampe | 2da8823 | 2014-02-27 12:26:20 -0800 | [diff] [blame] | 1941 | #endif |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1942 | } else if ((access_flags & kAccAbstract) != 0) { |
| 1943 | } else { |
Dragos Sbirlea | 90af14d | 2013-08-15 17:50:16 -0700 | [diff] [blame] | 1944 | MethodReference method_ref(&dex_file, method_idx); |
Brian Carlstrom | 6449c62 | 2014-02-10 23:48:36 -0800 | [diff] [blame] | 1945 | bool compile = verification_results_->IsCandidateForCompilation(method_ref, access_flags); |
Sebastien Hertz | 4d4adb1 | 2013-07-24 16:14:19 +0200 | [diff] [blame] | 1946 | if (compile) { |
buzbee | a024a06 | 2013-07-31 10:47:37 -0700 | [diff] [blame] | 1947 | // NOTE: if compiler declines to compile this method, it will return NULL. |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 1948 | compiled_method = compiler_backend_->Compile( |
| 1949 | *this, code_item, access_flags, invoke_type, class_def_idx, |
| 1950 | method_idx, class_loader, dex_file); |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 1951 | } else if (dex_to_dex_compilation_level != kDontDexToDexCompile) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1952 | // TODO: add a mode to disable DEX-to-DEX compilation ? |
Sebastien Hertz | 7502122 | 2013-07-16 18:34:50 +0200 | [diff] [blame] | 1953 | (*dex_to_dex_compiler_)(*this, code_item, access_flags, |
| 1954 | invoke_type, class_def_idx, |
| 1955 | method_idx, class_loader, dex_file, |
| 1956 | dex_to_dex_compilation_level); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1957 | } |
| 1958 | } |
| 1959 | uint64_t duration_ns = NanoTime() - start_ns; |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 1960 | if (duration_ns > MsToNs(compiler_backend_->GetMaximumCompilationTimeBeforeWarning())) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1961 | LOG(WARNING) << "Compilation of " << PrettyMethod(method_idx, dex_file) |
| 1962 | << " took " << PrettyDuration(duration_ns); |
| 1963 | } |
| 1964 | |
| 1965 | Thread* self = Thread::Current(); |
| 1966 | if (compiled_method != NULL) { |
| 1967 | MethodReference ref(&dex_file, method_idx); |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1968 | DCHECK(GetCompiledMethod(ref) == NULL) << PrettyMethod(method_idx, dex_file); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 1969 | { |
| 1970 | MutexLock mu(self, compiled_methods_lock_); |
| 1971 | compiled_methods_.Put(ref, compiled_method); |
| 1972 | } |
| 1973 | DCHECK(GetCompiledMethod(ref) != NULL) << PrettyMethod(method_idx, dex_file); |
| 1974 | } |
| 1975 | |
| 1976 | if (self->IsExceptionPending()) { |
| 1977 | ScopedObjectAccess soa(self); |
| 1978 | LOG(FATAL) << "Unexpected exception compiling: " << PrettyMethod(method_idx, dex_file) << "\n" |
| 1979 | << self->GetException(NULL)->Dump(); |
| 1980 | } |
| 1981 | } |
| 1982 | |
| 1983 | CompiledClass* CompilerDriver::GetCompiledClass(ClassReference ref) const { |
| 1984 | MutexLock mu(Thread::Current(), compiled_classes_lock_); |
| 1985 | ClassTable::const_iterator it = compiled_classes_.find(ref); |
| 1986 | if (it == compiled_classes_.end()) { |
| 1987 | return NULL; |
| 1988 | } |
| 1989 | CHECK(it->second != NULL); |
| 1990 | return it->second; |
| 1991 | } |
| 1992 | |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 1993 | void CompilerDriver::RecordClassStatus(ClassReference ref, mirror::Class::Status status) { |
| 1994 | MutexLock mu(Thread::Current(), compiled_classes_lock_); |
| 1995 | auto it = compiled_classes_.find(ref); |
| 1996 | if (it == compiled_classes_.end() || it->second->GetStatus() != status) { |
| 1997 | // An entry doesn't exist or the status is lower than the new status. |
| 1998 | if (it != compiled_classes_.end()) { |
| 1999 | CHECK_GT(status, it->second->GetStatus()); |
| 2000 | delete it->second; |
| 2001 | } |
| 2002 | switch (status) { |
| 2003 | case mirror::Class::kStatusNotReady: |
| 2004 | case mirror::Class::kStatusError: |
| 2005 | case mirror::Class::kStatusRetryVerificationAtRuntime: |
| 2006 | case mirror::Class::kStatusVerified: |
| 2007 | case mirror::Class::kStatusInitialized: |
| 2008 | break; // Expected states. |
| 2009 | default: |
| 2010 | LOG(FATAL) << "Unexpected class status for class " |
| 2011 | << PrettyDescriptor(ref.first->GetClassDescriptor(ref.first->GetClassDef(ref.second))) |
| 2012 | << " of " << status; |
| 2013 | } |
| 2014 | CompiledClass* compiled_class = new CompiledClass(status); |
| 2015 | compiled_classes_.Overwrite(ref, compiled_class); |
| 2016 | } |
| 2017 | } |
| 2018 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2019 | CompiledMethod* CompilerDriver::GetCompiledMethod(MethodReference ref) const { |
| 2020 | MutexLock mu(Thread::Current(), compiled_methods_lock_); |
| 2021 | MethodTable::const_iterator it = compiled_methods_.find(ref); |
| 2022 | if (it == compiled_methods_.end()) { |
| 2023 | return NULL; |
| 2024 | } |
| 2025 | CHECK(it->second != NULL); |
| 2026 | return it->second; |
| 2027 | } |
| 2028 | |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2029 | void CompilerDriver::AddRequiresConstructorBarrier(Thread* self, const DexFile* dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 2030 | uint16_t class_def_index) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 2031 | WriterMutexLock mu(self, freezing_constructor_lock_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2032 | freezing_constructor_classes_.insert(ClassReference(dex_file, class_def_index)); |
| 2033 | } |
| 2034 | |
| 2035 | bool CompilerDriver::RequiresConstructorBarrier(Thread* self, const DexFile* dex_file, |
Ian Rogers | 8b2c0b9 | 2013-09-19 02:56:49 -0700 | [diff] [blame] | 2036 | uint16_t class_def_index) { |
Ian Rogers | 8f3c9ae | 2013-08-20 17:26:41 -0700 | [diff] [blame] | 2037 | ReaderMutexLock mu(self, freezing_constructor_lock_); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2038 | return freezing_constructor_classes_.count(ClassReference(dex_file, class_def_index)) != 0; |
| 2039 | } |
| 2040 | |
| 2041 | bool CompilerDriver::WriteElf(const std::string& android_root, |
| 2042 | bool is_host, |
| 2043 | const std::vector<const art::DexFile*>& dex_files, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2044 | OatWriter* oat_writer, |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2045 | art::File* file) |
| 2046 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Nicolas Geoffray | f5df897 | 2014-02-14 18:37:08 +0000 | [diff] [blame] | 2047 | return compiler_backend_->WriteElf(file, oat_writer, dex_files, android_root, is_host, *this); |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2048 | } |
| 2049 | void CompilerDriver::InstructionSetToLLVMTarget(InstructionSet instruction_set, |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2050 | std::string* target_triple, |
| 2051 | std::string* target_cpu, |
| 2052 | std::string* target_attr) { |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2053 | switch (instruction_set) { |
| 2054 | case kThumb2: |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2055 | *target_triple = "thumb-none-linux-gnueabi"; |
| 2056 | *target_cpu = "cortex-a9"; |
| 2057 | *target_attr = "+thumb2,+neon,+neonfp,+vfp3,+db"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2058 | break; |
| 2059 | |
| 2060 | case kArm: |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2061 | *target_triple = "armv7-none-linux-gnueabi"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2062 | // TODO: Fix for Nexus S. |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2063 | *target_cpu = "cortex-a9"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2064 | // TODO: Fix for Xoom. |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2065 | *target_attr = "+v7,+neon,+neonfp,+vfp3,+db"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2066 | break; |
| 2067 | |
| 2068 | case kX86: |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2069 | *target_triple = "i386-pc-linux-gnu"; |
| 2070 | *target_attr = ""; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2071 | break; |
| 2072 | |
| 2073 | case kMips: |
Ian Rogers | 3d50407 | 2014-03-01 09:16:49 -0800 | [diff] [blame] | 2074 | *target_triple = "mipsel-unknown-linux"; |
| 2075 | *target_attr = "mips32r2"; |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2076 | break; |
| 2077 | |
| 2078 | default: |
| 2079 | LOG(FATAL) << "Unknown instruction set: " << instruction_set; |
| 2080 | } |
| 2081 | } |
Dave Allison | 39c3bfb | 2014-01-28 18:33:52 -0800 | [diff] [blame] | 2082 | |
| 2083 | bool CompilerDriver::ReadProfile(const std::string& filename) { |
| 2084 | VLOG(compiler) << "reading profile file " << filename; |
| 2085 | struct stat st; |
| 2086 | int err = stat(filename.c_str(), &st); |
| 2087 | if (err == -1) { |
| 2088 | VLOG(compiler) << "not found"; |
| 2089 | return false; |
| 2090 | } |
| 2091 | std::ifstream in(filename.c_str()); |
| 2092 | if (!in) { |
| 2093 | VLOG(compiler) << "profile file " << filename << " exists but can't be opened"; |
| 2094 | VLOG(compiler) << "file owner: " << st.st_uid << ":" << st.st_gid; |
| 2095 | VLOG(compiler) << "me: " << getuid() << ":" << getgid(); |
| 2096 | VLOG(compiler) << "file permissions: " << std::oct << st.st_mode; |
| 2097 | VLOG(compiler) << "errno: " << errno; |
| 2098 | return false; |
| 2099 | } |
| 2100 | // The first line contains summary information. |
| 2101 | std::string line; |
| 2102 | std::getline(in, line); |
| 2103 | if (in.eof()) { |
| 2104 | return false; |
| 2105 | } |
| 2106 | std::vector<std::string> summary_info; |
| 2107 | Split(line, '/', summary_info); |
| 2108 | if (summary_info.size() != 3) { |
| 2109 | // Bad summary info. It should be count/total/bootpath |
| 2110 | return false; |
| 2111 | } |
| 2112 | // This is the number of hits in all methods. |
| 2113 | uint32_t total_count = 0; |
| 2114 | for (int i = 0 ; i < 3; ++i) { |
| 2115 | total_count += atoi(summary_info[0].c_str()); |
| 2116 | } |
| 2117 | |
| 2118 | // Now read each line until the end of file. Each line consists of 3 fields separated by / |
| 2119 | while (!in.eof()) { |
| 2120 | std::getline(in, line); |
| 2121 | if (in.eof()) { |
| 2122 | break; |
| 2123 | } |
| 2124 | std::vector<std::string> info; |
| 2125 | Split(line, '/', info); |
| 2126 | if (info.size() != 3) { |
| 2127 | // Malformed. |
| 2128 | break; |
| 2129 | } |
| 2130 | const std::string& methodname = info[0]; |
| 2131 | uint32_t count = atoi(info[1].c_str()); |
| 2132 | uint32_t size = atoi(info[2].c_str()); |
| 2133 | double percent = (count * 100.0) / total_count; |
| 2134 | // Add it to the profile map |
| 2135 | profile_map_[methodname] = ProfileData(methodname, count, size, percent); |
| 2136 | } |
| 2137 | return true; |
| 2138 | } |
| 2139 | |
| 2140 | bool CompilerDriver::SkipCompilation(const std::string& method_name) { |
| 2141 | if (!profile_ok_) { |
| 2142 | return true; |
| 2143 | } |
| 2144 | constexpr double kThresholdPercent = 2.0; // Anything above this threshold will be compiled. |
| 2145 | |
| 2146 | // First find the method in the profile map. |
| 2147 | ProfileMap::iterator i = profile_map_.find(method_name); |
| 2148 | if (i == profile_map_.end()) { |
| 2149 | // Not in profile, no information can be determined. |
| 2150 | VLOG(compiler) << "not compiling " << method_name << " because it's not in the profile"; |
| 2151 | return true; |
| 2152 | } |
| 2153 | const ProfileData& data = i->second; |
| 2154 | bool compile = data.IsAbove(kThresholdPercent); |
| 2155 | if (compile) { |
| 2156 | LOG(INFO) << "compiling method " << method_name << " because its usage is " << |
| 2157 | data.GetPercent() << "%"; |
| 2158 | } else { |
| 2159 | VLOG(compiler) << "not compiling method " << method_name << " because usage is too low (" |
| 2160 | << data.GetPercent() << "%)"; |
| 2161 | } |
| 2162 | return !compile; |
| 2163 | } |
Brian Carlstrom | 7940e44 | 2013-07-12 13:46:57 -0700 | [diff] [blame] | 2164 | } // namespace art |