jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [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 "instrumentation.h" |
| 18 | |
Ian Rogers | c7dd295 | 2014-10-21 23:31:19 -0700 | [diff] [blame] | 19 | #include <sstream> |
| 20 | |
Ian Rogers | e63db27 | 2014-07-15 15:36:11 -0700 | [diff] [blame] | 21 | #include "arch/context.h" |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 22 | #include "art_field-inl.h" |
Andreas Gampe | 8cf9cb3 | 2017-07-19 09:28:38 -0700 | [diff] [blame] | 23 | #include "art_method-inl.h" |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 24 | #include "atomic.h" |
Andreas Gampe | 8228cdf | 2017-05-30 15:03:54 -0700 | [diff] [blame] | 25 | #include "base/callee_save_type.h" |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 26 | #include "class_linker.h" |
| 27 | #include "debugger.h" |
David Sehr | 9e734c7 | 2018-01-04 17:56:19 -0800 | [diff] [blame] | 28 | #include "dex/dex_file-inl.h" |
| 29 | #include "dex/dex_file_types.h" |
| 30 | #include "dex/dex_instruction-inl.h" |
Mathieu Chartier | d889178 | 2014-03-02 13:28:37 -0800 | [diff] [blame] | 31 | #include "entrypoints/quick/quick_alloc_entrypoints.h" |
Andreas Gampe | 8cf9cb3 | 2017-07-19 09:28:38 -0700 | [diff] [blame] | 32 | #include "entrypoints/quick/quick_entrypoints.h" |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 33 | #include "entrypoints/runtime_asm_entrypoints.h" |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 34 | #include "gc_root-inl.h" |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 35 | #include "interpreter/interpreter.h" |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 36 | #include "interpreter/interpreter_common.h" |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 37 | #include "jit/jit.h" |
| 38 | #include "jit/jit_code_cache.h" |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 39 | #include "jvalue-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 40 | #include "mirror/class-inl.h" |
| 41 | #include "mirror/dex_cache.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 42 | #include "mirror/object-inl.h" |
Andreas Gampe | 8cf9cb3 | 2017-07-19 09:28:38 -0700 | [diff] [blame] | 43 | #include "mirror/object_array-inl.h" |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 44 | #include "nth_caller_visitor.h" |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 45 | #include "oat_quick_method_header.h" |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 46 | #include "thread.h" |
| 47 | #include "thread_list.h" |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 48 | |
| 49 | namespace art { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 50 | namespace instrumentation { |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 51 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 52 | constexpr bool kVerboseInstrumentation = false; |
Sebastien Hertz | 5bfd5c9 | 2013-11-15 11:36:07 +0100 | [diff] [blame] | 53 | |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 54 | void InstrumentationListener::MethodExited(Thread* thread, |
| 55 | Handle<mirror::Object> this_object, |
| 56 | ArtMethod* method, |
| 57 | uint32_t dex_pc, |
| 58 | Handle<mirror::Object> return_value) { |
| 59 | DCHECK_EQ(method->GetInterfaceMethodIfProxy(kRuntimePointerSize)->GetReturnTypePrimitive(), |
| 60 | Primitive::kPrimNot); |
| 61 | JValue v; |
| 62 | v.SetL(return_value.Get()); |
| 63 | MethodExited(thread, this_object, method, dex_pc, v); |
| 64 | } |
| 65 | |
| 66 | void InstrumentationListener::FieldWritten(Thread* thread, |
| 67 | Handle<mirror::Object> this_object, |
| 68 | ArtMethod* method, |
| 69 | uint32_t dex_pc, |
| 70 | ArtField* field, |
| 71 | Handle<mirror::Object> field_value) { |
| 72 | DCHECK(!field->IsPrimitiveType()); |
| 73 | JValue v; |
| 74 | v.SetL(field_value.Get()); |
| 75 | FieldWritten(thread, this_object, method, dex_pc, field, v); |
| 76 | } |
| 77 | |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 78 | // Instrumentation works on non-inlined frames by updating returned PCs |
| 79 | // of compiled frames. |
| 80 | static constexpr StackVisitor::StackWalkKind kInstrumentationStackWalk = |
| 81 | StackVisitor::StackWalkKind::kSkipInlinedFrames; |
| 82 | |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 83 | class InstallStubsClassVisitor : public ClassVisitor { |
| 84 | public: |
| 85 | explicit InstallStubsClassVisitor(Instrumentation* instrumentation) |
| 86 | : instrumentation_(instrumentation) {} |
| 87 | |
Mathieu Chartier | 28357fa | 2016-10-18 16:27:40 -0700 | [diff] [blame] | 88 | bool operator()(ObjPtr<mirror::Class> klass) OVERRIDE REQUIRES(Locks::mutator_lock_) { |
| 89 | instrumentation_->InstallStubsForClass(klass.Ptr()); |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 90 | return true; // we visit all classes. |
| 91 | } |
| 92 | |
| 93 | private: |
| 94 | Instrumentation* const instrumentation_; |
| 95 | }; |
| 96 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 97 | |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 98 | Instrumentation::Instrumentation() |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 99 | : instrumentation_stubs_installed_(false), |
| 100 | entry_exit_stubs_installed_(false), |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 101 | interpreter_stubs_installed_(false), |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 102 | interpret_only_(false), |
| 103 | forced_interpret_only_(false), |
| 104 | have_method_entry_listeners_(false), |
| 105 | have_method_exit_listeners_(false), |
| 106 | have_method_unwind_listeners_(false), |
| 107 | have_dex_pc_listeners_(false), |
| 108 | have_field_read_listeners_(false), |
| 109 | have_field_write_listeners_(false), |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 110 | have_exception_thrown_listeners_(false), |
Alex Light | e814f9d | 2017-07-31 16:14:39 -0700 | [diff] [blame] | 111 | have_watched_frame_pop_listeners_(false), |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 112 | have_branch_listeners_(false), |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 113 | have_invoke_virtual_or_interface_listeners_(false), |
Alex Light | 9fb1ab1 | 2017-09-05 09:32:49 -0700 | [diff] [blame] | 114 | have_exception_handled_listeners_(false), |
Mathieu Chartier | b8aa1e4 | 2016-04-05 14:36:57 -0700 | [diff] [blame] | 115 | deoptimized_methods_lock_("deoptimized methods lock", kDeoptimizedMethodsLock), |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 116 | deoptimization_enabled_(false), |
| 117 | interpreter_handler_table_(kMainHandlerTable), |
Mathieu Chartier | 50e9331 | 2016-03-16 11:25:29 -0700 | [diff] [blame] | 118 | quick_alloc_entry_points_instrumentation_counter_(0), |
| 119 | alloc_entrypoints_instrumented_(false) { |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 120 | } |
| 121 | |
Sebastien Hertz | a10aa37 | 2015-01-21 17:30:58 +0100 | [diff] [blame] | 122 | void Instrumentation::InstallStubsForClass(mirror::Class* klass) { |
Vladimir Marko | 72ab684 | 2017-01-20 19:32:50 +0000 | [diff] [blame] | 123 | if (!klass->IsResolved()) { |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 124 | // We need the class to be resolved to install/uninstall stubs. Otherwise its methods |
| 125 | // could not be initialized or linked with regards to class inheritance. |
Vladimir Marko | 72ab684 | 2017-01-20 19:32:50 +0000 | [diff] [blame] | 126 | } else if (klass->IsErroneousResolved()) { |
| 127 | // We can't execute code in a erroneous class: do nothing. |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 128 | } else { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 129 | for (ArtMethod& method : klass->GetMethods(kRuntimePointerSize)) { |
Alex Light | 51a64d5 | 2015-12-17 13:55:59 -0800 | [diff] [blame] | 130 | InstallStubsForMethod(&method); |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 131 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 132 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 133 | } |
| 134 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 135 | static void UpdateEntrypoints(ArtMethod* method, const void* quick_code) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 136 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 137 | method->SetEntryPointFromQuickCompiledCode(quick_code); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 138 | } |
| 139 | |
Alex Light | 0fa1786 | 2017-10-24 13:43:05 -0700 | [diff] [blame] | 140 | bool Instrumentation::NeedDebugVersionFor(ArtMethod* method) const |
| 141 | REQUIRES_SHARED(Locks::mutator_lock_) { |
| 142 | return Runtime::Current()->IsJavaDebuggable() && |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 143 | !method->IsNative() && |
Alex Light | 0fa1786 | 2017-10-24 13:43:05 -0700 | [diff] [blame] | 144 | !method->IsProxyMethod() && |
| 145 | Runtime::Current()->GetRuntimeCallbacks()->IsMethodBeingInspected(method); |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 146 | } |
| 147 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 148 | void Instrumentation::InstallStubsForMethod(ArtMethod* method) { |
Alex Light | 9139e00 | 2015-10-09 15:59:48 -0700 | [diff] [blame] | 149 | if (!method->IsInvokable() || method->IsProxyMethod()) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 150 | // Do not change stubs for these methods. |
| 151 | return; |
| 152 | } |
Jeff Hao | 5680277 | 2014-08-19 10:17:36 -0700 | [diff] [blame] | 153 | // Don't stub Proxy.<init>. Note that the Proxy class itself is not a proxy class. |
| 154 | if (method->IsConstructor() && |
| 155 | method->GetDeclaringClass()->DescriptorEquals("Ljava/lang/reflect/Proxy;")) { |
Jeff Hao | db8a664 | 2014-08-14 17:18:52 -0700 | [diff] [blame] | 156 | return; |
| 157 | } |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 158 | const void* new_quick_code; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 159 | bool uninstall = !entry_exit_stubs_installed_ && !interpreter_stubs_installed_; |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 160 | Runtime* const runtime = Runtime::Current(); |
| 161 | ClassLinker* const class_linker = runtime->GetClassLinker(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 162 | bool is_class_initialized = method->GetDeclaringClass()->IsInitialized(); |
| 163 | if (uninstall) { |
| 164 | if ((forced_interpret_only_ || IsDeoptimized(method)) && !method->IsNative()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 165 | new_quick_code = GetQuickToInterpreterBridge(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 166 | } else if (is_class_initialized || !method->IsStatic() || method->IsConstructor()) { |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 167 | if (NeedDebugVersionFor(method)) { |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 168 | new_quick_code = GetQuickToInterpreterBridge(); |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 169 | } else { |
Alex Light | fc49fec | 2018-01-16 22:28:36 +0000 | [diff] [blame] | 170 | new_quick_code = class_linker->GetQuickOatCodeFor(method); |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 171 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 172 | } else { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 173 | new_quick_code = GetQuickResolutionStub(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 174 | } |
| 175 | } else { // !uninstall |
Sebastien Hertz | bae182c | 2013-12-17 10:42:03 +0100 | [diff] [blame] | 176 | if ((interpreter_stubs_installed_ || forced_interpret_only_ || IsDeoptimized(method)) && |
| 177 | !method->IsNative()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 178 | new_quick_code = GetQuickToInterpreterBridge(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 179 | } else { |
| 180 | // Do not overwrite resolution trampoline. When the trampoline initializes the method's |
| 181 | // class, all its static methods code will be set to the instrumentation entry point. |
| 182 | // For more details, see ClassLinker::FixupStaticTrampolines. |
| 183 | if (is_class_initialized || !method->IsStatic() || method->IsConstructor()) { |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 184 | if (NeedDebugVersionFor(method)) { |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 185 | // Oat code should not be used. Don't install instrumentation stub and |
| 186 | // use interpreter for instrumentation. |
| 187 | new_quick_code = GetQuickToInterpreterBridge(); |
| 188 | } else if (entry_exit_stubs_installed_) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 189 | new_quick_code = GetQuickInstrumentationEntryPoint(); |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 190 | } else { |
Alex Light | fc49fec | 2018-01-16 22:28:36 +0000 | [diff] [blame] | 191 | new_quick_code = class_linker->GetQuickOatCodeFor(method); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 192 | } |
| 193 | } else { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 194 | new_quick_code = GetQuickResolutionStub(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 195 | } |
| 196 | } |
| 197 | } |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 198 | UpdateEntrypoints(method, new_quick_code); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 199 | } |
| 200 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 201 | // Places the instrumentation exit pc as the return PC for every quick frame. This also allows |
| 202 | // deoptimization of quick frames to interpreter frames. |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 203 | // Since we may already have done this previously, we need to push new instrumentation frame before |
| 204 | // existing instrumentation frames. |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 205 | static void InstrumentationInstallStack(Thread* thread, void* arg) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 206 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 207 | struct InstallStackVisitor FINAL : public StackVisitor { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 208 | InstallStackVisitor(Thread* thread_in, Context* context, uintptr_t instrumentation_exit_pc) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 209 | : StackVisitor(thread_in, context, kInstrumentationStackWalk), |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 210 | instrumentation_stack_(thread_in->GetInstrumentationStack()), |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 211 | instrumentation_exit_pc_(instrumentation_exit_pc), |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 212 | reached_existing_instrumentation_frames_(false), instrumentation_stack_depth_(0), |
| 213 | last_return_pc_(0) { |
| 214 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 215 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 216 | bool VisitFrame() OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 217 | ArtMethod* m = GetMethod(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 218 | if (m == nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 219 | if (kVerboseInstrumentation) { |
| 220 | LOG(INFO) << " Skipping upcall. Frame " << GetFrameId(); |
| 221 | } |
| 222 | last_return_pc_ = 0; |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 223 | return true; // Ignore upcalls. |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 224 | } |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 225 | if (GetCurrentQuickFrame() == nullptr) { |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 226 | bool interpreter_frame = true; |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 227 | InstrumentationStackFrame instrumentation_frame(GetThisObject(), m, 0, GetFrameId(), |
| 228 | interpreter_frame); |
Jeff Hao | a15a81b | 2014-05-27 18:25:47 -0700 | [diff] [blame] | 229 | if (kVerboseInstrumentation) { |
| 230 | LOG(INFO) << "Pushing shadow frame " << instrumentation_frame.Dump(); |
| 231 | } |
| 232 | shadow_stack_.push_back(instrumentation_frame); |
| 233 | return true; // Continue. |
| 234 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 235 | uintptr_t return_pc = GetReturnPc(); |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 236 | if (kVerboseInstrumentation) { |
| 237 | LOG(INFO) << " Installing exit stub in " << DescribeLocation(); |
| 238 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 239 | if (return_pc == instrumentation_exit_pc_) { |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 240 | CHECK_LT(instrumentation_stack_depth_, instrumentation_stack_->size()); |
| 241 | |
| 242 | if (m->IsRuntimeMethod()) { |
| 243 | const InstrumentationStackFrame& frame = |
| 244 | instrumentation_stack_->at(instrumentation_stack_depth_); |
| 245 | if (frame.interpreter_entry_) { |
| 246 | // This instrumentation frame is for an interpreter bridge and is |
| 247 | // pushed when executing the instrumented interpreter bridge. So method |
| 248 | // enter event must have been reported. However we need to push a DEX pc |
| 249 | // into the dex_pcs_ list to match size of instrumentation stack. |
Andreas Gampe | e2abbc6 | 2017-09-15 11:59:26 -0700 | [diff] [blame] | 250 | uint32_t dex_pc = dex::kDexNoIndex; |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 251 | dex_pcs_.push_back(dex_pc); |
| 252 | last_return_pc_ = frame.return_pc_; |
| 253 | ++instrumentation_stack_depth_; |
| 254 | return true; |
| 255 | } |
| 256 | } |
| 257 | |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 258 | // We've reached a frame which has already been installed with instrumentation exit stub. |
| 259 | // We should have already installed instrumentation on previous frames. |
| 260 | reached_existing_instrumentation_frames_ = true; |
| 261 | |
Daniel Mihalyi | ca1d06c | 2014-08-18 18:45:31 +0200 | [diff] [blame] | 262 | const InstrumentationStackFrame& frame = |
| 263 | instrumentation_stack_->at(instrumentation_stack_depth_); |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 264 | CHECK_EQ(m, frame.method_) << "Expected " << ArtMethod::PrettyMethod(m) |
| 265 | << ", Found " << ArtMethod::PrettyMethod(frame.method_); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 266 | return_pc = frame.return_pc_; |
| 267 | if (kVerboseInstrumentation) { |
| 268 | LOG(INFO) << "Ignoring already instrumented " << frame.Dump(); |
| 269 | } |
| 270 | } else { |
| 271 | CHECK_NE(return_pc, 0U); |
Alex Light | 0a80b0e | 2018-02-15 15:58:37 -0800 | [diff] [blame^] | 272 | if (UNLIKELY(reached_existing_instrumentation_frames_)) { |
| 273 | std::string thread_name; |
| 274 | GetThread()->GetThreadName(thread_name); |
| 275 | uint32_t dex_pc = dex::kDexNoIndex; |
| 276 | if (last_return_pc_ != 0 && |
| 277 | GetCurrentOatQuickMethodHeader() != nullptr) { |
| 278 | dex_pc = GetCurrentOatQuickMethodHeader()->ToDexPc(m, last_return_pc_); |
| 279 | } |
| 280 | LOG(FATAL) << "While walking " << thread_name << " found existing instrumentation frames." |
| 281 | << " method is " << GetMethod()->PrettyMethod() |
| 282 | << " return_pc is " << std::hex << return_pc |
| 283 | << " dex pc: " << dex_pc; |
| 284 | UNREACHABLE(); |
| 285 | } |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 286 | InstrumentationStackFrame instrumentation_frame( |
| 287 | m->IsRuntimeMethod() ? nullptr : GetThisObject(), |
| 288 | m, |
| 289 | return_pc, |
| 290 | GetFrameId(), // A runtime method still gets a frame id. |
| 291 | false); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 292 | if (kVerboseInstrumentation) { |
| 293 | LOG(INFO) << "Pushing frame " << instrumentation_frame.Dump(); |
| 294 | } |
| 295 | |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 296 | // Insert frame at the right position so we do not corrupt the instrumentation stack. |
| 297 | // Instrumentation stack frames are in descending frame id order. |
| 298 | auto it = instrumentation_stack_->begin(); |
| 299 | for (auto end = instrumentation_stack_->end(); it != end; ++it) { |
| 300 | const InstrumentationStackFrame& current = *it; |
| 301 | if (instrumentation_frame.frame_id_ >= current.frame_id_) { |
| 302 | break; |
| 303 | } |
| 304 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 305 | instrumentation_stack_->insert(it, instrumentation_frame); |
| 306 | SetReturnPc(instrumentation_exit_pc_); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 307 | } |
Andreas Gampe | e2abbc6 | 2017-09-15 11:59:26 -0700 | [diff] [blame] | 308 | uint32_t dex_pc = dex::kDexNoIndex; |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 309 | if (last_return_pc_ != 0 && |
| 310 | GetCurrentOatQuickMethodHeader() != nullptr) { |
| 311 | dex_pc = GetCurrentOatQuickMethodHeader()->ToDexPc(m, last_return_pc_); |
| 312 | } |
| 313 | dex_pcs_.push_back(dex_pc); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 314 | last_return_pc_ = return_pc; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 315 | ++instrumentation_stack_depth_; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 316 | return true; // Continue. |
| 317 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 318 | std::deque<InstrumentationStackFrame>* const instrumentation_stack_; |
Jeff Hao | a15a81b | 2014-05-27 18:25:47 -0700 | [diff] [blame] | 319 | std::vector<InstrumentationStackFrame> shadow_stack_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 320 | std::vector<uint32_t> dex_pcs_; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 321 | const uintptr_t instrumentation_exit_pc_; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 322 | bool reached_existing_instrumentation_frames_; |
| 323 | size_t instrumentation_stack_depth_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 324 | uintptr_t last_return_pc_; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 325 | }; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 326 | if (kVerboseInstrumentation) { |
| 327 | std::string thread_name; |
| 328 | thread->GetThreadName(thread_name); |
| 329 | LOG(INFO) << "Installing exit stubs in " << thread_name; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 330 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 331 | |
| 332 | Instrumentation* instrumentation = reinterpret_cast<Instrumentation*>(arg); |
Ian Rogers | 700a402 | 2014-05-19 16:49:03 -0700 | [diff] [blame] | 333 | std::unique_ptr<Context> context(Context::Create()); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 334 | uintptr_t instrumentation_exit_pc = reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc()); |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 335 | InstallStackVisitor visitor(thread, context.get(), instrumentation_exit_pc); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 336 | visitor.WalkStack(true); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 337 | CHECK_EQ(visitor.dex_pcs_.size(), thread->GetInstrumentationStack()->size()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 338 | |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 339 | if (instrumentation->ShouldNotifyMethodEnterExitEvents()) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 340 | // Create method enter events for all methods currently on the thread's stack. We only do this |
| 341 | // if no debugger is attached to prevent from posting events twice. |
Jeff Hao | a15a81b | 2014-05-27 18:25:47 -0700 | [diff] [blame] | 342 | auto ssi = visitor.shadow_stack_.rbegin(); |
| 343 | for (auto isi = thread->GetInstrumentationStack()->rbegin(), |
| 344 | end = thread->GetInstrumentationStack()->rend(); isi != end; ++isi) { |
| 345 | while (ssi != visitor.shadow_stack_.rend() && (*ssi).frame_id_ < (*isi).frame_id_) { |
| 346 | instrumentation->MethodEnterEvent(thread, (*ssi).this_object_, (*ssi).method_, 0); |
| 347 | ++ssi; |
| 348 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 349 | uint32_t dex_pc = visitor.dex_pcs_.back(); |
| 350 | visitor.dex_pcs_.pop_back(); |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 351 | if (!isi->interpreter_entry_) { |
| 352 | instrumentation->MethodEnterEvent(thread, (*isi).this_object_, (*isi).method_, dex_pc); |
| 353 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 354 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 355 | } |
| 356 | thread->VerifyStack(); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 357 | } |
| 358 | |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 359 | void Instrumentation::InstrumentThreadStack(Thread* thread) { |
| 360 | instrumentation_stubs_installed_ = true; |
| 361 | InstrumentationInstallStack(thread, this); |
| 362 | } |
| 363 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 364 | // Removes the instrumentation exit pc as the return PC for every quick frame. |
| 365 | static void InstrumentationRestoreStack(Thread* thread, void* arg) |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 366 | REQUIRES(Locks::mutator_lock_) { |
| 367 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
| 368 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 369 | struct RestoreStackVisitor FINAL : public StackVisitor { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 370 | RestoreStackVisitor(Thread* thread_in, uintptr_t instrumentation_exit_pc, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 371 | Instrumentation* instrumentation) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 372 | : StackVisitor(thread_in, nullptr, kInstrumentationStackWalk), |
| 373 | thread_(thread_in), |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 374 | instrumentation_exit_pc_(instrumentation_exit_pc), |
| 375 | instrumentation_(instrumentation), |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 376 | instrumentation_stack_(thread_in->GetInstrumentationStack()), |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 377 | frames_removed_(0) {} |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 378 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 379 | bool VisitFrame() OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 380 | if (instrumentation_stack_->size() == 0) { |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 381 | return false; // Stop. |
| 382 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 383 | ArtMethod* m = GetMethod(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 384 | if (GetCurrentQuickFrame() == nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 385 | if (kVerboseInstrumentation) { |
Daniel Mihalyi | ca1d06c | 2014-08-18 18:45:31 +0200 | [diff] [blame] | 386 | LOG(INFO) << " Ignoring a shadow frame. Frame " << GetFrameId() |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 387 | << " Method=" << ArtMethod::PrettyMethod(m); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 388 | } |
| 389 | return true; // Ignore shadow frames. |
| 390 | } |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 391 | if (m == nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 392 | if (kVerboseInstrumentation) { |
| 393 | LOG(INFO) << " Skipping upcall. Frame " << GetFrameId(); |
| 394 | } |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 395 | return true; // Ignore upcalls. |
| 396 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 397 | bool removed_stub = false; |
| 398 | // TODO: make this search more efficient? |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 399 | const size_t frameId = GetFrameId(); |
| 400 | for (const InstrumentationStackFrame& instrumentation_frame : *instrumentation_stack_) { |
| 401 | if (instrumentation_frame.frame_id_ == frameId) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 402 | if (kVerboseInstrumentation) { |
| 403 | LOG(INFO) << " Removing exit stub in " << DescribeLocation(); |
| 404 | } |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 405 | if (instrumentation_frame.interpreter_entry_) { |
Andreas Gampe | 8228cdf | 2017-05-30 15:03:54 -0700 | [diff] [blame] | 406 | CHECK(m == Runtime::Current()->GetCalleeSaveMethod(CalleeSaveType::kSaveRefsAndArgs)); |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 407 | } else { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 408 | CHECK(m == instrumentation_frame.method_) << ArtMethod::PrettyMethod(m); |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 409 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 410 | SetReturnPc(instrumentation_frame.return_pc_); |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 411 | if (instrumentation_->ShouldNotifyMethodEnterExitEvents() && |
| 412 | !m->IsRuntimeMethod()) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 413 | // Create the method exit events. As the methods didn't really exit the result is 0. |
| 414 | // We only do this if no debugger is attached to prevent from posting events twice. |
| 415 | instrumentation_->MethodExitEvent(thread_, instrumentation_frame.this_object_, m, |
| 416 | GetDexPc(), JValue()); |
| 417 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 418 | frames_removed_++; |
| 419 | removed_stub = true; |
| 420 | break; |
| 421 | } |
| 422 | } |
| 423 | if (!removed_stub) { |
| 424 | if (kVerboseInstrumentation) { |
| 425 | LOG(INFO) << " No exit stub in " << DescribeLocation(); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 426 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 427 | } |
| 428 | return true; // Continue. |
| 429 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 430 | Thread* const thread_; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 431 | const uintptr_t instrumentation_exit_pc_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 432 | Instrumentation* const instrumentation_; |
| 433 | std::deque<instrumentation::InstrumentationStackFrame>* const instrumentation_stack_; |
| 434 | size_t frames_removed_; |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 435 | }; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 436 | if (kVerboseInstrumentation) { |
| 437 | std::string thread_name; |
| 438 | thread->GetThreadName(thread_name); |
| 439 | LOG(INFO) << "Removing exit stubs in " << thread_name; |
| 440 | } |
| 441 | std::deque<instrumentation::InstrumentationStackFrame>* stack = thread->GetInstrumentationStack(); |
| 442 | if (stack->size() > 0) { |
| 443 | Instrumentation* instrumentation = reinterpret_cast<Instrumentation*>(arg); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 444 | uintptr_t instrumentation_exit_pc = |
| 445 | reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 446 | RestoreStackVisitor visitor(thread, instrumentation_exit_pc, instrumentation); |
| 447 | visitor.WalkStack(true); |
| 448 | CHECK_EQ(visitor.frames_removed_, stack->size()); |
| 449 | while (stack->size() > 0) { |
| 450 | stack->pop_front(); |
| 451 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 452 | } |
| 453 | } |
| 454 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 455 | static bool HasEvent(Instrumentation::InstrumentationEvent expected, uint32_t events) { |
| 456 | return (events & expected) != 0; |
| 457 | } |
| 458 | |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 459 | static void PotentiallyAddListenerTo(Instrumentation::InstrumentationEvent event, |
| 460 | uint32_t events, |
| 461 | std::list<InstrumentationListener*>& list, |
| 462 | InstrumentationListener* listener, |
| 463 | bool* has_listener) |
| 464 | REQUIRES(Locks::mutator_lock_, !Locks::thread_list_lock_, !Locks::classlinker_classes_lock_) { |
| 465 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
| 466 | if (!HasEvent(event, events)) { |
| 467 | return; |
| 468 | } |
| 469 | // If there is a free slot in the list, we insert the listener in that slot. |
| 470 | // Otherwise we add it to the end of the list. |
| 471 | auto it = std::find(list.begin(), list.end(), nullptr); |
| 472 | if (it != list.end()) { |
| 473 | *it = listener; |
| 474 | } else { |
| 475 | list.push_back(listener); |
| 476 | } |
| 477 | *has_listener = true; |
| 478 | } |
| 479 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 480 | void Instrumentation::AddListener(InstrumentationListener* listener, uint32_t events) { |
| 481 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 482 | PotentiallyAddListenerTo(kMethodEntered, |
| 483 | events, |
| 484 | method_entry_listeners_, |
| 485 | listener, |
| 486 | &have_method_entry_listeners_); |
| 487 | PotentiallyAddListenerTo(kMethodExited, |
| 488 | events, |
| 489 | method_exit_listeners_, |
| 490 | listener, |
| 491 | &have_method_exit_listeners_); |
| 492 | PotentiallyAddListenerTo(kMethodUnwind, |
| 493 | events, |
| 494 | method_unwind_listeners_, |
| 495 | listener, |
| 496 | &have_method_unwind_listeners_); |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 497 | PotentiallyAddListenerTo(kBranch, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 498 | events, |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 499 | branch_listeners_, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 500 | listener, |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 501 | &have_branch_listeners_); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 502 | PotentiallyAddListenerTo(kInvokeVirtualOrInterface, |
| 503 | events, |
| 504 | invoke_virtual_or_interface_listeners_, |
| 505 | listener, |
| 506 | &have_invoke_virtual_or_interface_listeners_); |
| 507 | PotentiallyAddListenerTo(kDexPcMoved, |
| 508 | events, |
| 509 | dex_pc_listeners_, |
| 510 | listener, |
| 511 | &have_dex_pc_listeners_); |
| 512 | PotentiallyAddListenerTo(kFieldRead, |
| 513 | events, |
| 514 | field_read_listeners_, |
| 515 | listener, |
| 516 | &have_field_read_listeners_); |
| 517 | PotentiallyAddListenerTo(kFieldWritten, |
| 518 | events, |
| 519 | field_write_listeners_, |
| 520 | listener, |
| 521 | &have_field_write_listeners_); |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 522 | PotentiallyAddListenerTo(kExceptionThrown, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 523 | events, |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 524 | exception_thrown_listeners_, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 525 | listener, |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 526 | &have_exception_thrown_listeners_); |
Alex Light | e814f9d | 2017-07-31 16:14:39 -0700 | [diff] [blame] | 527 | PotentiallyAddListenerTo(kWatchedFramePop, |
| 528 | events, |
| 529 | watched_frame_pop_listeners_, |
| 530 | listener, |
| 531 | &have_watched_frame_pop_listeners_); |
Alex Light | 9fb1ab1 | 2017-09-05 09:32:49 -0700 | [diff] [blame] | 532 | PotentiallyAddListenerTo(kExceptionHandled, |
| 533 | events, |
| 534 | exception_handled_listeners_, |
| 535 | listener, |
| 536 | &have_exception_handled_listeners_); |
Sebastien Hertz | ee1997a | 2013-09-19 14:47:09 +0200 | [diff] [blame] | 537 | UpdateInterpreterHandlerTable(); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 538 | } |
| 539 | |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 540 | static void PotentiallyRemoveListenerFrom(Instrumentation::InstrumentationEvent event, |
| 541 | uint32_t events, |
| 542 | std::list<InstrumentationListener*>& list, |
| 543 | InstrumentationListener* listener, |
| 544 | bool* has_listener) |
| 545 | REQUIRES(Locks::mutator_lock_, !Locks::thread_list_lock_, !Locks::classlinker_classes_lock_) { |
| 546 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
| 547 | if (!HasEvent(event, events)) { |
| 548 | return; |
| 549 | } |
| 550 | auto it = std::find(list.begin(), list.end(), listener); |
| 551 | if (it != list.end()) { |
| 552 | // Just update the entry, do not remove from the list. Removing entries in the list |
| 553 | // is unsafe when mutators are iterating over it. |
| 554 | *it = nullptr; |
| 555 | } |
| 556 | |
| 557 | // Check if the list contains any non-null listener, and update 'has_listener'. |
| 558 | for (InstrumentationListener* l : list) { |
| 559 | if (l != nullptr) { |
| 560 | *has_listener = true; |
| 561 | return; |
| 562 | } |
| 563 | } |
| 564 | *has_listener = false; |
| 565 | } |
| 566 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 567 | void Instrumentation::RemoveListener(InstrumentationListener* listener, uint32_t events) { |
| 568 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 569 | PotentiallyRemoveListenerFrom(kMethodEntered, |
| 570 | events, |
| 571 | method_entry_listeners_, |
| 572 | listener, |
| 573 | &have_method_entry_listeners_); |
| 574 | PotentiallyRemoveListenerFrom(kMethodExited, |
| 575 | events, |
| 576 | method_exit_listeners_, |
| 577 | listener, |
| 578 | &have_method_exit_listeners_); |
| 579 | PotentiallyRemoveListenerFrom(kMethodUnwind, |
| 580 | events, |
| 581 | method_unwind_listeners_, |
| 582 | listener, |
| 583 | &have_method_unwind_listeners_); |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 584 | PotentiallyRemoveListenerFrom(kBranch, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 585 | events, |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 586 | branch_listeners_, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 587 | listener, |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 588 | &have_branch_listeners_); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 589 | PotentiallyRemoveListenerFrom(kInvokeVirtualOrInterface, |
| 590 | events, |
| 591 | invoke_virtual_or_interface_listeners_, |
| 592 | listener, |
| 593 | &have_invoke_virtual_or_interface_listeners_); |
| 594 | PotentiallyRemoveListenerFrom(kDexPcMoved, |
| 595 | events, |
| 596 | dex_pc_listeners_, |
| 597 | listener, |
| 598 | &have_dex_pc_listeners_); |
| 599 | PotentiallyRemoveListenerFrom(kFieldRead, |
| 600 | events, |
| 601 | field_read_listeners_, |
| 602 | listener, |
| 603 | &have_field_read_listeners_); |
| 604 | PotentiallyRemoveListenerFrom(kFieldWritten, |
| 605 | events, |
| 606 | field_write_listeners_, |
| 607 | listener, |
| 608 | &have_field_write_listeners_); |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 609 | PotentiallyRemoveListenerFrom(kExceptionThrown, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 610 | events, |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 611 | exception_thrown_listeners_, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 612 | listener, |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 613 | &have_exception_thrown_listeners_); |
Alex Light | e814f9d | 2017-07-31 16:14:39 -0700 | [diff] [blame] | 614 | PotentiallyRemoveListenerFrom(kWatchedFramePop, |
| 615 | events, |
| 616 | watched_frame_pop_listeners_, |
| 617 | listener, |
| 618 | &have_watched_frame_pop_listeners_); |
Alex Light | 9fb1ab1 | 2017-09-05 09:32:49 -0700 | [diff] [blame] | 619 | PotentiallyRemoveListenerFrom(kExceptionHandled, |
| 620 | events, |
| 621 | exception_handled_listeners_, |
| 622 | listener, |
| 623 | &have_exception_handled_listeners_); |
Sebastien Hertz | ee1997a | 2013-09-19 14:47:09 +0200 | [diff] [blame] | 624 | UpdateInterpreterHandlerTable(); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 625 | } |
| 626 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 627 | Instrumentation::InstrumentationLevel Instrumentation::GetCurrentInstrumentationLevel() const { |
Alex Light | 4ba388a | 2017-01-27 10:26:49 -0800 | [diff] [blame] | 628 | if (interpreter_stubs_installed_) { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 629 | return InstrumentationLevel::kInstrumentWithInterpreter; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 630 | } else if (entry_exit_stubs_installed_) { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 631 | return InstrumentationLevel::kInstrumentWithInstrumentationStubs; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 632 | } else { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 633 | return InstrumentationLevel::kInstrumentNothing; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 634 | } |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 635 | } |
| 636 | |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 637 | bool Instrumentation::RequiresInstrumentationInstallation(InstrumentationLevel new_level) const { |
Alex Light | 4ba388a | 2017-01-27 10:26:49 -0800 | [diff] [blame] | 638 | // We need to reinstall instrumentation if we go to a different level. |
| 639 | return GetCurrentInstrumentationLevel() != new_level; |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 640 | } |
| 641 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 642 | void Instrumentation::ConfigureStubs(const char* key, InstrumentationLevel desired_level) { |
| 643 | // Store the instrumentation level for this key or remove it. |
| 644 | if (desired_level == InstrumentationLevel::kInstrumentNothing) { |
| 645 | // The client no longer needs instrumentation. |
| 646 | requested_instrumentation_levels_.erase(key); |
| 647 | } else { |
| 648 | // The client needs instrumentation. |
| 649 | requested_instrumentation_levels_.Overwrite(key, desired_level); |
| 650 | } |
| 651 | |
| 652 | // Look for the highest required instrumentation level. |
| 653 | InstrumentationLevel requested_level = InstrumentationLevel::kInstrumentNothing; |
| 654 | for (const auto& v : requested_instrumentation_levels_) { |
| 655 | requested_level = std::max(requested_level, v.second); |
| 656 | } |
| 657 | |
| 658 | interpret_only_ = (requested_level == InstrumentationLevel::kInstrumentWithInterpreter) || |
| 659 | forced_interpret_only_; |
| 660 | |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 661 | if (!RequiresInstrumentationInstallation(requested_level)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 662 | // We're already set. |
| 663 | return; |
| 664 | } |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 665 | Thread* const self = Thread::Current(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 666 | Runtime* runtime = Runtime::Current(); |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 667 | Locks::mutator_lock_->AssertExclusiveHeld(self); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 668 | Locks::thread_list_lock_->AssertNotHeld(self); |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 669 | if (requested_level > InstrumentationLevel::kInstrumentNothing) { |
Alex Light | 4ba388a | 2017-01-27 10:26:49 -0800 | [diff] [blame] | 670 | if (requested_level == InstrumentationLevel::kInstrumentWithInterpreter) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 671 | interpreter_stubs_installed_ = true; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 672 | entry_exit_stubs_installed_ = true; |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 673 | } else { |
| 674 | CHECK_EQ(requested_level, InstrumentationLevel::kInstrumentWithInstrumentationStubs); |
| 675 | entry_exit_stubs_installed_ = true; |
| 676 | interpreter_stubs_installed_ = false; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 677 | } |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 678 | InstallStubsClassVisitor visitor(this); |
| 679 | runtime->GetClassLinker()->VisitClasses(&visitor); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 680 | instrumentation_stubs_installed_ = true; |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 681 | MutexLock mu(self, *Locks::thread_list_lock_); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 682 | runtime->GetThreadList()->ForEach(InstrumentationInstallStack, this); |
| 683 | } else { |
| 684 | interpreter_stubs_installed_ = false; |
| 685 | entry_exit_stubs_installed_ = false; |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 686 | InstallStubsClassVisitor visitor(this); |
| 687 | runtime->GetClassLinker()->VisitClasses(&visitor); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 688 | // Restore stack only if there is no method currently deoptimized. |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 689 | bool empty; |
| 690 | { |
| 691 | ReaderMutexLock mu(self, deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 692 | empty = IsDeoptimizedMethodsEmpty(); // Avoid lock violation. |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 693 | } |
| 694 | if (empty) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 695 | MutexLock mu(self, *Locks::thread_list_lock_); |
| 696 | Runtime::Current()->GetThreadList()->ForEach(InstrumentationRestoreStack, this); |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 697 | // Only do this after restoring, as walking the stack when restoring will see |
| 698 | // the instrumentation exit pc. |
| 699 | instrumentation_stubs_installed_ = false; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 700 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 701 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 702 | } |
| 703 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 704 | static void ResetQuickAllocEntryPointsForThread(Thread* thread, void* arg ATTRIBUTE_UNUSED) { |
Mathieu Chartier | 5ace201 | 2016-11-30 10:15:41 -0800 | [diff] [blame] | 705 | thread->ResetQuickAllocEntryPointsForThread(kUseReadBarrier && thread->GetIsGcMarking()); |
Ian Rogers | fa82427 | 2013-11-05 16:12:57 -0800 | [diff] [blame] | 706 | } |
| 707 | |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 708 | void Instrumentation::SetEntrypointsInstrumented(bool instrumented) { |
| 709 | Thread* self = Thread::Current(); |
Mathieu Chartier | 661974a | 2014-01-09 11:23:53 -0800 | [diff] [blame] | 710 | Runtime* runtime = Runtime::Current(); |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 711 | Locks::mutator_lock_->AssertNotHeld(self); |
| 712 | Locks::instrument_entrypoints_lock_->AssertHeld(self); |
| 713 | if (runtime->IsStarted()) { |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 714 | ScopedSuspendAll ssa(__FUNCTION__); |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 715 | MutexLock mu(self, *Locks::runtime_shutdown_lock_); |
Mathieu Chartier | 661974a | 2014-01-09 11:23:53 -0800 | [diff] [blame] | 716 | SetQuickAllocEntryPointsInstrumented(instrumented); |
| 717 | ResetQuickAllocEntryPoints(); |
Mathieu Chartier | 50e9331 | 2016-03-16 11:25:29 -0700 | [diff] [blame] | 718 | alloc_entrypoints_instrumented_ = instrumented; |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 719 | } else { |
| 720 | MutexLock mu(self, *Locks::runtime_shutdown_lock_); |
| 721 | SetQuickAllocEntryPointsInstrumented(instrumented); |
Andreas Gampe | 157c77e | 2016-10-17 17:44:41 -0700 | [diff] [blame] | 722 | |
| 723 | // Note: ResetQuickAllocEntryPoints only works when the runtime is started. Manually run the |
| 724 | // update for just this thread. |
Andreas Gampe | 162ae50 | 2016-10-18 10:03:42 -0700 | [diff] [blame] | 725 | // Note: self may be null. One of those paths is setting instrumentation in the Heap |
| 726 | // constructor for gcstress mode. |
| 727 | if (self != nullptr) { |
| 728 | ResetQuickAllocEntryPointsForThread(self, nullptr); |
| 729 | } |
Andreas Gampe | 157c77e | 2016-10-17 17:44:41 -0700 | [diff] [blame] | 730 | |
Mathieu Chartier | 50e9331 | 2016-03-16 11:25:29 -0700 | [diff] [blame] | 731 | alloc_entrypoints_instrumented_ = instrumented; |
Mathieu Chartier | 661974a | 2014-01-09 11:23:53 -0800 | [diff] [blame] | 732 | } |
| 733 | } |
| 734 | |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 735 | void Instrumentation::InstrumentQuickAllocEntryPoints() { |
| 736 | MutexLock mu(Thread::Current(), *Locks::instrument_entrypoints_lock_); |
| 737 | InstrumentQuickAllocEntryPointsLocked(); |
Ian Rogers | fa82427 | 2013-11-05 16:12:57 -0800 | [diff] [blame] | 738 | } |
| 739 | |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 740 | void Instrumentation::UninstrumentQuickAllocEntryPoints() { |
| 741 | MutexLock mu(Thread::Current(), *Locks::instrument_entrypoints_lock_); |
| 742 | UninstrumentQuickAllocEntryPointsLocked(); |
| 743 | } |
| 744 | |
| 745 | void Instrumentation::InstrumentQuickAllocEntryPointsLocked() { |
| 746 | Locks::instrument_entrypoints_lock_->AssertHeld(Thread::Current()); |
| 747 | if (quick_alloc_entry_points_instrumentation_counter_ == 0) { |
| 748 | SetEntrypointsInstrumented(true); |
Mathieu Chartier | cbb2d20 | 2013-11-14 17:45:16 -0800 | [diff] [blame] | 749 | } |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 750 | ++quick_alloc_entry_points_instrumentation_counter_; |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 751 | } |
| 752 | |
| 753 | void Instrumentation::UninstrumentQuickAllocEntryPointsLocked() { |
| 754 | Locks::instrument_entrypoints_lock_->AssertHeld(Thread::Current()); |
| 755 | CHECK_GT(quick_alloc_entry_points_instrumentation_counter_, 0U); |
| 756 | --quick_alloc_entry_points_instrumentation_counter_; |
| 757 | if (quick_alloc_entry_points_instrumentation_counter_ == 0) { |
| 758 | SetEntrypointsInstrumented(false); |
| 759 | } |
Mathieu Chartier | cbb2d20 | 2013-11-14 17:45:16 -0800 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | void Instrumentation::ResetQuickAllocEntryPoints() { |
| 763 | Runtime* runtime = Runtime::Current(); |
| 764 | if (runtime->IsStarted()) { |
Mathieu Chartier | e6da9af | 2013-12-16 11:54:42 -0800 | [diff] [blame] | 765 | MutexLock mu(Thread::Current(), *Locks::thread_list_lock_); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 766 | runtime->GetThreadList()->ForEach(ResetQuickAllocEntryPointsForThread, nullptr); |
Ian Rogers | fa82427 | 2013-11-05 16:12:57 -0800 | [diff] [blame] | 767 | } |
| 768 | } |
| 769 | |
Mingyao Yang | 3fd448a | 2016-05-10 14:30:41 -0700 | [diff] [blame] | 770 | void Instrumentation::UpdateMethodsCodeImpl(ArtMethod* method, const void* quick_code) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 771 | const void* new_quick_code; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 772 | if (LIKELY(!instrumentation_stubs_installed_)) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 773 | new_quick_code = quick_code; |
Jeff Hao | 65d15d9 | 2013-07-16 16:39:33 -0700 | [diff] [blame] | 774 | } else { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 775 | if ((interpreter_stubs_installed_ || IsDeoptimized(method)) && !method->IsNative()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 776 | new_quick_code = GetQuickToInterpreterBridge(); |
Jeff Hao | 65d15d9 | 2013-07-16 16:39:33 -0700 | [diff] [blame] | 777 | } else { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 778 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 779 | if (class_linker->IsQuickResolutionStub(quick_code) || |
| 780 | class_linker->IsQuickToInterpreterBridge(quick_code)) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 781 | new_quick_code = quick_code; |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 782 | } else if (entry_exit_stubs_installed_) { |
| 783 | new_quick_code = GetQuickInstrumentationEntryPoint(); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 784 | } else { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 785 | new_quick_code = quick_code; |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 786 | } |
Jeff Hao | 65d15d9 | 2013-07-16 16:39:33 -0700 | [diff] [blame] | 787 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 788 | } |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 789 | UpdateEntrypoints(method, new_quick_code); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 790 | } |
| 791 | |
Nicolas Geoffray | a6e0e7d | 2018-01-26 13:16:50 +0000 | [diff] [blame] | 792 | void Instrumentation::UpdateNativeMethodsCodeToJitCode(ArtMethod* method, const void* quick_code) { |
| 793 | // We don't do any read barrier on `method`'s declaring class in this code, as the JIT might |
| 794 | // enter here on a soon-to-be deleted ArtMethod. Updating the entrypoint is OK though, as |
| 795 | // the ArtMethod is still in memory. |
| 796 | const void* new_quick_code = quick_code; |
| 797 | if (UNLIKELY(instrumentation_stubs_installed_) && entry_exit_stubs_installed_) { |
| 798 | new_quick_code = GetQuickInstrumentationEntryPoint(); |
| 799 | } |
| 800 | UpdateEntrypoints(method, new_quick_code); |
| 801 | } |
| 802 | |
Mingyao Yang | 3fd448a | 2016-05-10 14:30:41 -0700 | [diff] [blame] | 803 | void Instrumentation::UpdateMethodsCode(ArtMethod* method, const void* quick_code) { |
| 804 | DCHECK(method->GetDeclaringClass()->IsResolved()); |
| 805 | UpdateMethodsCodeImpl(method, quick_code); |
| 806 | } |
| 807 | |
Alex Light | 0a5ec3d | 2017-07-25 16:50:26 -0700 | [diff] [blame] | 808 | void Instrumentation::UpdateMethodsCodeToInterpreterEntryPoint(ArtMethod* method) { |
| 809 | UpdateMethodsCodeImpl(method, GetQuickToInterpreterBridge()); |
| 810 | } |
| 811 | |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 812 | void Instrumentation::UpdateMethodsCodeForJavaDebuggable(ArtMethod* method, |
| 813 | const void* quick_code) { |
| 814 | // When the runtime is set to Java debuggable, we may update the entry points of |
| 815 | // all methods of a class to the interpreter bridge. A method's declaring class |
| 816 | // might not be in resolved state yet in that case, so we bypass the DCHECK in |
| 817 | // UpdateMethodsCode. |
Mingyao Yang | 3fd448a | 2016-05-10 14:30:41 -0700 | [diff] [blame] | 818 | UpdateMethodsCodeImpl(method, quick_code); |
| 819 | } |
| 820 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 821 | bool Instrumentation::AddDeoptimizedMethod(ArtMethod* method) { |
| 822 | if (IsDeoptimizedMethod(method)) { |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 823 | // Already in the map. Return. |
| 824 | return false; |
| 825 | } |
| 826 | // Not found. Add it. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 827 | deoptimized_methods_.insert(method); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 828 | return true; |
| 829 | } |
| 830 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 831 | bool Instrumentation::IsDeoptimizedMethod(ArtMethod* method) { |
| 832 | return deoptimized_methods_.find(method) != deoptimized_methods_.end(); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 833 | } |
| 834 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 835 | ArtMethod* Instrumentation::BeginDeoptimizedMethod() { |
| 836 | if (deoptimized_methods_.empty()) { |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 837 | // Empty. |
| 838 | return nullptr; |
| 839 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 840 | return *deoptimized_methods_.begin(); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 841 | } |
| 842 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 843 | bool Instrumentation::RemoveDeoptimizedMethod(ArtMethod* method) { |
| 844 | auto it = deoptimized_methods_.find(method); |
| 845 | if (it == deoptimized_methods_.end()) { |
| 846 | return false; |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 847 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 848 | deoptimized_methods_.erase(it); |
| 849 | return true; |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 850 | } |
| 851 | |
| 852 | bool Instrumentation::IsDeoptimizedMethodsEmpty() const { |
| 853 | return deoptimized_methods_.empty(); |
| 854 | } |
| 855 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 856 | void Instrumentation::Deoptimize(ArtMethod* method) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 857 | CHECK(!method->IsNative()); |
| 858 | CHECK(!method->IsProxyMethod()); |
Alex Light | 9139e00 | 2015-10-09 15:59:48 -0700 | [diff] [blame] | 859 | CHECK(method->IsInvokable()); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 860 | |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 861 | Thread* self = Thread::Current(); |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 862 | { |
| 863 | WriterMutexLock mu(self, deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 864 | bool has_not_been_deoptimized = AddDeoptimizedMethod(method); |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 865 | CHECK(has_not_been_deoptimized) << "Method " << ArtMethod::PrettyMethod(method) |
Daniel Mihalyi | ca1d06c | 2014-08-18 18:45:31 +0200 | [diff] [blame] | 866 | << " is already deoptimized"; |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 867 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 868 | if (!interpreter_stubs_installed_) { |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 869 | UpdateEntrypoints(method, GetQuickInstrumentationEntryPoint()); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 870 | |
| 871 | // Install instrumentation exit stub and instrumentation frames. We may already have installed |
| 872 | // these previously so it will only cover the newly created frames. |
| 873 | instrumentation_stubs_installed_ = true; |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 874 | MutexLock mu(self, *Locks::thread_list_lock_); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 875 | Runtime::Current()->GetThreadList()->ForEach(InstrumentationInstallStack, this); |
| 876 | } |
| 877 | } |
| 878 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 879 | void Instrumentation::Undeoptimize(ArtMethod* method) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 880 | CHECK(!method->IsNative()); |
| 881 | CHECK(!method->IsProxyMethod()); |
Alex Light | 9139e00 | 2015-10-09 15:59:48 -0700 | [diff] [blame] | 882 | CHECK(method->IsInvokable()); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 883 | |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 884 | Thread* self = Thread::Current(); |
| 885 | bool empty; |
| 886 | { |
| 887 | WriterMutexLock mu(self, deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 888 | bool found_and_erased = RemoveDeoptimizedMethod(method); |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 889 | CHECK(found_and_erased) << "Method " << ArtMethod::PrettyMethod(method) |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 890 | << " is not deoptimized"; |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 891 | empty = IsDeoptimizedMethodsEmpty(); |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 892 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 893 | |
| 894 | // Restore code and possibly stack only if we did not deoptimize everything. |
| 895 | if (!interpreter_stubs_installed_) { |
| 896 | // Restore its code or resolution trampoline. |
| 897 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 898 | if (method->IsStatic() && !method->IsConstructor() && |
| 899 | !method->GetDeclaringClass()->IsInitialized()) { |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 900 | UpdateEntrypoints(method, GetQuickResolutionStub()); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 901 | } else { |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 902 | const void* quick_code = NeedDebugVersionFor(method) |
| 903 | ? GetQuickToInterpreterBridge() |
Alex Light | fc49fec | 2018-01-16 22:28:36 +0000 | [diff] [blame] | 904 | : class_linker->GetQuickOatCodeFor(method); |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 905 | UpdateEntrypoints(method, quick_code); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | // If there is no deoptimized method left, we can restore the stack of each thread. |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 909 | if (empty) { |
| 910 | MutexLock mu(self, *Locks::thread_list_lock_); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 911 | Runtime::Current()->GetThreadList()->ForEach(InstrumentationRestoreStack, this); |
| 912 | instrumentation_stubs_installed_ = false; |
| 913 | } |
| 914 | } |
| 915 | } |
| 916 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 917 | bool Instrumentation::IsDeoptimized(ArtMethod* method) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 918 | DCHECK(method != nullptr); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 919 | ReaderMutexLock mu(Thread::Current(), deoptimized_methods_lock_); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 920 | return IsDeoptimizedMethod(method); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 921 | } |
| 922 | |
| 923 | void Instrumentation::EnableDeoptimization() { |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 924 | ReaderMutexLock mu(Thread::Current(), deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 925 | CHECK(IsDeoptimizedMethodsEmpty()); |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 926 | CHECK_EQ(deoptimization_enabled_, false); |
| 927 | deoptimization_enabled_ = true; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 928 | } |
| 929 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 930 | void Instrumentation::DisableDeoptimization(const char* key) { |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 931 | CHECK_EQ(deoptimization_enabled_, true); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 932 | // If we deoptimized everything, undo it. |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 933 | InstrumentationLevel level = GetCurrentInstrumentationLevel(); |
| 934 | if (level == InstrumentationLevel::kInstrumentWithInterpreter) { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 935 | UndeoptimizeEverything(key); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 936 | } |
| 937 | // Undeoptimized selected methods. |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 938 | while (true) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 939 | ArtMethod* method; |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 940 | { |
| 941 | ReaderMutexLock mu(Thread::Current(), deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 942 | if (IsDeoptimizedMethodsEmpty()) { |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 943 | break; |
| 944 | } |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 945 | method = BeginDeoptimizedMethod(); |
| 946 | CHECK(method != nullptr); |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 947 | } |
| 948 | Undeoptimize(method); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 949 | } |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 950 | deoptimization_enabled_ = false; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 951 | } |
| 952 | |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 953 | // Indicates if instrumentation should notify method enter/exit events to the listeners. |
| 954 | bool Instrumentation::ShouldNotifyMethodEnterExitEvents() const { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 955 | if (!HasMethodEntryListeners() && !HasMethodExitListeners()) { |
| 956 | return false; |
| 957 | } |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 958 | return !deoptimization_enabled_ && !interpreter_stubs_installed_; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 959 | } |
| 960 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 961 | void Instrumentation::DeoptimizeEverything(const char* key) { |
| 962 | CHECK(deoptimization_enabled_); |
| 963 | ConfigureStubs(key, InstrumentationLevel::kInstrumentWithInterpreter); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 964 | } |
| 965 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 966 | void Instrumentation::UndeoptimizeEverything(const char* key) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 967 | CHECK(interpreter_stubs_installed_); |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 968 | CHECK(deoptimization_enabled_); |
| 969 | ConfigureStubs(key, InstrumentationLevel::kInstrumentNothing); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 970 | } |
| 971 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 972 | void Instrumentation::EnableMethodTracing(const char* key, bool needs_interpreter) { |
| 973 | InstrumentationLevel level; |
| 974 | if (needs_interpreter) { |
| 975 | level = InstrumentationLevel::kInstrumentWithInterpreter; |
| 976 | } else { |
| 977 | level = InstrumentationLevel::kInstrumentWithInstrumentationStubs; |
| 978 | } |
| 979 | ConfigureStubs(key, level); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 980 | } |
| 981 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 982 | void Instrumentation::DisableMethodTracing(const char* key) { |
| 983 | ConfigureStubs(key, InstrumentationLevel::kInstrumentNothing); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 984 | } |
| 985 | |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 986 | const void* Instrumentation::GetQuickCodeFor(ArtMethod* method, PointerSize pointer_size) const { |
Vladimir Marko | 97d7e1c | 2016-10-04 14:44:28 +0100 | [diff] [blame] | 987 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 988 | if (LIKELY(!instrumentation_stubs_installed_)) { |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 989 | const void* code = method->GetEntryPointFromQuickCompiledCodePtrSize(pointer_size); |
Vladimir Marko | 8a63057 | 2014-04-09 18:45:35 +0100 | [diff] [blame] | 990 | DCHECK(code != nullptr); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 991 | if (LIKELY(!class_linker->IsQuickResolutionStub(code) && |
| 992 | !class_linker->IsQuickToInterpreterBridge(code)) && |
| 993 | !class_linker->IsQuickResolutionStub(code) && |
| 994 | !class_linker->IsQuickToInterpreterBridge(code)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 995 | return code; |
| 996 | } |
| 997 | } |
Alex Light | fc49fec | 2018-01-16 22:28:36 +0000 | [diff] [blame] | 998 | return class_linker->GetQuickOatCodeFor(method); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 999 | } |
| 1000 | |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1001 | void Instrumentation::MethodEnterEventImpl(Thread* thread, |
| 1002 | ObjPtr<mirror::Object> this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1003 | ArtMethod* method, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1004 | uint32_t dex_pc) const { |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1005 | DCHECK(!method->IsRuntimeMethod()); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1006 | if (HasMethodEntryListeners()) { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1007 | Thread* self = Thread::Current(); |
| 1008 | StackHandleScope<1> hs(self); |
| 1009 | Handle<mirror::Object> thiz(hs.NewHandle(this_object)); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1010 | for (InstrumentationListener* listener : method_entry_listeners_) { |
| 1011 | if (listener != nullptr) { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1012 | listener->MethodEntered(thread, thiz, method, dex_pc); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1013 | } |
| 1014 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1015 | } |
| 1016 | } |
| 1017 | |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1018 | void Instrumentation::MethodExitEventImpl(Thread* thread, |
| 1019 | ObjPtr<mirror::Object> this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1020 | ArtMethod* method, |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1021 | uint32_t dex_pc, |
| 1022 | const JValue& return_value) const { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1023 | if (HasMethodExitListeners()) { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1024 | Thread* self = Thread::Current(); |
| 1025 | StackHandleScope<2> hs(self); |
| 1026 | Handle<mirror::Object> thiz(hs.NewHandle(this_object)); |
| 1027 | if (method->GetInterfaceMethodIfProxy(kRuntimePointerSize) |
| 1028 | ->GetReturnTypePrimitive() != Primitive::kPrimNot) { |
| 1029 | for (InstrumentationListener* listener : method_exit_listeners_) { |
| 1030 | if (listener != nullptr) { |
| 1031 | listener->MethodExited(thread, thiz, method, dex_pc, return_value); |
| 1032 | } |
| 1033 | } |
| 1034 | } else { |
| 1035 | Handle<mirror::Object> ret(hs.NewHandle(return_value.GetL())); |
| 1036 | for (InstrumentationListener* listener : method_exit_listeners_) { |
| 1037 | if (listener != nullptr) { |
| 1038 | listener->MethodExited(thread, thiz, method, dex_pc, ret); |
| 1039 | } |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1040 | } |
| 1041 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1042 | } |
| 1043 | } |
| 1044 | |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1045 | void Instrumentation::MethodUnwindEvent(Thread* thread, |
| 1046 | mirror::Object* this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1047 | ArtMethod* method, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1048 | uint32_t dex_pc) const { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 1049 | if (HasMethodUnwindListeners()) { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1050 | Thread* self = Thread::Current(); |
| 1051 | StackHandleScope<1> hs(self); |
| 1052 | Handle<mirror::Object> thiz(hs.NewHandle(this_object)); |
Mathieu Chartier | 02e2511 | 2013-08-14 16:14:24 -0700 | [diff] [blame] | 1053 | for (InstrumentationListener* listener : method_unwind_listeners_) { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1054 | if (listener != nullptr) { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1055 | listener->MethodUnwind(thread, thiz, method, dex_pc); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1056 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1057 | } |
| 1058 | } |
| 1059 | } |
| 1060 | |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1061 | void Instrumentation::DexPcMovedEventImpl(Thread* thread, |
| 1062 | ObjPtr<mirror::Object> this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1063 | ArtMethod* method, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1064 | uint32_t dex_pc) const { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1065 | Thread* self = Thread::Current(); |
| 1066 | StackHandleScope<1> hs(self); |
| 1067 | Handle<mirror::Object> thiz(hs.NewHandle(this_object)); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1068 | for (InstrumentationListener* listener : dex_pc_listeners_) { |
| 1069 | if (listener != nullptr) { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1070 | listener->DexPcMoved(thread, thiz, method, dex_pc); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1071 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1072 | } |
| 1073 | } |
| 1074 | |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 1075 | void Instrumentation::BranchImpl(Thread* thread, |
| 1076 | ArtMethod* method, |
| 1077 | uint32_t dex_pc, |
| 1078 | int32_t offset) const { |
| 1079 | for (InstrumentationListener* listener : branch_listeners_) { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1080 | if (listener != nullptr) { |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 1081 | listener->Branch(thread, method, dex_pc, offset); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1082 | } |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 1083 | } |
| 1084 | } |
| 1085 | |
Nicolas Geoffray | 5550ca8 | 2015-08-21 18:38:30 +0100 | [diff] [blame] | 1086 | void Instrumentation::InvokeVirtualOrInterfaceImpl(Thread* thread, |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1087 | ObjPtr<mirror::Object> this_object, |
Nicolas Geoffray | 5550ca8 | 2015-08-21 18:38:30 +0100 | [diff] [blame] | 1088 | ArtMethod* caller, |
| 1089 | uint32_t dex_pc, |
| 1090 | ArtMethod* callee) const { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1091 | Thread* self = Thread::Current(); |
| 1092 | StackHandleScope<1> hs(self); |
| 1093 | Handle<mirror::Object> thiz(hs.NewHandle(this_object)); |
Nicolas Geoffray | 5550ca8 | 2015-08-21 18:38:30 +0100 | [diff] [blame] | 1094 | for (InstrumentationListener* listener : invoke_virtual_or_interface_listeners_) { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1095 | if (listener != nullptr) { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1096 | listener->InvokeVirtualOrInterface(thread, thiz, caller, dex_pc, callee); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1097 | } |
Nicolas Geoffray | 5550ca8 | 2015-08-21 18:38:30 +0100 | [diff] [blame] | 1098 | } |
| 1099 | } |
| 1100 | |
Alex Light | e814f9d | 2017-07-31 16:14:39 -0700 | [diff] [blame] | 1101 | void Instrumentation::WatchedFramePopImpl(Thread* thread, const ShadowFrame& frame) const { |
| 1102 | for (InstrumentationListener* listener : watched_frame_pop_listeners_) { |
| 1103 | if (listener != nullptr) { |
| 1104 | listener->WatchedFramePop(thread, frame); |
| 1105 | } |
| 1106 | } |
| 1107 | } |
| 1108 | |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1109 | void Instrumentation::FieldReadEventImpl(Thread* thread, |
| 1110 | ObjPtr<mirror::Object> this_object, |
| 1111 | ArtMethod* method, |
| 1112 | uint32_t dex_pc, |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 1113 | ArtField* field) const { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1114 | Thread* self = Thread::Current(); |
| 1115 | StackHandleScope<1> hs(self); |
| 1116 | Handle<mirror::Object> thiz(hs.NewHandle(this_object)); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1117 | for (InstrumentationListener* listener : field_read_listeners_) { |
| 1118 | if (listener != nullptr) { |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1119 | listener->FieldRead(thread, thiz, method, dex_pc, field); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1120 | } |
Sebastien Hertz | 3f52eaf | 2014-04-04 17:50:18 +0200 | [diff] [blame] | 1121 | } |
| 1122 | } |
| 1123 | |
Alex Light | d766158 | 2017-05-01 13:48:16 -0700 | [diff] [blame] | 1124 | void Instrumentation::FieldWriteEventImpl(Thread* thread, |
| 1125 | ObjPtr<mirror::Object> this_object, |
| 1126 | ArtMethod* method, |
| 1127 | uint32_t dex_pc, |
| 1128 | ArtField* field, |
| 1129 | const JValue& field_value) const { |
| 1130 | Thread* self = Thread::Current(); |
| 1131 | StackHandleScope<2> hs(self); |
| 1132 | Handle<mirror::Object> thiz(hs.NewHandle(this_object)); |
| 1133 | if (field->IsPrimitiveType()) { |
| 1134 | for (InstrumentationListener* listener : field_write_listeners_) { |
| 1135 | if (listener != nullptr) { |
| 1136 | listener->FieldWritten(thread, thiz, method, dex_pc, field, field_value); |
| 1137 | } |
| 1138 | } |
| 1139 | } else { |
| 1140 | Handle<mirror::Object> val(hs.NewHandle(field_value.GetL())); |
| 1141 | for (InstrumentationListener* listener : field_write_listeners_) { |
| 1142 | if (listener != nullptr) { |
| 1143 | listener->FieldWritten(thread, thiz, method, dex_pc, field, val); |
| 1144 | } |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1145 | } |
Sebastien Hertz | 3f52eaf | 2014-04-04 17:50:18 +0200 | [diff] [blame] | 1146 | } |
| 1147 | } |
| 1148 | |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 1149 | void Instrumentation::ExceptionThrownEvent(Thread* thread, |
Sebastien Hertz | 947ff08 | 2013-09-17 14:10:13 +0200 | [diff] [blame] | 1150 | mirror::Throwable* exception_object) const { |
Hiroshi Yamauchi | 3481f7a | 2017-02-10 12:07:36 -0800 | [diff] [blame] | 1151 | Thread* self = Thread::Current(); |
| 1152 | StackHandleScope<1> hs(self); |
| 1153 | Handle<mirror::Throwable> h_exception(hs.NewHandle(exception_object)); |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 1154 | if (HasExceptionThrownListeners()) { |
Hiroshi Yamauchi | 3481f7a | 2017-02-10 12:07:36 -0800 | [diff] [blame] | 1155 | DCHECK_EQ(thread->GetException(), h_exception.Get()); |
Jeff Hao | c0bd4da | 2013-04-11 15:52:28 -0700 | [diff] [blame] | 1156 | thread->ClearException(); |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 1157 | for (InstrumentationListener* listener : exception_thrown_listeners_) { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1158 | if (listener != nullptr) { |
Alex Light | 6e1607e | 2017-08-23 10:06:18 -0700 | [diff] [blame] | 1159 | listener->ExceptionThrown(thread, h_exception); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1160 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1161 | } |
Alex Light | 9fb1ab1 | 2017-09-05 09:32:49 -0700 | [diff] [blame] | 1162 | // See b/65049545 for discussion about this behavior. |
| 1163 | thread->AssertNoPendingException(); |
Hiroshi Yamauchi | 3481f7a | 2017-02-10 12:07:36 -0800 | [diff] [blame] | 1164 | thread->SetException(h_exception.Get()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1165 | } |
| 1166 | } |
| 1167 | |
Alex Light | 9fb1ab1 | 2017-09-05 09:32:49 -0700 | [diff] [blame] | 1168 | void Instrumentation::ExceptionHandledEvent(Thread* thread, |
| 1169 | mirror::Throwable* exception_object) const { |
| 1170 | Thread* self = Thread::Current(); |
| 1171 | StackHandleScope<1> hs(self); |
| 1172 | Handle<mirror::Throwable> h_exception(hs.NewHandle(exception_object)); |
| 1173 | if (HasExceptionHandledListeners()) { |
| 1174 | // We should have cleared the exception so that callers can detect a new one. |
| 1175 | DCHECK(thread->GetException() == nullptr); |
| 1176 | for (InstrumentationListener* listener : exception_handled_listeners_) { |
| 1177 | if (listener != nullptr) { |
| 1178 | listener->ExceptionHandled(thread, h_exception); |
| 1179 | } |
| 1180 | } |
| 1181 | } |
| 1182 | } |
| 1183 | |
Sebastien Hertz | b2feaaf | 2015-10-12 13:40:10 +0000 | [diff] [blame] | 1184 | // Computes a frame ID by ignoring inlined frames. |
| 1185 | size_t Instrumentation::ComputeFrameId(Thread* self, |
| 1186 | size_t frame_depth, |
| 1187 | size_t inlined_frames_before_frame) { |
| 1188 | CHECK_GE(frame_depth, inlined_frames_before_frame); |
| 1189 | size_t no_inline_depth = frame_depth - inlined_frames_before_frame; |
| 1190 | return StackVisitor::ComputeNumFrames(self, kInstrumentationStackWalk) - no_inline_depth; |
| 1191 | } |
| 1192 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1193 | static void CheckStackDepth(Thread* self, const InstrumentationStackFrame& instrumentation_frame, |
| 1194 | int delta) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 1195 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 1196 | size_t frame_id = StackVisitor::ComputeNumFrames(self, kInstrumentationStackWalk) + delta; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1197 | if (frame_id != instrumentation_frame.frame_id_) { |
| 1198 | LOG(ERROR) << "Expected frame_id=" << frame_id << " but found " |
| 1199 | << instrumentation_frame.frame_id_; |
| 1200 | StackVisitor::DescribeStack(self); |
| 1201 | CHECK_EQ(frame_id, instrumentation_frame.frame_id_); |
| 1202 | } |
| 1203 | } |
| 1204 | |
| 1205 | void Instrumentation::PushInstrumentationStackFrame(Thread* self, mirror::Object* this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1206 | ArtMethod* method, |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 1207 | uintptr_t lr, bool interpreter_entry) { |
Alex Light | b7edcda | 2017-04-27 13:20:31 -0700 | [diff] [blame] | 1208 | DCHECK(!self->IsExceptionPending()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1209 | std::deque<instrumentation::InstrumentationStackFrame>* stack = self->GetInstrumentationStack(); |
| 1210 | if (kVerboseInstrumentation) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1211 | LOG(INFO) << "Entering " << ArtMethod::PrettyMethod(method) << " from PC " |
| 1212 | << reinterpret_cast<void*>(lr); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1213 | } |
Alex Light | b7edcda | 2017-04-27 13:20:31 -0700 | [diff] [blame] | 1214 | |
| 1215 | // We send the enter event before pushing the instrumentation frame to make cleanup easier. If the |
| 1216 | // event causes an exception we can simply send the unwind event and return. |
| 1217 | StackHandleScope<1> hs(self); |
| 1218 | Handle<mirror::Object> h_this(hs.NewHandle(this_object)); |
| 1219 | if (!interpreter_entry) { |
| 1220 | MethodEnterEvent(self, h_this.Get(), method, 0); |
| 1221 | if (self->IsExceptionPending()) { |
| 1222 | MethodUnwindEvent(self, h_this.Get(), method, 0); |
| 1223 | return; |
| 1224 | } |
| 1225 | } |
| 1226 | |
| 1227 | // We have a callee-save frame meaning this value is guaranteed to never be 0. |
| 1228 | DCHECK(!self->IsExceptionPending()); |
| 1229 | size_t frame_id = StackVisitor::ComputeNumFrames(self, kInstrumentationStackWalk); |
| 1230 | |
| 1231 | instrumentation::InstrumentationStackFrame instrumentation_frame(h_this.Get(), method, lr, |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 1232 | frame_id, interpreter_entry); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1233 | stack->push_front(instrumentation_frame); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1234 | } |
| 1235 | |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1236 | DeoptimizationMethodType Instrumentation::GetDeoptimizationMethodType(ArtMethod* method) { |
| 1237 | if (method->IsRuntimeMethod()) { |
| 1238 | // Certain methods have strict requirement on whether the dex instruction |
| 1239 | // should be re-executed upon deoptimization. |
| 1240 | if (method == Runtime::Current()->GetCalleeSaveMethod( |
| 1241 | CalleeSaveType::kSaveEverythingForClinit)) { |
| 1242 | return DeoptimizationMethodType::kKeepDexPc; |
| 1243 | } |
| 1244 | if (method == Runtime::Current()->GetCalleeSaveMethod( |
| 1245 | CalleeSaveType::kSaveEverythingForSuspendCheck)) { |
| 1246 | return DeoptimizationMethodType::kKeepDexPc; |
| 1247 | } |
| 1248 | } |
| 1249 | return DeoptimizationMethodType::kDefault; |
| 1250 | } |
| 1251 | |
| 1252 | // Try to get the shorty of a runtime method if it's an invocation stub. |
| 1253 | struct RuntimeMethodShortyVisitor : public StackVisitor { |
| 1254 | explicit RuntimeMethodShortyVisitor(Thread* thread) |
| 1255 | : StackVisitor(thread, nullptr, StackVisitor::StackWalkKind::kIncludeInlinedFrames), |
| 1256 | shorty('V') {} |
| 1257 | |
| 1258 | bool VisitFrame() REQUIRES_SHARED(Locks::mutator_lock_) { |
| 1259 | ArtMethod* m = GetMethod(); |
| 1260 | if (m != nullptr && !m->IsRuntimeMethod()) { |
| 1261 | // The first Java method. |
| 1262 | if (m->IsNative()) { |
| 1263 | // Use JNI method's shorty for the jni stub. |
| 1264 | shorty = m->GetShorty()[0]; |
| 1265 | return false; |
| 1266 | } |
| 1267 | if (m->IsProxyMethod()) { |
| 1268 | // Proxy method just invokes its proxied method via |
| 1269 | // art_quick_proxy_invoke_handler. |
| 1270 | shorty = m->GetInterfaceMethodIfProxy(kRuntimePointerSize)->GetShorty()[0]; |
| 1271 | return false; |
| 1272 | } |
Mathieu Chartier | 808c7a5 | 2017-12-15 11:19:33 -0800 | [diff] [blame] | 1273 | const Instruction& instr = m->DexInstructions().InstructionAt(GetDexPc()); |
| 1274 | if (instr.IsInvoke()) { |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1275 | const DexFile* dex_file = m->GetDexFile(); |
Mathieu Chartier | 808c7a5 | 2017-12-15 11:19:33 -0800 | [diff] [blame] | 1276 | if (interpreter::IsStringInit(dex_file, instr.VRegB())) { |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1277 | // Invoking string init constructor is turned into invoking |
| 1278 | // StringFactory.newStringFromChars() which returns a string. |
| 1279 | shorty = 'L'; |
| 1280 | return false; |
| 1281 | } |
| 1282 | // A regular invoke, use callee's shorty. |
Mathieu Chartier | 808c7a5 | 2017-12-15 11:19:33 -0800 | [diff] [blame] | 1283 | uint32_t method_idx = instr.VRegB(); |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1284 | shorty = dex_file->GetMethodShorty(method_idx)[0]; |
| 1285 | } |
| 1286 | // Stop stack walking since we've seen a Java frame. |
| 1287 | return false; |
| 1288 | } |
| 1289 | return true; |
| 1290 | } |
| 1291 | |
| 1292 | char shorty; |
| 1293 | }; |
| 1294 | |
Alex Light | b7edcda | 2017-04-27 13:20:31 -0700 | [diff] [blame] | 1295 | TwoWordReturn Instrumentation::PopInstrumentationStackFrame(Thread* self, |
| 1296 | uintptr_t* return_pc, |
| 1297 | uint64_t* gpr_result, |
| 1298 | uint64_t* fpr_result) { |
| 1299 | DCHECK(gpr_result != nullptr); |
| 1300 | DCHECK(fpr_result != nullptr); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1301 | // Do the pop. |
| 1302 | std::deque<instrumentation::InstrumentationStackFrame>* stack = self->GetInstrumentationStack(); |
| 1303 | CHECK_GT(stack->size(), 0U); |
| 1304 | InstrumentationStackFrame instrumentation_frame = stack->front(); |
| 1305 | stack->pop_front(); |
| 1306 | |
| 1307 | // Set return PC and check the sanity of the stack. |
| 1308 | *return_pc = instrumentation_frame.return_pc_; |
| 1309 | CheckStackDepth(self, instrumentation_frame, 0); |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 1310 | self->VerifyStack(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1311 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1312 | ArtMethod* method = instrumentation_frame.method_; |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 1313 | uint32_t length; |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 1314 | const PointerSize pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize(); |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1315 | char return_shorty; |
| 1316 | |
| 1317 | // Runtime method does not call into MethodExitEvent() so there should not be |
| 1318 | // suspension point below. |
| 1319 | ScopedAssertNoThreadSuspension ants(__FUNCTION__, method->IsRuntimeMethod()); |
| 1320 | if (method->IsRuntimeMethod()) { |
| 1321 | if (method != Runtime::Current()->GetCalleeSaveMethod( |
| 1322 | CalleeSaveType::kSaveEverythingForClinit)) { |
| 1323 | // If the caller is at an invocation point and the runtime method is not |
| 1324 | // for clinit, we need to pass return results to the caller. |
| 1325 | // We need the correct shorty to decide whether we need to pass the return |
| 1326 | // result for deoptimization below. |
| 1327 | RuntimeMethodShortyVisitor visitor(self); |
| 1328 | visitor.WalkStack(); |
| 1329 | return_shorty = visitor.shorty; |
| 1330 | } else { |
| 1331 | // Some runtime methods such as allocations, unresolved field getters, etc. |
| 1332 | // have return value. We don't need to set return_value since MethodExitEvent() |
| 1333 | // below isn't called for runtime methods. Deoptimization doesn't need the |
| 1334 | // value either since the dex instruction will be re-executed by the |
| 1335 | // interpreter, except these two cases: |
| 1336 | // (1) For an invoke, which is handled above to get the correct shorty. |
| 1337 | // (2) For MONITOR_ENTER/EXIT, which cannot be re-executed since it's not |
| 1338 | // idempotent. However there is no return value for it anyway. |
| 1339 | return_shorty = 'V'; |
| 1340 | } |
| 1341 | } else { |
| 1342 | return_shorty = method->GetInterfaceMethodIfProxy(pointer_size)->GetShorty(&length)[0]; |
| 1343 | } |
| 1344 | |
Alex Light | b7edcda | 2017-04-27 13:20:31 -0700 | [diff] [blame] | 1345 | bool is_ref = return_shorty == '[' || return_shorty == 'L'; |
| 1346 | StackHandleScope<1> hs(self); |
| 1347 | MutableHandle<mirror::Object> res(hs.NewHandle<mirror::Object>(nullptr)); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1348 | JValue return_value; |
| 1349 | if (return_shorty == 'V') { |
| 1350 | return_value.SetJ(0); |
| 1351 | } else if (return_shorty == 'F' || return_shorty == 'D') { |
Alex Light | b7edcda | 2017-04-27 13:20:31 -0700 | [diff] [blame] | 1352 | return_value.SetJ(*fpr_result); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1353 | } else { |
Alex Light | b7edcda | 2017-04-27 13:20:31 -0700 | [diff] [blame] | 1354 | return_value.SetJ(*gpr_result); |
| 1355 | } |
| 1356 | if (is_ref) { |
| 1357 | // Take a handle to the return value so we won't lose it if we suspend. |
| 1358 | res.Assign(return_value.GetL()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1359 | } |
| 1360 | // TODO: improve the dex pc information here, requires knowledge of current PC as opposed to |
| 1361 | // return_pc. |
Andreas Gampe | e2abbc6 | 2017-09-15 11:59:26 -0700 | [diff] [blame] | 1362 | uint32_t dex_pc = dex::kDexNoIndex; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1363 | mirror::Object* this_object = instrumentation_frame.this_object_; |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1364 | if (!method->IsRuntimeMethod() && !instrumentation_frame.interpreter_entry_) { |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 1365 | MethodExitEvent(self, this_object, instrumentation_frame.method_, dex_pc, return_value); |
| 1366 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 1367 | |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 1368 | // Deoptimize if the caller needs to continue execution in the interpreter. Do nothing if we get |
| 1369 | // back to an upcall. |
| 1370 | NthCallerVisitor visitor(self, 1, true); |
| 1371 | visitor.WalkStack(true); |
Sebastien Hertz | 270a0e1 | 2015-01-16 19:49:09 +0100 | [diff] [blame] | 1372 | bool deoptimize = (visitor.caller != nullptr) && |
Daniel Mihalyi | eb07669 | 2014-08-22 17:33:31 +0200 | [diff] [blame] | 1373 | (interpreter_stubs_installed_ || IsDeoptimized(visitor.caller) || |
| 1374 | Dbg::IsForcedInterpreterNeededForUpcall(self, visitor.caller)); |
Alex Light | b7edcda | 2017-04-27 13:20:31 -0700 | [diff] [blame] | 1375 | if (is_ref) { |
| 1376 | // Restore the return value if it's a reference since it might have moved. |
| 1377 | *reinterpret_cast<mirror::Object**>(gpr_result) = res.Get(); |
| 1378 | } |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 1379 | if (deoptimize && Runtime::Current()->IsAsyncDeoptimizeable(*return_pc)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1380 | if (kVerboseInstrumentation) { |
Andreas Gampe | 46ee31b | 2016-12-14 10:11:49 -0800 | [diff] [blame] | 1381 | LOG(INFO) << "Deoptimizing " |
| 1382 | << visitor.caller->PrettyMethod() |
| 1383 | << " by returning from " |
| 1384 | << method->PrettyMethod() |
| 1385 | << " with result " |
| 1386 | << std::hex << return_value.GetJ() << std::dec |
| 1387 | << " in " |
| 1388 | << *self; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1389 | } |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1390 | DeoptimizationMethodType deopt_method_type = GetDeoptimizationMethodType(method); |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 1391 | self->PushDeoptimizationContext(return_value, |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1392 | return_shorty == 'L' || return_shorty == '[', |
| 1393 | nullptr /* no pending exception */, |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 1394 | false /* from_code */, |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1395 | deopt_method_type); |
Andreas Gampe | d58342c | 2014-06-05 14:18:08 -0700 | [diff] [blame] | 1396 | return GetTwoWordSuccessValue(*return_pc, |
| 1397 | reinterpret_cast<uintptr_t>(GetQuickDeoptimizationEntryPoint())); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1398 | } else { |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 1399 | if (deoptimize && !Runtime::Current()->IsAsyncDeoptimizeable(*return_pc)) { |
Alex Light | d8eb673 | 2018-01-29 15:16:02 -0800 | [diff] [blame] | 1400 | VLOG(deopt) << "Got a deoptimization request on un-deoptimizable " << method->PrettyMethod() |
| 1401 | << " at PC " << reinterpret_cast<void*>(*return_pc); |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 1402 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1403 | if (kVerboseInstrumentation) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1404 | LOG(INFO) << "Returning from " << method->PrettyMethod() |
Brian Carlstrom | 2d88862 | 2013-07-18 17:02:00 -0700 | [diff] [blame] | 1405 | << " to PC " << reinterpret_cast<void*>(*return_pc); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1406 | } |
Andreas Gampe | d58342c | 2014-06-05 14:18:08 -0700 | [diff] [blame] | 1407 | return GetTwoWordSuccessValue(0, *return_pc); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1408 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 1409 | } |
| 1410 | |
Mingyao Yang | f711f2c | 2016-05-23 12:29:39 -0700 | [diff] [blame] | 1411 | uintptr_t Instrumentation::PopMethodForUnwind(Thread* self, bool is_deoptimization) const { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1412 | // Do the pop. |
| 1413 | std::deque<instrumentation::InstrumentationStackFrame>* stack = self->GetInstrumentationStack(); |
| 1414 | CHECK_GT(stack->size(), 0U); |
Alex Light | b7edcda | 2017-04-27 13:20:31 -0700 | [diff] [blame] | 1415 | size_t idx = stack->size(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1416 | InstrumentationStackFrame instrumentation_frame = stack->front(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1417 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1418 | ArtMethod* method = instrumentation_frame.method_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1419 | if (is_deoptimization) { |
| 1420 | if (kVerboseInstrumentation) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1421 | LOG(INFO) << "Popping for deoptimization " << ArtMethod::PrettyMethod(method); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1422 | } |
| 1423 | } else { |
| 1424 | if (kVerboseInstrumentation) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1425 | LOG(INFO) << "Popping for unwind " << ArtMethod::PrettyMethod(method); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1426 | } |
| 1427 | |
| 1428 | // Notify listeners of method unwind. |
| 1429 | // TODO: improve the dex pc information here, requires knowledge of current PC as opposed to |
| 1430 | // return_pc. |
Andreas Gampe | e2abbc6 | 2017-09-15 11:59:26 -0700 | [diff] [blame] | 1431 | uint32_t dex_pc = dex::kDexNoIndex; |
Mingyao Yang | 2ee1790 | 2017-08-30 11:37:08 -0700 | [diff] [blame] | 1432 | if (!method->IsRuntimeMethod()) { |
| 1433 | MethodUnwindEvent(self, instrumentation_frame.this_object_, method, dex_pc); |
| 1434 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1435 | } |
Alex Light | b7edcda | 2017-04-27 13:20:31 -0700 | [diff] [blame] | 1436 | // TODO: bring back CheckStackDepth(self, instrumentation_frame, 2); |
| 1437 | CHECK_EQ(stack->size(), idx); |
| 1438 | DCHECK(instrumentation_frame.method_ == stack->front().method_); |
| 1439 | stack->pop_front(); |
Mingyao Yang | f711f2c | 2016-05-23 12:29:39 -0700 | [diff] [blame] | 1440 | return instrumentation_frame.return_pc_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1441 | } |
| 1442 | |
| 1443 | std::string InstrumentationStackFrame::Dump() const { |
| 1444 | std::ostringstream os; |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1445 | os << "Frame " << frame_id_ << " " << ArtMethod::PrettyMethod(method_) << ":" |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1446 | << reinterpret_cast<void*>(return_pc_) << " this=" << reinterpret_cast<void*>(this_object_); |
| 1447 | return os.str(); |
| 1448 | } |
| 1449 | |
| 1450 | } // namespace instrumentation |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 1451 | } // namespace art |