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" |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 22 | #include "art_method-inl.h" |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 23 | #include "atomic.h" |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 24 | #include "class_linker.h" |
| 25 | #include "debugger.h" |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 26 | #include "dex_file-inl.h" |
Ian Rogers | c7dd295 | 2014-10-21 23:31:19 -0700 | [diff] [blame] | 27 | #include "entrypoints/quick/quick_entrypoints.h" |
Mathieu Chartier | d889178 | 2014-03-02 13:28:37 -0800 | [diff] [blame] | 28 | #include "entrypoints/quick/quick_alloc_entrypoints.h" |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 29 | #include "entrypoints/runtime_asm_entrypoints.h" |
Hiroshi Yamauchi | 94f7b49 | 2014-07-22 18:08:23 -0700 | [diff] [blame] | 30 | #include "gc_root-inl.h" |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 31 | #include "interpreter/interpreter.h" |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 32 | #include "jit/jit.h" |
| 33 | #include "jit/jit_code_cache.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 34 | #include "mirror/class-inl.h" |
| 35 | #include "mirror/dex_cache.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 36 | #include "mirror/object_array-inl.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 37 | #include "mirror/object-inl.h" |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 38 | #include "nth_caller_visitor.h" |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 39 | #include "oat_quick_method_header.h" |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 40 | #include "thread.h" |
| 41 | #include "thread_list.h" |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 42 | |
| 43 | namespace art { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 44 | namespace instrumentation { |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 45 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 46 | constexpr bool kVerboseInstrumentation = false; |
Sebastien Hertz | 5bfd5c9 | 2013-11-15 11:36:07 +0100 | [diff] [blame] | 47 | |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 48 | // Instrumentation works on non-inlined frames by updating returned PCs |
| 49 | // of compiled frames. |
| 50 | static constexpr StackVisitor::StackWalkKind kInstrumentationStackWalk = |
| 51 | StackVisitor::StackWalkKind::kSkipInlinedFrames; |
| 52 | |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 53 | class InstallStubsClassVisitor : public ClassVisitor { |
| 54 | public: |
| 55 | explicit InstallStubsClassVisitor(Instrumentation* instrumentation) |
| 56 | : instrumentation_(instrumentation) {} |
| 57 | |
Mathieu Chartier | 28357fa | 2016-10-18 16:27:40 -0700 | [diff] [blame] | 58 | bool operator()(ObjPtr<mirror::Class> klass) OVERRIDE REQUIRES(Locks::mutator_lock_) { |
| 59 | instrumentation_->InstallStubsForClass(klass.Ptr()); |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 60 | return true; // we visit all classes. |
| 61 | } |
| 62 | |
| 63 | private: |
| 64 | Instrumentation* const instrumentation_; |
| 65 | }; |
| 66 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 67 | |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 68 | Instrumentation::Instrumentation() |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 69 | : instrumentation_stubs_installed_(false), |
| 70 | entry_exit_stubs_installed_(false), |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 71 | interpreter_stubs_installed_(false), |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 72 | interpret_only_(false), |
| 73 | forced_interpret_only_(false), |
| 74 | have_method_entry_listeners_(false), |
| 75 | have_method_exit_listeners_(false), |
| 76 | have_method_unwind_listeners_(false), |
| 77 | have_dex_pc_listeners_(false), |
| 78 | have_field_read_listeners_(false), |
| 79 | have_field_write_listeners_(false), |
| 80 | have_exception_caught_listeners_(false), |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 81 | have_branch_listeners_(false), |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 82 | have_invoke_virtual_or_interface_listeners_(false), |
Mathieu Chartier | b8aa1e4 | 2016-04-05 14:36:57 -0700 | [diff] [blame] | 83 | deoptimized_methods_lock_("deoptimized methods lock", kDeoptimizedMethodsLock), |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 84 | deoptimization_enabled_(false), |
| 85 | interpreter_handler_table_(kMainHandlerTable), |
Mathieu Chartier | 50e9331 | 2016-03-16 11:25:29 -0700 | [diff] [blame] | 86 | quick_alloc_entry_points_instrumentation_counter_(0), |
| 87 | alloc_entrypoints_instrumented_(false) { |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 88 | } |
| 89 | |
Sebastien Hertz | a10aa37 | 2015-01-21 17:30:58 +0100 | [diff] [blame] | 90 | void Instrumentation::InstallStubsForClass(mirror::Class* klass) { |
Vladimir Marko | 72ab684 | 2017-01-20 19:32:50 +0000 | [diff] [blame] | 91 | if (!klass->IsResolved()) { |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 92 | // We need the class to be resolved to install/uninstall stubs. Otherwise its methods |
| 93 | // could not be initialized or linked with regards to class inheritance. |
Vladimir Marko | 72ab684 | 2017-01-20 19:32:50 +0000 | [diff] [blame] | 94 | } else if (klass->IsErroneousResolved()) { |
| 95 | // We can't execute code in a erroneous class: do nothing. |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 96 | } else { |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 97 | for (ArtMethod& method : klass->GetMethods(kRuntimePointerSize)) { |
Alex Light | 51a64d5 | 2015-12-17 13:55:59 -0800 | [diff] [blame] | 98 | InstallStubsForMethod(&method); |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 99 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 100 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 101 | } |
| 102 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 103 | static void UpdateEntrypoints(ArtMethod* method, const void* quick_code) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 104 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 105 | method->SetEntryPointFromQuickCompiledCode(quick_code); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 106 | } |
| 107 | |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 108 | bool Instrumentation::NeedDebugVersionFor(ArtMethod* method) const REQUIRES_SHARED(Locks::mutator_lock_) { |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 109 | return Dbg::IsDebuggerActive() && |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 110 | Runtime::Current()->IsJavaDebuggable() && |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 111 | !method->IsNative() && |
| 112 | !method->IsProxyMethod(); |
| 113 | } |
| 114 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 115 | void Instrumentation::InstallStubsForMethod(ArtMethod* method) { |
Alex Light | 9139e00 | 2015-10-09 15:59:48 -0700 | [diff] [blame] | 116 | if (!method->IsInvokable() || method->IsProxyMethod()) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 117 | // Do not change stubs for these methods. |
| 118 | return; |
| 119 | } |
Jeff Hao | 5680277 | 2014-08-19 10:17:36 -0700 | [diff] [blame] | 120 | // Don't stub Proxy.<init>. Note that the Proxy class itself is not a proxy class. |
| 121 | if (method->IsConstructor() && |
| 122 | method->GetDeclaringClass()->DescriptorEquals("Ljava/lang/reflect/Proxy;")) { |
Jeff Hao | db8a664 | 2014-08-14 17:18:52 -0700 | [diff] [blame] | 123 | return; |
| 124 | } |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 125 | const void* new_quick_code; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 126 | bool uninstall = !entry_exit_stubs_installed_ && !interpreter_stubs_installed_; |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 127 | Runtime* const runtime = Runtime::Current(); |
| 128 | ClassLinker* const class_linker = runtime->GetClassLinker(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 129 | bool is_class_initialized = method->GetDeclaringClass()->IsInitialized(); |
| 130 | if (uninstall) { |
| 131 | if ((forced_interpret_only_ || IsDeoptimized(method)) && !method->IsNative()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 132 | new_quick_code = GetQuickToInterpreterBridge(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 133 | } else if (is_class_initialized || !method->IsStatic() || method->IsConstructor()) { |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 134 | if (NeedDebugVersionFor(method)) { |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 135 | new_quick_code = GetQuickToInterpreterBridge(); |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 136 | } else { |
| 137 | new_quick_code = class_linker->GetQuickOatCodeFor(method); |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 138 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 139 | } else { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 140 | new_quick_code = GetQuickResolutionStub(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 141 | } |
| 142 | } else { // !uninstall |
Sebastien Hertz | bae182c | 2013-12-17 10:42:03 +0100 | [diff] [blame] | 143 | if ((interpreter_stubs_installed_ || forced_interpret_only_ || IsDeoptimized(method)) && |
| 144 | !method->IsNative()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 145 | new_quick_code = GetQuickToInterpreterBridge(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 146 | } else { |
| 147 | // Do not overwrite resolution trampoline. When the trampoline initializes the method's |
| 148 | // class, all its static methods code will be set to the instrumentation entry point. |
| 149 | // For more details, see ClassLinker::FixupStaticTrampolines. |
| 150 | if (is_class_initialized || !method->IsStatic() || method->IsConstructor()) { |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 151 | if (NeedDebugVersionFor(method)) { |
Mingyao Yang | 6ea1a0e | 2016-01-29 12:12:49 -0800 | [diff] [blame] | 152 | // Oat code should not be used. Don't install instrumentation stub and |
| 153 | // use interpreter for instrumentation. |
| 154 | new_quick_code = GetQuickToInterpreterBridge(); |
| 155 | } else if (entry_exit_stubs_installed_) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 156 | new_quick_code = GetQuickInstrumentationEntryPoint(); |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 157 | } else { |
| 158 | new_quick_code = class_linker->GetQuickOatCodeFor(method); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 159 | } |
| 160 | } else { |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 161 | new_quick_code = GetQuickResolutionStub(); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 162 | } |
| 163 | } |
| 164 | } |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 165 | UpdateEntrypoints(method, new_quick_code); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 166 | } |
| 167 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 168 | // Places the instrumentation exit pc as the return PC for every quick frame. This also allows |
| 169 | // deoptimization of quick frames to interpreter frames. |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 170 | // Since we may already have done this previously, we need to push new instrumentation frame before |
| 171 | // existing instrumentation frames. |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 172 | static void InstrumentationInstallStack(Thread* thread, void* arg) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 173 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 174 | struct InstallStackVisitor FINAL : public StackVisitor { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 175 | InstallStackVisitor(Thread* thread_in, Context* context, uintptr_t instrumentation_exit_pc) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 176 | : StackVisitor(thread_in, context, kInstrumentationStackWalk), |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 177 | instrumentation_stack_(thread_in->GetInstrumentationStack()), |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 178 | instrumentation_exit_pc_(instrumentation_exit_pc), |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 179 | reached_existing_instrumentation_frames_(false), instrumentation_stack_depth_(0), |
| 180 | last_return_pc_(0) { |
| 181 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 182 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 183 | bool VisitFrame() OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 184 | ArtMethod* m = GetMethod(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 185 | if (m == nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 186 | if (kVerboseInstrumentation) { |
| 187 | LOG(INFO) << " Skipping upcall. Frame " << GetFrameId(); |
| 188 | } |
| 189 | last_return_pc_ = 0; |
Brian Carlstrom | 7934ac2 | 2013-07-26 10:54:15 -0700 | [diff] [blame] | 190 | return true; // Ignore upcalls. |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 191 | } |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 192 | if (GetCurrentQuickFrame() == nullptr) { |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 193 | bool interpreter_frame = true; |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 194 | InstrumentationStackFrame instrumentation_frame(GetThisObject(), m, 0, GetFrameId(), |
| 195 | interpreter_frame); |
Jeff Hao | a15a81b | 2014-05-27 18:25:47 -0700 | [diff] [blame] | 196 | if (kVerboseInstrumentation) { |
| 197 | LOG(INFO) << "Pushing shadow frame " << instrumentation_frame.Dump(); |
| 198 | } |
| 199 | shadow_stack_.push_back(instrumentation_frame); |
| 200 | return true; // Continue. |
| 201 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 202 | uintptr_t return_pc = GetReturnPc(); |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 203 | if (m->IsRuntimeMethod()) { |
| 204 | if (return_pc == instrumentation_exit_pc_) { |
| 205 | if (kVerboseInstrumentation) { |
| 206 | LOG(INFO) << " Handling quick to interpreter transition. Frame " << GetFrameId(); |
| 207 | } |
| 208 | CHECK_LT(instrumentation_stack_depth_, instrumentation_stack_->size()); |
Daniel Mihalyi | ca1d06c | 2014-08-18 18:45:31 +0200 | [diff] [blame] | 209 | const InstrumentationStackFrame& frame = |
| 210 | instrumentation_stack_->at(instrumentation_stack_depth_); |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 211 | CHECK(frame.interpreter_entry_); |
| 212 | // This is an interpreter frame so method enter event must have been reported. However we |
| 213 | // need to push a DEX pc into the dex_pcs_ list to match size of instrumentation stack. |
| 214 | // Since we won't report method entry here, we can safely push any DEX pc. |
| 215 | dex_pcs_.push_back(0); |
| 216 | last_return_pc_ = frame.return_pc_; |
| 217 | ++instrumentation_stack_depth_; |
| 218 | return true; |
| 219 | } else { |
| 220 | if (kVerboseInstrumentation) { |
| 221 | LOG(INFO) << " Skipping runtime method. Frame " << GetFrameId(); |
| 222 | } |
| 223 | last_return_pc_ = GetReturnPc(); |
| 224 | return true; // Ignore unresolved methods since they will be instrumented after resolution. |
| 225 | } |
| 226 | } |
| 227 | if (kVerboseInstrumentation) { |
| 228 | LOG(INFO) << " Installing exit stub in " << DescribeLocation(); |
| 229 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 230 | if (return_pc == instrumentation_exit_pc_) { |
| 231 | // We've reached a frame which has already been installed with instrumentation exit stub. |
| 232 | // We should have already installed instrumentation on previous frames. |
| 233 | reached_existing_instrumentation_frames_ = true; |
| 234 | |
| 235 | CHECK_LT(instrumentation_stack_depth_, instrumentation_stack_->size()); |
Daniel Mihalyi | ca1d06c | 2014-08-18 18:45:31 +0200 | [diff] [blame] | 236 | const InstrumentationStackFrame& frame = |
| 237 | instrumentation_stack_->at(instrumentation_stack_depth_); |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 238 | CHECK_EQ(m, frame.method_) << "Expected " << ArtMethod::PrettyMethod(m) |
| 239 | << ", Found " << ArtMethod::PrettyMethod(frame.method_); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 240 | return_pc = frame.return_pc_; |
| 241 | if (kVerboseInstrumentation) { |
| 242 | LOG(INFO) << "Ignoring already instrumented " << frame.Dump(); |
| 243 | } |
| 244 | } else { |
| 245 | CHECK_NE(return_pc, 0U); |
| 246 | CHECK(!reached_existing_instrumentation_frames_); |
| 247 | InstrumentationStackFrame instrumentation_frame(GetThisObject(), m, return_pc, GetFrameId(), |
| 248 | false); |
| 249 | if (kVerboseInstrumentation) { |
| 250 | LOG(INFO) << "Pushing frame " << instrumentation_frame.Dump(); |
| 251 | } |
| 252 | |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 253 | // Insert frame at the right position so we do not corrupt the instrumentation stack. |
| 254 | // Instrumentation stack frames are in descending frame id order. |
| 255 | auto it = instrumentation_stack_->begin(); |
| 256 | for (auto end = instrumentation_stack_->end(); it != end; ++it) { |
| 257 | const InstrumentationStackFrame& current = *it; |
| 258 | if (instrumentation_frame.frame_id_ >= current.frame_id_) { |
| 259 | break; |
| 260 | } |
| 261 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 262 | instrumentation_stack_->insert(it, instrumentation_frame); |
| 263 | SetReturnPc(instrumentation_exit_pc_); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 264 | } |
Nicolas Geoffray | 524e7ea | 2015-10-16 17:13:34 +0100 | [diff] [blame] | 265 | dex_pcs_.push_back((GetCurrentOatQuickMethodHeader() == nullptr) |
| 266 | ? DexFile::kDexNoIndex |
| 267 | : GetCurrentOatQuickMethodHeader()->ToDexPc(m, last_return_pc_)); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 268 | last_return_pc_ = return_pc; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 269 | ++instrumentation_stack_depth_; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 270 | return true; // Continue. |
| 271 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 272 | std::deque<InstrumentationStackFrame>* const instrumentation_stack_; |
Jeff Hao | a15a81b | 2014-05-27 18:25:47 -0700 | [diff] [blame] | 273 | std::vector<InstrumentationStackFrame> shadow_stack_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 274 | std::vector<uint32_t> dex_pcs_; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 275 | const uintptr_t instrumentation_exit_pc_; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 276 | bool reached_existing_instrumentation_frames_; |
| 277 | size_t instrumentation_stack_depth_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 278 | uintptr_t last_return_pc_; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 279 | }; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 280 | if (kVerboseInstrumentation) { |
| 281 | std::string thread_name; |
| 282 | thread->GetThreadName(thread_name); |
| 283 | LOG(INFO) << "Installing exit stubs in " << thread_name; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 284 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 285 | |
| 286 | Instrumentation* instrumentation = reinterpret_cast<Instrumentation*>(arg); |
Ian Rogers | 700a402 | 2014-05-19 16:49:03 -0700 | [diff] [blame] | 287 | std::unique_ptr<Context> context(Context::Create()); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 288 | uintptr_t instrumentation_exit_pc = reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc()); |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 289 | InstallStackVisitor visitor(thread, context.get(), instrumentation_exit_pc); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 290 | visitor.WalkStack(true); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 291 | CHECK_EQ(visitor.dex_pcs_.size(), thread->GetInstrumentationStack()->size()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 292 | |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 293 | if (instrumentation->ShouldNotifyMethodEnterExitEvents()) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 294 | // Create method enter events for all methods currently on the thread's stack. We only do this |
| 295 | // if no debugger is attached to prevent from posting events twice. |
Jeff Hao | a15a81b | 2014-05-27 18:25:47 -0700 | [diff] [blame] | 296 | auto ssi = visitor.shadow_stack_.rbegin(); |
| 297 | for (auto isi = thread->GetInstrumentationStack()->rbegin(), |
| 298 | end = thread->GetInstrumentationStack()->rend(); isi != end; ++isi) { |
| 299 | while (ssi != visitor.shadow_stack_.rend() && (*ssi).frame_id_ < (*isi).frame_id_) { |
| 300 | instrumentation->MethodEnterEvent(thread, (*ssi).this_object_, (*ssi).method_, 0); |
| 301 | ++ssi; |
| 302 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 303 | uint32_t dex_pc = visitor.dex_pcs_.back(); |
| 304 | visitor.dex_pcs_.pop_back(); |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 305 | if (!isi->interpreter_entry_) { |
| 306 | instrumentation->MethodEnterEvent(thread, (*isi).this_object_, (*isi).method_, dex_pc); |
| 307 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 308 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 309 | } |
| 310 | thread->VerifyStack(); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 311 | } |
| 312 | |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 313 | void Instrumentation::InstrumentThreadStack(Thread* thread) { |
| 314 | instrumentation_stubs_installed_ = true; |
| 315 | InstrumentationInstallStack(thread, this); |
| 316 | } |
| 317 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 318 | // Removes the instrumentation exit pc as the return PC for every quick frame. |
| 319 | static void InstrumentationRestoreStack(Thread* thread, void* arg) |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 320 | REQUIRES(Locks::mutator_lock_) { |
| 321 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
| 322 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 323 | struct RestoreStackVisitor FINAL : public StackVisitor { |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 324 | RestoreStackVisitor(Thread* thread_in, uintptr_t instrumentation_exit_pc, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 325 | Instrumentation* instrumentation) |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 326 | : StackVisitor(thread_in, nullptr, kInstrumentationStackWalk), |
| 327 | thread_(thread_in), |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 328 | instrumentation_exit_pc_(instrumentation_exit_pc), |
| 329 | instrumentation_(instrumentation), |
Andreas Gampe | 277ccbd | 2014-11-03 21:36:10 -0800 | [diff] [blame] | 330 | instrumentation_stack_(thread_in->GetInstrumentationStack()), |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 331 | frames_removed_(0) {} |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 332 | |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 333 | bool VisitFrame() OVERRIDE REQUIRES_SHARED(Locks::mutator_lock_) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 334 | if (instrumentation_stack_->size() == 0) { |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 335 | return false; // Stop. |
| 336 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 337 | ArtMethod* m = GetMethod(); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 338 | if (GetCurrentQuickFrame() == nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 339 | if (kVerboseInstrumentation) { |
Daniel Mihalyi | ca1d06c | 2014-08-18 18:45:31 +0200 | [diff] [blame] | 340 | LOG(INFO) << " Ignoring a shadow frame. Frame " << GetFrameId() |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 341 | << " Method=" << ArtMethod::PrettyMethod(m); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 342 | } |
| 343 | return true; // Ignore shadow frames. |
| 344 | } |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 345 | if (m == nullptr) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 346 | if (kVerboseInstrumentation) { |
| 347 | LOG(INFO) << " Skipping upcall. Frame " << GetFrameId(); |
| 348 | } |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 349 | return true; // Ignore upcalls. |
| 350 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 351 | bool removed_stub = false; |
| 352 | // TODO: make this search more efficient? |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 353 | const size_t frameId = GetFrameId(); |
| 354 | for (const InstrumentationStackFrame& instrumentation_frame : *instrumentation_stack_) { |
| 355 | if (instrumentation_frame.frame_id_ == frameId) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 356 | if (kVerboseInstrumentation) { |
| 357 | LOG(INFO) << " Removing exit stub in " << DescribeLocation(); |
| 358 | } |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 359 | if (instrumentation_frame.interpreter_entry_) { |
Vladimir Marko | fd36f1f | 2016-08-03 18:49:58 +0100 | [diff] [blame] | 360 | CHECK(m == Runtime::Current()->GetCalleeSaveMethod(Runtime::kSaveRefsAndArgs)); |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 361 | } else { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 362 | CHECK(m == instrumentation_frame.method_) << ArtMethod::PrettyMethod(m); |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 363 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 364 | SetReturnPc(instrumentation_frame.return_pc_); |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 365 | if (instrumentation_->ShouldNotifyMethodEnterExitEvents()) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 366 | // Create the method exit events. As the methods didn't really exit the result is 0. |
| 367 | // We only do this if no debugger is attached to prevent from posting events twice. |
| 368 | instrumentation_->MethodExitEvent(thread_, instrumentation_frame.this_object_, m, |
| 369 | GetDexPc(), JValue()); |
| 370 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 371 | frames_removed_++; |
| 372 | removed_stub = true; |
| 373 | break; |
| 374 | } |
| 375 | } |
| 376 | if (!removed_stub) { |
| 377 | if (kVerboseInstrumentation) { |
| 378 | LOG(INFO) << " No exit stub in " << DescribeLocation(); |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 379 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 380 | } |
| 381 | return true; // Continue. |
| 382 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 383 | Thread* const thread_; |
Ian Rogers | 306057f | 2012-11-26 12:45:53 -0800 | [diff] [blame] | 384 | const uintptr_t instrumentation_exit_pc_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 385 | Instrumentation* const instrumentation_; |
| 386 | std::deque<instrumentation::InstrumentationStackFrame>* const instrumentation_stack_; |
| 387 | size_t frames_removed_; |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 388 | }; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 389 | if (kVerboseInstrumentation) { |
| 390 | std::string thread_name; |
| 391 | thread->GetThreadName(thread_name); |
| 392 | LOG(INFO) << "Removing exit stubs in " << thread_name; |
| 393 | } |
| 394 | std::deque<instrumentation::InstrumentationStackFrame>* stack = thread->GetInstrumentationStack(); |
| 395 | if (stack->size() > 0) { |
| 396 | Instrumentation* instrumentation = reinterpret_cast<Instrumentation*>(arg); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 397 | uintptr_t instrumentation_exit_pc = |
| 398 | reinterpret_cast<uintptr_t>(GetQuickInstrumentationExitPc()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 399 | RestoreStackVisitor visitor(thread, instrumentation_exit_pc, instrumentation); |
| 400 | visitor.WalkStack(true); |
| 401 | CHECK_EQ(visitor.frames_removed_, stack->size()); |
| 402 | while (stack->size() > 0) { |
| 403 | stack->pop_front(); |
| 404 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 405 | } |
| 406 | } |
| 407 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 408 | static bool HasEvent(Instrumentation::InstrumentationEvent expected, uint32_t events) { |
| 409 | return (events & expected) != 0; |
| 410 | } |
| 411 | |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 412 | static void PotentiallyAddListenerTo(Instrumentation::InstrumentationEvent event, |
| 413 | uint32_t events, |
| 414 | std::list<InstrumentationListener*>& list, |
| 415 | InstrumentationListener* listener, |
| 416 | bool* has_listener) |
| 417 | REQUIRES(Locks::mutator_lock_, !Locks::thread_list_lock_, !Locks::classlinker_classes_lock_) { |
| 418 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
| 419 | if (!HasEvent(event, events)) { |
| 420 | return; |
| 421 | } |
| 422 | // If there is a free slot in the list, we insert the listener in that slot. |
| 423 | // Otherwise we add it to the end of the list. |
| 424 | auto it = std::find(list.begin(), list.end(), nullptr); |
| 425 | if (it != list.end()) { |
| 426 | *it = listener; |
| 427 | } else { |
| 428 | list.push_back(listener); |
| 429 | } |
| 430 | *has_listener = true; |
| 431 | } |
| 432 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 433 | void Instrumentation::AddListener(InstrumentationListener* listener, uint32_t events) { |
| 434 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 435 | PotentiallyAddListenerTo(kMethodEntered, |
| 436 | events, |
| 437 | method_entry_listeners_, |
| 438 | listener, |
| 439 | &have_method_entry_listeners_); |
| 440 | PotentiallyAddListenerTo(kMethodExited, |
| 441 | events, |
| 442 | method_exit_listeners_, |
| 443 | listener, |
| 444 | &have_method_exit_listeners_); |
| 445 | PotentiallyAddListenerTo(kMethodUnwind, |
| 446 | events, |
| 447 | method_unwind_listeners_, |
| 448 | listener, |
| 449 | &have_method_unwind_listeners_); |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 450 | PotentiallyAddListenerTo(kBranch, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 451 | events, |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 452 | branch_listeners_, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 453 | listener, |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 454 | &have_branch_listeners_); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 455 | PotentiallyAddListenerTo(kInvokeVirtualOrInterface, |
| 456 | events, |
| 457 | invoke_virtual_or_interface_listeners_, |
| 458 | listener, |
| 459 | &have_invoke_virtual_or_interface_listeners_); |
| 460 | PotentiallyAddListenerTo(kDexPcMoved, |
| 461 | events, |
| 462 | dex_pc_listeners_, |
| 463 | listener, |
| 464 | &have_dex_pc_listeners_); |
| 465 | PotentiallyAddListenerTo(kFieldRead, |
| 466 | events, |
| 467 | field_read_listeners_, |
| 468 | listener, |
| 469 | &have_field_read_listeners_); |
| 470 | PotentiallyAddListenerTo(kFieldWritten, |
| 471 | events, |
| 472 | field_write_listeners_, |
| 473 | listener, |
| 474 | &have_field_write_listeners_); |
| 475 | PotentiallyAddListenerTo(kExceptionCaught, |
| 476 | events, |
| 477 | exception_caught_listeners_, |
| 478 | listener, |
| 479 | &have_exception_caught_listeners_); |
Sebastien Hertz | ee1997a | 2013-09-19 14:47:09 +0200 | [diff] [blame] | 480 | UpdateInterpreterHandlerTable(); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 481 | } |
| 482 | |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 483 | static void PotentiallyRemoveListenerFrom(Instrumentation::InstrumentationEvent event, |
| 484 | uint32_t events, |
| 485 | std::list<InstrumentationListener*>& list, |
| 486 | InstrumentationListener* listener, |
| 487 | bool* has_listener) |
| 488 | REQUIRES(Locks::mutator_lock_, !Locks::thread_list_lock_, !Locks::classlinker_classes_lock_) { |
| 489 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
| 490 | if (!HasEvent(event, events)) { |
| 491 | return; |
| 492 | } |
| 493 | auto it = std::find(list.begin(), list.end(), listener); |
| 494 | if (it != list.end()) { |
| 495 | // Just update the entry, do not remove from the list. Removing entries in the list |
| 496 | // is unsafe when mutators are iterating over it. |
| 497 | *it = nullptr; |
| 498 | } |
| 499 | |
| 500 | // Check if the list contains any non-null listener, and update 'has_listener'. |
| 501 | for (InstrumentationListener* l : list) { |
| 502 | if (l != nullptr) { |
| 503 | *has_listener = true; |
| 504 | return; |
| 505 | } |
| 506 | } |
| 507 | *has_listener = false; |
| 508 | } |
| 509 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 510 | void Instrumentation::RemoveListener(InstrumentationListener* listener, uint32_t events) { |
| 511 | Locks::mutator_lock_->AssertExclusiveHeld(Thread::Current()); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 512 | PotentiallyRemoveListenerFrom(kMethodEntered, |
| 513 | events, |
| 514 | method_entry_listeners_, |
| 515 | listener, |
| 516 | &have_method_entry_listeners_); |
| 517 | PotentiallyRemoveListenerFrom(kMethodExited, |
| 518 | events, |
| 519 | method_exit_listeners_, |
| 520 | listener, |
| 521 | &have_method_exit_listeners_); |
| 522 | PotentiallyRemoveListenerFrom(kMethodUnwind, |
| 523 | events, |
| 524 | method_unwind_listeners_, |
| 525 | listener, |
| 526 | &have_method_unwind_listeners_); |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 527 | PotentiallyRemoveListenerFrom(kBranch, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 528 | events, |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 529 | branch_listeners_, |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 530 | listener, |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 531 | &have_branch_listeners_); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 532 | PotentiallyRemoveListenerFrom(kInvokeVirtualOrInterface, |
| 533 | events, |
| 534 | invoke_virtual_or_interface_listeners_, |
| 535 | listener, |
| 536 | &have_invoke_virtual_or_interface_listeners_); |
| 537 | PotentiallyRemoveListenerFrom(kDexPcMoved, |
| 538 | events, |
| 539 | dex_pc_listeners_, |
| 540 | listener, |
| 541 | &have_dex_pc_listeners_); |
| 542 | PotentiallyRemoveListenerFrom(kFieldRead, |
| 543 | events, |
| 544 | field_read_listeners_, |
| 545 | listener, |
| 546 | &have_field_read_listeners_); |
| 547 | PotentiallyRemoveListenerFrom(kFieldWritten, |
| 548 | events, |
| 549 | field_write_listeners_, |
| 550 | listener, |
| 551 | &have_field_write_listeners_); |
| 552 | PotentiallyRemoveListenerFrom(kExceptionCaught, |
| 553 | events, |
| 554 | exception_caught_listeners_, |
| 555 | listener, |
| 556 | &have_exception_caught_listeners_); |
Sebastien Hertz | ee1997a | 2013-09-19 14:47:09 +0200 | [diff] [blame] | 557 | UpdateInterpreterHandlerTable(); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 558 | } |
| 559 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 560 | Instrumentation::InstrumentationLevel Instrumentation::GetCurrentInstrumentationLevel() const { |
Alex Light | 4ba388a | 2017-01-27 10:26:49 -0800 | [diff] [blame] | 561 | if (interpreter_stubs_installed_) { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 562 | return InstrumentationLevel::kInstrumentWithInterpreter; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 563 | } else if (entry_exit_stubs_installed_) { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 564 | return InstrumentationLevel::kInstrumentWithInstrumentationStubs; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 565 | } else { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 566 | return InstrumentationLevel::kInstrumentNothing; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 567 | } |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 568 | } |
| 569 | |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 570 | bool Instrumentation::RequiresInstrumentationInstallation(InstrumentationLevel new_level) const { |
Alex Light | 4ba388a | 2017-01-27 10:26:49 -0800 | [diff] [blame] | 571 | // We need to reinstall instrumentation if we go to a different level. |
| 572 | return GetCurrentInstrumentationLevel() != new_level; |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 573 | } |
| 574 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 575 | void Instrumentation::ConfigureStubs(const char* key, InstrumentationLevel desired_level) { |
| 576 | // Store the instrumentation level for this key or remove it. |
| 577 | if (desired_level == InstrumentationLevel::kInstrumentNothing) { |
| 578 | // The client no longer needs instrumentation. |
| 579 | requested_instrumentation_levels_.erase(key); |
| 580 | } else { |
| 581 | // The client needs instrumentation. |
| 582 | requested_instrumentation_levels_.Overwrite(key, desired_level); |
| 583 | } |
| 584 | |
| 585 | // Look for the highest required instrumentation level. |
| 586 | InstrumentationLevel requested_level = InstrumentationLevel::kInstrumentNothing; |
| 587 | for (const auto& v : requested_instrumentation_levels_) { |
| 588 | requested_level = std::max(requested_level, v.second); |
| 589 | } |
| 590 | |
| 591 | interpret_only_ = (requested_level == InstrumentationLevel::kInstrumentWithInterpreter) || |
| 592 | forced_interpret_only_; |
| 593 | |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 594 | if (!RequiresInstrumentationInstallation(requested_level)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 595 | // We're already set. |
| 596 | return; |
| 597 | } |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 598 | Thread* const self = Thread::Current(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 599 | Runtime* runtime = Runtime::Current(); |
Sebastien Hertz | a8a697f | 2015-01-15 12:28:47 +0100 | [diff] [blame] | 600 | Locks::mutator_lock_->AssertExclusiveHeld(self); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 601 | Locks::thread_list_lock_->AssertNotHeld(self); |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 602 | if (requested_level > InstrumentationLevel::kInstrumentNothing) { |
Alex Light | 4ba388a | 2017-01-27 10:26:49 -0800 | [diff] [blame] | 603 | if (requested_level == InstrumentationLevel::kInstrumentWithInterpreter) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 604 | interpreter_stubs_installed_ = true; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 605 | entry_exit_stubs_installed_ = true; |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 606 | } else { |
| 607 | CHECK_EQ(requested_level, InstrumentationLevel::kInstrumentWithInstrumentationStubs); |
| 608 | entry_exit_stubs_installed_ = true; |
| 609 | interpreter_stubs_installed_ = false; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 610 | } |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 611 | InstallStubsClassVisitor visitor(this); |
| 612 | runtime->GetClassLinker()->VisitClasses(&visitor); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 613 | instrumentation_stubs_installed_ = true; |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 614 | MutexLock mu(self, *Locks::thread_list_lock_); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 615 | runtime->GetThreadList()->ForEach(InstrumentationInstallStack, this); |
| 616 | } else { |
| 617 | interpreter_stubs_installed_ = false; |
| 618 | entry_exit_stubs_installed_ = false; |
Mathieu Chartier | e0671ce | 2015-07-28 17:23:28 -0700 | [diff] [blame] | 619 | InstallStubsClassVisitor visitor(this); |
| 620 | runtime->GetClassLinker()->VisitClasses(&visitor); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 621 | // Restore stack only if there is no method currently deoptimized. |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 622 | bool empty; |
| 623 | { |
| 624 | ReaderMutexLock mu(self, deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 625 | empty = IsDeoptimizedMethodsEmpty(); // Avoid lock violation. |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 626 | } |
| 627 | if (empty) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 628 | MutexLock mu(self, *Locks::thread_list_lock_); |
| 629 | Runtime::Current()->GetThreadList()->ForEach(InstrumentationRestoreStack, this); |
Nicolas Geoffray | 5a23d2e | 2015-11-03 18:58:57 +0000 | [diff] [blame] | 630 | // Only do this after restoring, as walking the stack when restoring will see |
| 631 | // the instrumentation exit pc. |
| 632 | instrumentation_stubs_installed_ = false; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 633 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 634 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 635 | } |
| 636 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 637 | static void ResetQuickAllocEntryPointsForThread(Thread* thread, void* arg ATTRIBUTE_UNUSED) { |
Mathieu Chartier | 5ace201 | 2016-11-30 10:15:41 -0800 | [diff] [blame] | 638 | thread->ResetQuickAllocEntryPointsForThread(kUseReadBarrier && thread->GetIsGcMarking()); |
Ian Rogers | fa82427 | 2013-11-05 16:12:57 -0800 | [diff] [blame] | 639 | } |
| 640 | |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 641 | void Instrumentation::SetEntrypointsInstrumented(bool instrumented) { |
| 642 | Thread* self = Thread::Current(); |
Mathieu Chartier | 661974a | 2014-01-09 11:23:53 -0800 | [diff] [blame] | 643 | Runtime* runtime = Runtime::Current(); |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 644 | Locks::mutator_lock_->AssertNotHeld(self); |
| 645 | Locks::instrument_entrypoints_lock_->AssertHeld(self); |
| 646 | if (runtime->IsStarted()) { |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 647 | ScopedSuspendAll ssa(__FUNCTION__); |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 648 | MutexLock mu(self, *Locks::runtime_shutdown_lock_); |
Mathieu Chartier | 661974a | 2014-01-09 11:23:53 -0800 | [diff] [blame] | 649 | SetQuickAllocEntryPointsInstrumented(instrumented); |
| 650 | ResetQuickAllocEntryPoints(); |
Mathieu Chartier | 50e9331 | 2016-03-16 11:25:29 -0700 | [diff] [blame] | 651 | alloc_entrypoints_instrumented_ = instrumented; |
Mathieu Chartier | 4f55e22 | 2015-09-04 13:26:21 -0700 | [diff] [blame] | 652 | } else { |
| 653 | MutexLock mu(self, *Locks::runtime_shutdown_lock_); |
| 654 | SetQuickAllocEntryPointsInstrumented(instrumented); |
Andreas Gampe | 157c77e | 2016-10-17 17:44:41 -0700 | [diff] [blame] | 655 | |
| 656 | // Note: ResetQuickAllocEntryPoints only works when the runtime is started. Manually run the |
| 657 | // update for just this thread. |
Andreas Gampe | 162ae50 | 2016-10-18 10:03:42 -0700 | [diff] [blame] | 658 | // Note: self may be null. One of those paths is setting instrumentation in the Heap |
| 659 | // constructor for gcstress mode. |
| 660 | if (self != nullptr) { |
| 661 | ResetQuickAllocEntryPointsForThread(self, nullptr); |
| 662 | } |
Andreas Gampe | 157c77e | 2016-10-17 17:44:41 -0700 | [diff] [blame] | 663 | |
Mathieu Chartier | 50e9331 | 2016-03-16 11:25:29 -0700 | [diff] [blame] | 664 | alloc_entrypoints_instrumented_ = instrumented; |
Mathieu Chartier | 661974a | 2014-01-09 11:23:53 -0800 | [diff] [blame] | 665 | } |
| 666 | } |
| 667 | |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 668 | void Instrumentation::InstrumentQuickAllocEntryPoints() { |
| 669 | MutexLock mu(Thread::Current(), *Locks::instrument_entrypoints_lock_); |
| 670 | InstrumentQuickAllocEntryPointsLocked(); |
Ian Rogers | fa82427 | 2013-11-05 16:12:57 -0800 | [diff] [blame] | 671 | } |
| 672 | |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 673 | void Instrumentation::UninstrumentQuickAllocEntryPoints() { |
| 674 | MutexLock mu(Thread::Current(), *Locks::instrument_entrypoints_lock_); |
| 675 | UninstrumentQuickAllocEntryPointsLocked(); |
| 676 | } |
| 677 | |
| 678 | void Instrumentation::InstrumentQuickAllocEntryPointsLocked() { |
| 679 | Locks::instrument_entrypoints_lock_->AssertHeld(Thread::Current()); |
| 680 | if (quick_alloc_entry_points_instrumentation_counter_ == 0) { |
| 681 | SetEntrypointsInstrumented(true); |
Mathieu Chartier | cbb2d20 | 2013-11-14 17:45:16 -0800 | [diff] [blame] | 682 | } |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 683 | ++quick_alloc_entry_points_instrumentation_counter_; |
Mathieu Chartier | 9ef78b5 | 2014-09-25 17:03:12 -0700 | [diff] [blame] | 684 | } |
| 685 | |
| 686 | void Instrumentation::UninstrumentQuickAllocEntryPointsLocked() { |
| 687 | Locks::instrument_entrypoints_lock_->AssertHeld(Thread::Current()); |
| 688 | CHECK_GT(quick_alloc_entry_points_instrumentation_counter_, 0U); |
| 689 | --quick_alloc_entry_points_instrumentation_counter_; |
| 690 | if (quick_alloc_entry_points_instrumentation_counter_ == 0) { |
| 691 | SetEntrypointsInstrumented(false); |
| 692 | } |
Mathieu Chartier | cbb2d20 | 2013-11-14 17:45:16 -0800 | [diff] [blame] | 693 | } |
| 694 | |
| 695 | void Instrumentation::ResetQuickAllocEntryPoints() { |
| 696 | Runtime* runtime = Runtime::Current(); |
| 697 | if (runtime->IsStarted()) { |
Mathieu Chartier | e6da9af | 2013-12-16 11:54:42 -0800 | [diff] [blame] | 698 | MutexLock mu(Thread::Current(), *Locks::thread_list_lock_); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 699 | runtime->GetThreadList()->ForEach(ResetQuickAllocEntryPointsForThread, nullptr); |
Ian Rogers | fa82427 | 2013-11-05 16:12:57 -0800 | [diff] [blame] | 700 | } |
| 701 | } |
| 702 | |
Mingyao Yang | 3fd448a | 2016-05-10 14:30:41 -0700 | [diff] [blame] | 703 | void Instrumentation::UpdateMethodsCodeImpl(ArtMethod* method, const void* quick_code) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 704 | const void* new_quick_code; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 705 | if (LIKELY(!instrumentation_stubs_installed_)) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 706 | new_quick_code = quick_code; |
Jeff Hao | 65d15d9 | 2013-07-16 16:39:33 -0700 | [diff] [blame] | 707 | } else { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 708 | if ((interpreter_stubs_installed_ || IsDeoptimized(method)) && !method->IsNative()) { |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 709 | new_quick_code = GetQuickToInterpreterBridge(); |
Jeff Hao | 65d15d9 | 2013-07-16 16:39:33 -0700 | [diff] [blame] | 710 | } else { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 711 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 712 | if (class_linker->IsQuickResolutionStub(quick_code) || |
| 713 | class_linker->IsQuickToInterpreterBridge(quick_code)) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 714 | new_quick_code = quick_code; |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 715 | } else if (entry_exit_stubs_installed_) { |
| 716 | new_quick_code = GetQuickInstrumentationEntryPoint(); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 717 | } else { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 718 | new_quick_code = quick_code; |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 719 | } |
Jeff Hao | 65d15d9 | 2013-07-16 16:39:33 -0700 | [diff] [blame] | 720 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 721 | } |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 722 | UpdateEntrypoints(method, new_quick_code); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 723 | } |
| 724 | |
Mingyao Yang | 3fd448a | 2016-05-10 14:30:41 -0700 | [diff] [blame] | 725 | void Instrumentation::UpdateMethodsCode(ArtMethod* method, const void* quick_code) { |
| 726 | DCHECK(method->GetDeclaringClass()->IsResolved()); |
| 727 | UpdateMethodsCodeImpl(method, quick_code); |
| 728 | } |
| 729 | |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 730 | void Instrumentation::UpdateMethodsCodeForJavaDebuggable(ArtMethod* method, |
| 731 | const void* quick_code) { |
| 732 | // When the runtime is set to Java debuggable, we may update the entry points of |
| 733 | // all methods of a class to the interpreter bridge. A method's declaring class |
| 734 | // might not be in resolved state yet in that case, so we bypass the DCHECK in |
| 735 | // UpdateMethodsCode. |
Mingyao Yang | 3fd448a | 2016-05-10 14:30:41 -0700 | [diff] [blame] | 736 | UpdateMethodsCodeImpl(method, quick_code); |
| 737 | } |
| 738 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 739 | bool Instrumentation::AddDeoptimizedMethod(ArtMethod* method) { |
| 740 | if (IsDeoptimizedMethod(method)) { |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 741 | // Already in the map. Return. |
| 742 | return false; |
| 743 | } |
| 744 | // Not found. Add it. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 745 | deoptimized_methods_.insert(method); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 746 | return true; |
| 747 | } |
| 748 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 749 | bool Instrumentation::IsDeoptimizedMethod(ArtMethod* method) { |
| 750 | return deoptimized_methods_.find(method) != deoptimized_methods_.end(); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 751 | } |
| 752 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 753 | ArtMethod* Instrumentation::BeginDeoptimizedMethod() { |
| 754 | if (deoptimized_methods_.empty()) { |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 755 | // Empty. |
| 756 | return nullptr; |
| 757 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 758 | return *deoptimized_methods_.begin(); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 759 | } |
| 760 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 761 | bool Instrumentation::RemoveDeoptimizedMethod(ArtMethod* method) { |
| 762 | auto it = deoptimized_methods_.find(method); |
| 763 | if (it == deoptimized_methods_.end()) { |
| 764 | return false; |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 765 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 766 | deoptimized_methods_.erase(it); |
| 767 | return true; |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 768 | } |
| 769 | |
| 770 | bool Instrumentation::IsDeoptimizedMethodsEmpty() const { |
| 771 | return deoptimized_methods_.empty(); |
| 772 | } |
| 773 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 774 | void Instrumentation::Deoptimize(ArtMethod* method) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 775 | CHECK(!method->IsNative()); |
| 776 | CHECK(!method->IsProxyMethod()); |
Alex Light | 9139e00 | 2015-10-09 15:59:48 -0700 | [diff] [blame] | 777 | CHECK(method->IsInvokable()); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 778 | |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 779 | Thread* self = Thread::Current(); |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 780 | { |
| 781 | WriterMutexLock mu(self, deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 782 | bool has_not_been_deoptimized = AddDeoptimizedMethod(method); |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 783 | CHECK(has_not_been_deoptimized) << "Method " << ArtMethod::PrettyMethod(method) |
Daniel Mihalyi | ca1d06c | 2014-08-18 18:45:31 +0200 | [diff] [blame] | 784 | << " is already deoptimized"; |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 785 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 786 | if (!interpreter_stubs_installed_) { |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 787 | UpdateEntrypoints(method, GetQuickInstrumentationEntryPoint()); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 788 | |
| 789 | // Install instrumentation exit stub and instrumentation frames. We may already have installed |
| 790 | // these previously so it will only cover the newly created frames. |
| 791 | instrumentation_stubs_installed_ = true; |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 792 | MutexLock mu(self, *Locks::thread_list_lock_); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 793 | Runtime::Current()->GetThreadList()->ForEach(InstrumentationInstallStack, this); |
| 794 | } |
| 795 | } |
| 796 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 797 | void Instrumentation::Undeoptimize(ArtMethod* method) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 798 | CHECK(!method->IsNative()); |
| 799 | CHECK(!method->IsProxyMethod()); |
Alex Light | 9139e00 | 2015-10-09 15:59:48 -0700 | [diff] [blame] | 800 | CHECK(method->IsInvokable()); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 801 | |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 802 | Thread* self = Thread::Current(); |
| 803 | bool empty; |
| 804 | { |
| 805 | WriterMutexLock mu(self, deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 806 | bool found_and_erased = RemoveDeoptimizedMethod(method); |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 807 | CHECK(found_and_erased) << "Method " << ArtMethod::PrettyMethod(method) |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 808 | << " is not deoptimized"; |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 809 | empty = IsDeoptimizedMethodsEmpty(); |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 810 | } |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 811 | |
| 812 | // Restore code and possibly stack only if we did not deoptimize everything. |
| 813 | if (!interpreter_stubs_installed_) { |
| 814 | // Restore its code or resolution trampoline. |
| 815 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | ef7d42f | 2014-01-06 12:55:46 -0800 | [diff] [blame] | 816 | if (method->IsStatic() && !method->IsConstructor() && |
| 817 | !method->GetDeclaringClass()->IsInitialized()) { |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 818 | UpdateEntrypoints(method, GetQuickResolutionStub()); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 819 | } else { |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 820 | const void* quick_code = NeedDebugVersionFor(method) |
| 821 | ? GetQuickToInterpreterBridge() |
| 822 | : class_linker->GetQuickOatCodeFor(method); |
Elliott Hughes | 956af0f | 2014-12-11 14:34:28 -0800 | [diff] [blame] | 823 | UpdateEntrypoints(method, quick_code); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 824 | } |
| 825 | |
| 826 | // 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] | 827 | if (empty) { |
| 828 | MutexLock mu(self, *Locks::thread_list_lock_); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 829 | Runtime::Current()->GetThreadList()->ForEach(InstrumentationRestoreStack, this); |
| 830 | instrumentation_stubs_installed_ = false; |
| 831 | } |
| 832 | } |
| 833 | } |
| 834 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 835 | bool Instrumentation::IsDeoptimized(ArtMethod* method) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 836 | DCHECK(method != nullptr); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 837 | ReaderMutexLock mu(Thread::Current(), deoptimized_methods_lock_); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 838 | return IsDeoptimizedMethod(method); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 839 | } |
| 840 | |
| 841 | void Instrumentation::EnableDeoptimization() { |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 842 | ReaderMutexLock mu(Thread::Current(), deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 843 | CHECK(IsDeoptimizedMethodsEmpty()); |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 844 | CHECK_EQ(deoptimization_enabled_, false); |
| 845 | deoptimization_enabled_ = true; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 846 | } |
| 847 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 848 | void Instrumentation::DisableDeoptimization(const char* key) { |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 849 | CHECK_EQ(deoptimization_enabled_, true); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 850 | // If we deoptimized everything, undo it. |
Alex Light | dba6148 | 2016-12-21 08:20:29 -0800 | [diff] [blame] | 851 | InstrumentationLevel level = GetCurrentInstrumentationLevel(); |
| 852 | if (level == InstrumentationLevel::kInstrumentWithInterpreter) { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 853 | UndeoptimizeEverything(key); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 854 | } |
| 855 | // Undeoptimized selected methods. |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 856 | while (true) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 857 | ArtMethod* method; |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 858 | { |
| 859 | ReaderMutexLock mu(Thread::Current(), deoptimized_methods_lock_); |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 860 | if (IsDeoptimizedMethodsEmpty()) { |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 861 | break; |
| 862 | } |
Hiroshi Yamauchi | 799eb3a | 2014-07-18 15:38:17 -0700 | [diff] [blame] | 863 | method = BeginDeoptimizedMethod(); |
| 864 | CHECK(method != nullptr); |
Mathieu Chartier | 3b05e9b | 2014-03-25 09:29:43 -0700 | [diff] [blame] | 865 | } |
| 866 | Undeoptimize(method); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 867 | } |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 868 | deoptimization_enabled_ = false; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 869 | } |
| 870 | |
Sebastien Hertz | 11d40c2 | 2014-02-19 18:00:17 +0100 | [diff] [blame] | 871 | // Indicates if instrumentation should notify method enter/exit events to the listeners. |
| 872 | bool Instrumentation::ShouldNotifyMethodEnterExitEvents() const { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 873 | if (!HasMethodEntryListeners() && !HasMethodExitListeners()) { |
| 874 | return false; |
| 875 | } |
Sebastien Hertz | 7ec2f1c | 2014-03-27 20:06:47 +0100 | [diff] [blame] | 876 | return !deoptimization_enabled_ && !interpreter_stubs_installed_; |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 877 | } |
| 878 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 879 | void Instrumentation::DeoptimizeEverything(const char* key) { |
| 880 | CHECK(deoptimization_enabled_); |
| 881 | ConfigureStubs(key, InstrumentationLevel::kInstrumentWithInterpreter); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 882 | } |
| 883 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 884 | void Instrumentation::UndeoptimizeEverything(const char* key) { |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 885 | CHECK(interpreter_stubs_installed_); |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 886 | CHECK(deoptimization_enabled_); |
| 887 | ConfigureStubs(key, InstrumentationLevel::kInstrumentNothing); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 888 | } |
| 889 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 890 | void Instrumentation::EnableMethodTracing(const char* key, bool needs_interpreter) { |
| 891 | InstrumentationLevel level; |
| 892 | if (needs_interpreter) { |
| 893 | level = InstrumentationLevel::kInstrumentWithInterpreter; |
| 894 | } else { |
| 895 | level = InstrumentationLevel::kInstrumentWithInstrumentationStubs; |
| 896 | } |
| 897 | ConfigureStubs(key, level); |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 898 | } |
| 899 | |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 900 | void Instrumentation::DisableMethodTracing(const char* key) { |
| 901 | ConfigureStubs(key, InstrumentationLevel::kInstrumentNothing); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 902 | } |
| 903 | |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 904 | const void* Instrumentation::GetQuickCodeFor(ArtMethod* method, PointerSize pointer_size) const { |
Vladimir Marko | 97d7e1c | 2016-10-04 14:44:28 +0100 | [diff] [blame] | 905 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 906 | if (LIKELY(!instrumentation_stubs_installed_)) { |
Mathieu Chartier | a7dd038 | 2014-11-20 17:08:58 -0800 | [diff] [blame] | 907 | const void* code = method->GetEntryPointFromQuickCompiledCodePtrSize(pointer_size); |
Vladimir Marko | 8a63057 | 2014-04-09 18:45:35 +0100 | [diff] [blame] | 908 | DCHECK(code != nullptr); |
Ian Rogers | 6f3dbba | 2014-10-14 17:41:57 -0700 | [diff] [blame] | 909 | if (LIKELY(!class_linker->IsQuickResolutionStub(code) && |
| 910 | !class_linker->IsQuickToInterpreterBridge(code)) && |
| 911 | !class_linker->IsQuickResolutionStub(code) && |
| 912 | !class_linker->IsQuickToInterpreterBridge(code)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 913 | return code; |
| 914 | } |
| 915 | } |
Vladimir Marko | 97d7e1c | 2016-10-04 14:44:28 +0100 | [diff] [blame] | 916 | return class_linker->GetQuickOatCodeFor(method); |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 917 | } |
| 918 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 919 | void Instrumentation::MethodEnterEventImpl(Thread* thread, mirror::Object* this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 920 | ArtMethod* method, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 921 | uint32_t dex_pc) const { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 922 | if (HasMethodEntryListeners()) { |
| 923 | for (InstrumentationListener* listener : method_entry_listeners_) { |
| 924 | if (listener != nullptr) { |
| 925 | listener->MethodEntered(thread, this_object, method, dex_pc); |
| 926 | } |
| 927 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 928 | } |
| 929 | } |
| 930 | |
| 931 | void Instrumentation::MethodExitEventImpl(Thread* thread, mirror::Object* this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 932 | ArtMethod* method, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 933 | uint32_t dex_pc, const JValue& return_value) const { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 934 | if (HasMethodExitListeners()) { |
| 935 | for (InstrumentationListener* listener : method_exit_listeners_) { |
| 936 | if (listener != nullptr) { |
| 937 | listener->MethodExited(thread, this_object, method, dex_pc, return_value); |
| 938 | } |
| 939 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 940 | } |
| 941 | } |
| 942 | |
| 943 | void Instrumentation::MethodUnwindEvent(Thread* thread, mirror::Object* this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 944 | ArtMethod* method, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 945 | uint32_t dex_pc) const { |
Sebastien Hertz | 0462c4c | 2015-04-01 16:34:17 +0200 | [diff] [blame] | 946 | if (HasMethodUnwindListeners()) { |
Mathieu Chartier | 02e2511 | 2013-08-14 16:14:24 -0700 | [diff] [blame] | 947 | for (InstrumentationListener* listener : method_unwind_listeners_) { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 948 | if (listener != nullptr) { |
| 949 | listener->MethodUnwind(thread, this_object, method, dex_pc); |
| 950 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 951 | } |
| 952 | } |
| 953 | } |
| 954 | |
| 955 | void Instrumentation::DexPcMovedEventImpl(Thread* thread, mirror::Object* this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 956 | ArtMethod* method, |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 957 | uint32_t dex_pc) const { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 958 | for (InstrumentationListener* listener : dex_pc_listeners_) { |
| 959 | if (listener != nullptr) { |
| 960 | listener->DexPcMoved(thread, this_object, method, dex_pc); |
| 961 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 962 | } |
| 963 | } |
| 964 | |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 965 | void Instrumentation::BranchImpl(Thread* thread, |
| 966 | ArtMethod* method, |
| 967 | uint32_t dex_pc, |
| 968 | int32_t offset) const { |
| 969 | for (InstrumentationListener* listener : branch_listeners_) { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 970 | if (listener != nullptr) { |
Nicolas Geoffray | 81f0f95 | 2016-01-20 16:25:19 +0000 | [diff] [blame] | 971 | listener->Branch(thread, method, dex_pc, offset); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 972 | } |
Mathieu Chartier | e5f13e5 | 2015-02-24 09:37:21 -0800 | [diff] [blame] | 973 | } |
| 974 | } |
| 975 | |
Nicolas Geoffray | 5550ca8 | 2015-08-21 18:38:30 +0100 | [diff] [blame] | 976 | void Instrumentation::InvokeVirtualOrInterfaceImpl(Thread* thread, |
| 977 | mirror::Object* this_object, |
| 978 | ArtMethod* caller, |
| 979 | uint32_t dex_pc, |
| 980 | ArtMethod* callee) const { |
Roland Levillain | 91d65e0 | 2016-01-19 15:59:16 +0000 | [diff] [blame] | 981 | // We cannot have thread suspension since that would cause the this_object parameter to |
Mathieu Chartier | 3fdb3fe | 2016-01-14 10:24:28 -0800 | [diff] [blame] | 982 | // potentially become a dangling pointer. An alternative could be to put it in a handle instead. |
Mathieu Chartier | 268764d | 2016-09-13 12:09:38 -0700 | [diff] [blame] | 983 | ScopedAssertNoThreadSuspension ants(__FUNCTION__); |
Nicolas Geoffray | 5550ca8 | 2015-08-21 18:38:30 +0100 | [diff] [blame] | 984 | for (InstrumentationListener* listener : invoke_virtual_or_interface_listeners_) { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 985 | if (listener != nullptr) { |
| 986 | listener->InvokeVirtualOrInterface(thread, this_object, caller, dex_pc, callee); |
| 987 | } |
Nicolas Geoffray | 5550ca8 | 2015-08-21 18:38:30 +0100 | [diff] [blame] | 988 | } |
| 989 | } |
| 990 | |
Sebastien Hertz | 3f52eaf | 2014-04-04 17:50:18 +0200 | [diff] [blame] | 991 | void Instrumentation::FieldReadEventImpl(Thread* thread, mirror::Object* this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 992 | ArtMethod* method, uint32_t dex_pc, |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 993 | ArtField* field) const { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 994 | for (InstrumentationListener* listener : field_read_listeners_) { |
| 995 | if (listener != nullptr) { |
| 996 | listener->FieldRead(thread, this_object, method, dex_pc, field); |
| 997 | } |
Sebastien Hertz | 3f52eaf | 2014-04-04 17:50:18 +0200 | [diff] [blame] | 998 | } |
| 999 | } |
| 1000 | |
| 1001 | void Instrumentation::FieldWriteEventImpl(Thread* thread, mirror::Object* this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1002 | ArtMethod* method, uint32_t dex_pc, |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 1003 | ArtField* field, const JValue& field_value) const { |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1004 | for (InstrumentationListener* listener : field_write_listeners_) { |
| 1005 | if (listener != nullptr) { |
| 1006 | listener->FieldWritten(thread, this_object, method, dex_pc, field, field_value); |
| 1007 | } |
Sebastien Hertz | 3f52eaf | 2014-04-04 17:50:18 +0200 | [diff] [blame] | 1008 | } |
| 1009 | } |
| 1010 | |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 1011 | void Instrumentation::ExceptionCaughtEvent(Thread* thread, |
Sebastien Hertz | 947ff08 | 2013-09-17 14:10:13 +0200 | [diff] [blame] | 1012 | mirror::Throwable* exception_object) const { |
Hiroshi Yamauchi | 3481f7a | 2017-02-10 12:07:36 -0800 | [diff] [blame^] | 1013 | Thread* self = Thread::Current(); |
| 1014 | StackHandleScope<1> hs(self); |
| 1015 | Handle<mirror::Throwable> h_exception(hs.NewHandle(exception_object)); |
Sebastien Hertz | 9f10203 | 2014-05-23 08:59:42 +0200 | [diff] [blame] | 1016 | if (HasExceptionCaughtListeners()) { |
Hiroshi Yamauchi | 3481f7a | 2017-02-10 12:07:36 -0800 | [diff] [blame^] | 1017 | DCHECK_EQ(thread->GetException(), h_exception.Get()); |
Jeff Hao | c0bd4da | 2013-04-11 15:52:28 -0700 | [diff] [blame] | 1018 | thread->ClearException(); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1019 | for (InstrumentationListener* listener : exception_caught_listeners_) { |
| 1020 | if (listener != nullptr) { |
Hiroshi Yamauchi | 3481f7a | 2017-02-10 12:07:36 -0800 | [diff] [blame^] | 1021 | listener->ExceptionCaught(thread, h_exception.Get()); |
Nicolas Geoffray | 514a616 | 2015-11-03 11:44:24 +0000 | [diff] [blame] | 1022 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1023 | } |
Hiroshi Yamauchi | 3481f7a | 2017-02-10 12:07:36 -0800 | [diff] [blame^] | 1024 | thread->SetException(h_exception.Get()); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1025 | } |
| 1026 | } |
| 1027 | |
Sebastien Hertz | b2feaaf | 2015-10-12 13:40:10 +0000 | [diff] [blame] | 1028 | // Computes a frame ID by ignoring inlined frames. |
| 1029 | size_t Instrumentation::ComputeFrameId(Thread* self, |
| 1030 | size_t frame_depth, |
| 1031 | size_t inlined_frames_before_frame) { |
| 1032 | CHECK_GE(frame_depth, inlined_frames_before_frame); |
| 1033 | size_t no_inline_depth = frame_depth - inlined_frames_before_frame; |
| 1034 | return StackVisitor::ComputeNumFrames(self, kInstrumentationStackWalk) - no_inline_depth; |
| 1035 | } |
| 1036 | |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1037 | static void CheckStackDepth(Thread* self, const InstrumentationStackFrame& instrumentation_frame, |
| 1038 | int delta) |
Andreas Gampe | bdf7f1c | 2016-08-30 16:38:47 -0700 | [diff] [blame] | 1039 | REQUIRES_SHARED(Locks::mutator_lock_) { |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 1040 | size_t frame_id = StackVisitor::ComputeNumFrames(self, kInstrumentationStackWalk) + delta; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1041 | if (frame_id != instrumentation_frame.frame_id_) { |
| 1042 | LOG(ERROR) << "Expected frame_id=" << frame_id << " but found " |
| 1043 | << instrumentation_frame.frame_id_; |
| 1044 | StackVisitor::DescribeStack(self); |
| 1045 | CHECK_EQ(frame_id, instrumentation_frame.frame_id_); |
| 1046 | } |
| 1047 | } |
| 1048 | |
| 1049 | void Instrumentation::PushInstrumentationStackFrame(Thread* self, mirror::Object* this_object, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1050 | ArtMethod* method, |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 1051 | uintptr_t lr, bool interpreter_entry) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1052 | // We have a callee-save frame meaning this value is guaranteed to never be 0. |
Nicolas Geoffray | 8e5bd18 | 2015-05-06 11:34:34 +0100 | [diff] [blame] | 1053 | size_t frame_id = StackVisitor::ComputeNumFrames(self, kInstrumentationStackWalk); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1054 | std::deque<instrumentation::InstrumentationStackFrame>* stack = self->GetInstrumentationStack(); |
| 1055 | if (kVerboseInstrumentation) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1056 | LOG(INFO) << "Entering " << ArtMethod::PrettyMethod(method) << " from PC " |
| 1057 | << reinterpret_cast<void*>(lr); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1058 | } |
| 1059 | instrumentation::InstrumentationStackFrame instrumentation_frame(this_object, method, lr, |
Jeff Hao | 9a916d3 | 2013-06-27 18:45:37 -0700 | [diff] [blame] | 1060 | frame_id, interpreter_entry); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1061 | stack->push_front(instrumentation_frame); |
| 1062 | |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 1063 | if (!interpreter_entry) { |
| 1064 | MethodEnterEvent(self, this_object, method, 0); |
| 1065 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1066 | } |
| 1067 | |
Andreas Gampe | d58342c | 2014-06-05 14:18:08 -0700 | [diff] [blame] | 1068 | TwoWordReturn Instrumentation::PopInstrumentationStackFrame(Thread* self, uintptr_t* return_pc, |
| 1069 | uint64_t gpr_result, |
| 1070 | uint64_t fpr_result) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1071 | // Do the pop. |
| 1072 | std::deque<instrumentation::InstrumentationStackFrame>* stack = self->GetInstrumentationStack(); |
| 1073 | CHECK_GT(stack->size(), 0U); |
| 1074 | InstrumentationStackFrame instrumentation_frame = stack->front(); |
| 1075 | stack->pop_front(); |
| 1076 | |
| 1077 | // Set return PC and check the sanity of the stack. |
| 1078 | *return_pc = instrumentation_frame.return_pc_; |
| 1079 | CheckStackDepth(self, instrumentation_frame, 0); |
Ian Rogers | 1d8cdbc | 2014-09-22 22:51:09 -0700 | [diff] [blame] | 1080 | self->VerifyStack(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1081 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1082 | ArtMethod* method = instrumentation_frame.method_; |
Mathieu Chartier | bfd9a43 | 2014-05-21 17:43:44 -0700 | [diff] [blame] | 1083 | uint32_t length; |
Andreas Gampe | 542451c | 2016-07-26 09:02:02 -0700 | [diff] [blame] | 1084 | const PointerSize pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize(); |
Mingyao Yang | 99170c6 | 2015-07-06 11:10:37 -0700 | [diff] [blame] | 1085 | char return_shorty = method->GetInterfaceMethodIfProxy(pointer_size)->GetShorty(&length)[0]; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1086 | JValue return_value; |
| 1087 | if (return_shorty == 'V') { |
| 1088 | return_value.SetJ(0); |
| 1089 | } else if (return_shorty == 'F' || return_shorty == 'D') { |
| 1090 | return_value.SetJ(fpr_result); |
| 1091 | } else { |
| 1092 | return_value.SetJ(gpr_result); |
| 1093 | } |
| 1094 | // TODO: improve the dex pc information here, requires knowledge of current PC as opposed to |
| 1095 | // return_pc. |
| 1096 | uint32_t dex_pc = DexFile::kDexNoIndex; |
| 1097 | mirror::Object* this_object = instrumentation_frame.this_object_; |
Sebastien Hertz | 320deb2 | 2014-06-11 19:45:05 +0200 | [diff] [blame] | 1098 | if (!instrumentation_frame.interpreter_entry_) { |
| 1099 | MethodExitEvent(self, this_object, instrumentation_frame.method_, dex_pc, return_value); |
| 1100 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 1101 | |
Sebastien Hertz | 138dbfc | 2013-12-04 18:15:25 +0100 | [diff] [blame] | 1102 | // Deoptimize if the caller needs to continue execution in the interpreter. Do nothing if we get |
| 1103 | // back to an upcall. |
| 1104 | NthCallerVisitor visitor(self, 1, true); |
| 1105 | visitor.WalkStack(true); |
Sebastien Hertz | 270a0e1 | 2015-01-16 19:49:09 +0100 | [diff] [blame] | 1106 | bool deoptimize = (visitor.caller != nullptr) && |
Daniel Mihalyi | eb07669 | 2014-08-22 17:33:31 +0200 | [diff] [blame] | 1107 | (interpreter_stubs_installed_ || IsDeoptimized(visitor.caller) || |
| 1108 | Dbg::IsForcedInterpreterNeededForUpcall(self, visitor.caller)); |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 1109 | if (deoptimize && Runtime::Current()->IsAsyncDeoptimizeable(*return_pc)) { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1110 | if (kVerboseInstrumentation) { |
Andreas Gampe | 46ee31b | 2016-12-14 10:11:49 -0800 | [diff] [blame] | 1111 | LOG(INFO) << "Deoptimizing " |
| 1112 | << visitor.caller->PrettyMethod() |
| 1113 | << " by returning from " |
| 1114 | << method->PrettyMethod() |
| 1115 | << " with result " |
| 1116 | << std::hex << return_value.GetJ() << std::dec |
| 1117 | << " in " |
| 1118 | << *self; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1119 | } |
Nicolas Geoffray | 73be1e8 | 2015-09-17 15:22:56 +0100 | [diff] [blame] | 1120 | self->PushDeoptimizationContext(return_value, |
| 1121 | return_shorty == 'L', |
| 1122 | false /* from_code */, |
Sebastien Hertz | 0747466 | 2015-08-25 15:12:33 +0000 | [diff] [blame] | 1123 | nullptr /* no pending exception */); |
Andreas Gampe | d58342c | 2014-06-05 14:18:08 -0700 | [diff] [blame] | 1124 | return GetTwoWordSuccessValue(*return_pc, |
| 1125 | reinterpret_cast<uintptr_t>(GetQuickDeoptimizationEntryPoint())); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1126 | } else { |
Nicolas Geoffray | a0619e2 | 2016-12-20 13:57:43 +0000 | [diff] [blame] | 1127 | if (deoptimize && !Runtime::Current()->IsAsyncDeoptimizeable(*return_pc)) { |
| 1128 | LOG(WARNING) << "Got a deoptimization request on un-deoptimizable " << method->PrettyMethod() |
| 1129 | << " at PC " << reinterpret_cast<void*>(*return_pc); |
| 1130 | } |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1131 | if (kVerboseInstrumentation) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1132 | LOG(INFO) << "Returning from " << method->PrettyMethod() |
Brian Carlstrom | 2d88862 | 2013-07-18 17:02:00 -0700 | [diff] [blame] | 1133 | << " to PC " << reinterpret_cast<void*>(*return_pc); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1134 | } |
Andreas Gampe | d58342c | 2014-06-05 14:18:08 -0700 | [diff] [blame] | 1135 | return GetTwoWordSuccessValue(0, *return_pc); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1136 | } |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 1137 | } |
| 1138 | |
Mingyao Yang | f711f2c | 2016-05-23 12:29:39 -0700 | [diff] [blame] | 1139 | uintptr_t Instrumentation::PopMethodForUnwind(Thread* self, bool is_deoptimization) const { |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1140 | // Do the pop. |
| 1141 | std::deque<instrumentation::InstrumentationStackFrame>* stack = self->GetInstrumentationStack(); |
| 1142 | CHECK_GT(stack->size(), 0U); |
| 1143 | InstrumentationStackFrame instrumentation_frame = stack->front(); |
| 1144 | // TODO: bring back CheckStackDepth(self, instrumentation_frame, 2); |
| 1145 | stack->pop_front(); |
| 1146 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 1147 | ArtMethod* method = instrumentation_frame.method_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1148 | if (is_deoptimization) { |
| 1149 | if (kVerboseInstrumentation) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1150 | LOG(INFO) << "Popping for deoptimization " << ArtMethod::PrettyMethod(method); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1151 | } |
| 1152 | } else { |
| 1153 | if (kVerboseInstrumentation) { |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1154 | LOG(INFO) << "Popping for unwind " << ArtMethod::PrettyMethod(method); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1155 | } |
| 1156 | |
| 1157 | // Notify listeners of method unwind. |
| 1158 | // TODO: improve the dex pc information here, requires knowledge of current PC as opposed to |
| 1159 | // return_pc. |
| 1160 | uint32_t dex_pc = DexFile::kDexNoIndex; |
| 1161 | MethodUnwindEvent(self, instrumentation_frame.this_object_, method, dex_pc); |
| 1162 | } |
Mingyao Yang | f711f2c | 2016-05-23 12:29:39 -0700 | [diff] [blame] | 1163 | return instrumentation_frame.return_pc_; |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1164 | } |
| 1165 | |
| 1166 | std::string InstrumentationStackFrame::Dump() const { |
| 1167 | std::ostringstream os; |
David Sehr | 709b070 | 2016-10-13 09:12:37 -0700 | [diff] [blame] | 1168 | os << "Frame " << frame_id_ << " " << ArtMethod::PrettyMethod(method_) << ":" |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 1169 | << reinterpret_cast<void*>(return_pc_) << " this=" << reinterpret_cast<void*>(this_object_); |
| 1170 | return os.str(); |
| 1171 | } |
| 1172 | |
| 1173 | } // namespace instrumentation |
jeffhao | 725a957 | 2012-11-13 18:20:12 -0800 | [diff] [blame] | 1174 | } // namespace art |