1 /* 2 * Copyright (C) 2021 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 #ifndef SRC_TRACE_PROCESSOR_UTIL_ANNOTATED_CALLSITES_H_ 18 #define SRC_TRACE_PROCESSOR_UTIL_ANNOTATED_CALLSITES_H_ 19 20 #include <optional> 21 22 #include <unordered_map> 23 #include "src/trace_processor/containers/string_pool.h" 24 #include "src/trace_processor/storage/trace_storage.h" 25 26 namespace perfetto { 27 namespace trace_processor { 28 29 class TraceProcessorContext; 30 31 enum class CallsiteAnnotation { 32 kNone, 33 kCommonFrame, 34 kCommonFrameInterp, 35 kArtInterpreted, 36 kArtJit, 37 kArtAot, 38 }; 39 40 // Helper class to augment callsite with (currently Android-specific) 41 // annotations. A given callsite will always have the same annotation. This 42 // class will internally cache already computed annotations. An annotation 43 // depends only of the current callsite and the annotations of its parent 44 // callsites (going to the root). 45 class AnnotatedCallsites { 46 public: 47 explicit AnnotatedCallsites(const TraceProcessorContext* context); 48 GetAnnotation(const tables::StackProfileCallsiteTable::ConstRowReference & callsite)49 CallsiteAnnotation GetAnnotation( 50 const tables::StackProfileCallsiteTable::ConstRowReference& callsite) { 51 return Get(callsite).second; 52 } 53 54 private: 55 enum class MapType { 56 kArtInterp, 57 kArtJit, 58 kArtAot, 59 kNativeLibart, 60 kNativeOther, 61 kOther 62 }; 63 64 // Annotation FSM states: 65 // * kInitial: default, native-only callstacks never leave this state. 66 // * kEraseLibart: we've seen a managed frame, and will now "erase" (i.e. tag 67 // as a common-frame) frames belonging to the ART runtime. 68 // * kKeepNext: we've seen a special JNI trampoline for managed->native 69 // transition, keep the immediate child (even if it is in ART), 70 // and then go back to kEraseLibart. 71 // Regardless of the state, managed frames get annotated with their execution 72 // mode, based on the mapping. 73 enum class State { kInitial, kEraseLibart, kKeepNext }; 74 75 State GetState(std::optional<CallsiteId> id); 76 77 std::pair<State, CallsiteAnnotation> Get( 78 const tables::StackProfileCallsiteTable::ConstRowReference& callsite); 79 80 MapType GetMapType(MappingId id); 81 MapType ClassifyMap(NullTermStringView map); 82 83 const TraceProcessorContext& context_; 84 const std::optional<StringPool::Id> art_jni_trampoline_; 85 86 std::unordered_map<MappingId, MapType> map_types_; 87 std::unordered_map<CallsiteId, State> states_; 88 }; 89 90 } // namespace trace_processor 91 } // namespace perfetto 92 93 #endif // SRC_TRACE_PROCESSOR_UTIL_ANNOTATED_CALLSITES_H_ 94