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 #ifndef ART_RUNTIME_MIRROR_THROWABLE_H_ 18 #define ART_RUNTIME_MIRROR_THROWABLE_H_ 19 20 #include "gc_root.h" 21 #include "object.h" 22 #include "object_callbacks.h" 23 #include "string.h" 24 25 namespace art { 26 27 struct ThrowableOffsets; 28 29 namespace mirror { 30 31 // C++ mirror of java.lang.Throwable 32 class MANAGED Throwable : public Object { 33 public: 34 void SetDetailMessage(ObjPtr<String> new_detail_message) REQUIRES_SHARED(Locks::mutator_lock_); 35 36 String* GetDetailMessage() REQUIRES_SHARED(Locks::mutator_lock_) { 37 return GetFieldObject<String>(OFFSET_OF_OBJECT_MEMBER(Throwable, detail_message_)); 38 } 39 40 std::string Dump() REQUIRES_SHARED(Locks::mutator_lock_); 41 42 // This is a runtime version of initCause, you shouldn't use it if initCause may have been 43 // overridden. Also it asserts rather than throwing exceptions. Currently this is only used 44 // in cases like the verifier where the checks cannot fail and initCause isn't overridden. 45 void SetCause(ObjPtr<Throwable> cause) REQUIRES_SHARED(Locks::mutator_lock_); 46 void SetStackState(ObjPtr<Object> state) REQUIRES_SHARED(Locks::mutator_lock_); 47 bool IsCheckedException() REQUIRES_SHARED(Locks::mutator_lock_); 48 49 static Class* GetJavaLangThrowable() REQUIRES_SHARED(Locks::mutator_lock_) { 50 DCHECK(!java_lang_Throwable_.IsNull()); 51 return java_lang_Throwable_.Read(); 52 } 53 54 int32_t GetStackDepth() REQUIRES_SHARED(Locks::mutator_lock_); 55 56 static void SetClass(ObjPtr<Class> java_lang_Throwable); 57 static void ResetClass(); 58 static void VisitRoots(RootVisitor* visitor) 59 REQUIRES_SHARED(Locks::mutator_lock_); 60 61 private: 62 Object* GetStackState() REQUIRES_SHARED(Locks::mutator_lock_) { 63 return GetFieldObjectVolatile<Object>(OFFSET_OF_OBJECT_MEMBER(Throwable, backtrace_)); 64 } 65 Object* GetStackTrace() REQUIRES_SHARED(Locks::mutator_lock_) { 66 return GetFieldObjectVolatile<Object>(OFFSET_OF_OBJECT_MEMBER(Throwable, backtrace_)); 67 } 68 69 // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses". 70 HeapReference<Object> backtrace_; // Note this is Java volatile: 71 HeapReference<Throwable> cause_; 72 HeapReference<String> detail_message_; 73 HeapReference<Object> stack_trace_; 74 HeapReference<Object> suppressed_exceptions_; 75 76 static GcRoot<Class> java_lang_Throwable_; 77 78 friend struct art::ThrowableOffsets; // for verifying offset information 79 DISALLOW_IMPLICIT_CONSTRUCTORS(Throwable); 80 }; 81 82 } // namespace mirror 83 } // namespace art 84 85 #endif // ART_RUNTIME_MIRROR_THROWABLE_H_ 86
