| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "throwable.h" |
| |
| #include "android-base/stringprintf.h" |
| |
| #include "art_method-inl.h" |
| #include "base/enums.h" |
| #include "class-inl.h" |
| #include "dex_file-inl.h" |
| #include "gc/accounting/card_table-inl.h" |
| #include "object-inl.h" |
| #include "object_array.h" |
| #include "object_array-inl.h" |
| #include "object_callbacks.h" |
| #include "stack_trace_element.h" |
| #include "string.h" |
| #include "utils.h" |
| #include "well_known_classes.h" |
| |
| namespace art { |
| namespace mirror { |
| |
| using android::base::StringPrintf; |
| |
| GcRoot<Class> Throwable::java_lang_Throwable_; |
| |
| void Throwable::SetDetailMessage(ObjPtr<String> new_detail_message) { |
| if (Runtime::Current()->IsActiveTransaction()) { |
| SetFieldObject<true>(OFFSET_OF_OBJECT_MEMBER(Throwable, detail_message_), new_detail_message); |
| } else { |
| SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(Throwable, detail_message_), |
| new_detail_message); |
| } |
| } |
| |
| void Throwable::SetCause(ObjPtr<Throwable> cause) { |
| CHECK(cause != nullptr); |
| CHECK(cause != this); |
| Throwable* current_cause = GetFieldObject<Throwable>(OFFSET_OF_OBJECT_MEMBER(Throwable, cause_)); |
| CHECK(current_cause == nullptr || current_cause == this); |
| if (Runtime::Current()->IsActiveTransaction()) { |
| SetFieldObject<true>(OFFSET_OF_OBJECT_MEMBER(Throwable, cause_), cause); |
| } else { |
| SetFieldObject<false>(OFFSET_OF_OBJECT_MEMBER(Throwable, cause_), cause); |
| } |
| } |
| |
| void Throwable::SetStackState(ObjPtr<Object> state) REQUIRES_SHARED(Locks::mutator_lock_) { |
| CHECK(state != nullptr); |
| if (Runtime::Current()->IsActiveTransaction()) { |
| SetFieldObjectVolatile<true>(OFFSET_OF_OBJECT_MEMBER(Throwable, backtrace_), state); |
| } else { |
| SetFieldObjectVolatile<false>(OFFSET_OF_OBJECT_MEMBER(Throwable, backtrace_), state); |
| } |
| } |
| |
| bool Throwable::IsCheckedException() { |
| if (InstanceOf(WellKnownClasses::ToClass(WellKnownClasses::java_lang_Error))) { |
| return false; |
| } |
| return !InstanceOf(WellKnownClasses::ToClass(WellKnownClasses::java_lang_RuntimeException)); |
| } |
| |
| int32_t Throwable::GetStackDepth() { |
| ObjPtr<Object> stack_state = GetStackState(); |
| if (stack_state == nullptr || !stack_state->IsObjectArray()) { |
| return -1; |
| } |
| ObjPtr<mirror::ObjectArray<Object>> const trace = stack_state->AsObjectArray<Object>(); |
| const int32_t array_len = trace->GetLength(); |
| DCHECK_GT(array_len, 0); |
| // See method BuildInternalStackTraceVisitor::Init for the format. |
| return array_len - 1; |
| } |
| |
| std::string Throwable::Dump() { |
| std::string result(PrettyTypeOf()); |
| result += ": "; |
| ObjPtr<String> msg = GetDetailMessage(); |
| if (msg != nullptr) { |
| result += msg->ToModifiedUtf8(); |
| } |
| result += "\n"; |
| ObjPtr<Object> stack_state = GetStackState(); |
| // check stack state isn't missing or corrupt |
| if (stack_state != nullptr && stack_state->IsObjectArray()) { |
| ObjPtr<ObjectArray<Object>> object_array = stack_state->AsObjectArray<Object>(); |
| // Decode the internal stack trace into the depth and method trace |
| // See method BuildInternalStackTraceVisitor::Init for the format. |
| DCHECK_GT(object_array->GetLength(), 0); |
| ObjPtr<Object> methods_and_dex_pcs = object_array->Get(0); |
| DCHECK(methods_and_dex_pcs->IsIntArray() || methods_and_dex_pcs->IsLongArray()); |
| ObjPtr<PointerArray> method_trace = ObjPtr<PointerArray>::DownCast(methods_and_dex_pcs); |
| const int32_t array_len = method_trace->GetLength(); |
| CHECK_EQ(array_len % 2, 0); |
| const auto depth = array_len / 2; |
| if (depth == 0) { |
| result += "(Throwable with empty stack trace)\n"; |
| } else { |
| const PointerSize ptr_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize(); |
| for (int32_t i = 0; i < depth; ++i) { |
| ArtMethod* method = method_trace->GetElementPtrSize<ArtMethod*>(i, ptr_size); |
| uintptr_t dex_pc = method_trace->GetElementPtrSize<uintptr_t>(i + depth, ptr_size); |
| int32_t line_number = method->GetLineNumFromDexPC(dex_pc); |
| const char* source_file = method->GetDeclaringClassSourceFile(); |
| result += StringPrintf(" at %s (%s:%d)\n", method->PrettyMethod(true).c_str(), |
| source_file, line_number); |
| } |
| } |
| } else { |
| ObjPtr<Object> stack_trace = GetStackTrace(); |
| if (stack_trace != nullptr && stack_trace->IsObjectArray()) { |
| CHECK_EQ(stack_trace->GetClass()->GetComponentType(), |
| StackTraceElement::GetStackTraceElement()); |
| ObjPtr<ObjectArray<StackTraceElement>> ste_array = |
| ObjPtr<ObjectArray<StackTraceElement>>::DownCast(stack_trace); |
| if (ste_array->GetLength() == 0) { |
| result += "(Throwable with empty stack trace)\n"; |
| } else { |
| for (int32_t i = 0; i < ste_array->GetLength(); ++i) { |
| StackTraceElement* ste = ste_array->Get(i); |
| DCHECK(ste != nullptr); |
| auto* method_name = ste->GetMethodName(); |
| auto* file_name = ste->GetFileName(); |
| result += StringPrintf( |
| " at %s (%s:%d)\n", |
| method_name != nullptr ? method_name->ToModifiedUtf8().c_str() : "<unknown method>", |
| file_name != nullptr ? file_name->ToModifiedUtf8().c_str() : "(Unknown Source)", |
| ste->GetLineNumber()); |
| } |
| } |
| } else { |
| result += "(Throwable with no stack trace)\n"; |
| } |
| } |
| ObjPtr<Throwable> cause = GetFieldObject<Throwable>(OFFSET_OF_OBJECT_MEMBER(Throwable, cause_)); |
| if (cause != nullptr && cause != this) { // Constructor makes cause == this by default. |
| result += "Caused by: "; |
| result += cause->Dump(); |
| } |
| return result; |
| } |
| |
| void Throwable::SetClass(ObjPtr<Class> java_lang_Throwable) { |
| CHECK(java_lang_Throwable_.IsNull()); |
| CHECK(java_lang_Throwable != nullptr); |
| java_lang_Throwable_ = GcRoot<Class>(java_lang_Throwable); |
| } |
| |
| void Throwable::ResetClass() { |
| CHECK(!java_lang_Throwable_.IsNull()); |
| java_lang_Throwable_ = GcRoot<Class>(nullptr); |
| } |
| |
| void Throwable::VisitRoots(RootVisitor* visitor) { |
| java_lang_Throwable_.VisitRootIfNonNull(visitor, RootInfo(kRootStickyClass)); |
| } |
| |
| Object* Throwable::GetStackState() { |
| return GetFieldObjectVolatile<Object>(OFFSET_OF_OBJECT_MEMBER(Throwable, backtrace_)); |
| } |
| |
| Object* Throwable::GetStackTrace() { |
| return GetFieldObjectVolatile<Object>(OFFSET_OF_OBJECT_MEMBER(Throwable, backtrace_)); |
| } |
| |
| String* Throwable::GetDetailMessage() { |
| return GetFieldObject<String>(OFFSET_OF_OBJECT_MEMBER(Throwable, detail_message_)); |
| } |
| |
| } // namespace mirror |
| } // namespace art |