exception_test.cc revision 9837939678bb5dcba178e5fb00ed59b5d14c8d9b
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 "class_linker.h" 18#include "common_test.h" 19#include "dex_file.h" 20#include "gtest/gtest.h" 21#include "leb128_encoder.h" 22#include "mirror/class-inl.h" 23#include "mirror/object_array-inl.h" 24#include "mirror/object-inl.h" 25#include "mirror/stack_trace_element.h" 26#include "runtime.h" 27#include "scoped_thread_state_change.h" 28#include "sirt_ref.h" 29#include "thread.h" 30#include "UniquePtr.h" 31 32namespace art { 33 34class ExceptionTest : public CommonTest { 35 protected: 36 virtual void SetUp() { 37 CommonTest::SetUp(); 38 39 ScopedObjectAccess soa(Thread::Current()); 40 SirtRef<mirror::ClassLoader> class_loader( 41 soa.Self(), soa.Decode<mirror::ClassLoader*>(LoadDex("ExceptionHandle"))); 42 my_klass_ = class_linker_->FindClass(soa.Self(), "LExceptionHandle;", class_loader); 43 ASSERT_TRUE(my_klass_ != NULL); 44 SirtRef<mirror::Class> sirt_klass(soa.Self(), my_klass_); 45 class_linker_->EnsureInitialized(sirt_klass, true, true); 46 my_klass_ = sirt_klass.get(); 47 48 dex_ = my_klass_->GetDexCache()->GetDexFile(); 49 50 uint32_t code_size = 12; 51 fake_code_.push_back((code_size >> 24) & 0xFF); 52 fake_code_.push_back((code_size >> 16) & 0xFF); 53 fake_code_.push_back((code_size >> 8) & 0xFF); 54 fake_code_.push_back((code_size >> 0) & 0xFF); 55 for (size_t i = 0 ; i < code_size; i++) { 56 fake_code_.push_back(0x70 | i); 57 } 58 59 fake_mapping_data_.PushBackUnsigned(4); // first element is count 60 fake_mapping_data_.PushBackUnsigned(4); // total (non-length) elements 61 fake_mapping_data_.PushBackUnsigned(2); // count of pc to dex elements 62 // --- pc to dex table 63 fake_mapping_data_.PushBackUnsigned(3 - 0); // offset 3 64 fake_mapping_data_.PushBackSigned(3 - 0); // maps to dex offset 3 65 // --- dex to pc table 66 fake_mapping_data_.PushBackUnsigned(3 - 0); // offset 3 67 fake_mapping_data_.PushBackSigned(3 - 0); // maps to dex offset 3 68 69 fake_vmap_table_data_.PushBackUnsigned(0); 70 71 fake_gc_map_.push_back(0); // 0 bytes to encode references and native pc offsets. 72 fake_gc_map_.push_back(0); 73 fake_gc_map_.push_back(0); // 0 entries. 74 fake_gc_map_.push_back(0); 75 76 method_f_ = my_klass_->FindVirtualMethod("f", "()I"); 77 ASSERT_TRUE(method_f_ != NULL); 78 method_f_->SetFrameSizeInBytes(kStackAlignment); 79 method_f_->SetEntryPointFromQuickCompiledCode(CompiledMethod::CodePointer(&fake_code_[sizeof(code_size)], kThumb2)); 80 method_f_->SetMappingTable(&fake_mapping_data_.GetData()[0]); 81 method_f_->SetVmapTable(&fake_vmap_table_data_.GetData()[0]); 82 method_f_->SetNativeGcMap(&fake_gc_map_[0]); 83 84 method_g_ = my_klass_->FindVirtualMethod("g", "(I)V"); 85 ASSERT_TRUE(method_g_ != NULL); 86 method_g_->SetFrameSizeInBytes(kStackAlignment); 87 method_g_->SetEntryPointFromQuickCompiledCode(CompiledMethod::CodePointer(&fake_code_[sizeof(code_size)], kThumb2)); 88 method_g_->SetMappingTable(&fake_mapping_data_.GetData()[0]); 89 method_g_->SetVmapTable(&fake_vmap_table_data_.GetData()[0]); 90 method_g_->SetNativeGcMap(&fake_gc_map_[0]); 91 } 92 93 const DexFile* dex_; 94 95 std::vector<uint8_t> fake_code_; 96 Leb128EncodingVector fake_mapping_data_; 97 Leb128EncodingVector fake_vmap_table_data_; 98 std::vector<uint8_t> fake_gc_map_; 99 100 mirror::ArtMethod* method_f_; 101 mirror::ArtMethod* method_g_; 102 103 private: 104 mirror::Class* my_klass_; 105}; 106 107TEST_F(ExceptionTest, FindCatchHandler) { 108 ScopedObjectAccess soa(Thread::Current()); 109 const DexFile::CodeItem* code_item = dex_->GetCodeItem(method_f_->GetCodeItemOffset()); 110 111 ASSERT_TRUE(code_item != NULL); 112 113 ASSERT_EQ(2u, code_item->tries_size_); 114 ASSERT_NE(0u, code_item->insns_size_in_code_units_); 115 116 const DexFile::TryItem *t0, *t1; 117 t0 = dex_->GetTryItems(*code_item, 0); 118 t1 = dex_->GetTryItems(*code_item, 1); 119 EXPECT_LE(t0->start_addr_, t1->start_addr_); 120 { 121 CatchHandlerIterator iter(*code_item, 4 /* Dex PC in the first try block */); 122 EXPECT_STREQ("Ljava/io/IOException;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex())); 123 ASSERT_TRUE(iter.HasNext()); 124 iter.Next(); 125 EXPECT_STREQ("Ljava/lang/Exception;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex())); 126 ASSERT_TRUE(iter.HasNext()); 127 iter.Next(); 128 EXPECT_FALSE(iter.HasNext()); 129 } 130 { 131 CatchHandlerIterator iter(*code_item, 8 /* Dex PC in the second try block */); 132 EXPECT_STREQ("Ljava/io/IOException;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex())); 133 ASSERT_TRUE(iter.HasNext()); 134 iter.Next(); 135 EXPECT_FALSE(iter.HasNext()); 136 } 137 { 138 CatchHandlerIterator iter(*code_item, 11 /* Dex PC not in any try block */); 139 EXPECT_FALSE(iter.HasNext()); 140 } 141} 142 143TEST_F(ExceptionTest, StackTraceElement) { 144 Thread* thread = Thread::Current(); 145 thread->TransitionFromSuspendedToRunnable(); 146 bool started = runtime_->Start(); 147 CHECK(started); 148 JNIEnv* env = thread->GetJniEnv(); 149 ScopedObjectAccess soa(env); 150 151 std::vector<uintptr_t> fake_stack; 152 ASSERT_EQ(kStackAlignment, 16U); 153 ASSERT_EQ(sizeof(uintptr_t), sizeof(uint32_t)); 154 155 if (!kUsePortableCompiler) { 156 // Create two fake stack frames with mapping data created in SetUp. We map offset 3 in the code 157 // to dex pc 3. 158 const uint32_t dex_pc = 3; 159 160 // Create/push fake 16byte stack frame for method g 161 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_g_)); 162 fake_stack.push_back(0); 163 fake_stack.push_back(0); 164 fake_stack.push_back(method_f_->ToNativePc(dex_pc)); // return pc 165 166 // Create/push fake 16byte stack frame for method f 167 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_f_)); 168 fake_stack.push_back(0); 169 fake_stack.push_back(0); 170 fake_stack.push_back(0xEBAD6070); // return pc 171 172 // Pull Method* of NULL to terminate the trace 173 fake_stack.push_back(0); 174 175 // Push null values which will become null incoming arguments. 176 fake_stack.push_back(0); 177 fake_stack.push_back(0); 178 fake_stack.push_back(0); 179 180 // Set up thread to appear as if we called out of method_g_ at pc dex 3 181 thread->SetTopOfStack(&fake_stack[0], method_g_->ToNativePc(dex_pc)); // return pc 182 } else { 183 // Create/push fake 20-byte shadow frame for method g 184 fake_stack.push_back(0); 185 fake_stack.push_back(0); 186 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_g_)); 187 fake_stack.push_back(3); 188 fake_stack.push_back(0); 189 190 // Create/push fake 20-byte shadow frame for method f 191 fake_stack.push_back(0); 192 fake_stack.push_back(0); 193 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_f_)); 194 fake_stack.push_back(3); 195 fake_stack.push_back(0); 196 197 thread->PushShadowFrame(reinterpret_cast<ShadowFrame*>(&fake_stack[5])); 198 thread->PushShadowFrame(reinterpret_cast<ShadowFrame*>(&fake_stack[0])); 199 } 200 201 jobject internal = thread->CreateInternalStackTrace(soa); 202 ASSERT_TRUE(internal != NULL); 203 jobjectArray ste_array = Thread::InternalStackTraceToStackTraceElementArray(env, internal); 204 ASSERT_TRUE(ste_array != NULL); 205 mirror::ObjectArray<mirror::StackTraceElement>* trace_array = 206 soa.Decode<mirror::ObjectArray<mirror::StackTraceElement>*>(ste_array); 207 208 ASSERT_TRUE(trace_array != NULL); 209 ASSERT_TRUE(trace_array->Get(0) != NULL); 210 EXPECT_STREQ("ExceptionHandle", 211 trace_array->Get(0)->GetDeclaringClass()->ToModifiedUtf8().c_str()); 212 EXPECT_STREQ("ExceptionHandle.java", trace_array->Get(0)->GetFileName()->ToModifiedUtf8().c_str()); 213 EXPECT_STREQ("g", trace_array->Get(0)->GetMethodName()->ToModifiedUtf8().c_str()); 214 EXPECT_EQ(37, trace_array->Get(0)->GetLineNumber()); 215 216 ASSERT_TRUE(trace_array->Get(1) != NULL); 217 EXPECT_STREQ("ExceptionHandle", 218 trace_array->Get(1)->GetDeclaringClass()->ToModifiedUtf8().c_str()); 219 EXPECT_STREQ("ExceptionHandle.java", trace_array->Get(1)->GetFileName()->ToModifiedUtf8().c_str()); 220 EXPECT_STREQ("f", trace_array->Get(1)->GetMethodName()->ToModifiedUtf8().c_str()); 221 EXPECT_EQ(22, trace_array->Get(1)->GetLineNumber()); 222 223#if !defined(ART_USE_PORTABLE_COMPILER) 224 thread->SetTopOfStack(NULL, 0); // Disarm the assertion that no code is running when we detach. 225#else 226 thread->PopShadowFrame(); 227 thread->PopShadowFrame(); 228#endif 229} 230 231} // namespace art 232