exception_test.cc revision 4f6ad8ab428038129b2d0d6c40b7fd625cca15e1
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 "mirror/class-inl.h" 22#include "mirror/object_array-inl.h" 23#include "mirror/object-inl.h" 24#include "mirror/stack_trace_element.h" 25#include "runtime.h" 26#include "scoped_thread_state_change.h" 27#include "sirt_ref.h" 28#include "thread.h" 29#include "UniquePtr.h" 30 31namespace art { 32 33class ExceptionTest : public CommonTest { 34 protected: 35 virtual void SetUp() { 36 CommonTest::SetUp(); 37 38 ScopedObjectAccess soa(Thread::Current()); 39 SirtRef<mirror::ClassLoader> class_loader(soa.Self(), 40 soa.Decode<mirror::ClassLoader*>(LoadDex("ExceptionHandle"))); 41 my_klass_ = class_linker_->FindClass("LExceptionHandle;", class_loader.get()); 42 ASSERT_TRUE(my_klass_ != NULL); 43 class_linker_->EnsureInitialized(my_klass_, false, true); 44 45 dex_ = my_klass_->GetDexCache()->GetDexFile(); 46 47 uint32_t code_size = 12; 48 fake_code_.push_back((code_size >> 24) & 0xFF); 49 fake_code_.push_back((code_size >> 16) & 0xFF); 50 fake_code_.push_back((code_size >> 8) & 0xFF); 51 fake_code_.push_back((code_size >> 0) & 0xFF); 52 for (size_t i = 0 ; i < code_size; i++) { 53 fake_code_.push_back(0x70 | i); 54 } 55 56 fake_mapping_data_.push_back(4); // first element is count 57 fake_mapping_data_.push_back(4); // total (non-length) elements 58 fake_mapping_data_.push_back(2); // count of pc to dex elements 59 // --- pc to dex table 60 fake_mapping_data_.push_back(3); // offset 3 61 fake_mapping_data_.push_back(3); // maps to dex offset 3 62 // --- dex to pc table 63 fake_mapping_data_.push_back(3); // offset 3 64 fake_mapping_data_.push_back(3); // maps to dex offset 3 65 66 fake_vmap_table_data_.push_back(0); 67 68 fake_gc_map_.push_back(0); // 0 bytes to encode references and native pc offsets. 69 fake_gc_map_.push_back(0); 70 fake_gc_map_.push_back(0); // 0 entries. 71 fake_gc_map_.push_back(0); 72 73 method_f_ = my_klass_->FindVirtualMethod("f", "()I"); 74 ASSERT_TRUE(method_f_ != NULL); 75 method_f_->SetFrameSizeInBytes(kStackAlignment); 76 method_f_->SetCode(CompiledMethod::CodePointer(&fake_code_[sizeof(code_size)], kThumb2)); 77 method_f_->SetMappingTable(&fake_mapping_data_[0]); 78 method_f_->SetVmapTable(&fake_vmap_table_data_[0]); 79 method_f_->SetNativeGcMap(&fake_gc_map_[0]); 80 81 method_g_ = my_klass_->FindVirtualMethod("g", "(I)V"); 82 ASSERT_TRUE(method_g_ != NULL); 83 method_g_->SetFrameSizeInBytes(kStackAlignment); 84 method_g_->SetCode(CompiledMethod::CodePointer(&fake_code_[sizeof(code_size)], kThumb2)); 85 method_g_->SetMappingTable(&fake_mapping_data_[0]); 86 method_g_->SetVmapTable(&fake_vmap_table_data_[0]); 87 method_g_->SetNativeGcMap(&fake_gc_map_[0]); 88 } 89 90 const DexFile* dex_; 91 92 std::vector<uint8_t> fake_code_; 93 std::vector<uint32_t> fake_mapping_data_; 94 std::vector<uint16_t> fake_vmap_table_data_; 95 std::vector<uint8_t> fake_gc_map_; 96 97 mirror::AbstractMethod* method_f_; 98 mirror::AbstractMethod* method_g_; 99 100 private: 101 mirror::Class* my_klass_; 102}; 103 104TEST_F(ExceptionTest, FindCatchHandler) { 105 const DexFile::CodeItem* code_item = dex_->GetCodeItem(method_f_->GetCodeItemOffset()); 106 107 ASSERT_TRUE(code_item != NULL); 108 109 ASSERT_EQ(2u, code_item->tries_size_); 110 ASSERT_NE(0u, code_item->insns_size_in_code_units_); 111 112 const DexFile::TryItem *t0, *t1; 113 t0 = dex_->GetTryItems(*code_item, 0); 114 t1 = dex_->GetTryItems(*code_item, 1); 115 EXPECT_LE(t0->start_addr_, t1->start_addr_); 116 { 117 CatchHandlerIterator iter(*code_item, 4 /* Dex PC in the first try block */); 118 EXPECT_STREQ("Ljava/io/IOException;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex())); 119 ASSERT_TRUE(iter.HasNext()); 120 iter.Next(); 121 EXPECT_STREQ("Ljava/lang/Exception;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex())); 122 ASSERT_TRUE(iter.HasNext()); 123 iter.Next(); 124 EXPECT_FALSE(iter.HasNext()); 125 } 126 { 127 CatchHandlerIterator iter(*code_item, 8 /* Dex PC in the second try block */); 128 EXPECT_STREQ("Ljava/io/IOException;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex())); 129 ASSERT_TRUE(iter.HasNext()); 130 iter.Next(); 131 EXPECT_FALSE(iter.HasNext()); 132 } 133 { 134 CatchHandlerIterator iter(*code_item, 11 /* Dex PC not in any try block */); 135 EXPECT_FALSE(iter.HasNext()); 136 } 137} 138 139TEST_F(ExceptionTest, StackTraceElement) { 140 Thread* thread = Thread::Current(); 141 thread->TransitionFromSuspendedToRunnable(); 142 bool started = runtime_->Start(); 143 CHECK(started); 144 JNIEnv* env = thread->GetJniEnv(); 145 ScopedObjectAccess soa(env); 146 147 std::vector<uintptr_t> fake_stack; 148 ASSERT_EQ(kStackAlignment, 16); 149 ASSERT_EQ(sizeof(uintptr_t), sizeof(uint32_t)); 150 151#if !defined(ART_USE_PORTABLE_COMPILER) 152 // Create two fake stack frames with mapping data created in SetUp. We map offset 3 in the code 153 // to dex pc 3. 154 const uint32_t dex_pc = 3; 155 156 // Create/push fake 16byte stack frame for method g 157 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_g_)); 158 fake_stack.push_back(0); 159 fake_stack.push_back(0); 160 fake_stack.push_back(method_f_->ToNativePc(dex_pc)); // return pc 161 162 // Create/push fake 16byte stack frame for method f 163 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_f_)); 164 fake_stack.push_back(0); 165 fake_stack.push_back(0); 166 fake_stack.push_back(0xEBAD6070); // return pc 167 168 // Pull Method* of NULL to terminate the trace 169 fake_stack.push_back(0); 170 171 // Push null values which will become null incoming arguments. 172 fake_stack.push_back(0); 173 fake_stack.push_back(0); 174 fake_stack.push_back(0); 175 176 // Set up thread to appear as if we called out of method_g_ at pc dex 3 177 thread->SetTopOfStack(&fake_stack[0], method_g_->ToNativePc(dex_pc)); // return pc 178#else 179 // Create/push fake 20-byte shadow frame for method g 180 fake_stack.push_back(0); 181 fake_stack.push_back(0); 182 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_g_)); 183 fake_stack.push_back(3); 184 fake_stack.push_back(0); 185 186 // Create/push fake 20-byte shadow frame for method f 187 fake_stack.push_back(0); 188 fake_stack.push_back(0); 189 fake_stack.push_back(reinterpret_cast<uintptr_t>(method_f_)); 190 fake_stack.push_back(3); 191 fake_stack.push_back(0); 192 193 thread->PushShadowFrame(reinterpret_cast<ShadowFrame*>(&fake_stack[5])); 194 thread->PushShadowFrame(reinterpret_cast<ShadowFrame*>(&fake_stack[0])); 195#endif 196 197 jobject internal = thread->CreateInternalStackTrace(soa); 198 ASSERT_TRUE(internal != NULL); 199 jobjectArray ste_array = Thread::InternalStackTraceToStackTraceElementArray(env, internal); 200 ASSERT_TRUE(ste_array != NULL); 201 mirror::ObjectArray<mirror::StackTraceElement>* trace_array = 202 soa.Decode<mirror::ObjectArray<mirror::StackTraceElement>*>(ste_array); 203 204 ASSERT_TRUE(trace_array != NULL); 205 ASSERT_TRUE(trace_array->Get(0) != NULL); 206 EXPECT_STREQ("ExceptionHandle", 207 trace_array->Get(0)->GetDeclaringClass()->ToModifiedUtf8().c_str()); 208 EXPECT_STREQ("ExceptionHandle.java", trace_array->Get(0)->GetFileName()->ToModifiedUtf8().c_str()); 209 EXPECT_STREQ("g", trace_array->Get(0)->GetMethodName()->ToModifiedUtf8().c_str()); 210 EXPECT_EQ(37, trace_array->Get(0)->GetLineNumber()); 211 212 ASSERT_TRUE(trace_array->Get(1) != NULL); 213 EXPECT_STREQ("ExceptionHandle", 214 trace_array->Get(1)->GetDeclaringClass()->ToModifiedUtf8().c_str()); 215 EXPECT_STREQ("ExceptionHandle.java", trace_array->Get(1)->GetFileName()->ToModifiedUtf8().c_str()); 216 EXPECT_STREQ("f", trace_array->Get(1)->GetMethodName()->ToModifiedUtf8().c_str()); 217 EXPECT_EQ(22, trace_array->Get(1)->GetLineNumber()); 218 219#if !defined(ART_USE_PORTABLE_COMPILER) 220 thread->SetTopOfStack(NULL, 0); // Disarm the assertion that no code is running when we detach. 221#else 222 thread->PopShadowFrame(); 223 thread->PopShadowFrame(); 224#endif 225} 226 227} // namespace art 228