1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 #include <stdlib.h> 29 30 #include "src/v8.h" 31 32 #include "test/cctest/cctest.h" 33 34 using namespace v8::internal; 35 36 37 class HandleArray : public Malloced { 38 public: 39 static const unsigned kArraySize = 200; 40 HandleArray() {} 41 ~HandleArray() { Reset(); } 42 void Reset() { 43 for (unsigned i = 0; i < kArraySize; i++) { 44 if (handles_[i].IsEmpty()) continue; 45 handles_[i].Reset(); 46 } 47 } 48 v8::Persistent<v8::Value> handles_[kArraySize]; 49 private: 50 DISALLOW_COPY_AND_ASSIGN(HandleArray); 51 }; 52 53 54 // An aligned character array of size 1024. 55 class AlignedArray : public Malloced { 56 public: 57 static const unsigned kArraySize = 1024/sizeof(uint64_t); 58 AlignedArray() { Reset(); } 59 60 void Reset() { 61 for (unsigned i = 0; i < kArraySize; i++) { 62 data_[i] = 0; 63 } 64 } 65 66 template<typename T> 67 T As() { return reinterpret_cast<T>(data_); } 68 69 private: 70 uint64_t data_[kArraySize]; 71 DISALLOW_COPY_AND_ASSIGN(AlignedArray); 72 }; 73 74 75 class DescriptorTestHelper { 76 public: 77 DescriptorTestHelper() : 78 isolate_(NULL), array_(new AlignedArray), handle_array_(new HandleArray) { 79 v8::V8::Initialize(); 80 isolate_ = CcTest::isolate(); 81 } 82 v8::Isolate* isolate_; 83 // Data objects. 84 SmartPointer<AlignedArray> array_; 85 SmartPointer<HandleArray> handle_array_; 86 private: 87 DISALLOW_COPY_AND_ASSIGN(DescriptorTestHelper); 88 }; 89 90 91 static v8::Local<v8::ObjectTemplate> CreateConstructor( 92 v8::Handle<v8::Context> context, 93 const char* class_name, 94 int internal_field, 95 const char* descriptor_name = NULL, 96 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor = 97 v8::Handle<v8::DeclaredAccessorDescriptor>()) { 98 v8::Local<v8::FunctionTemplate> constructor = 99 v8::FunctionTemplate::New(context->GetIsolate()); 100 v8::Local<v8::ObjectTemplate> obj_template = constructor->InstanceTemplate(); 101 // Setup object template. 102 if (descriptor_name != NULL && !descriptor.IsEmpty()) { 103 bool added_accessor = 104 obj_template->SetDeclaredAccessor(v8_str(descriptor_name), descriptor); 105 CHECK(added_accessor); 106 } 107 obj_template->SetInternalFieldCount((internal_field+1)*2 + 7); 108 context->Global()->Set(v8_str(class_name), constructor->GetFunction()); 109 return obj_template; 110 } 111 112 113 static void VerifyRead(v8::Handle<v8::DeclaredAccessorDescriptor> descriptor, 114 int internal_field, 115 void* internal_object, 116 v8::Handle<v8::Value> expected_value) { 117 LocalContext local_context; 118 v8::HandleScope scope(local_context->GetIsolate()); 119 v8::Handle<v8::Context> context = local_context.local(); 120 CreateConstructor(context, "Accessible", internal_field, "x", descriptor); 121 // Setup object. 122 CompileRun("var accessible = new Accessible();"); 123 v8::Local<v8::Object> obj = v8::Local<v8::Object>::Cast( 124 context->Global()->Get(v8_str("accessible"))); 125 obj->SetAlignedPointerInInternalField(internal_field, internal_object); 126 bool added_accessor; 127 added_accessor = obj->SetDeclaredAccessor(v8_str("y"), descriptor); 128 CHECK(added_accessor); 129 added_accessor = obj->SetDeclaredAccessor(v8_str("13"), descriptor); 130 CHECK(added_accessor); 131 // Test access from template getter. 132 v8::Local<v8::Value> value; 133 value = CompileRun("accessible.x;"); 134 CHECK_EQ(expected_value, value); 135 value = CompileRun("accessible['x'];"); 136 CHECK_EQ(expected_value, value); 137 // Test access from object getter. 138 value = CompileRun("accessible.y;"); 139 CHECK_EQ(expected_value, value); 140 value = CompileRun("accessible['y'];"); 141 CHECK_EQ(expected_value, value); 142 value = CompileRun("accessible[13];"); 143 CHECK_EQ(expected_value, value); 144 value = CompileRun("accessible['13'];"); 145 CHECK_EQ(expected_value, value); 146 } 147 148 149 static v8::Handle<v8::Value> Convert(int32_t value, v8::Isolate* isolate) { 150 return v8::Integer::New(isolate, value); 151 } 152 153 154 static v8::Handle<v8::Value> Convert(float value, v8::Isolate* isolate) { 155 return v8::Number::New(isolate, value); 156 } 157 158 159 static v8::Handle<v8::Value> Convert(double value, v8::Isolate* isolate) { 160 return v8::Number::New(isolate, value); 161 } 162 163 164 typedef v8::ObjectOperationDescriptor OOD; 165 166 template<typename T> 167 static void TestPrimitiveValue( 168 T value, 169 v8::DeclaredAccessorDescriptorDataType data_type, 170 DescriptorTestHelper* helper) { 171 v8::HandleScope handle_scope(helper->isolate_); 172 int index = 17; 173 int internal_field = 6; 174 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor = 175 OOD::NewInternalFieldDereference(helper->isolate_, internal_field) 176 ->NewRawShift(helper->isolate_, static_cast<uint16_t>(index*sizeof(T))) 177 ->NewPrimitiveValue(helper->isolate_, data_type, 0); 178 v8::Handle<v8::Value> expected = Convert(value, helper->isolate_); 179 helper->array_->Reset(); 180 helper->array_->As<T*>()[index] = value; 181 VerifyRead(descriptor, internal_field, helper->array_.get(), expected); 182 } 183 184 185 TEST(PrimitiveValueRead) { 186 DescriptorTestHelper helper; 187 TestPrimitiveValue<int32_t>(203, v8::kDescriptorInt32Type, &helper); 188 TestPrimitiveValue<float>(23.7f, v8::kDescriptorFloatType, &helper); 189 TestPrimitiveValue<double>(23.7, v8::kDescriptorDoubleType, &helper); 190 } 191 192 193 template<typename T> 194 static void TestBitmaskCompare(T bitmask, 195 T compare_value, 196 DescriptorTestHelper* helper) { 197 v8::HandleScope handle_scope(helper->isolate_); 198 int index = 13; 199 int internal_field = 4; 200 v8::Handle<v8::RawOperationDescriptor> raw_descriptor = 201 OOD::NewInternalFieldDereference(helper->isolate_, internal_field) 202 ->NewRawShift(helper->isolate_, static_cast<uint16_t>(index*sizeof(T))); 203 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor; 204 switch (sizeof(T)) { 205 case 1: 206 descriptor = raw_descriptor->NewBitmaskCompare8( 207 helper->isolate_, 208 static_cast<uint8_t>(bitmask), 209 static_cast<uint8_t>(compare_value)); 210 break; 211 case 2: 212 descriptor = raw_descriptor->NewBitmaskCompare16( 213 helper->isolate_, 214 static_cast<uint16_t>(bitmask), 215 static_cast<uint16_t>(compare_value)); 216 break; 217 case 4: 218 descriptor = raw_descriptor->NewBitmaskCompare32( 219 helper->isolate_, 220 static_cast<uint32_t>(bitmask), 221 static_cast<uint32_t>(compare_value)); 222 break; 223 default: 224 CHECK(false); 225 break; 226 } 227 AlignedArray* array = helper->array_.get(); 228 array->Reset(); 229 VerifyRead(descriptor, internal_field, array, v8::False(helper->isolate_)); 230 array->As<T*>()[index] = compare_value; 231 VerifyRead(descriptor, internal_field, array, v8::True(helper->isolate_)); 232 helper->array_->As<T*>()[index] = compare_value & bitmask; 233 VerifyRead(descriptor, internal_field, array, v8::True(helper->isolate_)); 234 } 235 236 237 TEST(BitmaskCompareRead) { 238 DescriptorTestHelper helper; 239 TestBitmaskCompare<uint8_t>(0xf3, 0xa8, &helper); 240 TestBitmaskCompare<uint16_t>(0xfefe, 0x7d42, &helper); 241 TestBitmaskCompare<uint32_t>(0xfefeab18, 0x1234fdec, &helper); 242 } 243 244 245 TEST(PointerCompareRead) { 246 DescriptorTestHelper helper; 247 v8::HandleScope handle_scope(helper.isolate_); 248 int index = 35; 249 int internal_field = 3; 250 void* ptr = helper.isolate_; 251 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor = 252 OOD::NewInternalFieldDereference(helper.isolate_, internal_field) 253 ->NewRawShift(helper.isolate_, static_cast<uint16_t>(index*sizeof(ptr))) 254 ->NewPointerCompare(helper.isolate_, ptr); 255 AlignedArray* array = helper.array_.get(); 256 VerifyRead(descriptor, internal_field, array, v8::False(helper.isolate_)); 257 array->As<uintptr_t*>()[index] = reinterpret_cast<uintptr_t>(ptr); 258 VerifyRead(descriptor, internal_field, array, v8::True(helper.isolate_)); 259 } 260 261 262 TEST(PointerDereferenceRead) { 263 DescriptorTestHelper helper; 264 v8::HandleScope handle_scope(helper.isolate_); 265 int first_index = 13; 266 int internal_field = 7; 267 int second_index = 11; 268 int pointed_to_index = 75; 269 uint16_t expected = 0x1425; 270 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor = 271 OOD::NewInternalFieldDereference(helper.isolate_, internal_field) 272 ->NewRawShift(helper.isolate_, first_index*kPointerSize) 273 ->NewRawDereference(helper.isolate_) 274 ->NewRawShift(helper.isolate_, 275 static_cast<uint16_t>(second_index*sizeof(int16_t))) 276 ->NewPrimitiveValue(helper.isolate_, v8::kDescriptorInt16Type, 0); 277 AlignedArray* array = helper.array_.get(); 278 array->As<uintptr_t**>()[first_index] = 279 &array->As<uintptr_t*>()[pointed_to_index]; 280 VerifyRead(descriptor, internal_field, array, 281 v8::Integer::New(helper.isolate_, 0)); 282 second_index += pointed_to_index*sizeof(uintptr_t)/sizeof(uint16_t); 283 array->As<uint16_t*>()[second_index] = expected; 284 VerifyRead(descriptor, internal_field, array, 285 v8::Integer::New(helper.isolate_, expected)); 286 } 287 288 289 TEST(HandleDereferenceRead) { 290 DescriptorTestHelper helper; 291 v8::HandleScope handle_scope(helper.isolate_); 292 int index = 13; 293 int internal_field = 0; 294 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor = 295 OOD::NewInternalFieldDereference(helper.isolate_, internal_field) 296 ->NewRawShift(helper.isolate_, index*kPointerSize) 297 ->NewHandleDereference(helper.isolate_); 298 HandleArray* array = helper.handle_array_.get(); 299 v8::Handle<v8::String> expected = v8_str("whatever"); 300 array->handles_[index].Reset(helper.isolate_, expected); 301 VerifyRead(descriptor, internal_field, array, expected); 302 } 303
