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 "v8.h" 31 32 #include "cctest.h" 33 34 using namespace v8::internal; 35 36 37 class HandleArray : public Malloced { 38 public: 39 static const unsigned kArraySize = 200; 40 explicit 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 = v8::FunctionTemplate::New(); 99 v8::Local<v8::ObjectTemplate> obj_template = constructor->InstanceTemplate(); 100 // Setup object template. 101 if (descriptor_name != NULL && !descriptor.IsEmpty()) { 102 bool added_accessor = 103 obj_template->SetDeclaredAccessor(v8_str(descriptor_name), descriptor); 104 CHECK(added_accessor); 105 } 106 obj_template->SetInternalFieldCount((internal_field+1)*2 + 7); 107 context->Global()->Set(v8_str(class_name), constructor->GetFunction()); 108 return obj_template; 109 } 110 111 112 static void VerifyRead(v8::Handle<v8::DeclaredAccessorDescriptor> descriptor, 113 int internal_field, 114 void* internal_object, 115 v8::Handle<v8::Value> expected_value) { 116 LocalContext local_context; 117 v8::HandleScope scope(local_context->GetIsolate()); 118 v8::Handle<v8::Context> context = local_context.local(); 119 CreateConstructor(context, "Accessible", internal_field, "x", descriptor); 120 // Setup object. 121 CompileRun("var accessible = new Accessible();"); 122 v8::Local<v8::Object> obj = v8::Local<v8::Object>::Cast( 123 context->Global()->Get(v8_str("accessible"))); 124 obj->SetAlignedPointerInInternalField(internal_field, internal_object); 125 bool added_accessor; 126 added_accessor = obj->SetDeclaredAccessor(v8_str("y"), descriptor); 127 CHECK(added_accessor); 128 added_accessor = obj->SetDeclaredAccessor(v8_str("13"), descriptor); 129 CHECK(added_accessor); 130 // Test access from template getter. 131 v8::Local<v8::Value> value; 132 value = CompileRun("accessible.x;"); 133 CHECK_EQ(expected_value, value); 134 value = CompileRun("accessible['x'];"); 135 CHECK_EQ(expected_value, value); 136 // Test access from object getter. 137 value = CompileRun("accessible.y;"); 138 CHECK_EQ(expected_value, value); 139 value = CompileRun("accessible['y'];"); 140 CHECK_EQ(expected_value, value); 141 value = CompileRun("accessible[13];"); 142 CHECK_EQ(expected_value, value); 143 value = CompileRun("accessible['13'];"); 144 CHECK_EQ(expected_value, value); 145 } 146 147 148 static v8::Handle<v8::Value> Convert(int32_t value, v8::Isolate* isolate) { 149 return v8::Integer::New(value, isolate); 150 } 151 152 153 static v8::Handle<v8::Value> Convert(float value, v8::Isolate*) { 154 return v8::Number::New(value); 155 } 156 157 158 static v8::Handle<v8::Value> Convert(double value, v8::Isolate*) { 159 return v8::Number::New(value); 160 } 161 162 163 typedef v8::ObjectOperationDescriptor OOD; 164 165 template<typename T> 166 static void TestPrimitiveValue( 167 T value, 168 v8::DeclaredAccessorDescriptorDataType data_type, 169 DescriptorTestHelper* helper) { 170 v8::HandleScope handle_scope(helper->isolate_); 171 int index = 17; 172 int internal_field = 6; 173 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor = 174 OOD::NewInternalFieldDereference(helper->isolate_, internal_field) 175 ->NewRawShift(helper->isolate_, static_cast<uint16_t>(index*sizeof(T))) 176 ->NewPrimitiveValue(helper->isolate_, data_type, 0); 177 v8::Handle<v8::Value> expected = Convert(value, helper->isolate_); 178 helper->array_->Reset(); 179 helper->array_->As<T*>()[index] = value; 180 VerifyRead(descriptor, internal_field, *helper->array_, expected); 181 } 182 183 184 TEST(PrimitiveValueRead) { 185 DescriptorTestHelper helper; 186 TestPrimitiveValue<int32_t>(203, v8::kDescriptorInt32Type, &helper); 187 TestPrimitiveValue<float>(23.7f, v8::kDescriptorFloatType, &helper); 188 TestPrimitiveValue<double>(23.7, v8::kDescriptorDoubleType, &helper); 189 } 190 191 192 template<typename T> 193 static void TestBitmaskCompare(T bitmask, 194 T compare_value, 195 DescriptorTestHelper* helper) { 196 v8::HandleScope handle_scope(helper->isolate_); 197 int index = 13; 198 int internal_field = 4; 199 v8::Handle<v8::RawOperationDescriptor> raw_descriptor = 200 OOD::NewInternalFieldDereference(helper->isolate_, internal_field) 201 ->NewRawShift(helper->isolate_, static_cast<uint16_t>(index*sizeof(T))); 202 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor; 203 switch (sizeof(T)) { 204 case 1: 205 descriptor = raw_descriptor->NewBitmaskCompare8( 206 helper->isolate_, 207 static_cast<uint8_t>(bitmask), 208 static_cast<uint8_t>(compare_value)); 209 break; 210 case 2: 211 descriptor = raw_descriptor->NewBitmaskCompare16( 212 helper->isolate_, 213 static_cast<uint16_t>(bitmask), 214 static_cast<uint16_t>(compare_value)); 215 break; 216 case 4: 217 descriptor = raw_descriptor->NewBitmaskCompare32( 218 helper->isolate_, 219 static_cast<uint32_t>(bitmask), 220 static_cast<uint32_t>(compare_value)); 221 break; 222 default: 223 CHECK(false); 224 break; 225 } 226 AlignedArray* array = *helper->array_; 227 array->Reset(); 228 VerifyRead(descriptor, internal_field, array, v8::False(helper->isolate_)); 229 array->As<T*>()[index] = compare_value; 230 VerifyRead(descriptor, internal_field, array, v8::True(helper->isolate_)); 231 helper->array_->As<T*>()[index] = compare_value & bitmask; 232 VerifyRead(descriptor, internal_field, array, v8::True(helper->isolate_)); 233 } 234 235 236 TEST(BitmaskCompareRead) { 237 DescriptorTestHelper helper; 238 TestBitmaskCompare<uint8_t>(0xf3, 0xa8, &helper); 239 TestBitmaskCompare<uint16_t>(0xfefe, 0x7d42, &helper); 240 TestBitmaskCompare<uint32_t>(0xfefeab18, 0x1234fdec, &helper); 241 } 242 243 244 TEST(PointerCompareRead) { 245 DescriptorTestHelper helper; 246 v8::HandleScope handle_scope(helper.isolate_); 247 int index = 35; 248 int internal_field = 3; 249 void* ptr = helper.isolate_; 250 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor = 251 OOD::NewInternalFieldDereference(helper.isolate_, internal_field) 252 ->NewRawShift(helper.isolate_, static_cast<uint16_t>(index*sizeof(ptr))) 253 ->NewPointerCompare(helper.isolate_, ptr); 254 AlignedArray* array = *helper.array_; 255 VerifyRead(descriptor, internal_field, array, v8::False(helper.isolate_)); 256 array->As<uintptr_t*>()[index] = reinterpret_cast<uintptr_t>(ptr); 257 VerifyRead(descriptor, internal_field, array, v8::True(helper.isolate_)); 258 } 259 260 261 TEST(PointerDereferenceRead) { 262 DescriptorTestHelper helper; 263 v8::HandleScope handle_scope(helper.isolate_); 264 int first_index = 13; 265 int internal_field = 7; 266 int second_index = 11; 267 int pointed_to_index = 75; 268 uint16_t expected = 0x1425; 269 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor = 270 OOD::NewInternalFieldDereference(helper.isolate_, internal_field) 271 ->NewRawShift(helper.isolate_, first_index*kPointerSize) 272 ->NewRawDereference(helper.isolate_) 273 ->NewRawShift(helper.isolate_, 274 static_cast<uint16_t>(second_index*sizeof(int16_t))) 275 ->NewPrimitiveValue(helper.isolate_, v8::kDescriptorInt16Type, 0); 276 AlignedArray* array = *helper.array_; 277 array->As<uintptr_t**>()[first_index] = 278 &array->As<uintptr_t*>()[pointed_to_index]; 279 VerifyRead(descriptor, internal_field, array, v8::Integer::New(0)); 280 second_index += pointed_to_index*sizeof(uintptr_t)/sizeof(uint16_t); 281 array->As<uint16_t*>()[second_index] = expected; 282 VerifyRead(descriptor, internal_field, array, v8::Integer::New(expected)); 283 } 284 285 286 TEST(HandleDereferenceRead) { 287 DescriptorTestHelper helper; 288 v8::HandleScope handle_scope(helper.isolate_); 289 int index = 13; 290 int internal_field = 0; 291 v8::Handle<v8::DeclaredAccessorDescriptor> descriptor = 292 OOD::NewInternalFieldDereference(helper.isolate_, internal_field) 293 ->NewRawShift(helper.isolate_, index*kPointerSize) 294 ->NewHandleDereference(helper.isolate_); 295 HandleArray* array = *helper.handle_array_; 296 v8::Handle<v8::String> expected = v8_str("whatever"); 297 array->handles_[index].Reset(helper.isolate_, expected); 298 VerifyRead(descriptor, internal_field, array, expected); 299 } 300
