Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 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 "v8.h" |
| 29 | |
| 30 | #include "accessors.h" |
| 31 | #include "api.h" |
| 32 | #include "bootstrapper.h" |
| 33 | #include "compiler.h" |
| 34 | #include "debug.h" |
| 35 | #include "execution.h" |
| 36 | #include "global-handles.h" |
| 37 | #include "macro-assembler.h" |
| 38 | #include "natives.h" |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 39 | #include "snapshot.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 40 | |
| 41 | namespace v8 { |
| 42 | namespace internal { |
| 43 | |
| 44 | // A SourceCodeCache uses a FixedArray to store pairs of |
| 45 | // (AsciiString*, JSFunction*), mapping names of native code files |
| 46 | // (runtime.js, etc.) to precompiled functions. Instead of mapping |
| 47 | // names to functions it might make sense to let the JS2C tool |
| 48 | // generate an index for each native JS file. |
| 49 | class SourceCodeCache BASE_EMBEDDED { |
| 50 | public: |
| 51 | explicit SourceCodeCache(Script::Type type): type_(type), cache_(NULL) { } |
| 52 | |
| 53 | void Initialize(bool create_heap_objects) { |
| 54 | cache_ = create_heap_objects ? Heap::empty_fixed_array() : NULL; |
| 55 | } |
| 56 | |
| 57 | void Iterate(ObjectVisitor* v) { |
| 58 | v->VisitPointer(bit_cast<Object**, FixedArray**>(&cache_)); |
| 59 | } |
| 60 | |
| 61 | |
| 62 | bool Lookup(Vector<const char> name, Handle<JSFunction>* handle) { |
| 63 | for (int i = 0; i < cache_->length(); i+=2) { |
| 64 | SeqAsciiString* str = SeqAsciiString::cast(cache_->get(i)); |
| 65 | if (str->IsEqualTo(name)) { |
| 66 | *handle = Handle<JSFunction>(JSFunction::cast(cache_->get(i + 1))); |
| 67 | return true; |
| 68 | } |
| 69 | } |
| 70 | return false; |
| 71 | } |
| 72 | |
| 73 | |
| 74 | void Add(Vector<const char> name, Handle<JSFunction> fun) { |
| 75 | ASSERT(fun->IsBoilerplate()); |
| 76 | HandleScope scope; |
| 77 | int length = cache_->length(); |
| 78 | Handle<FixedArray> new_array = |
| 79 | Factory::NewFixedArray(length + 2, TENURED); |
| 80 | cache_->CopyTo(0, *new_array, 0, cache_->length()); |
| 81 | cache_ = *new_array; |
| 82 | Handle<String> str = Factory::NewStringFromAscii(name, TENURED); |
| 83 | cache_->set(length, *str); |
| 84 | cache_->set(length + 1, *fun); |
| 85 | Script::cast(fun->shared()->script())->set_type(Smi::FromInt(type_)); |
| 86 | } |
| 87 | |
| 88 | private: |
| 89 | Script::Type type_; |
| 90 | FixedArray* cache_; |
| 91 | DISALLOW_COPY_AND_ASSIGN(SourceCodeCache); |
| 92 | }; |
| 93 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 94 | static SourceCodeCache extensions_cache(Script::TYPE_EXTENSION); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 95 | // This is for delete, not delete[]. |
| 96 | static List<char*>* delete_these_non_arrays_on_tear_down = NULL; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 97 | // This is for delete[] |
| 98 | static List<char*>* delete_these_arrays_on_tear_down = NULL; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 99 | |
| 100 | |
| 101 | NativesExternalStringResource::NativesExternalStringResource(const char* source) |
| 102 | : data_(source), length_(StrLength(source)) { |
| 103 | if (delete_these_non_arrays_on_tear_down == NULL) { |
| 104 | delete_these_non_arrays_on_tear_down = new List<char*>(2); |
| 105 | } |
| 106 | // The resources are small objects and we only make a fixed number of |
| 107 | // them, but let's clean them up on exit for neatness. |
| 108 | delete_these_non_arrays_on_tear_down-> |
| 109 | Add(reinterpret_cast<char*>(this)); |
| 110 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 111 | |
| 112 | |
| 113 | Handle<String> Bootstrapper::NativesSourceLookup(int index) { |
| 114 | ASSERT(0 <= index && index < Natives::GetBuiltinsCount()); |
| 115 | if (Heap::natives_source_cache()->get(index)->IsUndefined()) { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 116 | if (!Snapshot::IsEnabled() || FLAG_new_snapshot) { |
| 117 | // We can use external strings for the natives. |
| 118 | NativesExternalStringResource* resource = |
| 119 | new NativesExternalStringResource( |
| 120 | Natives::GetScriptSource(index).start()); |
| 121 | Handle<String> source_code = |
| 122 | Factory::NewExternalStringFromAscii(resource); |
| 123 | Heap::natives_source_cache()->set(index, *source_code); |
| 124 | } else { |
| 125 | // Old snapshot code can't cope with external strings at all. |
| 126 | Handle<String> source_code = |
| 127 | Factory::NewStringFromAscii(Natives::GetScriptSource(index)); |
| 128 | Heap::natives_source_cache()->set(index, *source_code); |
| 129 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 130 | } |
| 131 | Handle<Object> cached_source(Heap::natives_source_cache()->get(index)); |
| 132 | return Handle<String>::cast(cached_source); |
| 133 | } |
| 134 | |
| 135 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 136 | void Bootstrapper::Initialize(bool create_heap_objects) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 137 | extensions_cache.Initialize(create_heap_objects); |
| 138 | } |
| 139 | |
| 140 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 141 | char* Bootstrapper::AllocateAutoDeletedArray(int bytes) { |
| 142 | char* memory = new char[bytes]; |
| 143 | if (memory != NULL) { |
| 144 | if (delete_these_arrays_on_tear_down == NULL) { |
| 145 | delete_these_arrays_on_tear_down = new List<char*>(2); |
| 146 | } |
| 147 | delete_these_arrays_on_tear_down->Add(memory); |
| 148 | } |
| 149 | return memory; |
| 150 | } |
| 151 | |
| 152 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 153 | void Bootstrapper::TearDown() { |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 154 | if (delete_these_non_arrays_on_tear_down != NULL) { |
| 155 | int len = delete_these_non_arrays_on_tear_down->length(); |
| 156 | ASSERT(len < 20); // Don't use this mechanism for unbounded allocations. |
| 157 | for (int i = 0; i < len; i++) { |
| 158 | delete delete_these_non_arrays_on_tear_down->at(i); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 159 | delete_these_non_arrays_on_tear_down->at(i) = NULL; |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 160 | } |
| 161 | delete delete_these_non_arrays_on_tear_down; |
| 162 | delete_these_non_arrays_on_tear_down = NULL; |
| 163 | } |
| 164 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 165 | if (delete_these_arrays_on_tear_down != NULL) { |
| 166 | int len = delete_these_arrays_on_tear_down->length(); |
| 167 | ASSERT(len < 1000); // Don't use this mechanism for unbounded allocations. |
| 168 | for (int i = 0; i < len; i++) { |
| 169 | delete[] delete_these_arrays_on_tear_down->at(i); |
| 170 | delete_these_arrays_on_tear_down->at(i) = NULL; |
| 171 | } |
| 172 | delete delete_these_arrays_on_tear_down; |
| 173 | delete_these_arrays_on_tear_down = NULL; |
| 174 | } |
| 175 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 176 | extensions_cache.Initialize(false); // Yes, symmetrical |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 180 | class Genesis BASE_EMBEDDED { |
| 181 | public: |
| 182 | Genesis(Handle<Object> global_object, |
| 183 | v8::Handle<v8::ObjectTemplate> global_template, |
| 184 | v8::ExtensionConfiguration* extensions); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 185 | ~Genesis() { } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 186 | |
| 187 | Handle<Context> result() { return result_; } |
| 188 | |
| 189 | Genesis* previous() { return previous_; } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 190 | |
| 191 | private: |
| 192 | Handle<Context> global_context_; |
| 193 | |
| 194 | // There may be more than one active genesis object: When GC is |
| 195 | // triggered during environment creation there may be weak handle |
| 196 | // processing callbacks which may create new environments. |
| 197 | Genesis* previous_; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 198 | |
| 199 | Handle<Context> global_context() { return global_context_; } |
| 200 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 201 | // Creates some basic objects. Used for creating a context from scratch. |
| 202 | void CreateRoots(); |
| 203 | // Creates the empty function. Used for creating a context from scratch. |
| 204 | Handle<JSFunction> CreateEmptyFunction(); |
| 205 | // Creates the global objects using the global and the template passed in |
| 206 | // through the API. We call this regardless of whether we are building a |
| 207 | // context from scratch or using a deserialized one from the partial snapshot |
| 208 | // but in the latter case we don't use the objects it produces directly, as |
| 209 | // we have to used the deserialized ones that are linked together with the |
| 210 | // rest of the context snapshot. |
| 211 | Handle<JSGlobalProxy> CreateNewGlobals( |
| 212 | v8::Handle<v8::ObjectTemplate> global_template, |
| 213 | Handle<Object> global_object, |
| 214 | Handle<GlobalObject>* global_proxy_out); |
| 215 | // Hooks the given global proxy into the context. If the context was created |
| 216 | // by deserialization then this will unhook the global proxy that was |
| 217 | // deserialized, leaving the GC to pick it up. |
| 218 | void HookUpGlobalProxy(Handle<GlobalObject> inner_global, |
| 219 | Handle<JSGlobalProxy> global_proxy); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 220 | // Similarly, we want to use the inner global that has been created by the |
| 221 | // templates passed through the API. The inner global from the snapshot is |
| 222 | // detached from the other objects in the snapshot. |
| 223 | void HookUpInnerGlobal(Handle<GlobalObject> inner_global); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 224 | // New context initialization. Used for creating a context from scratch. |
| 225 | void InitializeGlobal(Handle<GlobalObject> inner_global, |
| 226 | Handle<JSFunction> empty_function); |
| 227 | // Installs the contents of the native .js files on the global objects. |
| 228 | // Used for creating a context from scratch. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 229 | void InstallNativeFunctions(); |
| 230 | bool InstallNatives(); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 231 | // Used both for deserialized and from-scratch contexts to add the extensions |
| 232 | // provided. |
| 233 | static bool InstallExtensions(Handle<Context> global_context, |
| 234 | v8::ExtensionConfiguration* extensions); |
| 235 | static bool InstallExtension(const char* name); |
| 236 | static bool InstallExtension(v8::RegisteredExtension* current); |
| 237 | static void InstallSpecialObjects(Handle<Context> global_context); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 238 | bool InstallJSBuiltins(Handle<JSBuiltinsObject> builtins); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 239 | bool ConfigureApiObject(Handle<JSObject> object, |
| 240 | Handle<ObjectTemplateInfo> object_template); |
| 241 | bool ConfigureGlobalObjects(v8::Handle<v8::ObjectTemplate> global_template); |
| 242 | |
| 243 | // Migrates all properties from the 'from' object to the 'to' |
| 244 | // object and overrides the prototype in 'to' with the one from |
| 245 | // 'from'. |
| 246 | void TransferObject(Handle<JSObject> from, Handle<JSObject> to); |
| 247 | void TransferNamedProperties(Handle<JSObject> from, Handle<JSObject> to); |
| 248 | void TransferIndexedProperties(Handle<JSObject> from, Handle<JSObject> to); |
| 249 | |
| 250 | Handle<DescriptorArray> ComputeFunctionInstanceDescriptor( |
| 251 | bool make_prototype_read_only, |
| 252 | bool make_prototype_enumerable = false); |
| 253 | void MakeFunctionInstancePrototypeWritable(); |
| 254 | |
| 255 | void AddSpecialFunction(Handle<JSObject> prototype, |
| 256 | const char* name, |
| 257 | Handle<Code> code); |
| 258 | |
| 259 | void BuildSpecialFunctionTable(); |
| 260 | |
| 261 | static bool CompileBuiltin(int index); |
| 262 | static bool CompileNative(Vector<const char> name, Handle<String> source); |
| 263 | static bool CompileScriptCached(Vector<const char> name, |
| 264 | Handle<String> source, |
| 265 | SourceCodeCache* cache, |
| 266 | v8::Extension* extension, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 267 | Handle<Context> top_context, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 268 | bool use_runtime_context); |
| 269 | |
| 270 | Handle<Context> result_; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 271 | Handle<JSFunction> empty_function_; |
| 272 | BootstrapperActive active_; |
| 273 | friend class Bootstrapper; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 274 | }; |
| 275 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 276 | |
| 277 | void Bootstrapper::Iterate(ObjectVisitor* v) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 278 | extensions_cache.Iterate(v); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 279 | v->Synchronize("Extensions"); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 283 | Handle<Context> Bootstrapper::CreateEnvironment( |
| 284 | Handle<Object> global_object, |
| 285 | v8::Handle<v8::ObjectTemplate> global_template, |
| 286 | v8::ExtensionConfiguration* extensions) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 287 | HandleScope scope; |
| 288 | Handle<Context> env; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 289 | Genesis genesis(global_object, global_template, extensions); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 290 | env = genesis.result(); |
| 291 | if (!env.is_null()) { |
| 292 | if (InstallExtensions(env, extensions)) { |
| 293 | return env; |
| 294 | } |
| 295 | } |
| 296 | return Handle<Context>(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | |
| 300 | static void SetObjectPrototype(Handle<JSObject> object, Handle<Object> proto) { |
| 301 | // object.__proto__ = proto; |
| 302 | Handle<Map> old_to_map = Handle<Map>(object->map()); |
| 303 | Handle<Map> new_to_map = Factory::CopyMapDropTransitions(old_to_map); |
| 304 | new_to_map->set_prototype(*proto); |
| 305 | object->set_map(*new_to_map); |
| 306 | } |
| 307 | |
| 308 | |
| 309 | void Bootstrapper::DetachGlobal(Handle<Context> env) { |
| 310 | JSGlobalProxy::cast(env->global_proxy())->set_context(*Factory::null_value()); |
| 311 | SetObjectPrototype(Handle<JSObject>(env->global_proxy()), |
| 312 | Factory::null_value()); |
| 313 | env->set_global_proxy(env->global()); |
| 314 | env->global()->set_global_receiver(env->global()); |
| 315 | } |
| 316 | |
| 317 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 318 | static Handle<JSFunction> InstallFunction(Handle<JSObject> target, |
| 319 | const char* name, |
| 320 | InstanceType type, |
| 321 | int instance_size, |
| 322 | Handle<JSObject> prototype, |
| 323 | Builtins::Name call, |
| 324 | bool is_ecma_native) { |
| 325 | Handle<String> symbol = Factory::LookupAsciiSymbol(name); |
| 326 | Handle<Code> call_code = Handle<Code>(Builtins::builtin(call)); |
| 327 | Handle<JSFunction> function = |
| 328 | Factory::NewFunctionWithPrototype(symbol, |
| 329 | type, |
| 330 | instance_size, |
| 331 | prototype, |
| 332 | call_code, |
| 333 | is_ecma_native); |
| 334 | SetProperty(target, symbol, function, DONT_ENUM); |
| 335 | if (is_ecma_native) { |
| 336 | function->shared()->set_instance_class_name(*symbol); |
| 337 | } |
| 338 | return function; |
| 339 | } |
| 340 | |
| 341 | |
| 342 | Handle<DescriptorArray> Genesis::ComputeFunctionInstanceDescriptor( |
| 343 | bool make_prototype_read_only, |
| 344 | bool make_prototype_enumerable) { |
| 345 | Handle<DescriptorArray> result = Factory::empty_descriptor_array(); |
| 346 | |
| 347 | // Add prototype. |
| 348 | PropertyAttributes attributes = static_cast<PropertyAttributes>( |
| 349 | (make_prototype_enumerable ? 0 : DONT_ENUM) |
| 350 | | DONT_DELETE |
| 351 | | (make_prototype_read_only ? READ_ONLY : 0)); |
| 352 | result = |
| 353 | Factory::CopyAppendProxyDescriptor( |
| 354 | result, |
| 355 | Factory::prototype_symbol(), |
| 356 | Factory::NewProxy(&Accessors::FunctionPrototype), |
| 357 | attributes); |
| 358 | |
| 359 | attributes = |
| 360 | static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY); |
| 361 | // Add length. |
| 362 | result = |
| 363 | Factory::CopyAppendProxyDescriptor( |
| 364 | result, |
| 365 | Factory::length_symbol(), |
| 366 | Factory::NewProxy(&Accessors::FunctionLength), |
| 367 | attributes); |
| 368 | |
| 369 | // Add name. |
| 370 | result = |
| 371 | Factory::CopyAppendProxyDescriptor( |
| 372 | result, |
| 373 | Factory::name_symbol(), |
| 374 | Factory::NewProxy(&Accessors::FunctionName), |
| 375 | attributes); |
| 376 | |
| 377 | // Add arguments. |
| 378 | result = |
| 379 | Factory::CopyAppendProxyDescriptor( |
| 380 | result, |
| 381 | Factory::arguments_symbol(), |
| 382 | Factory::NewProxy(&Accessors::FunctionArguments), |
| 383 | attributes); |
| 384 | |
| 385 | // Add caller. |
| 386 | result = |
| 387 | Factory::CopyAppendProxyDescriptor( |
| 388 | result, |
| 389 | Factory::caller_symbol(), |
| 390 | Factory::NewProxy(&Accessors::FunctionCaller), |
| 391 | attributes); |
| 392 | |
| 393 | return result; |
| 394 | } |
| 395 | |
| 396 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 397 | Handle<JSFunction> Genesis::CreateEmptyFunction() { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 398 | // Allocate the map for function instances. |
| 399 | Handle<Map> fm = Factory::NewMap(JS_FUNCTION_TYPE, JSFunction::kSize); |
| 400 | global_context()->set_function_instance_map(*fm); |
| 401 | // Please note that the prototype property for function instances must be |
| 402 | // writable. |
| 403 | Handle<DescriptorArray> function_map_descriptors = |
| 404 | ComputeFunctionInstanceDescriptor(false, false); |
| 405 | fm->set_instance_descriptors(*function_map_descriptors); |
| 406 | |
| 407 | // Allocate the function map first and then patch the prototype later |
| 408 | fm = Factory::NewMap(JS_FUNCTION_TYPE, JSFunction::kSize); |
| 409 | global_context()->set_function_map(*fm); |
| 410 | function_map_descriptors = ComputeFunctionInstanceDescriptor(true); |
| 411 | fm->set_instance_descriptors(*function_map_descriptors); |
| 412 | |
| 413 | Handle<String> object_name = Handle<String>(Heap::Object_symbol()); |
| 414 | |
| 415 | { // --- O b j e c t --- |
| 416 | Handle<JSFunction> object_fun = |
| 417 | Factory::NewFunction(object_name, Factory::null_value()); |
| 418 | Handle<Map> object_function_map = |
| 419 | Factory::NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize); |
| 420 | object_fun->set_initial_map(*object_function_map); |
| 421 | object_function_map->set_constructor(*object_fun); |
| 422 | |
| 423 | global_context()->set_object_function(*object_fun); |
| 424 | |
| 425 | // Allocate a new prototype for the object function. |
| 426 | Handle<JSObject> prototype = Factory::NewJSObject(Top::object_function(), |
| 427 | TENURED); |
| 428 | |
| 429 | global_context()->set_initial_object_prototype(*prototype); |
| 430 | SetPrototype(object_fun, prototype); |
| 431 | object_function_map-> |
| 432 | set_instance_descriptors(Heap::empty_descriptor_array()); |
| 433 | } |
| 434 | |
| 435 | // Allocate the empty function as the prototype for function ECMAScript |
| 436 | // 262 15.3.4. |
| 437 | Handle<String> symbol = Factory::LookupAsciiSymbol("Empty"); |
| 438 | Handle<JSFunction> empty_function = |
| 439 | Factory::NewFunction(symbol, Factory::null_value()); |
| 440 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 441 | // --- E m p t y --- |
| 442 | Handle<Code> code = |
| 443 | Handle<Code>(Builtins::builtin(Builtins::EmptyFunction)); |
| 444 | empty_function->set_code(*code); |
| 445 | Handle<String> source = Factory::NewStringFromAscii(CStrVector("() {}")); |
| 446 | Handle<Script> script = Factory::NewScript(source); |
| 447 | script->set_type(Smi::FromInt(Script::TYPE_NATIVE)); |
| 448 | empty_function->shared()->set_script(*script); |
| 449 | empty_function->shared()->set_start_position(0); |
| 450 | empty_function->shared()->set_end_position(source->length()); |
| 451 | empty_function->shared()->DontAdaptArguments(); |
| 452 | global_context()->function_map()->set_prototype(*empty_function); |
| 453 | global_context()->function_instance_map()->set_prototype(*empty_function); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 454 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 455 | // Allocate the function map first and then patch the prototype later |
| 456 | Handle<Map> empty_fm = Factory::CopyMapDropDescriptors(fm); |
| 457 | empty_fm->set_instance_descriptors(*function_map_descriptors); |
| 458 | empty_fm->set_prototype(global_context()->object_function()->prototype()); |
| 459 | empty_function->set_map(*empty_fm); |
| 460 | return empty_function; |
| 461 | } |
| 462 | |
| 463 | |
| 464 | void Genesis::CreateRoots() { |
| 465 | // Allocate the global context FixedArray first and then patch the |
| 466 | // closure and extension object later (we need the empty function |
| 467 | // and the global object, but in order to create those, we need the |
| 468 | // global context). |
| 469 | global_context_ = |
| 470 | Handle<Context>::cast( |
| 471 | GlobalHandles::Create(*Factory::NewGlobalContext())); |
| 472 | Top::set_context(*global_context()); |
| 473 | |
| 474 | // Allocate the message listeners object. |
| 475 | { |
| 476 | v8::NeanderArray listeners; |
| 477 | global_context()->set_message_listeners(*listeners.value()); |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | |
| 482 | Handle<JSGlobalProxy> Genesis::CreateNewGlobals( |
| 483 | v8::Handle<v8::ObjectTemplate> global_template, |
| 484 | Handle<Object> global_object, |
| 485 | Handle<GlobalObject>* inner_global_out) { |
| 486 | // The argument global_template aka data is an ObjectTemplateInfo. |
| 487 | // It has a constructor pointer that points at global_constructor which is a |
| 488 | // FunctionTemplateInfo. |
| 489 | // The global_constructor is used to create or reinitialize the global_proxy. |
| 490 | // The global_constructor also has a prototype_template pointer that points at |
| 491 | // js_global_template which is an ObjectTemplateInfo. |
| 492 | // That in turn has a constructor pointer that points at |
| 493 | // js_global_constructor which is a FunctionTemplateInfo. |
| 494 | // js_global_constructor is used to make js_global_function |
| 495 | // js_global_function is used to make the new inner_global. |
| 496 | // |
| 497 | // --- G l o b a l --- |
| 498 | // Step 1: Create a fresh inner JSGlobalObject. |
| 499 | Handle<JSFunction> js_global_function; |
| 500 | Handle<ObjectTemplateInfo> js_global_template; |
| 501 | if (!global_template.IsEmpty()) { |
| 502 | // Get prototype template of the global_template. |
| 503 | Handle<ObjectTemplateInfo> data = |
| 504 | v8::Utils::OpenHandle(*global_template); |
| 505 | Handle<FunctionTemplateInfo> global_constructor = |
| 506 | Handle<FunctionTemplateInfo>( |
| 507 | FunctionTemplateInfo::cast(data->constructor())); |
| 508 | Handle<Object> proto_template(global_constructor->prototype_template()); |
| 509 | if (!proto_template->IsUndefined()) { |
| 510 | js_global_template = |
| 511 | Handle<ObjectTemplateInfo>::cast(proto_template); |
| 512 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 513 | } |
| 514 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 515 | if (js_global_template.is_null()) { |
| 516 | Handle<String> name = Handle<String>(Heap::empty_symbol()); |
| 517 | Handle<Code> code = Handle<Code>(Builtins::builtin(Builtins::Illegal)); |
| 518 | js_global_function = |
| 519 | Factory::NewFunction(name, JS_GLOBAL_OBJECT_TYPE, |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 520 | JSGlobalObject::kSize, code, true); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 521 | // Change the constructor property of the prototype of the |
| 522 | // hidden global function to refer to the Object function. |
| 523 | Handle<JSObject> prototype = |
| 524 | Handle<JSObject>( |
| 525 | JSObject::cast(js_global_function->instance_prototype())); |
| 526 | SetProperty(prototype, Factory::constructor_symbol(), |
| 527 | Top::object_function(), NONE); |
| 528 | } else { |
| 529 | Handle<FunctionTemplateInfo> js_global_constructor( |
| 530 | FunctionTemplateInfo::cast(js_global_template->constructor())); |
| 531 | js_global_function = |
| 532 | Factory::CreateApiFunction(js_global_constructor, |
| 533 | Factory::InnerGlobalObject); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 534 | } |
| 535 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 536 | js_global_function->initial_map()->set_is_hidden_prototype(); |
| 537 | Handle<GlobalObject> inner_global = |
| 538 | Factory::NewGlobalObject(js_global_function); |
| 539 | if (inner_global_out != NULL) { |
| 540 | *inner_global_out = inner_global; |
| 541 | } |
| 542 | |
| 543 | // Step 2: create or re-initialize the global proxy object. |
| 544 | Handle<JSFunction> global_proxy_function; |
| 545 | if (global_template.IsEmpty()) { |
| 546 | Handle<String> name = Handle<String>(Heap::empty_symbol()); |
| 547 | Handle<Code> code = Handle<Code>(Builtins::builtin(Builtins::Illegal)); |
| 548 | global_proxy_function = |
| 549 | Factory::NewFunction(name, JS_GLOBAL_PROXY_TYPE, |
| 550 | JSGlobalProxy::kSize, code, true); |
| 551 | } else { |
| 552 | Handle<ObjectTemplateInfo> data = |
| 553 | v8::Utils::OpenHandle(*global_template); |
| 554 | Handle<FunctionTemplateInfo> global_constructor( |
| 555 | FunctionTemplateInfo::cast(data->constructor())); |
| 556 | global_proxy_function = |
| 557 | Factory::CreateApiFunction(global_constructor, |
| 558 | Factory::OuterGlobalObject); |
| 559 | } |
| 560 | |
| 561 | Handle<String> global_name = Factory::LookupAsciiSymbol("global"); |
| 562 | global_proxy_function->shared()->set_instance_class_name(*global_name); |
| 563 | global_proxy_function->initial_map()->set_is_access_check_needed(true); |
| 564 | |
| 565 | // Set global_proxy.__proto__ to js_global after ConfigureGlobalObjects |
| 566 | // Return the global proxy. |
| 567 | |
| 568 | if (global_object.location() != NULL) { |
| 569 | ASSERT(global_object->IsJSGlobalProxy()); |
| 570 | return ReinitializeJSGlobalProxy( |
| 571 | global_proxy_function, |
| 572 | Handle<JSGlobalProxy>::cast(global_object)); |
| 573 | } else { |
| 574 | return Handle<JSGlobalProxy>::cast( |
| 575 | Factory::NewJSObject(global_proxy_function, TENURED)); |
| 576 | } |
| 577 | } |
| 578 | |
| 579 | |
| 580 | void Genesis::HookUpGlobalProxy(Handle<GlobalObject> inner_global, |
| 581 | Handle<JSGlobalProxy> global_proxy) { |
| 582 | // Set the global context for the global object. |
| 583 | inner_global->set_global_context(*global_context()); |
| 584 | inner_global->set_global_receiver(*global_proxy); |
| 585 | global_proxy->set_context(*global_context()); |
| 586 | global_context()->set_global_proxy(*global_proxy); |
| 587 | } |
| 588 | |
| 589 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 590 | void Genesis::HookUpInnerGlobal(Handle<GlobalObject> inner_global) { |
| 591 | Handle<GlobalObject> inner_global_from_snapshot( |
| 592 | GlobalObject::cast(global_context_->extension())); |
| 593 | Handle<JSBuiltinsObject> builtins_global(global_context_->builtins()); |
| 594 | global_context_->set_extension(*inner_global); |
| 595 | global_context_->set_global(*inner_global); |
| 596 | global_context_->set_security_token(*inner_global); |
| 597 | static const PropertyAttributes attributes = |
| 598 | static_cast<PropertyAttributes>(READ_ONLY | DONT_DELETE); |
| 599 | ForceSetProperty(builtins_global, |
| 600 | Factory::LookupAsciiSymbol("global"), |
| 601 | inner_global, |
| 602 | attributes); |
| 603 | // Setup the reference from the global object to the builtins object. |
| 604 | JSGlobalObject::cast(*inner_global)->set_builtins(*builtins_global); |
| 605 | TransferNamedProperties(inner_global_from_snapshot, inner_global); |
| 606 | TransferIndexedProperties(inner_global_from_snapshot, inner_global); |
| 607 | } |
| 608 | |
| 609 | |
| 610 | // This is only called if we are not using snapshots. The equivalent |
| 611 | // work in the snapshot case is done in HookUpInnerGlobal. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 612 | void Genesis::InitializeGlobal(Handle<GlobalObject> inner_global, |
| 613 | Handle<JSFunction> empty_function) { |
| 614 | // --- G l o b a l C o n t e x t --- |
| 615 | // Use the empty function as closure (no scope info). |
| 616 | global_context()->set_closure(*empty_function); |
| 617 | global_context()->set_fcontext(*global_context()); |
| 618 | global_context()->set_previous(NULL); |
| 619 | // Set extension and global object. |
| 620 | global_context()->set_extension(*inner_global); |
| 621 | global_context()->set_global(*inner_global); |
| 622 | // Security setup: Set the security token of the global object to |
| 623 | // its the inner global. This makes the security check between two |
| 624 | // different contexts fail by default even in case of global |
| 625 | // object reinitialization. |
| 626 | global_context()->set_security_token(*inner_global); |
| 627 | |
| 628 | Handle<String> object_name = Handle<String>(Heap::Object_symbol()); |
| 629 | SetProperty(inner_global, object_name, Top::object_function(), DONT_ENUM); |
| 630 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 631 | Handle<JSObject> global = Handle<JSObject>(global_context()->global()); |
| 632 | |
| 633 | // Install global Function object |
| 634 | InstallFunction(global, "Function", JS_FUNCTION_TYPE, JSFunction::kSize, |
| 635 | empty_function, Builtins::Illegal, true); // ECMA native. |
| 636 | |
| 637 | { // --- A r r a y --- |
| 638 | Handle<JSFunction> array_function = |
| 639 | InstallFunction(global, "Array", JS_ARRAY_TYPE, JSArray::kSize, |
| 640 | Top::initial_object_prototype(), Builtins::ArrayCode, |
| 641 | true); |
| 642 | array_function->shared()->set_construct_stub( |
| 643 | Builtins::builtin(Builtins::ArrayConstructCode)); |
| 644 | array_function->shared()->DontAdaptArguments(); |
| 645 | |
| 646 | // This seems a bit hackish, but we need to make sure Array.length |
| 647 | // is 1. |
| 648 | array_function->shared()->set_length(1); |
| 649 | Handle<DescriptorArray> array_descriptors = |
| 650 | Factory::CopyAppendProxyDescriptor( |
| 651 | Factory::empty_descriptor_array(), |
| 652 | Factory::length_symbol(), |
| 653 | Factory::NewProxy(&Accessors::ArrayLength), |
| 654 | static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE)); |
| 655 | |
| 656 | // Cache the fast JavaScript array map |
| 657 | global_context()->set_js_array_map(array_function->initial_map()); |
| 658 | global_context()->js_array_map()->set_instance_descriptors( |
| 659 | *array_descriptors); |
| 660 | // array_function is used internally. JS code creating array object should |
| 661 | // search for the 'Array' property on the global object and use that one |
| 662 | // as the constructor. 'Array' property on a global object can be |
| 663 | // overwritten by JS code. |
| 664 | global_context()->set_array_function(*array_function); |
| 665 | } |
| 666 | |
| 667 | { // --- N u m b e r --- |
| 668 | Handle<JSFunction> number_fun = |
| 669 | InstallFunction(global, "Number", JS_VALUE_TYPE, JSValue::kSize, |
| 670 | Top::initial_object_prototype(), Builtins::Illegal, |
| 671 | true); |
| 672 | global_context()->set_number_function(*number_fun); |
| 673 | } |
| 674 | |
| 675 | { // --- B o o l e a n --- |
| 676 | Handle<JSFunction> boolean_fun = |
| 677 | InstallFunction(global, "Boolean", JS_VALUE_TYPE, JSValue::kSize, |
| 678 | Top::initial_object_prototype(), Builtins::Illegal, |
| 679 | true); |
| 680 | global_context()->set_boolean_function(*boolean_fun); |
| 681 | } |
| 682 | |
| 683 | { // --- S t r i n g --- |
| 684 | Handle<JSFunction> string_fun = |
| 685 | InstallFunction(global, "String", JS_VALUE_TYPE, JSValue::kSize, |
| 686 | Top::initial_object_prototype(), Builtins::Illegal, |
| 687 | true); |
| 688 | global_context()->set_string_function(*string_fun); |
| 689 | // Add 'length' property to strings. |
| 690 | Handle<DescriptorArray> string_descriptors = |
| 691 | Factory::CopyAppendProxyDescriptor( |
| 692 | Factory::empty_descriptor_array(), |
| 693 | Factory::length_symbol(), |
| 694 | Factory::NewProxy(&Accessors::StringLength), |
| 695 | static_cast<PropertyAttributes>(DONT_ENUM | |
| 696 | DONT_DELETE | |
| 697 | READ_ONLY)); |
| 698 | |
| 699 | Handle<Map> string_map = |
| 700 | Handle<Map>(global_context()->string_function()->initial_map()); |
| 701 | string_map->set_instance_descriptors(*string_descriptors); |
| 702 | } |
| 703 | |
| 704 | { // --- D a t e --- |
| 705 | // Builtin functions for Date.prototype. |
| 706 | Handle<JSFunction> date_fun = |
| 707 | InstallFunction(global, "Date", JS_VALUE_TYPE, JSValue::kSize, |
| 708 | Top::initial_object_prototype(), Builtins::Illegal, |
| 709 | true); |
| 710 | |
| 711 | global_context()->set_date_function(*date_fun); |
| 712 | } |
| 713 | |
| 714 | |
| 715 | { // -- R e g E x p |
| 716 | // Builtin functions for RegExp.prototype. |
| 717 | Handle<JSFunction> regexp_fun = |
| 718 | InstallFunction(global, "RegExp", JS_REGEXP_TYPE, JSRegExp::kSize, |
| 719 | Top::initial_object_prototype(), Builtins::Illegal, |
| 720 | true); |
| 721 | |
| 722 | global_context()->set_regexp_function(*regexp_fun); |
| 723 | } |
| 724 | |
| 725 | { // -- J S O N |
| 726 | Handle<String> name = Factory::NewStringFromAscii(CStrVector("JSON")); |
| 727 | Handle<JSFunction> cons = Factory::NewFunction( |
| 728 | name, |
| 729 | Factory::the_hole_value()); |
| 730 | cons->SetInstancePrototype(global_context()->initial_object_prototype()); |
| 731 | cons->SetInstanceClassName(*name); |
| 732 | Handle<JSObject> json_object = Factory::NewJSObject(cons, TENURED); |
| 733 | ASSERT(json_object->IsJSObject()); |
| 734 | SetProperty(global, name, json_object, DONT_ENUM); |
| 735 | global_context()->set_json_object(*json_object); |
| 736 | } |
| 737 | |
| 738 | { // --- arguments_boilerplate_ |
| 739 | // Make sure we can recognize argument objects at runtime. |
| 740 | // This is done by introducing an anonymous function with |
| 741 | // class_name equals 'Arguments'. |
| 742 | Handle<String> symbol = Factory::LookupAsciiSymbol("Arguments"); |
| 743 | Handle<Code> code = Handle<Code>(Builtins::builtin(Builtins::Illegal)); |
| 744 | Handle<JSObject> prototype = |
| 745 | Handle<JSObject>( |
| 746 | JSObject::cast(global_context()->object_function()->prototype())); |
| 747 | |
| 748 | Handle<JSFunction> function = |
| 749 | Factory::NewFunctionWithPrototype(symbol, |
| 750 | JS_OBJECT_TYPE, |
| 751 | JSObject::kHeaderSize, |
| 752 | prototype, |
| 753 | code, |
| 754 | false); |
| 755 | ASSERT(!function->has_initial_map()); |
| 756 | function->shared()->set_instance_class_name(*symbol); |
| 757 | function->shared()->set_expected_nof_properties(2); |
| 758 | Handle<JSObject> result = Factory::NewJSObject(function); |
| 759 | |
| 760 | global_context()->set_arguments_boilerplate(*result); |
| 761 | // Note: callee must be added as the first property and |
| 762 | // length must be added as the second property. |
| 763 | SetProperty(result, Factory::callee_symbol(), |
| 764 | Factory::undefined_value(), |
| 765 | DONT_ENUM); |
| 766 | SetProperty(result, Factory::length_symbol(), |
| 767 | Factory::undefined_value(), |
| 768 | DONT_ENUM); |
| 769 | |
| 770 | #ifdef DEBUG |
| 771 | LookupResult lookup; |
| 772 | result->LocalLookup(Heap::callee_symbol(), &lookup); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 773 | ASSERT(lookup.IsProperty() && (lookup.type() == FIELD)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 774 | ASSERT(lookup.GetFieldIndex() == Heap::arguments_callee_index); |
| 775 | |
| 776 | result->LocalLookup(Heap::length_symbol(), &lookup); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 777 | ASSERT(lookup.IsProperty() && (lookup.type() == FIELD)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 778 | ASSERT(lookup.GetFieldIndex() == Heap::arguments_length_index); |
| 779 | |
| 780 | ASSERT(result->map()->inobject_properties() > Heap::arguments_callee_index); |
| 781 | ASSERT(result->map()->inobject_properties() > Heap::arguments_length_index); |
| 782 | |
| 783 | // Check the state of the object. |
| 784 | ASSERT(result->HasFastProperties()); |
| 785 | ASSERT(result->HasFastElements()); |
| 786 | #endif |
| 787 | } |
| 788 | |
| 789 | { // --- context extension |
| 790 | // Create a function for the context extension objects. |
| 791 | Handle<Code> code = Handle<Code>(Builtins::builtin(Builtins::Illegal)); |
| 792 | Handle<JSFunction> context_extension_fun = |
| 793 | Factory::NewFunction(Factory::empty_symbol(), |
| 794 | JS_CONTEXT_EXTENSION_OBJECT_TYPE, |
| 795 | JSObject::kHeaderSize, |
| 796 | code, |
| 797 | true); |
| 798 | |
| 799 | Handle<String> name = Factory::LookupAsciiSymbol("context_extension"); |
| 800 | context_extension_fun->shared()->set_instance_class_name(*name); |
| 801 | global_context()->set_context_extension_function(*context_extension_fun); |
| 802 | } |
| 803 | |
| 804 | |
| 805 | { |
| 806 | // Setup the call-as-function delegate. |
| 807 | Handle<Code> code = |
| 808 | Handle<Code>(Builtins::builtin(Builtins::HandleApiCallAsFunction)); |
| 809 | Handle<JSFunction> delegate = |
| 810 | Factory::NewFunction(Factory::empty_symbol(), JS_OBJECT_TYPE, |
| 811 | JSObject::kHeaderSize, code, true); |
| 812 | global_context()->set_call_as_function_delegate(*delegate); |
| 813 | delegate->shared()->DontAdaptArguments(); |
| 814 | } |
| 815 | |
| 816 | { |
| 817 | // Setup the call-as-constructor delegate. |
| 818 | Handle<Code> code = |
| 819 | Handle<Code>(Builtins::builtin(Builtins::HandleApiCallAsConstructor)); |
| 820 | Handle<JSFunction> delegate = |
| 821 | Factory::NewFunction(Factory::empty_symbol(), JS_OBJECT_TYPE, |
| 822 | JSObject::kHeaderSize, code, true); |
| 823 | global_context()->set_call_as_constructor_delegate(*delegate); |
| 824 | delegate->shared()->DontAdaptArguments(); |
| 825 | } |
| 826 | |
| 827 | global_context()->set_special_function_table(Heap::empty_fixed_array()); |
| 828 | |
| 829 | // Initialize the out of memory slot. |
| 830 | global_context()->set_out_of_memory(Heap::false_value()); |
| 831 | |
| 832 | // Initialize the data slot. |
| 833 | global_context()->set_data(Heap::undefined_value()); |
| 834 | } |
| 835 | |
| 836 | |
| 837 | bool Genesis::CompileBuiltin(int index) { |
| 838 | Vector<const char> name = Natives::GetScriptName(index); |
| 839 | Handle<String> source_code = Bootstrapper::NativesSourceLookup(index); |
| 840 | return CompileNative(name, source_code); |
| 841 | } |
| 842 | |
| 843 | |
| 844 | bool Genesis::CompileNative(Vector<const char> name, Handle<String> source) { |
| 845 | HandleScope scope; |
| 846 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 847 | Debugger::set_compiling_natives(true); |
| 848 | #endif |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 849 | bool result = CompileScriptCached(name, |
| 850 | source, |
| 851 | NULL, |
| 852 | NULL, |
| 853 | Handle<Context>(Top::context()), |
| 854 | true); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 855 | ASSERT(Top::has_pending_exception() != result); |
| 856 | if (!result) Top::clear_pending_exception(); |
| 857 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 858 | Debugger::set_compiling_natives(false); |
| 859 | #endif |
| 860 | return result; |
| 861 | } |
| 862 | |
| 863 | |
| 864 | bool Genesis::CompileScriptCached(Vector<const char> name, |
| 865 | Handle<String> source, |
| 866 | SourceCodeCache* cache, |
| 867 | v8::Extension* extension, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 868 | Handle<Context> top_context, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 869 | bool use_runtime_context) { |
| 870 | HandleScope scope; |
| 871 | Handle<JSFunction> boilerplate; |
| 872 | |
| 873 | // If we can't find the function in the cache, we compile a new |
| 874 | // function and insert it into the cache. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 875 | if (cache == NULL || !cache->Lookup(name, &boilerplate)) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 876 | ASSERT(source->IsAsciiRepresentation()); |
| 877 | Handle<String> script_name = Factory::NewStringFromUtf8(name); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 878 | boilerplate = Compiler::Compile( |
| 879 | source, |
| 880 | script_name, |
| 881 | 0, |
| 882 | 0, |
| 883 | extension, |
| 884 | NULL, |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 885 | Handle<String>::null(), |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 886 | use_runtime_context ? NATIVES_CODE : NOT_NATIVES_CODE); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 887 | if (boilerplate.is_null()) return false; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 888 | if (cache != NULL) cache->Add(name, boilerplate); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 889 | } |
| 890 | |
| 891 | // Setup the function context. Conceptually, we should clone the |
| 892 | // function before overwriting the context but since we're in a |
| 893 | // single-threaded environment it is not strictly necessary. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 894 | ASSERT(top_context->IsGlobalContext()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 895 | Handle<Context> context = |
| 896 | Handle<Context>(use_runtime_context |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 897 | ? Handle<Context>(top_context->runtime_context()) |
| 898 | : top_context); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 899 | Handle<JSFunction> fun = |
| 900 | Factory::NewFunctionFromBoilerplate(boilerplate, context); |
| 901 | |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 902 | // Call function using either the runtime object or the global |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 903 | // object as the receiver. Provide no parameters. |
| 904 | Handle<Object> receiver = |
| 905 | Handle<Object>(use_runtime_context |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 906 | ? top_context->builtins() |
| 907 | : top_context->global()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 908 | bool has_pending_exception; |
| 909 | Handle<Object> result = |
| 910 | Execution::Call(fun, receiver, 0, NULL, &has_pending_exception); |
| 911 | if (has_pending_exception) return false; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 912 | return true; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 913 | } |
| 914 | |
| 915 | |
| 916 | #define INSTALL_NATIVE(Type, name, var) \ |
| 917 | Handle<String> var##_name = Factory::LookupAsciiSymbol(name); \ |
| 918 | global_context()->set_##var(Type::cast(global_context()-> \ |
| 919 | builtins()-> \ |
| 920 | GetProperty(*var##_name))); |
| 921 | |
| 922 | void Genesis::InstallNativeFunctions() { |
| 923 | HandleScope scope; |
| 924 | INSTALL_NATIVE(JSFunction, "CreateDate", create_date_fun); |
| 925 | INSTALL_NATIVE(JSFunction, "ToNumber", to_number_fun); |
| 926 | INSTALL_NATIVE(JSFunction, "ToString", to_string_fun); |
| 927 | INSTALL_NATIVE(JSFunction, "ToDetailString", to_detail_string_fun); |
| 928 | INSTALL_NATIVE(JSFunction, "ToObject", to_object_fun); |
| 929 | INSTALL_NATIVE(JSFunction, "ToInteger", to_integer_fun); |
| 930 | INSTALL_NATIVE(JSFunction, "ToUint32", to_uint32_fun); |
| 931 | INSTALL_NATIVE(JSFunction, "ToInt32", to_int32_fun); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 932 | INSTALL_NATIVE(JSFunction, "GlobalEval", global_eval_fun); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 933 | INSTALL_NATIVE(JSFunction, "Instantiate", instantiate_fun); |
| 934 | INSTALL_NATIVE(JSFunction, "ConfigureTemplateInstance", |
| 935 | configure_instance_fun); |
| 936 | INSTALL_NATIVE(JSFunction, "MakeMessage", make_message_fun); |
| 937 | INSTALL_NATIVE(JSFunction, "GetStackTraceLine", get_stack_trace_line_fun); |
| 938 | INSTALL_NATIVE(JSObject, "functionCache", function_cache); |
| 939 | } |
| 940 | |
| 941 | #undef INSTALL_NATIVE |
| 942 | |
| 943 | |
| 944 | bool Genesis::InstallNatives() { |
| 945 | HandleScope scope; |
| 946 | |
| 947 | // Create a function for the builtins object. Allocate space for the |
| 948 | // JavaScript builtins, a reference to the builtins object |
| 949 | // (itself) and a reference to the global_context directly in the object. |
| 950 | Handle<Code> code = Handle<Code>(Builtins::builtin(Builtins::Illegal)); |
| 951 | Handle<JSFunction> builtins_fun = |
| 952 | Factory::NewFunction(Factory::empty_symbol(), JS_BUILTINS_OBJECT_TYPE, |
| 953 | JSBuiltinsObject::kSize, code, true); |
| 954 | |
| 955 | Handle<String> name = Factory::LookupAsciiSymbol("builtins"); |
| 956 | builtins_fun->shared()->set_instance_class_name(*name); |
| 957 | |
| 958 | // Allocate the builtins object. |
| 959 | Handle<JSBuiltinsObject> builtins = |
| 960 | Handle<JSBuiltinsObject>::cast(Factory::NewGlobalObject(builtins_fun)); |
| 961 | builtins->set_builtins(*builtins); |
| 962 | builtins->set_global_context(*global_context()); |
| 963 | builtins->set_global_receiver(*builtins); |
| 964 | |
| 965 | // Setup the 'global' properties of the builtins object. The |
| 966 | // 'global' property that refers to the global object is the only |
| 967 | // way to get from code running in the builtins context to the |
| 968 | // global object. |
| 969 | static const PropertyAttributes attributes = |
| 970 | static_cast<PropertyAttributes>(READ_ONLY | DONT_DELETE); |
| 971 | SetProperty(builtins, Factory::LookupAsciiSymbol("global"), |
| 972 | Handle<Object>(global_context()->global()), attributes); |
| 973 | |
| 974 | // Setup the reference from the global object to the builtins object. |
| 975 | JSGlobalObject::cast(global_context()->global())->set_builtins(*builtins); |
| 976 | |
| 977 | // Create a bridge function that has context in the global context. |
| 978 | Handle<JSFunction> bridge = |
| 979 | Factory::NewFunction(Factory::empty_symbol(), Factory::undefined_value()); |
| 980 | ASSERT(bridge->context() == *Top::global_context()); |
| 981 | |
| 982 | // Allocate the builtins context. |
| 983 | Handle<Context> context = |
| 984 | Factory::NewFunctionContext(Context::MIN_CONTEXT_SLOTS, bridge); |
| 985 | context->set_global(*builtins); // override builtins global object |
| 986 | |
| 987 | global_context()->set_runtime_context(*context); |
| 988 | |
| 989 | { // -- S c r i p t |
| 990 | // Builtin functions for Script. |
| 991 | Handle<JSFunction> script_fun = |
| 992 | InstallFunction(builtins, "Script", JS_VALUE_TYPE, JSValue::kSize, |
| 993 | Top::initial_object_prototype(), Builtins::Illegal, |
| 994 | false); |
| 995 | Handle<JSObject> prototype = |
| 996 | Factory::NewJSObject(Top::object_function(), TENURED); |
| 997 | SetPrototype(script_fun, prototype); |
| 998 | global_context()->set_script_function(*script_fun); |
| 999 | |
| 1000 | // Add 'source' and 'data' property to scripts. |
| 1001 | PropertyAttributes common_attributes = |
| 1002 | static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE | READ_ONLY); |
| 1003 | Handle<Proxy> proxy_source = Factory::NewProxy(&Accessors::ScriptSource); |
| 1004 | Handle<DescriptorArray> script_descriptors = |
| 1005 | Factory::CopyAppendProxyDescriptor( |
| 1006 | Factory::empty_descriptor_array(), |
| 1007 | Factory::LookupAsciiSymbol("source"), |
| 1008 | proxy_source, |
| 1009 | common_attributes); |
| 1010 | Handle<Proxy> proxy_name = Factory::NewProxy(&Accessors::ScriptName); |
| 1011 | script_descriptors = |
| 1012 | Factory::CopyAppendProxyDescriptor( |
| 1013 | script_descriptors, |
| 1014 | Factory::LookupAsciiSymbol("name"), |
| 1015 | proxy_name, |
| 1016 | common_attributes); |
| 1017 | Handle<Proxy> proxy_id = Factory::NewProxy(&Accessors::ScriptId); |
| 1018 | script_descriptors = |
| 1019 | Factory::CopyAppendProxyDescriptor( |
| 1020 | script_descriptors, |
| 1021 | Factory::LookupAsciiSymbol("id"), |
| 1022 | proxy_id, |
| 1023 | common_attributes); |
| 1024 | Handle<Proxy> proxy_line_offset = |
| 1025 | Factory::NewProxy(&Accessors::ScriptLineOffset); |
| 1026 | script_descriptors = |
| 1027 | Factory::CopyAppendProxyDescriptor( |
| 1028 | script_descriptors, |
| 1029 | Factory::LookupAsciiSymbol("line_offset"), |
| 1030 | proxy_line_offset, |
| 1031 | common_attributes); |
| 1032 | Handle<Proxy> proxy_column_offset = |
| 1033 | Factory::NewProxy(&Accessors::ScriptColumnOffset); |
| 1034 | script_descriptors = |
| 1035 | Factory::CopyAppendProxyDescriptor( |
| 1036 | script_descriptors, |
| 1037 | Factory::LookupAsciiSymbol("column_offset"), |
| 1038 | proxy_column_offset, |
| 1039 | common_attributes); |
| 1040 | Handle<Proxy> proxy_data = Factory::NewProxy(&Accessors::ScriptData); |
| 1041 | script_descriptors = |
| 1042 | Factory::CopyAppendProxyDescriptor( |
| 1043 | script_descriptors, |
| 1044 | Factory::LookupAsciiSymbol("data"), |
| 1045 | proxy_data, |
| 1046 | common_attributes); |
| 1047 | Handle<Proxy> proxy_type = Factory::NewProxy(&Accessors::ScriptType); |
| 1048 | script_descriptors = |
| 1049 | Factory::CopyAppendProxyDescriptor( |
| 1050 | script_descriptors, |
| 1051 | Factory::LookupAsciiSymbol("type"), |
| 1052 | proxy_type, |
| 1053 | common_attributes); |
| 1054 | Handle<Proxy> proxy_compilation_type = |
| 1055 | Factory::NewProxy(&Accessors::ScriptCompilationType); |
| 1056 | script_descriptors = |
| 1057 | Factory::CopyAppendProxyDescriptor( |
| 1058 | script_descriptors, |
| 1059 | Factory::LookupAsciiSymbol("compilation_type"), |
| 1060 | proxy_compilation_type, |
| 1061 | common_attributes); |
| 1062 | Handle<Proxy> proxy_line_ends = |
| 1063 | Factory::NewProxy(&Accessors::ScriptLineEnds); |
| 1064 | script_descriptors = |
| 1065 | Factory::CopyAppendProxyDescriptor( |
| 1066 | script_descriptors, |
| 1067 | Factory::LookupAsciiSymbol("line_ends"), |
| 1068 | proxy_line_ends, |
| 1069 | common_attributes); |
| 1070 | Handle<Proxy> proxy_context_data = |
| 1071 | Factory::NewProxy(&Accessors::ScriptContextData); |
| 1072 | script_descriptors = |
| 1073 | Factory::CopyAppendProxyDescriptor( |
| 1074 | script_descriptors, |
| 1075 | Factory::LookupAsciiSymbol("context_data"), |
| 1076 | proxy_context_data, |
| 1077 | common_attributes); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1078 | Handle<Proxy> proxy_eval_from_script = |
| 1079 | Factory::NewProxy(&Accessors::ScriptEvalFromScript); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1080 | script_descriptors = |
| 1081 | Factory::CopyAppendProxyDescriptor( |
| 1082 | script_descriptors, |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1083 | Factory::LookupAsciiSymbol("eval_from_script"), |
| 1084 | proxy_eval_from_script, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1085 | common_attributes); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1086 | Handle<Proxy> proxy_eval_from_script_position = |
| 1087 | Factory::NewProxy(&Accessors::ScriptEvalFromScriptPosition); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1088 | script_descriptors = |
| 1089 | Factory::CopyAppendProxyDescriptor( |
| 1090 | script_descriptors, |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1091 | Factory::LookupAsciiSymbol("eval_from_script_position"), |
| 1092 | proxy_eval_from_script_position, |
| 1093 | common_attributes); |
| 1094 | Handle<Proxy> proxy_eval_from_function_name = |
| 1095 | Factory::NewProxy(&Accessors::ScriptEvalFromFunctionName); |
| 1096 | script_descriptors = |
| 1097 | Factory::CopyAppendProxyDescriptor( |
| 1098 | script_descriptors, |
| 1099 | Factory::LookupAsciiSymbol("eval_from_function_name"), |
| 1100 | proxy_eval_from_function_name, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1101 | common_attributes); |
| 1102 | |
| 1103 | Handle<Map> script_map = Handle<Map>(script_fun->initial_map()); |
| 1104 | script_map->set_instance_descriptors(*script_descriptors); |
| 1105 | |
| 1106 | // Allocate the empty script. |
| 1107 | Handle<Script> script = Factory::NewScript(Factory::empty_string()); |
| 1108 | script->set_type(Smi::FromInt(Script::TYPE_NATIVE)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1109 | Heap::public_set_empty_script(*script); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1110 | } |
| 1111 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1112 | // Install natives. |
| 1113 | for (int i = Natives::GetDebuggerCount(); |
| 1114 | i < Natives::GetBuiltinsCount(); |
| 1115 | i++) { |
| 1116 | Vector<const char> name = Natives::GetScriptName(i); |
| 1117 | if (!CompileBuiltin(i)) return false; |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1118 | // TODO(ager): We really only need to install the JS builtin |
| 1119 | // functions on the builtins object after compiling and running |
| 1120 | // runtime.js. |
| 1121 | if (!InstallJSBuiltins(builtins)) return false; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1122 | } |
| 1123 | |
| 1124 | InstallNativeFunctions(); |
| 1125 | |
| 1126 | // Install Function.prototype.call and apply. |
| 1127 | { Handle<String> key = Factory::function_class_symbol(); |
| 1128 | Handle<JSFunction> function = |
| 1129 | Handle<JSFunction>::cast(GetProperty(Top::global(), key)); |
| 1130 | Handle<JSObject> proto = |
| 1131 | Handle<JSObject>(JSObject::cast(function->instance_prototype())); |
| 1132 | |
| 1133 | // Install the call and the apply functions. |
| 1134 | Handle<JSFunction> call = |
| 1135 | InstallFunction(proto, "call", JS_OBJECT_TYPE, JSObject::kHeaderSize, |
| 1136 | Factory::NewJSObject(Top::object_function(), TENURED), |
| 1137 | Builtins::FunctionCall, |
| 1138 | false); |
| 1139 | Handle<JSFunction> apply = |
| 1140 | InstallFunction(proto, "apply", JS_OBJECT_TYPE, JSObject::kHeaderSize, |
| 1141 | Factory::NewJSObject(Top::object_function(), TENURED), |
| 1142 | Builtins::FunctionApply, |
| 1143 | false); |
| 1144 | |
| 1145 | // Make sure that Function.prototype.call appears to be compiled. |
| 1146 | // The code will never be called, but inline caching for call will |
| 1147 | // only work if it appears to be compiled. |
| 1148 | call->shared()->DontAdaptArguments(); |
| 1149 | ASSERT(call->is_compiled()); |
| 1150 | |
| 1151 | // Set the expected parameters for apply to 2; required by builtin. |
| 1152 | apply->shared()->set_formal_parameter_count(2); |
| 1153 | |
| 1154 | // Set the lengths for the functions to satisfy ECMA-262. |
| 1155 | call->shared()->set_length(1); |
| 1156 | apply->shared()->set_length(2); |
| 1157 | } |
| 1158 | |
| 1159 | #ifdef DEBUG |
| 1160 | builtins->Verify(); |
| 1161 | #endif |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1162 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1163 | return true; |
| 1164 | } |
| 1165 | |
| 1166 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1167 | int BootstrapperActive::nesting_ = 0; |
| 1168 | |
| 1169 | |
| 1170 | bool Bootstrapper::InstallExtensions(Handle<Context> global_context, |
| 1171 | v8::ExtensionConfiguration* extensions) { |
| 1172 | BootstrapperActive active; |
| 1173 | SaveContext saved_context; |
| 1174 | Top::set_context(*global_context); |
| 1175 | if (!Genesis::InstallExtensions(global_context, extensions)) return false; |
| 1176 | Genesis::InstallSpecialObjects(global_context); |
| 1177 | return true; |
| 1178 | } |
| 1179 | |
| 1180 | |
| 1181 | void Genesis::InstallSpecialObjects(Handle<Context> global_context) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1182 | HandleScope scope; |
| 1183 | Handle<JSGlobalObject> js_global( |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1184 | JSGlobalObject::cast(global_context->global())); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1185 | // Expose the natives in global if a name for it is specified. |
| 1186 | if (FLAG_expose_natives_as != NULL && strlen(FLAG_expose_natives_as) != 0) { |
| 1187 | Handle<String> natives_string = |
| 1188 | Factory::LookupAsciiSymbol(FLAG_expose_natives_as); |
| 1189 | SetProperty(js_global, natives_string, |
| 1190 | Handle<JSObject>(js_global->builtins()), DONT_ENUM); |
| 1191 | } |
| 1192 | |
| 1193 | Handle<Object> Error = GetProperty(js_global, "Error"); |
| 1194 | if (Error->IsJSObject()) { |
| 1195 | Handle<String> name = Factory::LookupAsciiSymbol("stackTraceLimit"); |
| 1196 | SetProperty(Handle<JSObject>::cast(Error), |
| 1197 | name, |
| 1198 | Handle<Smi>(Smi::FromInt(FLAG_stack_trace_limit)), |
| 1199 | NONE); |
| 1200 | } |
| 1201 | |
| 1202 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 1203 | // Expose the debug global object in global if a name for it is specified. |
| 1204 | if (FLAG_expose_debug_as != NULL && strlen(FLAG_expose_debug_as) != 0) { |
| 1205 | // If loading fails we just bail out without installing the |
| 1206 | // debugger but without tanking the whole context. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1207 | if (!Debug::Load()) return; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1208 | // Set the security token for the debugger context to the same as |
| 1209 | // the shell global context to allow calling between these (otherwise |
| 1210 | // exposing debug global object doesn't make much sense). |
| 1211 | Debug::debug_context()->set_security_token( |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1212 | global_context->security_token()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1213 | |
| 1214 | Handle<String> debug_string = |
| 1215 | Factory::LookupAsciiSymbol(FLAG_expose_debug_as); |
| 1216 | SetProperty(js_global, debug_string, |
| 1217 | Handle<Object>(Debug::debug_context()->global_proxy()), DONT_ENUM); |
| 1218 | } |
| 1219 | #endif |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1220 | } |
| 1221 | |
| 1222 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1223 | bool Genesis::InstallExtensions(Handle<Context> global_context, |
| 1224 | v8::ExtensionConfiguration* extensions) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1225 | // Clear coloring of extension list |
| 1226 | v8::RegisteredExtension* current = v8::RegisteredExtension::first_extension(); |
| 1227 | while (current != NULL) { |
| 1228 | current->set_state(v8::UNVISITED); |
| 1229 | current = current->next(); |
| 1230 | } |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1231 | // Install auto extensions. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1232 | current = v8::RegisteredExtension::first_extension(); |
| 1233 | while (current != NULL) { |
| 1234 | if (current->extension()->auto_enable()) |
| 1235 | InstallExtension(current); |
| 1236 | current = current->next(); |
| 1237 | } |
| 1238 | |
| 1239 | if (FLAG_expose_gc) InstallExtension("v8/gc"); |
| 1240 | |
| 1241 | if (extensions == NULL) return true; |
| 1242 | // Install required extensions |
| 1243 | int count = v8::ImplementationUtilities::GetNameCount(extensions); |
| 1244 | const char** names = v8::ImplementationUtilities::GetNames(extensions); |
| 1245 | for (int i = 0; i < count; i++) { |
| 1246 | if (!InstallExtension(names[i])) |
| 1247 | return false; |
| 1248 | } |
| 1249 | |
| 1250 | return true; |
| 1251 | } |
| 1252 | |
| 1253 | |
| 1254 | // Installs a named extension. This methods is unoptimized and does |
| 1255 | // not scale well if we want to support a large number of extensions. |
| 1256 | bool Genesis::InstallExtension(const char* name) { |
| 1257 | v8::RegisteredExtension* current = v8::RegisteredExtension::first_extension(); |
| 1258 | // Loop until we find the relevant extension |
| 1259 | while (current != NULL) { |
| 1260 | if (strcmp(name, current->extension()->name()) == 0) break; |
| 1261 | current = current->next(); |
| 1262 | } |
| 1263 | // Didn't find the extension; fail. |
| 1264 | if (current == NULL) { |
| 1265 | v8::Utils::ReportApiFailure( |
| 1266 | "v8::Context::New()", "Cannot find required extension"); |
| 1267 | return false; |
| 1268 | } |
| 1269 | return InstallExtension(current); |
| 1270 | } |
| 1271 | |
| 1272 | |
| 1273 | bool Genesis::InstallExtension(v8::RegisteredExtension* current) { |
| 1274 | HandleScope scope; |
| 1275 | |
| 1276 | if (current->state() == v8::INSTALLED) return true; |
| 1277 | // The current node has already been visited so there must be a |
| 1278 | // cycle in the dependency graph; fail. |
| 1279 | if (current->state() == v8::VISITED) { |
| 1280 | v8::Utils::ReportApiFailure( |
| 1281 | "v8::Context::New()", "Circular extension dependency"); |
| 1282 | return false; |
| 1283 | } |
| 1284 | ASSERT(current->state() == v8::UNVISITED); |
| 1285 | current->set_state(v8::VISITED); |
| 1286 | v8::Extension* extension = current->extension(); |
| 1287 | // Install the extension's dependencies |
| 1288 | for (int i = 0; i < extension->dependency_count(); i++) { |
| 1289 | if (!InstallExtension(extension->dependencies()[i])) return false; |
| 1290 | } |
| 1291 | Vector<const char> source = CStrVector(extension->source()); |
| 1292 | Handle<String> source_code = Factory::NewStringFromAscii(source); |
| 1293 | bool result = CompileScriptCached(CStrVector(extension->name()), |
| 1294 | source_code, |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1295 | &extensions_cache, |
| 1296 | extension, |
| 1297 | Handle<Context>(Top::context()), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1298 | false); |
| 1299 | ASSERT(Top::has_pending_exception() != result); |
| 1300 | if (!result) { |
| 1301 | Top::clear_pending_exception(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1302 | } |
| 1303 | current->set_state(v8::INSTALLED); |
| 1304 | return result; |
| 1305 | } |
| 1306 | |
| 1307 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1308 | bool Genesis::InstallJSBuiltins(Handle<JSBuiltinsObject> builtins) { |
| 1309 | HandleScope scope; |
| 1310 | for (int i = 0; i < Builtins::NumberOfJavaScriptBuiltins(); i++) { |
| 1311 | Builtins::JavaScript id = static_cast<Builtins::JavaScript>(i); |
| 1312 | Handle<String> name = Factory::LookupAsciiSymbol(Builtins::GetName(id)); |
| 1313 | Handle<JSFunction> function |
| 1314 | = Handle<JSFunction>(JSFunction::cast(builtins->GetProperty(*name))); |
| 1315 | builtins->set_javascript_builtin(id, *function); |
| 1316 | Handle<SharedFunctionInfo> shared |
| 1317 | = Handle<SharedFunctionInfo>(function->shared()); |
| 1318 | if (!EnsureCompiled(shared, CLEAR_EXCEPTION)) return false; |
| 1319 | } |
| 1320 | return true; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1321 | } |
| 1322 | |
| 1323 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1324 | bool Genesis::ConfigureGlobalObjects( |
| 1325 | v8::Handle<v8::ObjectTemplate> global_proxy_template) { |
| 1326 | Handle<JSObject> global_proxy( |
| 1327 | JSObject::cast(global_context()->global_proxy())); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1328 | Handle<JSObject> inner_global(JSObject::cast(global_context()->global())); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1329 | |
| 1330 | if (!global_proxy_template.IsEmpty()) { |
| 1331 | // Configure the global proxy object. |
| 1332 | Handle<ObjectTemplateInfo> proxy_data = |
| 1333 | v8::Utils::OpenHandle(*global_proxy_template); |
| 1334 | if (!ConfigureApiObject(global_proxy, proxy_data)) return false; |
| 1335 | |
| 1336 | // Configure the inner global object. |
| 1337 | Handle<FunctionTemplateInfo> proxy_constructor( |
| 1338 | FunctionTemplateInfo::cast(proxy_data->constructor())); |
| 1339 | if (!proxy_constructor->prototype_template()->IsUndefined()) { |
| 1340 | Handle<ObjectTemplateInfo> inner_data( |
| 1341 | ObjectTemplateInfo::cast(proxy_constructor->prototype_template())); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1342 | if (!ConfigureApiObject(inner_global, inner_data)) return false; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1343 | } |
| 1344 | } |
| 1345 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1346 | SetObjectPrototype(global_proxy, inner_global); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1347 | return true; |
| 1348 | } |
| 1349 | |
| 1350 | |
| 1351 | bool Genesis::ConfigureApiObject(Handle<JSObject> object, |
| 1352 | Handle<ObjectTemplateInfo> object_template) { |
| 1353 | ASSERT(!object_template.is_null()); |
| 1354 | ASSERT(object->IsInstanceOf( |
| 1355 | FunctionTemplateInfo::cast(object_template->constructor()))); |
| 1356 | |
| 1357 | bool pending_exception = false; |
| 1358 | Handle<JSObject> obj = |
| 1359 | Execution::InstantiateObject(object_template, &pending_exception); |
| 1360 | if (pending_exception) { |
| 1361 | ASSERT(Top::has_pending_exception()); |
| 1362 | Top::clear_pending_exception(); |
| 1363 | return false; |
| 1364 | } |
| 1365 | TransferObject(obj, object); |
| 1366 | return true; |
| 1367 | } |
| 1368 | |
| 1369 | |
| 1370 | void Genesis::TransferNamedProperties(Handle<JSObject> from, |
| 1371 | Handle<JSObject> to) { |
| 1372 | if (from->HasFastProperties()) { |
| 1373 | Handle<DescriptorArray> descs = |
| 1374 | Handle<DescriptorArray>(from->map()->instance_descriptors()); |
| 1375 | for (int i = 0; i < descs->number_of_descriptors(); i++) { |
| 1376 | PropertyDetails details = PropertyDetails(descs->GetDetails(i)); |
| 1377 | switch (details.type()) { |
| 1378 | case FIELD: { |
| 1379 | HandleScope inner; |
| 1380 | Handle<String> key = Handle<String>(descs->GetKey(i)); |
| 1381 | int index = descs->GetFieldIndex(i); |
| 1382 | Handle<Object> value = Handle<Object>(from->FastPropertyAt(index)); |
| 1383 | SetProperty(to, key, value, details.attributes()); |
| 1384 | break; |
| 1385 | } |
| 1386 | case CONSTANT_FUNCTION: { |
| 1387 | HandleScope inner; |
| 1388 | Handle<String> key = Handle<String>(descs->GetKey(i)); |
| 1389 | Handle<JSFunction> fun = |
| 1390 | Handle<JSFunction>(descs->GetConstantFunction(i)); |
| 1391 | SetProperty(to, key, fun, details.attributes()); |
| 1392 | break; |
| 1393 | } |
| 1394 | case CALLBACKS: { |
| 1395 | LookupResult result; |
| 1396 | to->LocalLookup(descs->GetKey(i), &result); |
| 1397 | // If the property is already there we skip it |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1398 | if (result.IsProperty()) continue; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1399 | HandleScope inner; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1400 | ASSERT(!to->HasFastProperties()); |
| 1401 | // Add to dictionary. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1402 | Handle<String> key = Handle<String>(descs->GetKey(i)); |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1403 | Handle<Object> callbacks(descs->GetCallbacksObject(i)); |
| 1404 | PropertyDetails d = |
| 1405 | PropertyDetails(details.attributes(), CALLBACKS, details.index()); |
| 1406 | SetNormalizedProperty(to, key, callbacks, d); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1407 | break; |
| 1408 | } |
| 1409 | case MAP_TRANSITION: |
| 1410 | case CONSTANT_TRANSITION: |
| 1411 | case NULL_DESCRIPTOR: |
| 1412 | // Ignore non-properties. |
| 1413 | break; |
| 1414 | case NORMAL: |
| 1415 | // Do not occur since the from object has fast properties. |
| 1416 | case INTERCEPTOR: |
| 1417 | // No element in instance descriptors have interceptor type. |
| 1418 | UNREACHABLE(); |
| 1419 | break; |
| 1420 | } |
| 1421 | } |
| 1422 | } else { |
| 1423 | Handle<StringDictionary> properties = |
| 1424 | Handle<StringDictionary>(from->property_dictionary()); |
| 1425 | int capacity = properties->Capacity(); |
| 1426 | for (int i = 0; i < capacity; i++) { |
| 1427 | Object* raw_key(properties->KeyAt(i)); |
| 1428 | if (properties->IsKey(raw_key)) { |
| 1429 | ASSERT(raw_key->IsString()); |
| 1430 | // If the property is already there we skip it. |
| 1431 | LookupResult result; |
| 1432 | to->LocalLookup(String::cast(raw_key), &result); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1433 | if (result.IsProperty()) continue; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1434 | // Set the property. |
| 1435 | Handle<String> key = Handle<String>(String::cast(raw_key)); |
| 1436 | Handle<Object> value = Handle<Object>(properties->ValueAt(i)); |
| 1437 | if (value->IsJSGlobalPropertyCell()) { |
| 1438 | value = Handle<Object>(JSGlobalPropertyCell::cast(*value)->value()); |
| 1439 | } |
| 1440 | PropertyDetails details = properties->DetailsAt(i); |
| 1441 | SetProperty(to, key, value, details.attributes()); |
| 1442 | } |
| 1443 | } |
| 1444 | } |
| 1445 | } |
| 1446 | |
| 1447 | |
| 1448 | void Genesis::TransferIndexedProperties(Handle<JSObject> from, |
| 1449 | Handle<JSObject> to) { |
| 1450 | // Cloning the elements array is sufficient. |
| 1451 | Handle<FixedArray> from_elements = |
| 1452 | Handle<FixedArray>(FixedArray::cast(from->elements())); |
| 1453 | Handle<FixedArray> to_elements = Factory::CopyFixedArray(from_elements); |
| 1454 | to->set_elements(*to_elements); |
| 1455 | } |
| 1456 | |
| 1457 | |
| 1458 | void Genesis::TransferObject(Handle<JSObject> from, Handle<JSObject> to) { |
| 1459 | HandleScope outer; |
| 1460 | |
| 1461 | ASSERT(!from->IsJSArray()); |
| 1462 | ASSERT(!to->IsJSArray()); |
| 1463 | |
| 1464 | TransferNamedProperties(from, to); |
| 1465 | TransferIndexedProperties(from, to); |
| 1466 | |
| 1467 | // Transfer the prototype (new map is needed). |
| 1468 | Handle<Map> old_to_map = Handle<Map>(to->map()); |
| 1469 | Handle<Map> new_to_map = Factory::CopyMapDropTransitions(old_to_map); |
| 1470 | new_to_map->set_prototype(from->map()->prototype()); |
| 1471 | to->set_map(*new_to_map); |
| 1472 | } |
| 1473 | |
| 1474 | |
| 1475 | void Genesis::MakeFunctionInstancePrototypeWritable() { |
| 1476 | // Make a new function map so all future functions |
| 1477 | // will have settable and enumerable prototype properties. |
| 1478 | HandleScope scope; |
| 1479 | |
| 1480 | Handle<DescriptorArray> function_map_descriptors = |
| 1481 | ComputeFunctionInstanceDescriptor(false); |
| 1482 | Handle<Map> fm = Factory::CopyMapDropDescriptors(Top::function_map()); |
| 1483 | fm->set_instance_descriptors(*function_map_descriptors); |
| 1484 | Top::context()->global_context()->set_function_map(*fm); |
| 1485 | } |
| 1486 | |
| 1487 | |
| 1488 | void Genesis::AddSpecialFunction(Handle<JSObject> prototype, |
| 1489 | const char* name, |
| 1490 | Handle<Code> code) { |
| 1491 | Handle<String> key = Factory::LookupAsciiSymbol(name); |
| 1492 | Handle<Object> value = Handle<Object>(prototype->GetProperty(*key)); |
| 1493 | if (value->IsJSFunction()) { |
| 1494 | Handle<JSFunction> optimized = Factory::NewFunction(key, |
| 1495 | JS_OBJECT_TYPE, |
| 1496 | JSObject::kHeaderSize, |
| 1497 | code, |
| 1498 | false); |
| 1499 | optimized->shared()->DontAdaptArguments(); |
| 1500 | int len = global_context()->special_function_table()->length(); |
| 1501 | Handle<FixedArray> new_array = Factory::NewFixedArray(len + 3); |
| 1502 | for (int index = 0; index < len; index++) { |
| 1503 | new_array->set(index, |
| 1504 | global_context()->special_function_table()->get(index)); |
| 1505 | } |
| 1506 | new_array->set(len+0, *prototype); |
| 1507 | new_array->set(len+1, *value); |
| 1508 | new_array->set(len+2, *optimized); |
| 1509 | global_context()->set_special_function_table(*new_array); |
| 1510 | } |
| 1511 | } |
| 1512 | |
| 1513 | |
| 1514 | void Genesis::BuildSpecialFunctionTable() { |
| 1515 | HandleScope scope; |
| 1516 | Handle<JSObject> global = Handle<JSObject>(global_context()->global()); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1517 | // Add special versions for some Array.prototype functions. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1518 | Handle<JSFunction> function = |
| 1519 | Handle<JSFunction>( |
| 1520 | JSFunction::cast(global->GetProperty(Heap::Array_symbol()))); |
| 1521 | Handle<JSObject> visible_prototype = |
| 1522 | Handle<JSObject>(JSObject::cast(function->prototype())); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1523 | // Remember to put those specializations on the hidden prototype if present. |
| 1524 | Handle<JSObject> special_prototype; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1525 | Handle<Object> superproto(visible_prototype->GetPrototype()); |
| 1526 | if (superproto->IsJSObject() && |
| 1527 | JSObject::cast(*superproto)->map()->is_hidden_prototype()) { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1528 | special_prototype = Handle<JSObject>::cast(superproto); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1529 | } else { |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1530 | special_prototype = visible_prototype; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1531 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1532 | AddSpecialFunction(special_prototype, "pop", |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1533 | Handle<Code>(Builtins::builtin(Builtins::ArrayPop))); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1534 | AddSpecialFunction(special_prototype, "push", |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1535 | Handle<Code>(Builtins::builtin(Builtins::ArrayPush))); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1536 | AddSpecialFunction(special_prototype, "shift", |
| 1537 | Handle<Code>(Builtins::builtin(Builtins::ArrayShift))); |
| 1538 | AddSpecialFunction(special_prototype, "unshift", |
| 1539 | Handle<Code>(Builtins::builtin(Builtins::ArrayUnshift))); |
| 1540 | AddSpecialFunction(special_prototype, "slice", |
| 1541 | Handle<Code>(Builtins::builtin(Builtins::ArraySlice))); |
| 1542 | AddSpecialFunction(special_prototype, "splice", |
| 1543 | Handle<Code>(Builtins::builtin(Builtins::ArraySplice))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1544 | } |
| 1545 | |
| 1546 | |
| 1547 | Genesis::Genesis(Handle<Object> global_object, |
| 1548 | v8::Handle<v8::ObjectTemplate> global_template, |
| 1549 | v8::ExtensionConfiguration* extensions) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1550 | result_ = Handle<Context>::null(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1551 | // If V8 isn't running and cannot be initialized, just return. |
| 1552 | if (!V8::IsRunning() && !V8::Initialize(NULL)) return; |
| 1553 | |
| 1554 | // Before creating the roots we must save the context and restore it |
| 1555 | // on all function exits. |
| 1556 | HandleScope scope; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1557 | SaveContext saved_context; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1558 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1559 | Handle<Context> new_context = Snapshot::NewContextFromSnapshot(); |
| 1560 | if (!new_context.is_null()) { |
| 1561 | global_context_ = |
| 1562 | Handle<Context>::cast(GlobalHandles::Create(*new_context)); |
| 1563 | Top::set_context(*global_context_); |
| 1564 | i::Counters::contexts_created_by_snapshot.Increment(); |
| 1565 | result_ = global_context_; |
| 1566 | JSFunction* empty_function = |
| 1567 | JSFunction::cast(result_->function_map()->prototype()); |
| 1568 | empty_function_ = Handle<JSFunction>(empty_function); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1569 | Handle<GlobalObject> inner_global; |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1570 | Handle<JSGlobalProxy> global_proxy = |
| 1571 | CreateNewGlobals(global_template, |
| 1572 | global_object, |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1573 | &inner_global); |
| 1574 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1575 | HookUpGlobalProxy(inner_global, global_proxy); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame^] | 1576 | HookUpInnerGlobal(inner_global); |
| 1577 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1578 | if (!ConfigureGlobalObjects(global_template)) return; |
| 1579 | } else { |
| 1580 | // We get here if there was no context snapshot. |
| 1581 | CreateRoots(); |
| 1582 | Handle<JSFunction> empty_function = CreateEmptyFunction(); |
| 1583 | Handle<GlobalObject> inner_global; |
| 1584 | Handle<JSGlobalProxy> global_proxy = |
| 1585 | CreateNewGlobals(global_template, global_object, &inner_global); |
| 1586 | HookUpGlobalProxy(inner_global, global_proxy); |
| 1587 | InitializeGlobal(inner_global, empty_function); |
| 1588 | if (!InstallNatives()) return; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1589 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1590 | MakeFunctionInstancePrototypeWritable(); |
| 1591 | BuildSpecialFunctionTable(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1592 | |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1593 | if (!ConfigureGlobalObjects(global_template)) return; |
| 1594 | i::Counters::contexts_created_from_scratch.Increment(); |
| 1595 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1596 | |
| 1597 | result_ = global_context_; |
| 1598 | } |
| 1599 | |
| 1600 | |
| 1601 | // Support for thread preemption. |
| 1602 | |
| 1603 | // Reserve space for statics needing saving and restoring. |
| 1604 | int Bootstrapper::ArchiveSpacePerThread() { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1605 | return BootstrapperActive::ArchiveSpacePerThread(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1606 | } |
| 1607 | |
| 1608 | |
| 1609 | // Archive statics that are thread local. |
| 1610 | char* Bootstrapper::ArchiveState(char* to) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1611 | return BootstrapperActive::ArchiveState(to); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1612 | } |
| 1613 | |
| 1614 | |
| 1615 | // Restore statics that are thread local. |
| 1616 | char* Bootstrapper::RestoreState(char* from) { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1617 | return BootstrapperActive::RestoreState(from); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1618 | } |
| 1619 | |
| 1620 | |
| 1621 | // Called when the top-level V8 mutex is destroyed. |
| 1622 | void Bootstrapper::FreeThreadResources() { |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1623 | ASSERT(!BootstrapperActive::IsActive()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1624 | } |
| 1625 | |
| 1626 | |
| 1627 | // Reserve space for statics needing saving and restoring. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1628 | int BootstrapperActive::ArchiveSpacePerThread() { |
| 1629 | return sizeof(nesting_); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1630 | } |
| 1631 | |
| 1632 | |
| 1633 | // Archive statics that are thread local. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1634 | char* BootstrapperActive::ArchiveState(char* to) { |
| 1635 | *reinterpret_cast<int*>(to) = nesting_; |
| 1636 | nesting_ = 0; |
| 1637 | return to + sizeof(nesting_); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1638 | } |
| 1639 | |
| 1640 | |
| 1641 | // Restore statics that are thread local. |
Andrei Popescu | 3100271 | 2010-02-23 13:46:05 +0000 | [diff] [blame] | 1642 | char* BootstrapperActive::RestoreState(char* from) { |
| 1643 | nesting_ = *reinterpret_cast<int*>(from); |
| 1644 | return from + sizeof(nesting_); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1645 | } |
| 1646 | |
| 1647 | } } // namespace v8::internal |