ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 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 "api.h" |
| 33 | #include "codegen-inl.h" |
| 34 | |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame^] | 35 | #ifdef ARM |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 36 | #include "simulator-arm.h" |
| 37 | #else // ia32 |
| 38 | #include "simulator-ia32.h" |
| 39 | #endif |
| 40 | |
| 41 | namespace v8 { namespace internal { |
| 42 | |
| 43 | |
| 44 | static Handle<Object> Invoke(bool construct, |
| 45 | Handle<JSFunction> func, |
| 46 | Handle<Object> receiver, |
| 47 | int argc, |
| 48 | Object*** args, |
| 49 | bool* has_pending_exception) { |
| 50 | // Make sure we have a real function, not a boilerplate function. |
| 51 | ASSERT(!func->IsBoilerplate()); |
| 52 | |
| 53 | // Entering JavaScript. |
| 54 | VMState state(JS); |
| 55 | |
| 56 | // Guard the stack against too much recursion. |
| 57 | StackGuard guard; |
| 58 | |
| 59 | // Placeholder for return value. |
| 60 | Object* value = reinterpret_cast<Object*>(kZapValue); |
| 61 | |
| 62 | typedef Object* (*JSEntryFunction)( |
| 63 | byte* entry, |
| 64 | Object* function, |
| 65 | Object* receiver, |
| 66 | int argc, |
| 67 | Object*** args); |
| 68 | |
| 69 | Handle<Code> code; |
| 70 | if (construct) { |
| 71 | JSConstructEntryStub stub; |
| 72 | code = stub.GetCode(); |
| 73 | } else { |
| 74 | JSEntryStub stub; |
| 75 | code = stub.GetCode(); |
| 76 | } |
| 77 | |
kasper.lund | 4451067 | 2008-07-25 07:37:58 +0000 | [diff] [blame] | 78 | { |
| 79 | // Save and restore context around invocation and block the |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 80 | // allocation of handles without explicit handle scopes. |
| 81 | SaveContext save; |
| 82 | NoHandleAllocation na; |
| 83 | JSEntryFunction entry = FUNCTION_CAST<JSEntryFunction>(code->entry()); |
| 84 | |
| 85 | // Call the function through the right JS entry stub. |
| 86 | value = CALL_GENERATED_CODE(entry, func->code()->entry(), *func, |
| 87 | *receiver, argc, args); |
| 88 | } |
| 89 | |
| 90 | #ifdef DEBUG |
| 91 | value->Verify(); |
| 92 | #endif |
| 93 | |
| 94 | // Update the pending exception flag and return the value. |
| 95 | *has_pending_exception = value->IsException(); |
| 96 | ASSERT(*has_pending_exception == Top::has_pending_exception()); |
kasperl@chromium.org | 5a8ca6c | 2008-10-23 13:57:19 +0000 | [diff] [blame] | 97 | if (*has_pending_exception) { |
| 98 | Top::setup_external_caught(); |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 99 | // If the pending exception is OutOfMemoryException set out_of_memory in |
| 100 | // the global context. Note: We have to mark the global context here |
| 101 | // since the GenerateThrowOutOfMemory stub cannot make a RuntimeCall to |
| 102 | // set it. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 103 | if (Top::pending_exception() == Failure::OutOfMemoryException()) { |
| 104 | Top::context()->mark_out_of_memory(); |
| 105 | } |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 106 | return Handle<Object>(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | return Handle<Object>(value); |
| 110 | } |
| 111 | |
| 112 | |
| 113 | Handle<Object> Execution::Call(Handle<JSFunction> func, |
| 114 | Handle<Object> receiver, |
| 115 | int argc, |
| 116 | Object*** args, |
| 117 | bool* pending_exception) { |
| 118 | return Invoke(false, func, receiver, argc, args, pending_exception); |
| 119 | } |
| 120 | |
| 121 | |
| 122 | Handle<Object> Execution::New(Handle<JSFunction> func, int argc, |
| 123 | Object*** args, bool* pending_exception) { |
| 124 | return Invoke(true, func, Top::global(), argc, args, pending_exception); |
| 125 | } |
| 126 | |
| 127 | |
| 128 | Handle<Object> Execution::TryCall(Handle<JSFunction> func, |
| 129 | Handle<Object> receiver, |
| 130 | int argc, |
| 131 | Object*** args, |
| 132 | bool* caught_exception) { |
| 133 | // Enter a try-block while executing the JavaScript code. To avoid |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 134 | // duplicate error printing it must be non-verbose. Also, to avoid |
| 135 | // creating message objects during stack overflow we shouldn't |
| 136 | // capture messages. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 137 | v8::TryCatch catcher; |
| 138 | catcher.SetVerbose(false); |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 139 | catcher.SetCaptureMessage(false); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 140 | |
| 141 | Handle<Object> result = Invoke(false, func, receiver, argc, args, |
| 142 | caught_exception); |
| 143 | |
| 144 | if (*caught_exception) { |
| 145 | ASSERT(catcher.HasCaught()); |
| 146 | ASSERT(Top::has_pending_exception()); |
| 147 | ASSERT(Top::external_caught_exception()); |
| 148 | Top::optional_reschedule_exception(true); |
| 149 | result = v8::Utils::OpenHandle(*catcher.Exception()); |
| 150 | } |
| 151 | |
| 152 | ASSERT(!Top::has_pending_exception()); |
| 153 | ASSERT(!Top::external_caught_exception()); |
| 154 | return result; |
| 155 | } |
| 156 | |
| 157 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 158 | Handle<Object> Execution::GetFunctionDelegate(Handle<Object> object) { |
| 159 | ASSERT(!object->IsJSFunction()); |
| 160 | |
| 161 | // If you return a function from here, it will be called when an |
| 162 | // attempt is made to call the given object as a function. |
| 163 | |
| 164 | // The regular expression code here is really meant more as an |
| 165 | // example than anything else. KJS does not support calling regular |
| 166 | // expressions as functions, but SpiderMonkey does. |
| 167 | if (FLAG_call_regexp) { |
| 168 | bool is_regexp = |
| 169 | object->IsHeapObject() && |
| 170 | (HeapObject::cast(*object)->map()->constructor() == |
| 171 | *Top::regexp_function()); |
| 172 | |
| 173 | if (is_regexp) { |
| 174 | Handle<String> exec = Factory::exec_symbol(); |
| 175 | return Handle<Object>(object->GetProperty(*exec)); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | // Objects created through the API can have an instance-call handler |
| 180 | // that should be used when calling the object as a function. |
| 181 | if (object->IsHeapObject() && |
| 182 | HeapObject::cast(*object)->map()->has_instance_call_handler()) { |
| 183 | return Handle<JSFunction>( |
| 184 | Top::global_context()->call_as_function_delegate()); |
| 185 | } |
| 186 | |
| 187 | return Factory::undefined_value(); |
| 188 | } |
| 189 | |
| 190 | |
| 191 | // Static state for stack guards. |
| 192 | StackGuard::ThreadLocal StackGuard::thread_local_; |
| 193 | |
| 194 | |
| 195 | StackGuard::StackGuard() { |
| 196 | ExecutionAccess access; |
| 197 | if (thread_local_.nesting_++ == 0 && |
| 198 | thread_local_.jslimit_ != kInterruptLimit) { |
| 199 | // NOTE: We assume that the stack grows towards lower addresses. |
| 200 | ASSERT(thread_local_.jslimit_ == kIllegalLimit); |
| 201 | ASSERT(thread_local_.climit_ == kIllegalLimit); |
| 202 | |
| 203 | thread_local_.initial_jslimit_ = thread_local_.jslimit_ = |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 204 | GENERATED_CODE_STACK_LIMIT(kLimitSize); |
v8.team.kasperl | 727e995 | 2008-09-02 14:56:44 +0000 | [diff] [blame] | 205 | // NOTE: The check for overflow is not safe as there is no guarantee that |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 206 | // the running thread has its stack in all memory up to address 0x00000000. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 207 | thread_local_.initial_climit_ = thread_local_.climit_ = |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 208 | reinterpret_cast<uintptr_t>(this) >= kLimitSize ? |
| 209 | reinterpret_cast<uintptr_t>(this) - kLimitSize : 0; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 210 | |
| 211 | if (thread_local_.interrupt_flags_ != 0) { |
| 212 | set_limits(kInterruptLimit, access); |
| 213 | } |
| 214 | } |
| 215 | // make sure we have proper limits setup |
| 216 | ASSERT(thread_local_.jslimit_ != kIllegalLimit && |
| 217 | thread_local_.climit_ != kIllegalLimit); |
| 218 | } |
| 219 | |
| 220 | |
| 221 | StackGuard::~StackGuard() { |
| 222 | ExecutionAccess access; |
| 223 | if (--thread_local_.nesting_ == 0) { |
| 224 | set_limits(kIllegalLimit, access); |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | |
| 229 | bool StackGuard::IsStackOverflow() { |
| 230 | ExecutionAccess access; |
| 231 | return (thread_local_.jslimit_ != kInterruptLimit && |
| 232 | thread_local_.climit_ != kInterruptLimit); |
| 233 | } |
| 234 | |
| 235 | |
| 236 | void StackGuard::EnableInterrupts() { |
| 237 | ExecutionAccess access; |
| 238 | if (IsSet(access)) { |
| 239 | set_limits(kInterruptLimit, access); |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | |
| 244 | void StackGuard::SetStackLimit(uintptr_t limit) { |
| 245 | ExecutionAccess access; |
| 246 | // If the current limits are special (eg due to a pending interrupt) then |
| 247 | // leave them alone. |
| 248 | if (thread_local_.jslimit_ == thread_local_.initial_jslimit_) { |
| 249 | thread_local_.jslimit_ = limit; |
| 250 | } |
| 251 | if (thread_local_.climit_ == thread_local_.initial_climit_) { |
| 252 | thread_local_.climit_ = limit; |
| 253 | } |
| 254 | thread_local_.initial_climit_ = limit; |
| 255 | thread_local_.initial_jslimit_ = limit; |
| 256 | } |
| 257 | |
| 258 | |
| 259 | void StackGuard::DisableInterrupts() { |
| 260 | ExecutionAccess access; |
| 261 | reset_limits(access); |
| 262 | } |
| 263 | |
| 264 | |
| 265 | bool StackGuard::IsSet(const ExecutionAccess& lock) { |
| 266 | return thread_local_.interrupt_flags_ != 0; |
| 267 | } |
| 268 | |
| 269 | |
| 270 | bool StackGuard::IsInterrupted() { |
| 271 | ExecutionAccess access; |
| 272 | return thread_local_.interrupt_flags_ & INTERRUPT; |
| 273 | } |
| 274 | |
| 275 | |
| 276 | void StackGuard::Interrupt() { |
| 277 | ExecutionAccess access; |
| 278 | thread_local_.interrupt_flags_ |= INTERRUPT; |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 279 | set_limits(kInterruptLimit, access); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 280 | } |
| 281 | |
| 282 | |
| 283 | bool StackGuard::IsPreempted() { |
| 284 | ExecutionAccess access; |
| 285 | return thread_local_.interrupt_flags_ & PREEMPT; |
| 286 | } |
| 287 | |
| 288 | |
| 289 | void StackGuard::Preempt() { |
| 290 | ExecutionAccess access; |
| 291 | thread_local_.interrupt_flags_ |= PREEMPT; |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 292 | set_limits(kInterruptLimit, access); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | |
| 296 | bool StackGuard::IsDebugBreak() { |
| 297 | ExecutionAccess access; |
| 298 | return thread_local_.interrupt_flags_ & DEBUGBREAK; |
| 299 | } |
| 300 | |
kasper.lund | 4451067 | 2008-07-25 07:37:58 +0000 | [diff] [blame] | 301 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 302 | void StackGuard::DebugBreak() { |
| 303 | ExecutionAccess access; |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 304 | thread_local_.interrupt_flags_ |= DEBUGBREAK; |
| 305 | set_limits(kInterruptLimit, access); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 306 | } |
| 307 | |
| 308 | |
| 309 | void StackGuard::Continue(InterruptFlag after_what) { |
| 310 | ExecutionAccess access; |
| 311 | thread_local_.interrupt_flags_ &= ~static_cast<int>(after_what); |
| 312 | if (thread_local_.interrupt_flags_ == 0) { |
| 313 | reset_limits(access); |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | |
| 318 | int StackGuard::ArchiveSpacePerThread() { |
| 319 | return sizeof(ThreadLocal); |
| 320 | } |
| 321 | |
| 322 | |
| 323 | char* StackGuard::ArchiveStackGuard(char* to) { |
| 324 | ExecutionAccess access; |
| 325 | memcpy(to, reinterpret_cast<char*>(&thread_local_), sizeof(ThreadLocal)); |
| 326 | ThreadLocal blank; |
| 327 | thread_local_ = blank; |
| 328 | return to + sizeof(ThreadLocal); |
| 329 | } |
| 330 | |
| 331 | |
| 332 | char* StackGuard::RestoreStackGuard(char* from) { |
| 333 | ExecutionAccess access; |
| 334 | memcpy(reinterpret_cast<char*>(&thread_local_), from, sizeof(ThreadLocal)); |
| 335 | return from + sizeof(ThreadLocal); |
| 336 | } |
| 337 | |
| 338 | |
| 339 | // --- C a l l s t o n a t i v e s --- |
| 340 | |
| 341 | #define RETURN_NATIVE_CALL(name, argc, argv, has_pending_exception) \ |
| 342 | do { \ |
| 343 | Object** args[argc] = argv; \ |
| 344 | ASSERT(has_pending_exception != NULL); \ |
| 345 | return Call(Top::name##_fun(), Top::builtins(), argc, args, \ |
| 346 | has_pending_exception); \ |
| 347 | } while (false) |
| 348 | |
| 349 | |
| 350 | Handle<Object> Execution::ToBoolean(Handle<Object> obj) { |
| 351 | // See the similar code in runtime.js:ToBoolean. |
| 352 | if (obj->IsBoolean()) return obj; |
| 353 | bool result = true; |
| 354 | if (obj->IsString()) { |
| 355 | result = Handle<String>::cast(obj)->length() != 0; |
| 356 | } else if (obj->IsNull() || obj->IsUndefined()) { |
| 357 | result = false; |
| 358 | } else if (obj->IsNumber()) { |
| 359 | double value = obj->Number(); |
| 360 | result = !((value == 0) || isnan(value)); |
| 361 | } |
| 362 | return Handle<Object>(Heap::ToBoolean(result)); |
| 363 | } |
| 364 | |
| 365 | |
| 366 | Handle<Object> Execution::ToNumber(Handle<Object> obj, bool* exc) { |
| 367 | RETURN_NATIVE_CALL(to_number, 1, { obj.location() }, exc); |
| 368 | } |
| 369 | |
| 370 | |
| 371 | Handle<Object> Execution::ToString(Handle<Object> obj, bool* exc) { |
| 372 | RETURN_NATIVE_CALL(to_string, 1, { obj.location() }, exc); |
| 373 | } |
| 374 | |
| 375 | |
| 376 | Handle<Object> Execution::ToDetailString(Handle<Object> obj, bool* exc) { |
| 377 | RETURN_NATIVE_CALL(to_detail_string, 1, { obj.location() }, exc); |
| 378 | } |
| 379 | |
| 380 | |
| 381 | Handle<Object> Execution::ToObject(Handle<Object> obj, bool* exc) { |
| 382 | if (obj->IsJSObject()) return obj; |
| 383 | RETURN_NATIVE_CALL(to_object, 1, { obj.location() }, exc); |
| 384 | } |
| 385 | |
| 386 | |
| 387 | Handle<Object> Execution::ToInteger(Handle<Object> obj, bool* exc) { |
| 388 | RETURN_NATIVE_CALL(to_integer, 1, { obj.location() }, exc); |
| 389 | } |
| 390 | |
| 391 | |
| 392 | Handle<Object> Execution::ToUint32(Handle<Object> obj, bool* exc) { |
| 393 | RETURN_NATIVE_CALL(to_uint32, 1, { obj.location() }, exc); |
| 394 | } |
| 395 | |
| 396 | |
| 397 | Handle<Object> Execution::ToInt32(Handle<Object> obj, bool* exc) { |
| 398 | RETURN_NATIVE_CALL(to_int32, 1, { obj.location() }, exc); |
| 399 | } |
| 400 | |
| 401 | |
| 402 | Handle<Object> Execution::NewDate(double time, bool* exc) { |
| 403 | Handle<Object> time_obj = Factory::NewNumber(time); |
| 404 | RETURN_NATIVE_CALL(create_date, 1, { time_obj.location() }, exc); |
| 405 | } |
| 406 | |
| 407 | |
| 408 | #undef RETURN_NATIVE_CALL |
| 409 | |
| 410 | |
| 411 | Handle<Object> Execution::CharAt(Handle<String> string, uint32_t index) { |
| 412 | int int_index = static_cast<int>(index); |
| 413 | if (int_index < 0 || int_index >= string->length()) { |
| 414 | return Factory::undefined_value(); |
| 415 | } |
| 416 | |
| 417 | Handle<Object> char_at = |
| 418 | GetProperty(Top::builtins(), Factory::char_at_symbol()); |
| 419 | if (!char_at->IsJSFunction()) { |
| 420 | return Factory::undefined_value(); |
| 421 | } |
| 422 | |
| 423 | bool caught_exception; |
| 424 | Handle<Object> index_object = Factory::NewNumberFromInt(int_index); |
| 425 | Object** index_arg[] = { index_object.location() }; |
| 426 | Handle<Object> result = TryCall(Handle<JSFunction>::cast(char_at), |
| 427 | string, |
| 428 | ARRAY_SIZE(index_arg), |
| 429 | index_arg, |
| 430 | &caught_exception); |
| 431 | if (caught_exception) { |
| 432 | return Factory::undefined_value(); |
| 433 | } |
| 434 | return result; |
| 435 | } |
| 436 | |
| 437 | |
| 438 | Handle<JSFunction> Execution::InstantiateFunction( |
| 439 | Handle<FunctionTemplateInfo> data, bool* exc) { |
| 440 | // Fast case: see if the function has already been instantiated |
| 441 | int serial_number = Smi::cast(data->serial_number())->value(); |
| 442 | Object* elm = |
| 443 | Top::global_context()->function_cache()->GetElement(serial_number); |
| 444 | if (!elm->IsUndefined()) return Handle<JSFunction>(JSFunction::cast(elm)); |
| 445 | // The function has not yet been instantiated in this context; do it. |
| 446 | Object** args[1] = { Handle<Object>::cast(data).location() }; |
| 447 | Handle<Object> result = |
| 448 | Call(Top::instantiate_fun(), Top::builtins(), 1, args, exc); |
| 449 | if (*exc) return Handle<JSFunction>::null(); |
| 450 | return Handle<JSFunction>::cast(result); |
| 451 | } |
| 452 | |
| 453 | |
| 454 | Handle<JSObject> Execution::InstantiateObject(Handle<ObjectTemplateInfo> data, |
| 455 | bool* exc) { |
| 456 | if (data->property_list()->IsUndefined() && |
| 457 | !data->constructor()->IsUndefined()) { |
| 458 | Object* result; |
| 459 | { |
| 460 | HandleScope scope; |
| 461 | Handle<FunctionTemplateInfo> cons_template = |
| 462 | Handle<FunctionTemplateInfo>( |
| 463 | FunctionTemplateInfo::cast(data->constructor())); |
| 464 | Handle<JSFunction> cons = InstantiateFunction(cons_template, exc); |
| 465 | if (*exc) return Handle<JSObject>::null(); |
| 466 | Handle<Object> value = New(cons, 0, NULL, exc); |
| 467 | if (*exc) return Handle<JSObject>::null(); |
| 468 | result = *value; |
| 469 | } |
| 470 | ASSERT(!*exc); |
| 471 | return Handle<JSObject>(JSObject::cast(result)); |
| 472 | } else { |
| 473 | Object** args[1] = { Handle<Object>::cast(data).location() }; |
| 474 | Handle<Object> result = |
| 475 | Call(Top::instantiate_fun(), Top::builtins(), 1, args, exc); |
| 476 | if (*exc) return Handle<JSObject>::null(); |
| 477 | return Handle<JSObject>::cast(result); |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | |
| 482 | void Execution::ConfigureInstance(Handle<Object> instance, |
| 483 | Handle<Object> instance_template, |
| 484 | bool* exc) { |
| 485 | Object** args[2] = { instance.location(), instance_template.location() }; |
| 486 | Execution::Call(Top::configure_instance_fun(), Top::builtins(), 2, args, exc); |
| 487 | } |
| 488 | |
| 489 | |
| 490 | Handle<String> Execution::GetStackTraceLine(Handle<Object> recv, |
| 491 | Handle<JSFunction> fun, |
| 492 | Handle<Object> pos, |
| 493 | Handle<Object> is_global) { |
| 494 | const int argc = 4; |
| 495 | Object** args[argc] = { recv.location(), |
| 496 | Handle<Object>::cast(fun).location(), |
| 497 | pos.location(), |
| 498 | is_global.location() }; |
| 499 | bool caught_exception = false; |
| 500 | Handle<Object> result = TryCall(Top::get_stack_trace_line_fun(), |
| 501 | Top::builtins(), argc, args, |
| 502 | &caught_exception); |
| 503 | if (caught_exception || !result->IsString()) return Factory::empty_symbol(); |
| 504 | return Handle<String>::cast(result); |
| 505 | } |
| 506 | |
| 507 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 508 | // --- G C E x t e n s i o n --- |
| 509 | |
| 510 | const char* GCExtension::kSource = "native function gc();"; |
| 511 | |
| 512 | |
| 513 | v8::Handle<v8::FunctionTemplate> GCExtension::GetNativeFunction( |
| 514 | v8::Handle<v8::String> str) { |
| 515 | return v8::FunctionTemplate::New(GCExtension::GC); |
| 516 | } |
| 517 | |
| 518 | |
| 519 | v8::Handle<v8::Value> GCExtension::GC(const v8::Arguments& args) { |
| 520 | // All allocation spaces other than NEW_SPACE have the same effect. |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 521 | Heap::CollectGarbage(0, OLD_DATA_SPACE); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 522 | return v8::Undefined(); |
| 523 | } |
| 524 | |
| 525 | |
| 526 | static GCExtension kGCExtension; |
| 527 | v8::DeclareExtension kGCExtensionDeclaration(&kGCExtension); |
| 528 | |
| 529 | } } // namespace v8::internal |