Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 4 | |
| 5 | #include <stdlib.h> |
| 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 7 | #include "src/v8.h" |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 8 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 9 | #include "src/ast.h" |
| 10 | #include "src/base/platform/platform.h" |
| 11 | #include "src/base/sys-info.h" |
| 12 | #include "src/base/utils/random-number-generator.h" |
| 13 | #include "src/bootstrapper.h" |
| 14 | #include "src/codegen.h" |
| 15 | #include "src/compilation-cache.h" |
| 16 | #include "src/cpu-profiler.h" |
| 17 | #include "src/debug.h" |
| 18 | #include "src/deoptimizer.h" |
| 19 | #include "src/heap/spaces.h" |
| 20 | #include "src/heap/sweeper-thread.h" |
| 21 | #include "src/heap-profiler.h" |
| 22 | #include "src/hydrogen.h" |
| 23 | #include "src/ic/stub-cache.h" |
| 24 | #include "src/isolate-inl.h" |
| 25 | #include "src/lithium-allocator.h" |
| 26 | #include "src/log.h" |
| 27 | #include "src/messages.h" |
| 28 | #include "src/prototype.h" |
| 29 | #include "src/regexp-stack.h" |
| 30 | #include "src/runtime-profiler.h" |
| 31 | #include "src/sampler.h" |
| 32 | #include "src/scopeinfo.h" |
| 33 | #include "src/serialize.h" |
| 34 | #include "src/simulator.h" |
| 35 | #include "src/version.h" |
| 36 | #include "src/vm-state-inl.h" |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 37 | |
| 38 | |
| 39 | namespace v8 { |
| 40 | namespace internal { |
| 41 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 42 | base::Atomic32 ThreadId::highest_thread_id_ = 0; |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 43 | |
| 44 | int ThreadId::AllocateThreadId() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 45 | int new_id = base::NoBarrier_AtomicIncrement(&highest_thread_id_, 1); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 46 | return new_id; |
| 47 | } |
| 48 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 49 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 50 | int ThreadId::GetCurrentThreadId() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 51 | int thread_id = base::Thread::GetThreadLocalInt(Isolate::thread_id_key_); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 52 | if (thread_id == 0) { |
| 53 | thread_id = AllocateThreadId(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 54 | base::Thread::SetThreadLocalInt(Isolate::thread_id_key_, thread_id); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 55 | } |
| 56 | return thread_id; |
| 57 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 58 | |
Ben Murdoch | 6d7cb00 | 2011-08-04 19:25:22 +0100 | [diff] [blame] | 59 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 60 | ThreadLocalTop::ThreadLocalTop() { |
| 61 | InitializeInternal(); |
| 62 | } |
| 63 | |
| 64 | |
| 65 | void ThreadLocalTop::InitializeInternal() { |
| 66 | c_entry_fp_ = 0; |
| 67 | handler_ = 0; |
| 68 | #ifdef USE_SIMULATOR |
| 69 | simulator_ = NULL; |
| 70 | #endif |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 71 | js_entry_sp_ = NULL; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 72 | external_callback_scope_ = NULL; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 73 | current_vm_state_ = EXTERNAL; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 74 | try_catch_handler_ = NULL; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 75 | context_ = NULL; |
| 76 | thread_id_ = ThreadId::Invalid(); |
| 77 | external_caught_exception_ = false; |
| 78 | failed_access_check_callback_ = NULL; |
| 79 | save_context_ = NULL; |
| 80 | catcher_ = NULL; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 81 | top_lookup_result_ = NULL; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 82 | promise_on_stack_ = NULL; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 83 | |
| 84 | // These members are re-initialized later after deserialization |
| 85 | // is complete. |
| 86 | pending_exception_ = NULL; |
| 87 | has_pending_message_ = false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 88 | rethrowing_message_ = false; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 89 | pending_message_obj_ = NULL; |
| 90 | pending_message_script_ = NULL; |
| 91 | scheduled_exception_ = NULL; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | |
| 95 | void ThreadLocalTop::Initialize() { |
| 96 | InitializeInternal(); |
| 97 | #ifdef USE_SIMULATOR |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 98 | simulator_ = Simulator::current(isolate_); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 99 | #endif |
| 100 | thread_id_ = ThreadId::Current(); |
| 101 | } |
| 102 | |
| 103 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 104 | void ThreadLocalTop::Free() { |
| 105 | // Match unmatched PopPromise calls. |
| 106 | while (promise_on_stack_) isolate_->PopPromise(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 110 | base::Thread::LocalStorageKey Isolate::isolate_key_; |
| 111 | base::Thread::LocalStorageKey Isolate::thread_id_key_; |
| 112 | base::Thread::LocalStorageKey Isolate::per_isolate_thread_data_key_; |
| 113 | #ifdef DEBUG |
| 114 | base::Thread::LocalStorageKey PerThreadAssertScopeBase::thread_local_key; |
| 115 | #endif // DEBUG |
| 116 | base::LazyMutex Isolate::thread_data_table_mutex_ = LAZY_MUTEX_INITIALIZER; |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 117 | Isolate::ThreadDataTable* Isolate::thread_data_table_ = NULL; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 118 | base::Atomic32 Isolate::isolate_counter_ = 0; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 119 | |
| 120 | Isolate::PerIsolateThreadData* |
| 121 | Isolate::FindOrAllocatePerThreadDataForThisThread() { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 122 | ThreadId thread_id = ThreadId::Current(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 123 | PerIsolateThreadData* per_thread = NULL; |
| 124 | { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 125 | base::LockGuard<base::Mutex> lock_guard(thread_data_table_mutex_.Pointer()); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 126 | per_thread = thread_data_table_->Lookup(this, thread_id); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 127 | if (per_thread == NULL) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 128 | per_thread = new PerIsolateThreadData(this, thread_id); |
| 129 | thread_data_table_->Insert(per_thread); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 130 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 131 | DCHECK(thread_data_table_->Lookup(this, thread_id) == per_thread); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 132 | } |
| 133 | return per_thread; |
| 134 | } |
| 135 | |
| 136 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 137 | Isolate::PerIsolateThreadData* Isolate::FindPerThreadDataForThisThread() { |
| 138 | ThreadId thread_id = ThreadId::Current(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 139 | return FindPerThreadDataForThread(thread_id); |
| 140 | } |
| 141 | |
| 142 | |
| 143 | Isolate::PerIsolateThreadData* Isolate::FindPerThreadDataForThread( |
| 144 | ThreadId thread_id) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 145 | PerIsolateThreadData* per_thread = NULL; |
| 146 | { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 147 | base::LockGuard<base::Mutex> lock_guard(thread_data_table_mutex_.Pointer()); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 148 | per_thread = thread_data_table_->Lookup(this, thread_id); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 149 | } |
| 150 | return per_thread; |
| 151 | } |
| 152 | |
| 153 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 154 | void Isolate::InitializeOncePerProcess() { |
| 155 | base::LockGuard<base::Mutex> lock_guard(thread_data_table_mutex_.Pointer()); |
| 156 | CHECK(thread_data_table_ == NULL); |
| 157 | isolate_key_ = base::Thread::CreateThreadLocalKey(); |
| 158 | thread_id_key_ = base::Thread::CreateThreadLocalKey(); |
| 159 | per_isolate_thread_data_key_ = base::Thread::CreateThreadLocalKey(); |
| 160 | #ifdef DEBUG |
| 161 | PerThreadAssertScopeBase::thread_local_key = |
| 162 | base::Thread::CreateThreadLocalKey(); |
| 163 | #endif // DEBUG |
| 164 | thread_data_table_ = new Isolate::ThreadDataTable(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 165 | } |
| 166 | |
| 167 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 168 | Address Isolate::get_address_from_id(Isolate::AddressId id) { |
| 169 | return isolate_addresses_[id]; |
| 170 | } |
| 171 | |
| 172 | |
| 173 | char* Isolate::Iterate(ObjectVisitor* v, char* thread_storage) { |
| 174 | ThreadLocalTop* thread = reinterpret_cast<ThreadLocalTop*>(thread_storage); |
| 175 | Iterate(v, thread); |
| 176 | return thread_storage + sizeof(ThreadLocalTop); |
| 177 | } |
| 178 | |
| 179 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 180 | void Isolate::IterateThread(ThreadVisitor* v, char* t) { |
| 181 | ThreadLocalTop* thread = reinterpret_cast<ThreadLocalTop*>(t); |
| 182 | v->VisitThread(this, thread); |
| 183 | } |
| 184 | |
| 185 | |
| 186 | void Isolate::Iterate(ObjectVisitor* v, ThreadLocalTop* thread) { |
| 187 | // Visit the roots from the top for a given thread. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 188 | v->VisitPointer(&thread->pending_exception_); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 189 | v->VisitPointer(&(thread->pending_message_obj_)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 190 | v->VisitPointer(bit_cast<Object**>(&(thread->pending_message_script_))); |
| 191 | v->VisitPointer(bit_cast<Object**>(&(thread->context_))); |
| 192 | v->VisitPointer(&thread->scheduled_exception_); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 193 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 194 | for (v8::TryCatch* block = thread->try_catch_handler(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 195 | block != NULL; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 196 | block = block->next_) { |
| 197 | v->VisitPointer(bit_cast<Object**>(&(block->exception_))); |
| 198 | v->VisitPointer(bit_cast<Object**>(&(block->message_obj_))); |
| 199 | v->VisitPointer(bit_cast<Object**>(&(block->message_script_))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | // Iterate over pointers on native execution stack. |
| 203 | for (StackFrameIterator it(this, thread); !it.done(); it.Advance()) { |
| 204 | it.frame()->Iterate(v); |
| 205 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 206 | |
| 207 | // Iterate pointers in live lookup results. |
| 208 | thread->top_lookup_result_->Iterate(v); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | |
| 212 | void Isolate::Iterate(ObjectVisitor* v) { |
| 213 | ThreadLocalTop* current_t = thread_local_top(); |
| 214 | Iterate(v, current_t); |
| 215 | } |
| 216 | |
| 217 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 218 | void Isolate::IterateDeferredHandles(ObjectVisitor* visitor) { |
| 219 | for (DeferredHandles* deferred = deferred_handles_head_; |
| 220 | deferred != NULL; |
| 221 | deferred = deferred->next_) { |
| 222 | deferred->Iterate(visitor); |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | |
| 227 | #ifdef DEBUG |
| 228 | bool Isolate::IsDeferredHandle(Object** handle) { |
| 229 | // Each DeferredHandles instance keeps the handles to one job in the |
| 230 | // concurrent recompilation queue, containing a list of blocks. Each block |
| 231 | // contains kHandleBlockSize handles except for the first block, which may |
| 232 | // not be fully filled. |
| 233 | // We iterate through all the blocks to see whether the argument handle |
| 234 | // belongs to one of the blocks. If so, it is deferred. |
| 235 | for (DeferredHandles* deferred = deferred_handles_head_; |
| 236 | deferred != NULL; |
| 237 | deferred = deferred->next_) { |
| 238 | List<Object**>* blocks = &deferred->blocks_; |
| 239 | for (int i = 0; i < blocks->length(); i++) { |
| 240 | Object** block_limit = (i == 0) ? deferred->first_block_limit_ |
| 241 | : blocks->at(i) + kHandleBlockSize; |
| 242 | if (blocks->at(i) <= handle && handle < block_limit) return true; |
| 243 | } |
| 244 | } |
| 245 | return false; |
| 246 | } |
| 247 | #endif // DEBUG |
| 248 | |
| 249 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 250 | void Isolate::RegisterTryCatchHandler(v8::TryCatch* that) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 251 | thread_local_top()->set_try_catch_handler(that); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | |
| 255 | void Isolate::UnregisterTryCatchHandler(v8::TryCatch* that) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 256 | DCHECK(thread_local_top()->try_catch_handler() == that); |
| 257 | thread_local_top()->set_try_catch_handler(that->next_); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 258 | thread_local_top()->catcher_ = NULL; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | |
| 262 | Handle<String> Isolate::StackTraceString() { |
| 263 | if (stack_trace_nesting_level_ == 0) { |
| 264 | stack_trace_nesting_level_++; |
| 265 | HeapStringAllocator allocator; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 266 | StringStream::ClearMentionedObjectCache(this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 267 | StringStream accumulator(&allocator); |
| 268 | incomplete_message_ = &accumulator; |
| 269 | PrintStack(&accumulator); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 270 | Handle<String> stack_trace = accumulator.ToString(this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 271 | incomplete_message_ = NULL; |
| 272 | stack_trace_nesting_level_ = 0; |
| 273 | return stack_trace; |
| 274 | } else if (stack_trace_nesting_level_ == 1) { |
| 275 | stack_trace_nesting_level_++; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 276 | base::OS::PrintError( |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 277 | "\n\nAttempt to print stack while printing stack (double fault)\n"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 278 | base::OS::PrintError( |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 279 | "If you are lucky you may find a partial stack dump on stdout.\n\n"); |
| 280 | incomplete_message_->OutputToStdOut(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 281 | return factory()->empty_string(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 282 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 283 | base::OS::Abort(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 284 | // Unreachable |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 285 | return factory()->empty_string(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 286 | } |
| 287 | } |
| 288 | |
| 289 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 290 | void Isolate::PushStackTraceAndDie(unsigned int magic, |
| 291 | Object* object, |
| 292 | Map* map, |
| 293 | unsigned int magic2) { |
| 294 | const int kMaxStackTraceSize = 8192; |
| 295 | Handle<String> trace = StackTraceString(); |
| 296 | uint8_t buffer[kMaxStackTraceSize]; |
| 297 | int length = Min(kMaxStackTraceSize - 1, trace->length()); |
| 298 | String::WriteToFlat(*trace, buffer, 0, length); |
| 299 | buffer[length] = '\0'; |
| 300 | // TODO(dcarney): convert buffer to utf8? |
| 301 | base::OS::PrintError("Stacktrace (%x-%x) %p %p: %s\n", magic, magic2, |
| 302 | static_cast<void*>(object), static_cast<void*>(map), |
| 303 | reinterpret_cast<char*>(buffer)); |
| 304 | base::OS::Abort(); |
| 305 | } |
| 306 | |
| 307 | |
| 308 | // Determines whether the given stack frame should be displayed in |
| 309 | // a stack trace. The caller is the error constructor that asked |
| 310 | // for the stack trace to be collected. The first time a construct |
| 311 | // call to this function is encountered it is skipped. The seen_caller |
| 312 | // in/out parameter is used to remember if the caller has been seen |
| 313 | // yet. |
| 314 | static bool IsVisibleInStackTrace(JSFunction* fun, |
| 315 | Object* caller, |
| 316 | Object* receiver, |
| 317 | bool* seen_caller) { |
| 318 | if ((fun == caller) && !(*seen_caller)) { |
| 319 | *seen_caller = true; |
| 320 | return false; |
| 321 | } |
| 322 | // Skip all frames until we've seen the caller. |
| 323 | if (!(*seen_caller)) return false; |
| 324 | // Also, skip non-visible built-in functions and any call with the builtins |
| 325 | // object as receiver, so as to not reveal either the builtins object or |
| 326 | // an internal function. |
| 327 | // The --builtins-in-stack-traces command line flag allows including |
| 328 | // internal call sites in the stack trace for debugging purposes. |
| 329 | if (!FLAG_builtins_in_stack_traces) { |
| 330 | if (receiver->IsJSBuiltinsObject()) return false; |
| 331 | if (fun->IsBuiltin()) { |
| 332 | return fun->shared()->native(); |
| 333 | } else if (fun->IsFromNativeScript() || fun->IsFromExtensionScript()) { |
| 334 | return false; |
| 335 | } |
| 336 | } |
| 337 | return true; |
| 338 | } |
| 339 | |
| 340 | |
| 341 | Handle<Object> Isolate::CaptureSimpleStackTrace(Handle<JSObject> error_object, |
| 342 | Handle<Object> caller) { |
| 343 | // Get stack trace limit. |
| 344 | Handle<Object> error = Object::GetProperty( |
| 345 | this, js_builtins_object(), "$Error").ToHandleChecked(); |
| 346 | if (!error->IsJSObject()) return factory()->undefined_value(); |
| 347 | |
| 348 | Handle<String> stackTraceLimit = |
| 349 | factory()->InternalizeUtf8String("stackTraceLimit"); |
| 350 | DCHECK(!stackTraceLimit.is_null()); |
| 351 | Handle<Object> stack_trace_limit = |
| 352 | JSObject::GetDataProperty(Handle<JSObject>::cast(error), |
| 353 | stackTraceLimit); |
| 354 | if (!stack_trace_limit->IsNumber()) return factory()->undefined_value(); |
| 355 | int limit = FastD2IChecked(stack_trace_limit->Number()); |
| 356 | limit = Max(limit, 0); // Ensure that limit is not negative. |
| 357 | |
| 358 | int initial_size = Min(limit, 10); |
| 359 | Handle<FixedArray> elements = |
| 360 | factory()->NewFixedArrayWithHoles(initial_size * 4 + 1); |
| 361 | |
| 362 | // If the caller parameter is a function we skip frames until we're |
| 363 | // under it before starting to collect. |
| 364 | bool seen_caller = !caller->IsJSFunction(); |
| 365 | // First element is reserved to store the number of sloppy frames. |
| 366 | int cursor = 1; |
| 367 | int frames_seen = 0; |
| 368 | int sloppy_frames = 0; |
| 369 | bool encountered_strict_function = false; |
| 370 | for (JavaScriptFrameIterator iter(this); |
| 371 | !iter.done() && frames_seen < limit; |
| 372 | iter.Advance()) { |
| 373 | JavaScriptFrame* frame = iter.frame(); |
| 374 | // Set initial size to the maximum inlining level + 1 for the outermost |
| 375 | // function. |
| 376 | List<FrameSummary> frames(FLAG_max_inlining_levels + 1); |
| 377 | frame->Summarize(&frames); |
| 378 | for (int i = frames.length() - 1; i >= 0; i--) { |
| 379 | Handle<JSFunction> fun = frames[i].function(); |
| 380 | Handle<Object> recv = frames[i].receiver(); |
| 381 | // Filter out internal frames that we do not want to show. |
| 382 | if (!IsVisibleInStackTrace(*fun, *caller, *recv, &seen_caller)) continue; |
| 383 | // Filter out frames from other security contexts. |
| 384 | if (!this->context()->HasSameSecurityTokenAs(fun->context())) continue; |
| 385 | if (cursor + 4 > elements->length()) { |
| 386 | int new_capacity = JSObject::NewElementsCapacity(elements->length()); |
| 387 | Handle<FixedArray> new_elements = |
| 388 | factory()->NewFixedArrayWithHoles(new_capacity); |
| 389 | for (int i = 0; i < cursor; i++) { |
| 390 | new_elements->set(i, elements->get(i)); |
| 391 | } |
| 392 | elements = new_elements; |
| 393 | } |
| 394 | DCHECK(cursor + 4 <= elements->length()); |
| 395 | |
| 396 | |
| 397 | Handle<Code> code = frames[i].code(); |
| 398 | Handle<Smi> offset(Smi::FromInt(frames[i].offset()), this); |
| 399 | // The stack trace API should not expose receivers and function |
| 400 | // objects on frames deeper than the top-most one with a strict |
| 401 | // mode function. The number of sloppy frames is stored as |
| 402 | // first element in the result array. |
| 403 | if (!encountered_strict_function) { |
| 404 | if (fun->shared()->strict_mode() == STRICT) { |
| 405 | encountered_strict_function = true; |
| 406 | } else { |
| 407 | sloppy_frames++; |
| 408 | } |
| 409 | } |
| 410 | elements->set(cursor++, *recv); |
| 411 | elements->set(cursor++, *fun); |
| 412 | elements->set(cursor++, *code); |
| 413 | elements->set(cursor++, *offset); |
| 414 | frames_seen++; |
| 415 | } |
| 416 | } |
| 417 | elements->set(0, Smi::FromInt(sloppy_frames)); |
| 418 | Handle<JSArray> result = factory()->NewJSArrayWithElements(elements); |
| 419 | result->set_length(Smi::FromInt(cursor)); |
| 420 | return result; |
| 421 | } |
| 422 | |
| 423 | |
| 424 | void Isolate::CaptureAndSetDetailedStackTrace(Handle<JSObject> error_object) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 425 | if (capture_stack_trace_for_uncaught_exceptions_) { |
| 426 | // Capture stack trace for a detailed exception message. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 427 | Handle<Name> key = factory()->detailed_stack_trace_symbol(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 428 | Handle<JSArray> stack_trace = CaptureCurrentStackTrace( |
| 429 | stack_trace_for_uncaught_exceptions_frame_limit_, |
| 430 | stack_trace_for_uncaught_exceptions_options_); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 431 | JSObject::SetProperty(error_object, key, stack_trace, STRICT).Assert(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 432 | } |
| 433 | } |
| 434 | |
| 435 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 436 | void Isolate::CaptureAndSetSimpleStackTrace(Handle<JSObject> error_object, |
| 437 | Handle<Object> caller) { |
| 438 | // Capture stack trace for simple stack trace string formatting. |
| 439 | Handle<Name> key = factory()->stack_trace_symbol(); |
| 440 | Handle<Object> stack_trace = CaptureSimpleStackTrace(error_object, caller); |
| 441 | JSObject::SetProperty(error_object, key, stack_trace, STRICT).Assert(); |
| 442 | } |
| 443 | |
| 444 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 445 | Handle<JSArray> Isolate::CaptureCurrentStackTrace( |
| 446 | int frame_limit, StackTrace::StackTraceOptions options) { |
| 447 | // Ensure no negative values. |
| 448 | int limit = Max(frame_limit, 0); |
| 449 | Handle<JSArray> stack_trace = factory()->NewJSArray(frame_limit); |
| 450 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 451 | Handle<String> column_key = |
| 452 | factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("column")); |
| 453 | Handle<String> line_key = |
| 454 | factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("lineNumber")); |
| 455 | Handle<String> script_id_key = |
| 456 | factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("scriptId")); |
| 457 | Handle<String> script_name_key = |
| 458 | factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("scriptName")); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 459 | Handle<String> script_name_or_source_url_key = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 460 | factory()->InternalizeOneByteString( |
| 461 | STATIC_CHAR_VECTOR("scriptNameOrSourceURL")); |
| 462 | Handle<String> function_key = |
| 463 | factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("functionName")); |
| 464 | Handle<String> eval_key = |
| 465 | factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("isEval")); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 466 | Handle<String> constructor_key = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 467 | factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("isConstructor")); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 468 | |
| 469 | StackTraceFrameIterator it(this); |
| 470 | int frames_seen = 0; |
| 471 | while (!it.done() && (frames_seen < limit)) { |
| 472 | JavaScriptFrame* frame = it.frame(); |
| 473 | // Set initial size to the maximum inlining level + 1 for the outermost |
| 474 | // function. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 475 | List<FrameSummary> frames(FLAG_max_inlining_levels + 1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 476 | frame->Summarize(&frames); |
| 477 | for (int i = frames.length() - 1; i >= 0 && frames_seen < limit; i--) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 478 | Handle<JSFunction> fun = frames[i].function(); |
| 479 | // Filter frames from other security contexts. |
| 480 | if (!(options & StackTrace::kExposeFramesAcrossSecurityOrigins) && |
| 481 | !this->context()->HasSameSecurityTokenAs(fun->context())) continue; |
| 482 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 483 | // Create a JSObject to hold the information for the StackFrame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 484 | Handle<JSObject> stack_frame = factory()->NewJSObject(object_function()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 485 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 486 | Handle<Script> script(Script::cast(fun->shared()->script())); |
| 487 | |
| 488 | if (options & StackTrace::kLineNumber) { |
| 489 | int script_line_offset = script->line_offset()->value(); |
| 490 | int position = frames[i].code()->SourcePosition(frames[i].pc()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 491 | int line_number = Script::GetLineNumber(script, position); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 492 | // line_number is already shifted by the script_line_offset. |
| 493 | int relative_line_number = line_number - script_line_offset; |
| 494 | if (options & StackTrace::kColumnOffset && relative_line_number >= 0) { |
| 495 | Handle<FixedArray> line_ends(FixedArray::cast(script->line_ends())); |
| 496 | int start = (relative_line_number == 0) ? 0 : |
| 497 | Smi::cast(line_ends->get(relative_line_number - 1))->value() + 1; |
| 498 | int column_offset = position - start; |
| 499 | if (relative_line_number == 0) { |
| 500 | // For the case where the code is on the same line as the script |
| 501 | // tag. |
| 502 | column_offset += script->column_offset()->value(); |
| 503 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 504 | JSObject::AddProperty( |
| 505 | stack_frame, column_key, |
| 506 | handle(Smi::FromInt(column_offset + 1), this), NONE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 507 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 508 | JSObject::AddProperty( |
| 509 | stack_frame, line_key, |
| 510 | handle(Smi::FromInt(line_number + 1), this), NONE); |
| 511 | } |
| 512 | |
| 513 | if (options & StackTrace::kScriptId) { |
| 514 | JSObject::AddProperty( |
| 515 | stack_frame, script_id_key, handle(script->id(), this), NONE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 516 | } |
| 517 | |
| 518 | if (options & StackTrace::kScriptName) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 519 | JSObject::AddProperty( |
| 520 | stack_frame, script_name_key, handle(script->name(), this), NONE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 521 | } |
| 522 | |
| 523 | if (options & StackTrace::kScriptNameOrSourceURL) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 524 | Handle<Object> result = Script::GetNameOrSourceURL(script); |
| 525 | JSObject::AddProperty( |
| 526 | stack_frame, script_name_or_source_url_key, result, NONE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | if (options & StackTrace::kFunctionName) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 530 | Handle<Object> fun_name(fun->shared()->DebugName(), this); |
| 531 | JSObject::AddProperty(stack_frame, function_key, fun_name, NONE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 532 | } |
| 533 | |
| 534 | if (options & StackTrace::kIsEval) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 535 | Handle<Object> is_eval = |
| 536 | script->compilation_type() == Script::COMPILATION_TYPE_EVAL ? |
| 537 | factory()->true_value() : factory()->false_value(); |
| 538 | JSObject::AddProperty(stack_frame, eval_key, is_eval, NONE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 539 | } |
| 540 | |
| 541 | if (options & StackTrace::kIsConstructor) { |
| 542 | Handle<Object> is_constructor = (frames[i].is_constructor()) ? |
| 543 | factory()->true_value() : factory()->false_value(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 544 | JSObject::AddProperty( |
| 545 | stack_frame, constructor_key, is_constructor, NONE); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 546 | } |
| 547 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 548 | FixedArray::cast(stack_trace->elements())->set(frames_seen, *stack_frame); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 549 | frames_seen++; |
| 550 | } |
| 551 | it.Advance(); |
| 552 | } |
| 553 | |
| 554 | stack_trace->set_length(Smi::FromInt(frames_seen)); |
| 555 | return stack_trace; |
| 556 | } |
| 557 | |
| 558 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 559 | void Isolate::PrintStack(FILE* out) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 560 | if (stack_trace_nesting_level_ == 0) { |
| 561 | stack_trace_nesting_level_++; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 562 | StringStream::ClearMentionedObjectCache(this); |
| 563 | HeapStringAllocator allocator; |
| 564 | StringStream accumulator(&allocator); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 565 | incomplete_message_ = &accumulator; |
| 566 | PrintStack(&accumulator); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 567 | accumulator.OutputToFile(out); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 568 | InitializeLoggingAndCounters(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 569 | accumulator.Log(this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 570 | incomplete_message_ = NULL; |
| 571 | stack_trace_nesting_level_ = 0; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 572 | } else if (stack_trace_nesting_level_ == 1) { |
| 573 | stack_trace_nesting_level_++; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 574 | base::OS::PrintError( |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 575 | "\n\nAttempt to print stack while printing stack (double fault)\n"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 576 | base::OS::PrintError( |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 577 | "If you are lucky you may find a partial stack dump on stdout.\n\n"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 578 | incomplete_message_->OutputToFile(out); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 579 | } |
| 580 | } |
| 581 | |
| 582 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 583 | static void PrintFrames(Isolate* isolate, |
| 584 | StringStream* accumulator, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 585 | StackFrame::PrintMode mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 586 | StackFrameIterator it(isolate); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 587 | for (int i = 0; !it.done(); it.Advance()) { |
| 588 | it.frame()->Print(accumulator, mode, i++); |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | |
| 593 | void Isolate::PrintStack(StringStream* accumulator) { |
| 594 | if (!IsInitialized()) { |
| 595 | accumulator->Add( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 596 | "\n==== JS stack trace is not available =======================\n\n"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 597 | accumulator->Add( |
| 598 | "\n==== Isolate for the thread is not initialized =============\n\n"); |
| 599 | return; |
| 600 | } |
| 601 | // The MentionedObjectCache is not GC-proof at the moment. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 602 | DisallowHeapAllocation no_gc; |
| 603 | DCHECK(StringStream::IsMentionedObjectCacheClear(this)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 604 | |
| 605 | // Avoid printing anything if there are no frames. |
| 606 | if (c_entry_fp(thread_local_top()) == 0) return; |
| 607 | |
| 608 | accumulator->Add( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 609 | "\n==== JS stack trace =========================================\n\n"); |
| 610 | PrintFrames(this, accumulator, StackFrame::OVERVIEW); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 611 | |
| 612 | accumulator->Add( |
| 613 | "\n==== Details ================================================\n\n"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 614 | PrintFrames(this, accumulator, StackFrame::DETAILS); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 615 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 616 | accumulator->PrintMentionedObjectCache(this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 617 | accumulator->Add("=====================\n\n"); |
| 618 | } |
| 619 | |
| 620 | |
| 621 | void Isolate::SetFailedAccessCheckCallback( |
| 622 | v8::FailedAccessCheckCallback callback) { |
| 623 | thread_local_top()->failed_access_check_callback_ = callback; |
| 624 | } |
| 625 | |
| 626 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 627 | static inline AccessCheckInfo* GetAccessCheckInfo(Isolate* isolate, |
| 628 | Handle<JSObject> receiver) { |
| 629 | JSFunction* constructor = JSFunction::cast(receiver->map()->constructor()); |
| 630 | if (!constructor->shared()->IsApiFunction()) return NULL; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 631 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 632 | Object* data_obj = |
| 633 | constructor->shared()->get_api_func_data()->access_check_info(); |
| 634 | if (data_obj == isolate->heap()->undefined_value()) return NULL; |
| 635 | |
| 636 | return AccessCheckInfo::cast(data_obj); |
| 637 | } |
| 638 | |
| 639 | |
| 640 | void Isolate::ReportFailedAccessCheck(Handle<JSObject> receiver, |
| 641 | v8::AccessType type) { |
| 642 | if (!thread_local_top()->failed_access_check_callback_) { |
| 643 | Handle<String> message = factory()->InternalizeUtf8String("no access"); |
| 644 | Handle<Object> error; |
| 645 | ASSIGN_RETURN_ON_EXCEPTION_VALUE( |
| 646 | this, error, factory()->NewTypeError(message), /* void */); |
| 647 | ScheduleThrow(*error); |
| 648 | return; |
| 649 | } |
| 650 | |
| 651 | DCHECK(receiver->IsAccessCheckNeeded()); |
| 652 | DCHECK(context()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 653 | |
| 654 | // Get the data object from access check info. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 655 | HandleScope scope(this); |
| 656 | Handle<Object> data; |
| 657 | { DisallowHeapAllocation no_gc; |
| 658 | AccessCheckInfo* access_check_info = GetAccessCheckInfo(this, receiver); |
| 659 | if (!access_check_info) return; |
| 660 | data = handle(access_check_info->data(), this); |
| 661 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 662 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 663 | // Leaving JavaScript. |
| 664 | VMState<EXTERNAL> state(this); |
| 665 | thread_local_top()->failed_access_check_callback_( |
| 666 | v8::Utils::ToLocal(receiver), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 667 | type, |
| 668 | v8::Utils::ToLocal(data)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 669 | } |
| 670 | |
| 671 | |
| 672 | enum MayAccessDecision { |
| 673 | YES, NO, UNKNOWN |
| 674 | }; |
| 675 | |
| 676 | |
| 677 | static MayAccessDecision MayAccessPreCheck(Isolate* isolate, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 678 | Handle<JSObject> receiver, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 679 | v8::AccessType type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 680 | DisallowHeapAllocation no_gc; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 681 | // During bootstrapping, callback functions are not enabled yet. |
| 682 | if (isolate->bootstrapper()->IsActive()) return YES; |
| 683 | |
| 684 | if (receiver->IsJSGlobalProxy()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 685 | Object* receiver_context = JSGlobalProxy::cast(*receiver)->native_context(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 686 | if (!receiver_context->IsContext()) return NO; |
| 687 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 688 | // Get the native context of current top context. |
| 689 | // avoid using Isolate::native_context() because it uses Handle. |
| 690 | Context* native_context = |
| 691 | isolate->context()->global_object()->native_context(); |
| 692 | if (receiver_context == native_context) return YES; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 693 | |
| 694 | if (Context::cast(receiver_context)->security_token() == |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 695 | native_context->security_token()) |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 696 | return YES; |
| 697 | } |
| 698 | |
| 699 | return UNKNOWN; |
| 700 | } |
| 701 | |
| 702 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 703 | bool Isolate::MayNamedAccess(Handle<JSObject> receiver, |
| 704 | Handle<Object> key, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 705 | v8::AccessType type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 706 | DCHECK(receiver->IsJSGlobalProxy() || receiver->IsAccessCheckNeeded()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 707 | |
| 708 | // Skip checks for hidden properties access. Note, we do not |
| 709 | // require existence of a context in this case. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 710 | if (key.is_identical_to(factory()->hidden_string())) return true; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 711 | |
| 712 | // Check for compatibility between the security tokens in the |
| 713 | // current lexical context and the accessed object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 714 | DCHECK(context()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 715 | |
| 716 | MayAccessDecision decision = MayAccessPreCheck(this, receiver, type); |
| 717 | if (decision != UNKNOWN) return decision == YES; |
| 718 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 719 | HandleScope scope(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 720 | Handle<Object> data; |
| 721 | v8::NamedSecurityCallback callback; |
| 722 | { DisallowHeapAllocation no_gc; |
| 723 | AccessCheckInfo* access_check_info = GetAccessCheckInfo(this, receiver); |
| 724 | if (!access_check_info) return false; |
| 725 | Object* fun_obj = access_check_info->named_callback(); |
| 726 | callback = v8::ToCData<v8::NamedSecurityCallback>(fun_obj); |
| 727 | if (!callback) return false; |
| 728 | data = handle(access_check_info->data(), this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 729 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 730 | |
| 731 | LOG(this, ApiNamedSecurityCheck(*key)); |
| 732 | |
| 733 | // Leaving JavaScript. |
| 734 | VMState<EXTERNAL> state(this); |
| 735 | return callback(v8::Utils::ToLocal(receiver), |
| 736 | v8::Utils::ToLocal(key), |
| 737 | type, |
| 738 | v8::Utils::ToLocal(data)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 742 | bool Isolate::MayIndexedAccess(Handle<JSObject> receiver, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 743 | uint32_t index, |
| 744 | v8::AccessType type) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 745 | DCHECK(receiver->IsJSGlobalProxy() || receiver->IsAccessCheckNeeded()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 746 | // Check for compatibility between the security tokens in the |
| 747 | // current lexical context and the accessed object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 748 | DCHECK(context()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 749 | |
| 750 | MayAccessDecision decision = MayAccessPreCheck(this, receiver, type); |
| 751 | if (decision != UNKNOWN) return decision == YES; |
| 752 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 753 | HandleScope scope(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 754 | Handle<Object> data; |
| 755 | v8::IndexedSecurityCallback callback; |
| 756 | { DisallowHeapAllocation no_gc; |
| 757 | // Get named access check callback |
| 758 | AccessCheckInfo* access_check_info = GetAccessCheckInfo(this, receiver); |
| 759 | if (!access_check_info) return false; |
| 760 | Object* fun_obj = access_check_info->indexed_callback(); |
| 761 | callback = v8::ToCData<v8::IndexedSecurityCallback>(fun_obj); |
| 762 | if (!callback) return false; |
| 763 | data = handle(access_check_info->data(), this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 764 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 765 | |
| 766 | LOG(this, ApiIndexedSecurityCheck(index)); |
| 767 | |
| 768 | // Leaving JavaScript. |
| 769 | VMState<EXTERNAL> state(this); |
| 770 | return callback( |
| 771 | v8::Utils::ToLocal(receiver), index, type, v8::Utils::ToLocal(data)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 772 | } |
| 773 | |
| 774 | |
| 775 | const char* const Isolate::kStackOverflowMessage = |
| 776 | "Uncaught RangeError: Maximum call stack size exceeded"; |
| 777 | |
| 778 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 779 | Object* Isolate::StackOverflow() { |
| 780 | HandleScope scope(this); |
| 781 | // At this point we cannot create an Error object using its javascript |
| 782 | // constructor. Instead, we copy the pre-constructed boilerplate and |
| 783 | // attach the stack trace as a hidden property. |
| 784 | Handle<String> key = factory()->stack_overflow_string(); |
| 785 | Handle<JSObject> boilerplate = Handle<JSObject>::cast( |
| 786 | Object::GetProperty(js_builtins_object(), key).ToHandleChecked()); |
| 787 | Handle<JSObject> exception = factory()->CopyJSObject(boilerplate); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 788 | DoThrow(*exception, NULL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 789 | |
| 790 | CaptureAndSetSimpleStackTrace(exception, factory()->undefined_value()); |
| 791 | return heap()->exception(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 792 | } |
| 793 | |
| 794 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 795 | Object* Isolate::TerminateExecution() { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 796 | DoThrow(heap_.termination_exception(), NULL); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 797 | return heap()->exception(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 801 | void Isolate::CancelTerminateExecution() { |
| 802 | if (try_catch_handler()) { |
| 803 | try_catch_handler()->has_terminated_ = false; |
| 804 | } |
| 805 | if (has_pending_exception() && |
| 806 | pending_exception() == heap_.termination_exception()) { |
| 807 | thread_local_top()->external_caught_exception_ = false; |
| 808 | clear_pending_exception(); |
| 809 | } |
| 810 | if (has_scheduled_exception() && |
| 811 | scheduled_exception() == heap_.termination_exception()) { |
| 812 | thread_local_top()->external_caught_exception_ = false; |
| 813 | clear_scheduled_exception(); |
| 814 | } |
| 815 | } |
| 816 | |
| 817 | |
| 818 | void Isolate::InvokeApiInterruptCallback() { |
| 819 | // Note: callback below should be called outside of execution access lock. |
| 820 | InterruptCallback callback = NULL; |
| 821 | void* data = NULL; |
| 822 | { |
| 823 | ExecutionAccess access(this); |
| 824 | callback = api_interrupt_callback_; |
| 825 | data = api_interrupt_callback_data_; |
| 826 | api_interrupt_callback_ = NULL; |
| 827 | api_interrupt_callback_data_ = NULL; |
| 828 | } |
| 829 | |
| 830 | if (callback != NULL) { |
| 831 | VMState<EXTERNAL> state(this); |
| 832 | HandleScope handle_scope(this); |
| 833 | callback(reinterpret_cast<v8::Isolate*>(this), data); |
| 834 | } |
| 835 | } |
| 836 | |
| 837 | |
| 838 | Object* Isolate::Throw(Object* exception, MessageLocation* location) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 839 | DoThrow(exception, location); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 840 | return heap()->exception(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 841 | } |
| 842 | |
| 843 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 844 | Object* Isolate::ReThrow(Object* exception) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 845 | bool can_be_caught_externally = false; |
| 846 | bool catchable_by_javascript = is_catchable_by_javascript(exception); |
| 847 | ShouldReportException(&can_be_caught_externally, catchable_by_javascript); |
| 848 | |
| 849 | thread_local_top()->catcher_ = can_be_caught_externally ? |
| 850 | try_catch_handler() : NULL; |
| 851 | |
| 852 | // Set the exception being re-thrown. |
| 853 | set_pending_exception(exception); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 854 | return heap()->exception(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 855 | } |
| 856 | |
| 857 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 858 | Object* Isolate::ThrowIllegalOperation() { |
| 859 | if (FLAG_stack_trace_on_illegal) PrintStack(stdout); |
| 860 | return Throw(heap_.illegal_access_string()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 861 | } |
| 862 | |
| 863 | |
| 864 | void Isolate::ScheduleThrow(Object* exception) { |
| 865 | // When scheduling a throw we first throw the exception to get the |
| 866 | // error reporting if it is uncaught before rescheduling it. |
| 867 | Throw(exception); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 868 | PropagatePendingExceptionToExternalTryCatch(); |
| 869 | if (has_pending_exception()) { |
| 870 | thread_local_top()->scheduled_exception_ = pending_exception(); |
| 871 | thread_local_top()->external_caught_exception_ = false; |
| 872 | clear_pending_exception(); |
| 873 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 874 | } |
| 875 | |
| 876 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 877 | void Isolate::RestorePendingMessageFromTryCatch(v8::TryCatch* handler) { |
| 878 | DCHECK(handler == try_catch_handler()); |
| 879 | DCHECK(handler->HasCaught()); |
| 880 | DCHECK(handler->rethrow_); |
| 881 | DCHECK(handler->capture_message_); |
| 882 | Object* message = reinterpret_cast<Object*>(handler->message_obj_); |
| 883 | Object* script = reinterpret_cast<Object*>(handler->message_script_); |
| 884 | DCHECK(message->IsJSMessageObject() || message->IsTheHole()); |
| 885 | DCHECK(script->IsScript() || script->IsTheHole()); |
| 886 | thread_local_top()->pending_message_obj_ = message; |
| 887 | thread_local_top()->pending_message_script_ = script; |
| 888 | thread_local_top()->pending_message_start_pos_ = handler->message_start_pos_; |
| 889 | thread_local_top()->pending_message_end_pos_ = handler->message_end_pos_; |
| 890 | } |
| 891 | |
| 892 | |
| 893 | void Isolate::CancelScheduledExceptionFromTryCatch(v8::TryCatch* handler) { |
| 894 | DCHECK(has_scheduled_exception()); |
| 895 | if (scheduled_exception() == handler->exception_) { |
| 896 | DCHECK(scheduled_exception() != heap()->termination_exception()); |
| 897 | clear_scheduled_exception(); |
| 898 | } |
| 899 | } |
| 900 | |
| 901 | |
| 902 | Object* Isolate::PromoteScheduledException() { |
| 903 | Object* thrown = scheduled_exception(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 904 | clear_scheduled_exception(); |
| 905 | // Re-throw the exception to avoid getting repeated error reporting. |
| 906 | return ReThrow(thrown); |
| 907 | } |
| 908 | |
| 909 | |
| 910 | void Isolate::PrintCurrentStackTrace(FILE* out) { |
| 911 | StackTraceFrameIterator it(this); |
| 912 | while (!it.done()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 913 | HandleScope scope(this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 914 | // Find code position if recorded in relocation info. |
| 915 | JavaScriptFrame* frame = it.frame(); |
| 916 | int pos = frame->LookupCode()->SourcePosition(frame->pc()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 917 | Handle<Object> pos_obj(Smi::FromInt(pos), this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 918 | // Fetch function and receiver. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 919 | Handle<JSFunction> fun(frame->function()); |
| 920 | Handle<Object> recv(frame->receiver(), this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 921 | // Advance to the next JavaScript frame and determine if the |
| 922 | // current frame is the top-level frame. |
| 923 | it.Advance(); |
| 924 | Handle<Object> is_top_level = it.done() |
| 925 | ? factory()->true_value() |
| 926 | : factory()->false_value(); |
| 927 | // Generate and print stack trace line. |
| 928 | Handle<String> line = |
| 929 | Execution::GetStackTraceLine(recv, fun, pos_obj, is_top_level); |
| 930 | if (line->length() > 0) { |
| 931 | line->PrintOn(out); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 932 | PrintF(out, "\n"); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 933 | } |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | |
| 938 | void Isolate::ComputeLocation(MessageLocation* target) { |
| 939 | *target = MessageLocation(Handle<Script>(heap_.empty_script()), -1, -1); |
| 940 | StackTraceFrameIterator it(this); |
| 941 | if (!it.done()) { |
| 942 | JavaScriptFrame* frame = it.frame(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 943 | JSFunction* fun = frame->function(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 944 | Object* script = fun->shared()->script(); |
| 945 | if (script->IsScript() && |
| 946 | !(Script::cast(script)->source()->IsUndefined())) { |
| 947 | int pos = frame->LookupCode()->SourcePosition(frame->pc()); |
| 948 | // Compute the location from the function and the reloc info. |
| 949 | Handle<Script> casted_script(Script::cast(script)); |
| 950 | *target = MessageLocation(casted_script, pos, pos + 1); |
| 951 | } |
| 952 | } |
| 953 | } |
| 954 | |
| 955 | |
| 956 | bool Isolate::ShouldReportException(bool* can_be_caught_externally, |
| 957 | bool catchable_by_javascript) { |
| 958 | // Find the top-most try-catch handler. |
| 959 | StackHandler* handler = |
| 960 | StackHandler::FromAddress(Isolate::handler(thread_local_top())); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 961 | while (handler != NULL && !handler->is_catch()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 962 | handler = handler->next(); |
| 963 | } |
| 964 | |
| 965 | // Get the address of the external handler so we can compare the address to |
| 966 | // determine which one is closer to the top of the stack. |
| 967 | Address external_handler_address = |
| 968 | thread_local_top()->try_catch_handler_address(); |
| 969 | |
| 970 | // The exception has been externally caught if and only if there is |
| 971 | // an external handler which is on top of the top-most try-catch |
| 972 | // handler. |
| 973 | *can_be_caught_externally = external_handler_address != NULL && |
| 974 | (handler == NULL || handler->address() > external_handler_address || |
| 975 | !catchable_by_javascript); |
| 976 | |
| 977 | if (*can_be_caught_externally) { |
| 978 | // Only report the exception if the external handler is verbose. |
| 979 | return try_catch_handler()->is_verbose_; |
| 980 | } else { |
| 981 | // Report the exception if it isn't caught by JavaScript code. |
| 982 | return handler == NULL; |
| 983 | } |
| 984 | } |
| 985 | |
| 986 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 987 | bool Isolate::IsErrorObject(Handle<Object> obj) { |
| 988 | if (!obj->IsJSObject()) return false; |
| 989 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 990 | Handle<String> error_key = |
| 991 | factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("$Error")); |
| 992 | Handle<Object> error_constructor = Object::GetProperty( |
| 993 | js_builtins_object(), error_key).ToHandleChecked(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 994 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 995 | DisallowHeapAllocation no_gc; |
| 996 | for (PrototypeIterator iter(this, *obj, PrototypeIterator::START_AT_RECEIVER); |
| 997 | !iter.IsAtEnd(); iter.Advance()) { |
| 998 | if (iter.GetCurrent()->IsJSProxy()) return false; |
| 999 | if (JSObject::cast(iter.GetCurrent())->map()->constructor() == |
| 1000 | *error_constructor) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1001 | return true; |
| 1002 | } |
| 1003 | } |
| 1004 | return false; |
| 1005 | } |
| 1006 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1007 | static int fatal_exception_depth = 0; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1008 | |
| 1009 | void Isolate::DoThrow(Object* exception, MessageLocation* location) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1010 | DCHECK(!has_pending_exception()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1011 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1012 | HandleScope scope(this); |
| 1013 | Handle<Object> exception_handle(exception, this); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1014 | |
| 1015 | // Determine reporting and whether the exception is caught externally. |
| 1016 | bool catchable_by_javascript = is_catchable_by_javascript(exception); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1017 | bool can_be_caught_externally = false; |
| 1018 | bool should_report_exception = |
| 1019 | ShouldReportException(&can_be_caught_externally, catchable_by_javascript); |
| 1020 | bool report_exception = catchable_by_javascript && should_report_exception; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1021 | bool try_catch_needs_message = |
| 1022 | can_be_caught_externally && try_catch_handler()->capture_message_; |
| 1023 | bool bootstrapping = bootstrapper()->IsActive(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1024 | bool rethrowing_message = thread_local_top()->rethrowing_message_; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1025 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1026 | thread_local_top()->rethrowing_message_ = false; |
| 1027 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1028 | // Notify debugger of exception. |
| 1029 | if (catchable_by_javascript) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1030 | debug()->OnThrow(exception_handle, report_exception); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1031 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1032 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1033 | // Generate the message if required. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1034 | if (!rethrowing_message && (report_exception || try_catch_needs_message)) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1035 | MessageLocation potential_computed_location; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1036 | if (location == NULL) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1037 | // If no location was specified we use a computed one instead. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1038 | ComputeLocation(&potential_computed_location); |
| 1039 | location = &potential_computed_location; |
| 1040 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1041 | // It's not safe to try to make message objects or collect stack traces |
| 1042 | // while the bootstrapper is active since the infrastructure may not have |
| 1043 | // been properly initialized. |
| 1044 | if (!bootstrapping) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1045 | Handle<JSArray> stack_trace_object; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1046 | if (capture_stack_trace_for_uncaught_exceptions_) { |
| 1047 | if (IsErrorObject(exception_handle)) { |
| 1048 | // We fetch the stack trace that corresponds to this error object. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1049 | Handle<Name> key = factory()->detailed_stack_trace_symbol(); |
| 1050 | // Look up as own property. If the lookup fails, the exception is |
| 1051 | // probably not a valid Error object. In that case, we fall through |
| 1052 | // and capture the stack trace at this throw site. |
| 1053 | LookupIterator lookup(exception_handle, key, |
| 1054 | LookupIterator::OWN_SKIP_INTERCEPTOR); |
| 1055 | Handle<Object> stack_trace_property; |
| 1056 | if (Object::GetProperty(&lookup).ToHandle(&stack_trace_property) && |
| 1057 | stack_trace_property->IsJSArray()) { |
| 1058 | stack_trace_object = Handle<JSArray>::cast(stack_trace_property); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1059 | } |
| 1060 | } |
| 1061 | if (stack_trace_object.is_null()) { |
| 1062 | // Not an error object, we capture at throw site. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1063 | stack_trace_object = CaptureCurrentStackTrace( |
| 1064 | stack_trace_for_uncaught_exceptions_frame_limit_, |
| 1065 | stack_trace_for_uncaught_exceptions_options_); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1066 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1067 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1068 | |
| 1069 | Handle<Object> exception_arg = exception_handle; |
| 1070 | // If the exception argument is a custom object, turn it into a string |
| 1071 | // before throwing as uncaught exception. Note that the pending |
| 1072 | // exception object to be set later must not be turned into a string. |
| 1073 | if (exception_arg->IsJSObject() && !IsErrorObject(exception_arg)) { |
| 1074 | MaybeHandle<Object> maybe_exception = |
| 1075 | Execution::ToDetailString(this, exception_arg); |
| 1076 | if (!maybe_exception.ToHandle(&exception_arg)) { |
| 1077 | exception_arg = factory()->InternalizeOneByteString( |
| 1078 | STATIC_CHAR_VECTOR("exception")); |
| 1079 | } |
| 1080 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1081 | Handle<Object> message_obj = MessageHandler::MakeMessageObject( |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1082 | this, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1083 | "uncaught_exception", |
| 1084 | location, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1085 | HandleVector<Object>(&exception_arg, 1), |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1086 | stack_trace_object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1087 | thread_local_top()->pending_message_obj_ = *message_obj; |
| 1088 | if (location != NULL) { |
| 1089 | thread_local_top()->pending_message_script_ = *location->script(); |
| 1090 | thread_local_top()->pending_message_start_pos_ = location->start_pos(); |
| 1091 | thread_local_top()->pending_message_end_pos_ = location->end_pos(); |
| 1092 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1093 | |
| 1094 | // If the abort-on-uncaught-exception flag is specified, abort on any |
| 1095 | // exception not caught by JavaScript, even when an external handler is |
| 1096 | // present. This flag is intended for use by JavaScript developers, so |
| 1097 | // print a user-friendly stack trace (not an internal one). |
| 1098 | if (fatal_exception_depth == 0 && |
| 1099 | FLAG_abort_on_uncaught_exception && |
| 1100 | (report_exception || can_be_caught_externally)) { |
| 1101 | fatal_exception_depth++; |
| 1102 | PrintF(stderr, |
| 1103 | "%s\n\nFROM\n", |
| 1104 | MessageHandler::GetLocalizedMessage(this, message_obj).get()); |
| 1105 | PrintCurrentStackTrace(stderr); |
| 1106 | base::OS::Abort(); |
| 1107 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1108 | } else if (location != NULL && !location->script().is_null()) { |
| 1109 | // We are bootstrapping and caught an error where the location is set |
| 1110 | // and we have a script for the location. |
| 1111 | // In this case we could have an extension (or an internal error |
| 1112 | // somewhere) and we print out the line number at which the error occured |
| 1113 | // to the console for easier debugging. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1114 | int line_number = |
| 1115 | location->script()->GetLineNumber(location->start_pos()) + 1; |
| 1116 | if (exception->IsString() && location->script()->name()->IsString()) { |
| 1117 | base::OS::PrintError( |
| 1118 | "Extension or internal compilation error: %s in %s at line %d.\n", |
| 1119 | String::cast(exception)->ToCString().get(), |
| 1120 | String::cast(location->script()->name())->ToCString().get(), |
| 1121 | line_number); |
| 1122 | } else if (location->script()->name()->IsString()) { |
| 1123 | base::OS::PrintError( |
| 1124 | "Extension or internal compilation error in %s at line %d.\n", |
| 1125 | String::cast(location->script()->name())->ToCString().get(), |
| 1126 | line_number); |
| 1127 | } else { |
| 1128 | base::OS::PrintError("Extension or internal compilation error.\n"); |
| 1129 | } |
| 1130 | #ifdef OBJECT_PRINT |
| 1131 | // Since comments and empty lines have been stripped from the source of |
| 1132 | // builtins, print the actual source here so that line numbers match. |
| 1133 | if (location->script()->source()->IsString()) { |
| 1134 | Handle<String> src(String::cast(location->script()->source())); |
| 1135 | PrintF("Failing script:\n"); |
| 1136 | int len = src->length(); |
| 1137 | int line_number = 1; |
| 1138 | PrintF("%5d: ", line_number); |
| 1139 | for (int i = 0; i < len; i++) { |
| 1140 | uint16_t character = src->Get(i); |
| 1141 | PrintF("%c", character); |
| 1142 | if (character == '\n' && i < len - 2) { |
| 1143 | PrintF("%5d: ", ++line_number); |
| 1144 | } |
| 1145 | } |
| 1146 | } |
| 1147 | #endif |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1148 | } |
| 1149 | } |
| 1150 | |
| 1151 | // Save the message for reporting if the the exception remains uncaught. |
| 1152 | thread_local_top()->has_pending_message_ = report_exception; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1153 | |
| 1154 | // Do not forget to clean catcher_ if currently thrown exception cannot |
| 1155 | // be caught. If necessary, ReThrow will update the catcher. |
| 1156 | thread_local_top()->catcher_ = can_be_caught_externally ? |
| 1157 | try_catch_handler() : NULL; |
| 1158 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1159 | set_pending_exception(*exception_handle); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1160 | } |
| 1161 | |
| 1162 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1163 | bool Isolate::HasExternalTryCatch() { |
| 1164 | DCHECK(has_pending_exception()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1165 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1166 | return (thread_local_top()->catcher_ != NULL) && |
| 1167 | (try_catch_handler() == thread_local_top()->catcher_); |
| 1168 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1169 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1170 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1171 | bool Isolate::IsFinallyOnTop() { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1172 | // Get the address of the external handler so we can compare the address to |
| 1173 | // determine which one is closer to the top of the stack. |
| 1174 | Address external_handler_address = |
| 1175 | thread_local_top()->try_catch_handler_address(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1176 | DCHECK(external_handler_address != NULL); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1177 | |
| 1178 | // The exception has been externally caught if and only if there is |
| 1179 | // an external handler which is on top of the top-most try-finally |
| 1180 | // handler. |
| 1181 | // There should be no try-catch blocks as they would prohibit us from |
| 1182 | // finding external catcher in the first place (see catcher_ check above). |
| 1183 | // |
| 1184 | // Note, that finally clause would rethrow an exception unless it's |
| 1185 | // aborted by jumps in control flow like return, break, etc. and we'll |
| 1186 | // have another chances to set proper v8::TryCatch. |
| 1187 | StackHandler* handler = |
| 1188 | StackHandler::FromAddress(Isolate::handler(thread_local_top())); |
| 1189 | while (handler != NULL && handler->address() < external_handler_address) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1190 | DCHECK(!handler->is_catch()); |
| 1191 | if (handler->is_finally()) return true; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1192 | |
| 1193 | handler = handler->next(); |
| 1194 | } |
| 1195 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1196 | return false; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1197 | } |
| 1198 | |
| 1199 | |
| 1200 | void Isolate::ReportPendingMessages() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1201 | DCHECK(has_pending_exception()); |
| 1202 | bool can_clear_message = PropagatePendingExceptionToExternalTryCatch(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1203 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1204 | HandleScope scope(this); |
| 1205 | if (thread_local_top_.pending_exception_ == heap()->termination_exception()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1206 | // Do nothing: if needed, the exception has been already propagated to |
| 1207 | // v8::TryCatch. |
| 1208 | } else { |
| 1209 | if (thread_local_top_.has_pending_message_) { |
| 1210 | thread_local_top_.has_pending_message_ = false; |
| 1211 | if (!thread_local_top_.pending_message_obj_->IsTheHole()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1212 | HandleScope scope(this); |
| 1213 | Handle<Object> message_obj(thread_local_top_.pending_message_obj_, |
| 1214 | this); |
| 1215 | if (!thread_local_top_.pending_message_script_->IsTheHole()) { |
| 1216 | Handle<Script> script( |
| 1217 | Script::cast(thread_local_top_.pending_message_script_)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1218 | int start_pos = thread_local_top_.pending_message_start_pos_; |
| 1219 | int end_pos = thread_local_top_.pending_message_end_pos_; |
| 1220 | MessageLocation location(script, start_pos, end_pos); |
| 1221 | MessageHandler::ReportMessage(this, &location, message_obj); |
| 1222 | } else { |
| 1223 | MessageHandler::ReportMessage(this, NULL, message_obj); |
| 1224 | } |
| 1225 | } |
| 1226 | } |
| 1227 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1228 | if (can_clear_message) clear_pending_message(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1229 | } |
| 1230 | |
| 1231 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1232 | MessageLocation Isolate::GetMessageLocation() { |
| 1233 | DCHECK(has_pending_exception()); |
| 1234 | |
| 1235 | if (thread_local_top_.pending_exception_ != heap()->termination_exception() && |
| 1236 | thread_local_top_.has_pending_message_ && |
| 1237 | !thread_local_top_.pending_message_obj_->IsTheHole() && |
| 1238 | !thread_local_top_.pending_message_obj_->IsTheHole()) { |
| 1239 | Handle<Script> script( |
| 1240 | Script::cast(thread_local_top_.pending_message_script_)); |
| 1241 | int start_pos = thread_local_top_.pending_message_start_pos_; |
| 1242 | int end_pos = thread_local_top_.pending_message_end_pos_; |
| 1243 | return MessageLocation(script, start_pos, end_pos); |
| 1244 | } |
| 1245 | |
| 1246 | return MessageLocation(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1247 | } |
| 1248 | |
| 1249 | |
| 1250 | bool Isolate::OptionalRescheduleException(bool is_bottom_call) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1251 | DCHECK(has_pending_exception()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1252 | PropagatePendingExceptionToExternalTryCatch(); |
| 1253 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1254 | bool is_termination_exception = |
| 1255 | pending_exception() == heap_.termination_exception(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1256 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1257 | // Do not reschedule the exception if this is the bottom call. |
| 1258 | bool clear_exception = is_bottom_call; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1259 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1260 | if (is_termination_exception) { |
| 1261 | if (is_bottom_call) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1262 | thread_local_top()->external_caught_exception_ = false; |
| 1263 | clear_pending_exception(); |
| 1264 | return false; |
| 1265 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1266 | } else if (thread_local_top()->external_caught_exception_) { |
| 1267 | // If the exception is externally caught, clear it if there are no |
| 1268 | // JavaScript frames on the way to the C++ frame that has the |
| 1269 | // external handler. |
| 1270 | DCHECK(thread_local_top()->try_catch_handler_address() != NULL); |
| 1271 | Address external_handler_address = |
| 1272 | thread_local_top()->try_catch_handler_address(); |
| 1273 | JavaScriptFrameIterator it(this); |
| 1274 | if (it.done() || (it.frame()->sp() > external_handler_address)) { |
| 1275 | clear_exception = true; |
| 1276 | } |
| 1277 | } |
| 1278 | |
| 1279 | // Clear the exception if needed. |
| 1280 | if (clear_exception) { |
| 1281 | thread_local_top()->external_caught_exception_ = false; |
| 1282 | clear_pending_exception(); |
| 1283 | return false; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1284 | } |
| 1285 | |
| 1286 | // Reschedule the exception. |
| 1287 | thread_local_top()->scheduled_exception_ = pending_exception(); |
| 1288 | clear_pending_exception(); |
| 1289 | return true; |
| 1290 | } |
| 1291 | |
| 1292 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1293 | void Isolate::PushPromise(Handle<JSObject> promise) { |
| 1294 | ThreadLocalTop* tltop = thread_local_top(); |
| 1295 | PromiseOnStack* prev = tltop->promise_on_stack_; |
| 1296 | StackHandler* handler = StackHandler::FromAddress(Isolate::handler(tltop)); |
| 1297 | Handle<JSObject> global_handle = |
| 1298 | Handle<JSObject>::cast(global_handles()->Create(*promise)); |
| 1299 | tltop->promise_on_stack_ = new PromiseOnStack(handler, global_handle, prev); |
| 1300 | } |
| 1301 | |
| 1302 | |
| 1303 | void Isolate::PopPromise() { |
| 1304 | ThreadLocalTop* tltop = thread_local_top(); |
| 1305 | if (tltop->promise_on_stack_ == NULL) return; |
| 1306 | PromiseOnStack* prev = tltop->promise_on_stack_->prev(); |
| 1307 | Handle<Object> global_handle = tltop->promise_on_stack_->promise(); |
| 1308 | delete tltop->promise_on_stack_; |
| 1309 | tltop->promise_on_stack_ = prev; |
| 1310 | global_handles()->Destroy(global_handle.location()); |
| 1311 | } |
| 1312 | |
| 1313 | |
| 1314 | Handle<Object> Isolate::GetPromiseOnStackOnThrow() { |
| 1315 | Handle<Object> undefined = factory()->undefined_value(); |
| 1316 | ThreadLocalTop* tltop = thread_local_top(); |
| 1317 | if (tltop->promise_on_stack_ == NULL) return undefined; |
| 1318 | StackHandler* promise_try = tltop->promise_on_stack_->handler(); |
| 1319 | // Find the top-most try-catch handler. |
| 1320 | StackHandler* handler = StackHandler::FromAddress(Isolate::handler(tltop)); |
| 1321 | do { |
| 1322 | if (handler == promise_try) { |
| 1323 | // Mark the pushed try-catch handler to prevent a later duplicate event |
| 1324 | // triggered with the following reject. |
| 1325 | return tltop->promise_on_stack_->promise(); |
| 1326 | } |
| 1327 | handler = handler->next(); |
| 1328 | // Throwing inside a Promise can be intercepted by an inner try-catch, so |
| 1329 | // we stop at the first try-catch handler. |
| 1330 | } while (handler != NULL && !handler->is_catch()); |
| 1331 | return undefined; |
| 1332 | } |
| 1333 | |
| 1334 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1335 | void Isolate::SetCaptureStackTraceForUncaughtExceptions( |
| 1336 | bool capture, |
| 1337 | int frame_limit, |
| 1338 | StackTrace::StackTraceOptions options) { |
| 1339 | capture_stack_trace_for_uncaught_exceptions_ = capture; |
| 1340 | stack_trace_for_uncaught_exceptions_frame_limit_ = frame_limit; |
| 1341 | stack_trace_for_uncaught_exceptions_options_ = options; |
| 1342 | } |
| 1343 | |
| 1344 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1345 | Handle<Context> Isolate::native_context() { |
| 1346 | return handle(context()->native_context()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1347 | } |
| 1348 | |
| 1349 | |
| 1350 | Handle<Context> Isolate::global_context() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1351 | return handle(context()->global_object()->global_context()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1352 | } |
| 1353 | |
| 1354 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1355 | Handle<Context> Isolate::GetCallingNativeContext() { |
| 1356 | JavaScriptFrameIterator it(this); |
| 1357 | if (debug_->in_debug_scope()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1358 | while (!it.done()) { |
| 1359 | JavaScriptFrame* frame = it.frame(); |
| 1360 | Context* context = Context::cast(frame->context()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1361 | if (context->native_context() == *debug_->debug_context()) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1362 | it.Advance(); |
| 1363 | } else { |
| 1364 | break; |
| 1365 | } |
| 1366 | } |
| 1367 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1368 | if (it.done()) return Handle<Context>::null(); |
| 1369 | JavaScriptFrame* frame = it.frame(); |
| 1370 | Context* context = Context::cast(frame->context()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1371 | return Handle<Context>(context->native_context()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | |
| 1375 | char* Isolate::ArchiveThread(char* to) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1376 | MemCopy(to, reinterpret_cast<char*>(thread_local_top()), |
| 1377 | sizeof(ThreadLocalTop)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1378 | InitializeThreadLocal(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1379 | clear_pending_exception(); |
| 1380 | clear_pending_message(); |
| 1381 | clear_scheduled_exception(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1382 | return to + sizeof(ThreadLocalTop); |
| 1383 | } |
| 1384 | |
| 1385 | |
| 1386 | char* Isolate::RestoreThread(char* from) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1387 | MemCopy(reinterpret_cast<char*>(thread_local_top()), from, |
| 1388 | sizeof(ThreadLocalTop)); |
| 1389 | // This might be just paranoia, but it seems to be needed in case a |
| 1390 | // thread_local_top_ is restored on a separate OS thread. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1391 | #ifdef USE_SIMULATOR |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1392 | thread_local_top()->simulator_ = Simulator::current(this); |
| 1393 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1394 | DCHECK(context() == NULL || context()->IsContext()); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1395 | return from + sizeof(ThreadLocalTop); |
| 1396 | } |
| 1397 | |
| 1398 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1399 | Isolate::ThreadDataTable::ThreadDataTable() |
| 1400 | : list_(NULL) { |
| 1401 | } |
| 1402 | |
| 1403 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1404 | Isolate::ThreadDataTable::~ThreadDataTable() { |
| 1405 | // TODO(svenpanne) The assertion below would fire if an embedder does not |
| 1406 | // cleanly dispose all Isolates before disposing v8, so we are conservative |
| 1407 | // and leave it out for now. |
| 1408 | // DCHECK_EQ(NULL, list_); |
| 1409 | } |
| 1410 | |
| 1411 | |
| 1412 | Isolate::PerIsolateThreadData::~PerIsolateThreadData() { |
| 1413 | #if defined(USE_SIMULATOR) |
| 1414 | delete simulator_; |
| 1415 | #endif |
| 1416 | } |
| 1417 | |
| 1418 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1419 | Isolate::PerIsolateThreadData* |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1420 | Isolate::ThreadDataTable::Lookup(Isolate* isolate, |
| 1421 | ThreadId thread_id) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1422 | for (PerIsolateThreadData* data = list_; data != NULL; data = data->next_) { |
| 1423 | if (data->Matches(isolate, thread_id)) return data; |
| 1424 | } |
| 1425 | return NULL; |
| 1426 | } |
| 1427 | |
| 1428 | |
| 1429 | void Isolate::ThreadDataTable::Insert(Isolate::PerIsolateThreadData* data) { |
| 1430 | if (list_ != NULL) list_->prev_ = data; |
| 1431 | data->next_ = list_; |
| 1432 | list_ = data; |
| 1433 | } |
| 1434 | |
| 1435 | |
| 1436 | void Isolate::ThreadDataTable::Remove(PerIsolateThreadData* data) { |
| 1437 | if (list_ == data) list_ = data->next_; |
| 1438 | if (data->next_ != NULL) data->next_->prev_ = data->prev_; |
| 1439 | if (data->prev_ != NULL) data->prev_->next_ = data->next_; |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1440 | delete data; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1441 | } |
| 1442 | |
| 1443 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1444 | void Isolate::ThreadDataTable::RemoveAllThreads(Isolate* isolate) { |
| 1445 | PerIsolateThreadData* data = list_; |
| 1446 | while (data != NULL) { |
| 1447 | PerIsolateThreadData* next = data->next_; |
| 1448 | if (data->isolate() == isolate) Remove(data); |
| 1449 | data = next; |
| 1450 | } |
| 1451 | } |
| 1452 | |
| 1453 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1454 | #ifdef DEBUG |
| 1455 | #define TRACE_ISOLATE(tag) \ |
| 1456 | do { \ |
| 1457 | if (FLAG_trace_isolates) { \ |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1458 | PrintF("Isolate %p (id %d)" #tag "\n", \ |
| 1459 | reinterpret_cast<void*>(this), id()); \ |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1460 | } \ |
| 1461 | } while (false) |
| 1462 | #else |
| 1463 | #define TRACE_ISOLATE(tag) |
| 1464 | #endif |
| 1465 | |
| 1466 | |
| 1467 | Isolate::Isolate() |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1468 | : embedder_data_(), |
| 1469 | state_(UNINITIALIZED), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1470 | entry_stack_(NULL), |
| 1471 | stack_trace_nesting_level_(0), |
| 1472 | incomplete_message_(NULL), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1473 | bootstrapper_(NULL), |
| 1474 | runtime_profiler_(NULL), |
| 1475 | compilation_cache_(NULL), |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1476 | counters_(NULL), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1477 | code_range_(NULL), |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1478 | logger_(NULL), |
| 1479 | stats_table_(NULL), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1480 | stub_cache_(NULL), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1481 | code_aging_helper_(NULL), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1482 | deoptimizer_data_(NULL), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1483 | materialized_object_store_(NULL), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1484 | capture_stack_trace_for_uncaught_exceptions_(false), |
| 1485 | stack_trace_for_uncaught_exceptions_frame_limit_(0), |
| 1486 | stack_trace_for_uncaught_exceptions_options_(StackTrace::kOverview), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1487 | memory_allocator_(NULL), |
| 1488 | keyed_lookup_cache_(NULL), |
| 1489 | context_slot_cache_(NULL), |
| 1490 | descriptor_lookup_cache_(NULL), |
| 1491 | handle_scope_implementer_(NULL), |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1492 | unicode_cache_(NULL), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1493 | runtime_zone_(this), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1494 | inner_pointer_to_code_cache_(NULL), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1495 | write_iterator_(NULL), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1496 | global_handles_(NULL), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1497 | eternal_handles_(NULL), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1498 | thread_manager_(NULL), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1499 | has_installed_extensions_(false), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1500 | string_tracker_(NULL), |
| 1501 | regexp_stack_(NULL), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1502 | date_cache_(NULL), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1503 | call_descriptor_data_(NULL), |
| 1504 | // TODO(bmeurer) Initialized lazily because it depends on flags; can |
| 1505 | // be fixed once the default isolate cleanup is done. |
| 1506 | random_number_generator_(NULL), |
| 1507 | serializer_enabled_(false), |
| 1508 | has_fatal_error_(false), |
| 1509 | initialized_from_snapshot_(false), |
| 1510 | cpu_profiler_(NULL), |
| 1511 | heap_profiler_(NULL), |
| 1512 | function_entry_hook_(NULL), |
| 1513 | deferred_handles_head_(NULL), |
| 1514 | optimizing_compiler_thread_(NULL), |
| 1515 | sweeper_thread_(NULL), |
| 1516 | num_sweeper_threads_(0), |
| 1517 | stress_deopt_count_(0), |
| 1518 | next_optimization_id_(0), |
| 1519 | use_counter_callback_(NULL) { |
| 1520 | { |
| 1521 | base::LockGuard<base::Mutex> lock_guard(thread_data_table_mutex_.Pointer()); |
| 1522 | CHECK(thread_data_table_); |
| 1523 | } |
| 1524 | id_ = base::NoBarrier_AtomicIncrement(&isolate_counter_, 1); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1525 | TRACE_ISOLATE(constructor); |
| 1526 | |
| 1527 | memset(isolate_addresses_, 0, |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1528 | sizeof(isolate_addresses_[0]) * (kIsolateAddressCount + 1)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1529 | |
| 1530 | heap_.isolate_ = this; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1531 | stack_guard_.isolate_ = this; |
| 1532 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1533 | // ThreadManager is initialized early to support locking an isolate |
| 1534 | // before it is entered. |
| 1535 | thread_manager_ = new ThreadManager(); |
| 1536 | thread_manager_->isolate_ = this; |
| 1537 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1538 | #ifdef DEBUG |
| 1539 | // heap_histograms_ initializes itself. |
| 1540 | memset(&js_spill_information_, 0, sizeof(js_spill_information_)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1541 | #endif |
| 1542 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1543 | handle_scope_data_.Initialize(); |
| 1544 | |
| 1545 | #define ISOLATE_INIT_EXECUTE(type, name, initial_value) \ |
| 1546 | name##_ = (initial_value); |
| 1547 | ISOLATE_INIT_LIST(ISOLATE_INIT_EXECUTE) |
| 1548 | #undef ISOLATE_INIT_EXECUTE |
| 1549 | |
| 1550 | #define ISOLATE_INIT_ARRAY_EXECUTE(type, name, length) \ |
| 1551 | memset(name##_, 0, sizeof(type) * length); |
| 1552 | ISOLATE_INIT_ARRAY_LIST(ISOLATE_INIT_ARRAY_EXECUTE) |
| 1553 | #undef ISOLATE_INIT_ARRAY_EXECUTE |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1554 | |
| 1555 | InitializeLoggingAndCounters(); |
| 1556 | debug_ = new Debug(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1557 | } |
| 1558 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1559 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1560 | void Isolate::TearDown() { |
| 1561 | TRACE_ISOLATE(tear_down); |
| 1562 | |
| 1563 | // Temporarily set this isolate as current so that various parts of |
| 1564 | // the isolate can access it in their destructors without having a |
| 1565 | // direct pointer. We don't use Enter/Exit here to avoid |
| 1566 | // initializing the thread data. |
| 1567 | PerIsolateThreadData* saved_data = CurrentPerIsolateThreadData(); |
| 1568 | Isolate* saved_isolate = UncheckedCurrent(); |
| 1569 | SetIsolateThreadLocals(this, NULL); |
| 1570 | |
| 1571 | Deinit(); |
| 1572 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1573 | { |
| 1574 | base::LockGuard<base::Mutex> lock_guard(thread_data_table_mutex_.Pointer()); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 1575 | thread_data_table_->RemoveAllThreads(this); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1576 | } |
| 1577 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1578 | if (serialize_partial_snapshot_cache_ != NULL) { |
| 1579 | delete[] serialize_partial_snapshot_cache_; |
| 1580 | serialize_partial_snapshot_cache_ = NULL; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1581 | } |
| 1582 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1583 | delete this; |
| 1584 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1585 | // Restore the previous current isolate. |
| 1586 | SetIsolateThreadLocals(saved_isolate, saved_data); |
| 1587 | } |
| 1588 | |
| 1589 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1590 | void Isolate::GlobalTearDown() { |
| 1591 | delete thread_data_table_; |
| 1592 | thread_data_table_ = NULL; |
| 1593 | } |
| 1594 | |
| 1595 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1596 | void Isolate::Deinit() { |
| 1597 | if (state_ == INITIALIZED) { |
| 1598 | TRACE_ISOLATE(deinit); |
| 1599 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1600 | debug()->Unload(); |
| 1601 | |
| 1602 | FreeThreadResources(); |
| 1603 | |
| 1604 | if (concurrent_recompilation_enabled()) { |
| 1605 | optimizing_compiler_thread_->Stop(); |
| 1606 | delete optimizing_compiler_thread_; |
| 1607 | optimizing_compiler_thread_ = NULL; |
| 1608 | } |
| 1609 | |
| 1610 | for (int i = 0; i < num_sweeper_threads_; i++) { |
| 1611 | sweeper_thread_[i]->Stop(); |
| 1612 | delete sweeper_thread_[i]; |
| 1613 | sweeper_thread_[i] = NULL; |
| 1614 | } |
| 1615 | delete[] sweeper_thread_; |
| 1616 | sweeper_thread_ = NULL; |
| 1617 | |
| 1618 | if (FLAG_job_based_sweeping && |
| 1619 | heap_.mark_compact_collector()->sweeping_in_progress()) { |
| 1620 | heap_.mark_compact_collector()->EnsureSweepingCompleted(); |
| 1621 | } |
| 1622 | |
| 1623 | if (FLAG_turbo_stats) GetTStatistics()->Print("TurboFan"); |
| 1624 | if (FLAG_hydrogen_stats) GetHStatistics()->Print("Hydrogen"); |
| 1625 | |
| 1626 | if (FLAG_print_deopt_stress) { |
| 1627 | PrintF(stdout, "=== Stress deopt counter: %u\n", stress_deopt_count_); |
| 1628 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1629 | |
| 1630 | // We must stop the logger before we tear down other components. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1631 | Sampler* sampler = logger_->sampler(); |
| 1632 | if (sampler && sampler->IsActive()) sampler->Stop(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1633 | |
| 1634 | delete deoptimizer_data_; |
| 1635 | deoptimizer_data_ = NULL; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1636 | builtins_.TearDown(); |
| 1637 | bootstrapper_->TearDown(); |
| 1638 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1639 | if (runtime_profiler_ != NULL) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1640 | delete runtime_profiler_; |
| 1641 | runtime_profiler_ = NULL; |
| 1642 | } |
| 1643 | heap_.TearDown(); |
| 1644 | logger_->TearDown(); |
| 1645 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1646 | delete heap_profiler_; |
| 1647 | heap_profiler_ = NULL; |
| 1648 | delete cpu_profiler_; |
| 1649 | cpu_profiler_ = NULL; |
| 1650 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1651 | // The default isolate is re-initializable due to legacy API. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1652 | state_ = UNINITIALIZED; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1653 | } |
| 1654 | } |
| 1655 | |
| 1656 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1657 | void Isolate::PushToPartialSnapshotCache(Object* obj) { |
| 1658 | int length = serialize_partial_snapshot_cache_length(); |
| 1659 | int capacity = serialize_partial_snapshot_cache_capacity(); |
| 1660 | |
| 1661 | if (length >= capacity) { |
| 1662 | int new_capacity = static_cast<int>((capacity + 10) * 1.2); |
| 1663 | Object** new_array = new Object*[new_capacity]; |
| 1664 | for (int i = 0; i < length; i++) { |
| 1665 | new_array[i] = serialize_partial_snapshot_cache()[i]; |
| 1666 | } |
| 1667 | if (capacity != 0) delete[] serialize_partial_snapshot_cache(); |
| 1668 | set_serialize_partial_snapshot_cache(new_array); |
| 1669 | set_serialize_partial_snapshot_cache_capacity(new_capacity); |
| 1670 | } |
| 1671 | |
| 1672 | serialize_partial_snapshot_cache()[length] = obj; |
| 1673 | set_serialize_partial_snapshot_cache_length(length + 1); |
| 1674 | } |
| 1675 | |
| 1676 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1677 | void Isolate::SetIsolateThreadLocals(Isolate* isolate, |
| 1678 | PerIsolateThreadData* data) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1679 | base::Thread::SetThreadLocal(isolate_key_, isolate); |
| 1680 | base::Thread::SetThreadLocal(per_isolate_thread_data_key_, data); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1681 | } |
| 1682 | |
| 1683 | |
| 1684 | Isolate::~Isolate() { |
| 1685 | TRACE_ISOLATE(destructor); |
| 1686 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1687 | // Has to be called while counters_ are still alive |
| 1688 | runtime_zone_.DeleteKeptSegment(); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1689 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1690 | // The entry stack must be empty when we get here. |
| 1691 | DCHECK(entry_stack_ == NULL || entry_stack_->previous_item == NULL); |
| 1692 | |
| 1693 | delete entry_stack_; |
| 1694 | entry_stack_ = NULL; |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1695 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1696 | delete unicode_cache_; |
| 1697 | unicode_cache_ = NULL; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1698 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1699 | delete date_cache_; |
| 1700 | date_cache_ = NULL; |
| 1701 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1702 | delete[] call_descriptor_data_; |
| 1703 | call_descriptor_data_ = NULL; |
| 1704 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1705 | delete regexp_stack_; |
| 1706 | regexp_stack_ = NULL; |
| 1707 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1708 | delete descriptor_lookup_cache_; |
| 1709 | descriptor_lookup_cache_ = NULL; |
| 1710 | delete context_slot_cache_; |
| 1711 | context_slot_cache_ = NULL; |
| 1712 | delete keyed_lookup_cache_; |
| 1713 | keyed_lookup_cache_ = NULL; |
| 1714 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1715 | delete stub_cache_; |
| 1716 | stub_cache_ = NULL; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1717 | delete code_aging_helper_; |
| 1718 | code_aging_helper_ = NULL; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1719 | delete stats_table_; |
| 1720 | stats_table_ = NULL; |
| 1721 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1722 | delete materialized_object_store_; |
| 1723 | materialized_object_store_ = NULL; |
| 1724 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1725 | delete logger_; |
| 1726 | logger_ = NULL; |
| 1727 | |
| 1728 | delete counters_; |
| 1729 | counters_ = NULL; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1730 | |
| 1731 | delete handle_scope_implementer_; |
| 1732 | handle_scope_implementer_ = NULL; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1733 | |
| 1734 | delete compilation_cache_; |
| 1735 | compilation_cache_ = NULL; |
| 1736 | delete bootstrapper_; |
| 1737 | bootstrapper_ = NULL; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1738 | delete inner_pointer_to_code_cache_; |
| 1739 | inner_pointer_to_code_cache_ = NULL; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1740 | delete write_iterator_; |
| 1741 | write_iterator_ = NULL; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1742 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1743 | delete thread_manager_; |
| 1744 | thread_manager_ = NULL; |
| 1745 | |
| 1746 | delete string_tracker_; |
| 1747 | string_tracker_ = NULL; |
| 1748 | |
| 1749 | delete memory_allocator_; |
| 1750 | memory_allocator_ = NULL; |
| 1751 | delete code_range_; |
| 1752 | code_range_ = NULL; |
| 1753 | delete global_handles_; |
| 1754 | global_handles_ = NULL; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1755 | delete eternal_handles_; |
| 1756 | eternal_handles_ = NULL; |
| 1757 | |
| 1758 | delete string_stream_debug_object_cache_; |
| 1759 | string_stream_debug_object_cache_ = NULL; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1760 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1761 | delete external_reference_table_; |
| 1762 | external_reference_table_ = NULL; |
| 1763 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1764 | delete random_number_generator_; |
| 1765 | random_number_generator_ = NULL; |
| 1766 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1767 | delete debug_; |
| 1768 | debug_ = NULL; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1769 | } |
| 1770 | |
| 1771 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1772 | void Isolate::InitializeThreadLocal() { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1773 | thread_local_top_.isolate_ = this; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1774 | thread_local_top_.Initialize(); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1775 | } |
| 1776 | |
| 1777 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1778 | bool Isolate::PropagatePendingExceptionToExternalTryCatch() { |
| 1779 | DCHECK(has_pending_exception()); |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1780 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1781 | bool has_external_try_catch = HasExternalTryCatch(); |
| 1782 | if (!has_external_try_catch) { |
| 1783 | thread_local_top_.external_caught_exception_ = false; |
| 1784 | return true; |
| 1785 | } |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1786 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1787 | bool catchable_by_js = is_catchable_by_javascript(pending_exception()); |
| 1788 | if (catchable_by_js && IsFinallyOnTop()) { |
| 1789 | thread_local_top_.external_caught_exception_ = false; |
| 1790 | return false; |
| 1791 | } |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1792 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1793 | thread_local_top_.external_caught_exception_ = true; |
| 1794 | if (thread_local_top_.pending_exception_ == heap()->termination_exception()) { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1795 | try_catch_handler()->can_continue_ = false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1796 | try_catch_handler()->has_terminated_ = true; |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1797 | try_catch_handler()->exception_ = heap()->null_value(); |
| 1798 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1799 | v8::TryCatch* handler = try_catch_handler(); |
| 1800 | DCHECK(thread_local_top_.pending_message_obj_->IsJSMessageObject() || |
| 1801 | thread_local_top_.pending_message_obj_->IsTheHole()); |
| 1802 | DCHECK(thread_local_top_.pending_message_script_->IsScript() || |
| 1803 | thread_local_top_.pending_message_script_->IsTheHole()); |
| 1804 | handler->can_continue_ = true; |
| 1805 | handler->has_terminated_ = false; |
| 1806 | handler->exception_ = pending_exception(); |
| 1807 | // Propagate to the external try-catch only if we got an actual message. |
| 1808 | if (thread_local_top_.pending_message_obj_->IsTheHole()) return true; |
| 1809 | |
| 1810 | handler->message_obj_ = thread_local_top_.pending_message_obj_; |
| 1811 | handler->message_script_ = thread_local_top_.pending_message_script_; |
| 1812 | handler->message_start_pos_ = thread_local_top_.pending_message_start_pos_; |
| 1813 | handler->message_end_pos_ = thread_local_top_.pending_message_end_pos_; |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1814 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1815 | return true; |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1816 | } |
| 1817 | |
| 1818 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1819 | void Isolate::InitializeLoggingAndCounters() { |
| 1820 | if (logger_ == NULL) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1821 | logger_ = new Logger(this); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1822 | } |
| 1823 | if (counters_ == NULL) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1824 | counters_ = new Counters(this); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1825 | } |
| 1826 | } |
| 1827 | |
| 1828 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1829 | bool Isolate::Init(Deserializer* des) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1830 | DCHECK(state_ != INITIALIZED); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1831 | TRACE_ISOLATE(init); |
| 1832 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1833 | stress_deopt_count_ = FLAG_deopt_every_n_times; |
| 1834 | |
| 1835 | has_fatal_error_ = false; |
| 1836 | |
| 1837 | if (function_entry_hook() != NULL) { |
| 1838 | // When function entry hooking is in effect, we have to create the code |
| 1839 | // stubs from scratch to get entry hooks, rather than loading the previously |
| 1840 | // generated stubs from disk. |
| 1841 | // If this assert fires, the initialization path has regressed. |
| 1842 | DCHECK(des == NULL); |
| 1843 | } |
| 1844 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1845 | // The initialization process does not handle memory exhaustion. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1846 | DisallowAllocationFailure disallow_allocation_failure(this); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1847 | |
| 1848 | memory_allocator_ = new MemoryAllocator(this); |
| 1849 | code_range_ = new CodeRange(this); |
| 1850 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1851 | // Safe after setting Heap::isolate_, and initializing StackGuard |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1852 | heap_.SetStackLimits(); |
| 1853 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 1854 | #define ASSIGN_ELEMENT(CamelName, hacker_name) \ |
| 1855 | isolate_addresses_[Isolate::k##CamelName##Address] = \ |
| 1856 | reinterpret_cast<Address>(hacker_name##_address()); |
| 1857 | FOR_EACH_ISOLATE_ADDRESS_NAME(ASSIGN_ELEMENT) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1858 | #undef ASSIGN_ELEMENT |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1859 | |
| 1860 | string_tracker_ = new StringTracker(); |
| 1861 | string_tracker_->isolate_ = this; |
| 1862 | compilation_cache_ = new CompilationCache(this); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1863 | keyed_lookup_cache_ = new KeyedLookupCache(); |
| 1864 | context_slot_cache_ = new ContextSlotCache(); |
| 1865 | descriptor_lookup_cache_ = new DescriptorLookupCache(); |
| 1866 | unicode_cache_ = new UnicodeCache(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1867 | inner_pointer_to_code_cache_ = new InnerPointerToCodeCache(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1868 | write_iterator_ = new ConsStringIteratorOp(); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1869 | global_handles_ = new GlobalHandles(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1870 | eternal_handles_ = new EternalHandles(); |
| 1871 | bootstrapper_ = new Bootstrapper(this); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1872 | handle_scope_implementer_ = new HandleScopeImplementer(this); |
| 1873 | stub_cache_ = new StubCache(this); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1874 | materialized_object_store_ = new MaterializedObjectStore(this); |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1875 | regexp_stack_ = new RegExpStack(); |
| 1876 | regexp_stack_->isolate_ = this; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1877 | date_cache_ = new DateCache(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1878 | call_descriptor_data_ = |
| 1879 | new CallInterfaceDescriptorData[CallDescriptors::NUMBER_OF_DESCRIPTORS]; |
| 1880 | cpu_profiler_ = new CpuProfiler(this); |
| 1881 | heap_profiler_ = new HeapProfiler(heap()); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1882 | |
| 1883 | // Enable logging before setting up the heap |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1884 | logger_->SetUp(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1885 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1886 | // Initialize other runtime facilities |
| 1887 | #if defined(USE_SIMULATOR) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1888 | #if V8_TARGET_ARCH_ARM || V8_TARGET_ARCH_ARM64 || \ |
| 1889 | V8_TARGET_ARCH_MIPS || V8_TARGET_ARCH_MIPS64 |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1890 | Simulator::Initialize(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1891 | #endif |
| 1892 | #endif |
| 1893 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1894 | code_aging_helper_ = new CodeAgingHelper(); |
| 1895 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1896 | { // NOLINT |
| 1897 | // Ensure that the thread has a valid stack guard. The v8::Locker object |
| 1898 | // will ensure this too, but we don't have to use lockers if we are only |
| 1899 | // using one thread. |
| 1900 | ExecutionAccess lock(this); |
| 1901 | stack_guard_.InitThread(lock); |
| 1902 | } |
| 1903 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1904 | // SetUp the object heap. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1905 | DCHECK(!heap_.HasBeenSetUp()); |
| 1906 | if (!heap_.SetUp()) { |
| 1907 | V8::FatalProcessOutOfMemory("heap setup"); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1908 | return false; |
| 1909 | } |
| 1910 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1911 | deoptimizer_data_ = new DeoptimizerData(memory_allocator_); |
| 1912 | |
| 1913 | const bool create_heap_objects = (des == NULL); |
| 1914 | if (create_heap_objects && !heap_.CreateHeapObjects()) { |
| 1915 | V8::FatalProcessOutOfMemory("heap object creation"); |
| 1916 | return false; |
| 1917 | } |
| 1918 | |
| 1919 | if (create_heap_objects) { |
| 1920 | // Terminate the cache array with the sentinel so we can iterate. |
| 1921 | PushToPartialSnapshotCache(heap_.undefined_value()); |
| 1922 | } |
| 1923 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 1924 | InitializeThreadLocal(); |
| 1925 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1926 | bootstrapper_->Initialize(create_heap_objects); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1927 | builtins_.SetUp(this, create_heap_objects); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1928 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1929 | if (FLAG_log_internal_timer_events) { |
| 1930 | set_event_logger(Logger::DefaultTimerEventsLogger); |
| 1931 | } else { |
| 1932 | set_event_logger(Logger::EmptyTimerEventsLogger); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1933 | } |
| 1934 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1935 | // Set default value if not yet set. |
| 1936 | // TODO(yangguo): move this to ResourceConstraints::ConfigureDefaults |
| 1937 | // once ResourceConstraints becomes an argument to the Isolate constructor. |
| 1938 | if (max_available_threads_ < 1) { |
| 1939 | // Choose the default between 1 and 4. |
| 1940 | max_available_threads_ = |
| 1941 | Max(Min(base::SysInfo::NumberOfProcessors(), 4), 1); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1942 | } |
| 1943 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1944 | if (!FLAG_job_based_sweeping) { |
| 1945 | num_sweeper_threads_ = |
| 1946 | SweeperThread::NumberOfThreads(max_available_threads_); |
| 1947 | } |
| 1948 | |
| 1949 | if (FLAG_trace_hydrogen || FLAG_trace_hydrogen_stubs) { |
| 1950 | PrintF("Concurrent recompilation has been disabled for tracing.\n"); |
| 1951 | } else if (OptimizingCompilerThread::Enabled(max_available_threads_)) { |
| 1952 | optimizing_compiler_thread_ = new OptimizingCompilerThread(this); |
| 1953 | optimizing_compiler_thread_->Start(); |
| 1954 | } |
| 1955 | |
| 1956 | if (num_sweeper_threads_ > 0) { |
| 1957 | sweeper_thread_ = new SweeperThread*[num_sweeper_threads_]; |
| 1958 | for (int i = 0; i < num_sweeper_threads_; i++) { |
| 1959 | sweeper_thread_[i] = new SweeperThread(this); |
| 1960 | sweeper_thread_[i]->Start(); |
| 1961 | } |
| 1962 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1963 | |
| 1964 | // If we are deserializing, read the state into the now-empty heap. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1965 | if (!create_heap_objects) { |
| 1966 | des->Deserialize(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1967 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 1968 | stub_cache_->Initialize(); |
| 1969 | |
| 1970 | // Finish initialization of ThreadLocal after deserialization is done. |
| 1971 | clear_pending_exception(); |
| 1972 | clear_pending_message(); |
| 1973 | clear_scheduled_exception(); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 1974 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1975 | // Deserializing may put strange things in the root array's copy of the |
| 1976 | // stack guard. |
| 1977 | heap_.SetStackLimits(); |
| 1978 | |
Ben Murdoch | db1b438 | 2012-04-26 19:03:50 +0100 | [diff] [blame] | 1979 | // Quiet the heap NaN if needed on target platform. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1980 | if (!create_heap_objects) Assembler::QuietNaN(heap_.nan_value()); |
Ben Murdoch | db1b438 | 2012-04-26 19:03:50 +0100 | [diff] [blame] | 1981 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1982 | runtime_profiler_ = new RuntimeProfiler(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1983 | |
| 1984 | // If we are deserializing, log non-function code objects and compiled |
| 1985 | // functions found in the snapshot. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1986 | if (!create_heap_objects && |
| 1987 | (FLAG_log_code || |
| 1988 | FLAG_ll_prof || |
| 1989 | FLAG_perf_jit_prof || |
| 1990 | FLAG_perf_basic_prof || |
| 1991 | logger_->is_logging_code_events())) { |
| 1992 | HandleScope scope(this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1993 | LOG(this, LogCodeObjects()); |
| 1994 | LOG(this, LogCompiledFunctions()); |
| 1995 | } |
| 1996 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 1997 | CHECK_EQ(static_cast<int>(OFFSET_OF(Isolate, embedder_data_)), |
| 1998 | Internals::kIsolateEmbedderDataOffset); |
| 1999 | CHECK_EQ(static_cast<int>(OFFSET_OF(Isolate, heap_.roots_)), |
| 2000 | Internals::kIsolateRootsOffset); |
| 2001 | CHECK_EQ(static_cast<int>( |
| 2002 | OFFSET_OF(Isolate, heap_.amount_of_external_allocated_memory_)), |
| 2003 | Internals::kAmountOfExternalAllocatedMemoryOffset); |
| 2004 | CHECK_EQ(static_cast<int>(OFFSET_OF( |
| 2005 | Isolate, |
| 2006 | heap_.amount_of_external_allocated_memory_at_last_global_gc_)), |
| 2007 | Internals::kAmountOfExternalAllocatedMemoryAtLastGlobalGCOffset); |
| 2008 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2009 | state_ = INITIALIZED; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2010 | time_millis_at_init_ = base::OS::TimeCurrentMillis(); |
| 2011 | |
| 2012 | if (!create_heap_objects) { |
| 2013 | // Now that the heap is consistent, it's OK to generate the code for the |
| 2014 | // deopt entry table that might have been referred to by optimized code in |
| 2015 | // the snapshot. |
| 2016 | HandleScope scope(this); |
| 2017 | Deoptimizer::EnsureCodeForDeoptimizationEntry( |
| 2018 | this, |
| 2019 | Deoptimizer::LAZY, |
| 2020 | kDeoptTableSerializeEntryCount - 1); |
| 2021 | } |
| 2022 | |
| 2023 | if (!serializer_enabled()) { |
| 2024 | // Ensure that all stubs which need to be generated ahead of time, but |
| 2025 | // cannot be serialized into the snapshot have been generated. |
| 2026 | HandleScope scope(this); |
| 2027 | CodeStub::GenerateFPStubs(this); |
| 2028 | StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(this); |
| 2029 | StubFailureTrampolineStub::GenerateAheadOfTime(this); |
| 2030 | } |
| 2031 | |
| 2032 | initialized_from_snapshot_ = (des != NULL); |
| 2033 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2034 | return true; |
| 2035 | } |
| 2036 | |
| 2037 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 2038 | // Initialized lazily to allow early |
| 2039 | // v8::V8::SetAddHistogramSampleFunction calls. |
| 2040 | StatsTable* Isolate::stats_table() { |
| 2041 | if (stats_table_ == NULL) { |
| 2042 | stats_table_ = new StatsTable; |
| 2043 | } |
| 2044 | return stats_table_; |
| 2045 | } |
| 2046 | |
| 2047 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2048 | void Isolate::Enter() { |
| 2049 | Isolate* current_isolate = NULL; |
| 2050 | PerIsolateThreadData* current_data = CurrentPerIsolateThreadData(); |
| 2051 | if (current_data != NULL) { |
| 2052 | current_isolate = current_data->isolate_; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2053 | DCHECK(current_isolate != NULL); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2054 | if (current_isolate == this) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2055 | DCHECK(Current() == this); |
| 2056 | DCHECK(entry_stack_ != NULL); |
| 2057 | DCHECK(entry_stack_->previous_thread_data == NULL || |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2058 | entry_stack_->previous_thread_data->thread_id().Equals( |
| 2059 | ThreadId::Current())); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2060 | // Same thread re-enters the isolate, no need to re-init anything. |
| 2061 | entry_stack_->entry_count++; |
| 2062 | return; |
| 2063 | } |
| 2064 | } |
| 2065 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2066 | PerIsolateThreadData* data = FindOrAllocatePerThreadDataForThisThread(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2067 | DCHECK(data != NULL); |
| 2068 | DCHECK(data->isolate_ == this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2069 | |
| 2070 | EntryStackItem* item = new EntryStackItem(current_data, |
| 2071 | current_isolate, |
| 2072 | entry_stack_); |
| 2073 | entry_stack_ = item; |
| 2074 | |
| 2075 | SetIsolateThreadLocals(this, data); |
| 2076 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2077 | // In case it's the first time some thread enters the isolate. |
| 2078 | set_thread_id(data->thread_id()); |
| 2079 | } |
| 2080 | |
| 2081 | |
| 2082 | void Isolate::Exit() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2083 | DCHECK(entry_stack_ != NULL); |
| 2084 | DCHECK(entry_stack_->previous_thread_data == NULL || |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 2085 | entry_stack_->previous_thread_data->thread_id().Equals( |
| 2086 | ThreadId::Current())); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2087 | |
| 2088 | if (--entry_stack_->entry_count > 0) return; |
| 2089 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2090 | DCHECK(CurrentPerIsolateThreadData() != NULL); |
| 2091 | DCHECK(CurrentPerIsolateThreadData()->isolate_ == this); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2092 | |
| 2093 | // Pop the stack. |
| 2094 | EntryStackItem* item = entry_stack_; |
| 2095 | entry_stack_ = item->previous_item; |
| 2096 | |
| 2097 | PerIsolateThreadData* previous_thread_data = item->previous_thread_data; |
| 2098 | Isolate* previous_isolate = item->previous_isolate; |
| 2099 | |
| 2100 | delete item; |
| 2101 | |
| 2102 | // Reinit the current thread for the isolate it was running before this one. |
| 2103 | SetIsolateThreadLocals(previous_isolate, previous_thread_data); |
| 2104 | } |
| 2105 | |
| 2106 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2107 | void Isolate::LinkDeferredHandles(DeferredHandles* deferred) { |
| 2108 | deferred->next_ = deferred_handles_head_; |
| 2109 | if (deferred_handles_head_ != NULL) { |
| 2110 | deferred_handles_head_->previous_ = deferred; |
| 2111 | } |
| 2112 | deferred_handles_head_ = deferred; |
| 2113 | } |
| 2114 | |
| 2115 | |
| 2116 | void Isolate::UnlinkDeferredHandles(DeferredHandles* deferred) { |
| 2117 | #ifdef DEBUG |
| 2118 | // In debug mode assert that the linked list is well-formed. |
| 2119 | DeferredHandles* deferred_iterator = deferred; |
| 2120 | while (deferred_iterator->previous_ != NULL) { |
| 2121 | deferred_iterator = deferred_iterator->previous_; |
| 2122 | } |
| 2123 | DCHECK(deferred_handles_head_ == deferred_iterator); |
| 2124 | #endif |
| 2125 | if (deferred_handles_head_ == deferred) { |
| 2126 | deferred_handles_head_ = deferred_handles_head_->next_; |
| 2127 | } |
| 2128 | if (deferred->next_ != NULL) { |
| 2129 | deferred->next_->previous_ = deferred->previous_; |
| 2130 | } |
| 2131 | if (deferred->previous_ != NULL) { |
| 2132 | deferred->previous_->next_ = deferred->next_; |
| 2133 | } |
| 2134 | } |
| 2135 | |
| 2136 | |
| 2137 | HStatistics* Isolate::GetHStatistics() { |
| 2138 | if (hstatistics() == NULL) set_hstatistics(new HStatistics()); |
| 2139 | return hstatistics(); |
| 2140 | } |
| 2141 | |
| 2142 | |
| 2143 | HStatistics* Isolate::GetTStatistics() { |
| 2144 | if (tstatistics() == NULL) set_tstatistics(new HStatistics()); |
| 2145 | return tstatistics(); |
| 2146 | } |
| 2147 | |
| 2148 | |
| 2149 | HTracer* Isolate::GetHTracer() { |
| 2150 | if (htracer() == NULL) set_htracer(new HTracer(id())); |
| 2151 | return htracer(); |
| 2152 | } |
| 2153 | |
| 2154 | |
| 2155 | CodeTracer* Isolate::GetCodeTracer() { |
| 2156 | if (code_tracer() == NULL) set_code_tracer(new CodeTracer(id())); |
| 2157 | return code_tracer(); |
| 2158 | } |
| 2159 | |
| 2160 | |
| 2161 | Map* Isolate::get_initial_js_array_map(ElementsKind kind) { |
| 2162 | Context* native_context = context()->native_context(); |
| 2163 | Object* maybe_map_array = native_context->js_array_maps(); |
| 2164 | if (!maybe_map_array->IsUndefined()) { |
| 2165 | Object* maybe_transitioned_map = |
| 2166 | FixedArray::cast(maybe_map_array)->get(kind); |
| 2167 | if (!maybe_transitioned_map->IsUndefined()) { |
| 2168 | return Map::cast(maybe_transitioned_map); |
| 2169 | } |
| 2170 | } |
| 2171 | return NULL; |
| 2172 | } |
| 2173 | |
| 2174 | |
| 2175 | bool Isolate::use_crankshaft() const { |
| 2176 | return FLAG_crankshaft && |
| 2177 | !serializer_enabled_ && |
| 2178 | CpuFeatures::SupportsCrankshaft(); |
| 2179 | } |
| 2180 | |
| 2181 | |
| 2182 | bool Isolate::IsFastArrayConstructorPrototypeChainIntact() { |
| 2183 | Map* root_array_map = |
| 2184 | get_initial_js_array_map(GetInitialFastElementsKind()); |
| 2185 | DCHECK(root_array_map != NULL); |
| 2186 | JSObject* initial_array_proto = JSObject::cast(*initial_array_prototype()); |
| 2187 | |
| 2188 | // Check that the array prototype hasn't been altered WRT empty elements. |
| 2189 | if (root_array_map->prototype() != initial_array_proto) return false; |
| 2190 | if (initial_array_proto->elements() != heap()->empty_fixed_array()) { |
| 2191 | return false; |
| 2192 | } |
| 2193 | |
| 2194 | // Check that the object prototype hasn't been altered WRT empty elements. |
| 2195 | JSObject* initial_object_proto = JSObject::cast(*initial_object_prototype()); |
| 2196 | PrototypeIterator iter(this, initial_array_proto); |
| 2197 | if (iter.IsAtEnd() || iter.GetCurrent() != initial_object_proto) { |
| 2198 | return false; |
| 2199 | } |
| 2200 | if (initial_object_proto->elements() != heap()->empty_fixed_array()) { |
| 2201 | return false; |
| 2202 | } |
| 2203 | |
| 2204 | iter.Advance(); |
| 2205 | return iter.IsAtEnd(); |
| 2206 | } |
| 2207 | |
| 2208 | |
| 2209 | CallInterfaceDescriptorData* Isolate::call_descriptor_data(int index) { |
| 2210 | DCHECK(0 <= index && index < CallDescriptors::NUMBER_OF_DESCRIPTORS); |
| 2211 | return &call_descriptor_data_[index]; |
| 2212 | } |
| 2213 | |
| 2214 | |
| 2215 | Object* Isolate::FindCodeObject(Address a) { |
| 2216 | return inner_pointer_to_code_cache()->GcSafeFindCodeForInnerPointer(a); |
| 2217 | } |
| 2218 | |
| 2219 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2220 | #ifdef DEBUG |
| 2221 | #define ISOLATE_FIELD_OFFSET(type, name, ignored) \ |
| 2222 | const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_); |
| 2223 | ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET) |
| 2224 | ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET) |
| 2225 | #undef ISOLATE_FIELD_OFFSET |
| 2226 | #endif |
| 2227 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame^] | 2228 | |
| 2229 | Handle<JSObject> Isolate::GetSymbolRegistry() { |
| 2230 | if (heap()->symbol_registry()->IsUndefined()) { |
| 2231 | Handle<Map> map = factory()->NewMap(JS_OBJECT_TYPE, JSObject::kHeaderSize); |
| 2232 | Handle<JSObject> registry = factory()->NewJSObjectFromMap(map); |
| 2233 | heap()->set_symbol_registry(*registry); |
| 2234 | |
| 2235 | static const char* nested[] = { |
| 2236 | "for", "for_api", "for_intern", "keyFor", "private_api", "private_intern" |
| 2237 | }; |
| 2238 | for (unsigned i = 0; i < arraysize(nested); ++i) { |
| 2239 | Handle<String> name = factory()->InternalizeUtf8String(nested[i]); |
| 2240 | Handle<JSObject> obj = factory()->NewJSObjectFromMap(map); |
| 2241 | JSObject::NormalizeProperties(obj, KEEP_INOBJECT_PROPERTIES, 8); |
| 2242 | JSObject::SetProperty(registry, name, obj, STRICT).Assert(); |
| 2243 | } |
| 2244 | } |
| 2245 | return Handle<JSObject>::cast(factory()->symbol_registry()); |
| 2246 | } |
| 2247 | |
| 2248 | |
| 2249 | void Isolate::AddCallCompletedCallback(CallCompletedCallback callback) { |
| 2250 | for (int i = 0; i < call_completed_callbacks_.length(); i++) { |
| 2251 | if (callback == call_completed_callbacks_.at(i)) return; |
| 2252 | } |
| 2253 | call_completed_callbacks_.Add(callback); |
| 2254 | } |
| 2255 | |
| 2256 | |
| 2257 | void Isolate::RemoveCallCompletedCallback(CallCompletedCallback callback) { |
| 2258 | for (int i = 0; i < call_completed_callbacks_.length(); i++) { |
| 2259 | if (callback == call_completed_callbacks_.at(i)) { |
| 2260 | call_completed_callbacks_.Remove(i); |
| 2261 | } |
| 2262 | } |
| 2263 | } |
| 2264 | |
| 2265 | |
| 2266 | void Isolate::FireCallCompletedCallback() { |
| 2267 | bool has_call_completed_callbacks = !call_completed_callbacks_.is_empty(); |
| 2268 | bool run_microtasks = autorun_microtasks() && pending_microtask_count(); |
| 2269 | if (!has_call_completed_callbacks && !run_microtasks) return; |
| 2270 | |
| 2271 | if (!handle_scope_implementer()->CallDepthIsZero()) return; |
| 2272 | if (run_microtasks) RunMicrotasks(); |
| 2273 | // Fire callbacks. Increase call depth to prevent recursive callbacks. |
| 2274 | v8::Isolate::SuppressMicrotaskExecutionScope suppress( |
| 2275 | reinterpret_cast<v8::Isolate*>(this)); |
| 2276 | for (int i = 0; i < call_completed_callbacks_.length(); i++) { |
| 2277 | call_completed_callbacks_.at(i)(); |
| 2278 | } |
| 2279 | } |
| 2280 | |
| 2281 | |
| 2282 | void Isolate::EnqueueMicrotask(Handle<Object> microtask) { |
| 2283 | DCHECK(microtask->IsJSFunction() || microtask->IsCallHandlerInfo()); |
| 2284 | Handle<FixedArray> queue(heap()->microtask_queue(), this); |
| 2285 | int num_tasks = pending_microtask_count(); |
| 2286 | DCHECK(num_tasks <= queue->length()); |
| 2287 | if (num_tasks == 0) { |
| 2288 | queue = factory()->NewFixedArray(8); |
| 2289 | heap()->set_microtask_queue(*queue); |
| 2290 | } else if (num_tasks == queue->length()) { |
| 2291 | queue = FixedArray::CopySize(queue, num_tasks * 2); |
| 2292 | heap()->set_microtask_queue(*queue); |
| 2293 | } |
| 2294 | DCHECK(queue->get(num_tasks)->IsUndefined()); |
| 2295 | queue->set(num_tasks, *microtask); |
| 2296 | set_pending_microtask_count(num_tasks + 1); |
| 2297 | } |
| 2298 | |
| 2299 | |
| 2300 | void Isolate::RunMicrotasks() { |
| 2301 | // %RunMicrotasks may be called in mjsunit tests, which violates |
| 2302 | // this assertion, hence the check for --allow-natives-syntax. |
| 2303 | // TODO(adamk): However, this also fails some layout tests. |
| 2304 | // |
| 2305 | // DCHECK(FLAG_allow_natives_syntax || |
| 2306 | // handle_scope_implementer()->CallDepthIsZero()); |
| 2307 | |
| 2308 | // Increase call depth to prevent recursive callbacks. |
| 2309 | v8::Isolate::SuppressMicrotaskExecutionScope suppress( |
| 2310 | reinterpret_cast<v8::Isolate*>(this)); |
| 2311 | |
| 2312 | while (pending_microtask_count() > 0) { |
| 2313 | HandleScope scope(this); |
| 2314 | int num_tasks = pending_microtask_count(); |
| 2315 | Handle<FixedArray> queue(heap()->microtask_queue(), this); |
| 2316 | DCHECK(num_tasks <= queue->length()); |
| 2317 | set_pending_microtask_count(0); |
| 2318 | heap()->set_microtask_queue(heap()->empty_fixed_array()); |
| 2319 | |
| 2320 | for (int i = 0; i < num_tasks; i++) { |
| 2321 | HandleScope scope(this); |
| 2322 | Handle<Object> microtask(queue->get(i), this); |
| 2323 | if (microtask->IsJSFunction()) { |
| 2324 | Handle<JSFunction> microtask_function = |
| 2325 | Handle<JSFunction>::cast(microtask); |
| 2326 | SaveContext save(this); |
| 2327 | set_context(microtask_function->context()->native_context()); |
| 2328 | MaybeHandle<Object> maybe_exception; |
| 2329 | MaybeHandle<Object> result = |
| 2330 | Execution::TryCall(microtask_function, factory()->undefined_value(), |
| 2331 | 0, NULL, &maybe_exception); |
| 2332 | // If execution is terminating, just bail out. |
| 2333 | Handle<Object> exception; |
| 2334 | if (result.is_null() && maybe_exception.is_null()) { |
| 2335 | // Clear out any remaining callbacks in the queue. |
| 2336 | heap()->set_microtask_queue(heap()->empty_fixed_array()); |
| 2337 | set_pending_microtask_count(0); |
| 2338 | return; |
| 2339 | } |
| 2340 | } else { |
| 2341 | Handle<CallHandlerInfo> callback_info = |
| 2342 | Handle<CallHandlerInfo>::cast(microtask); |
| 2343 | v8::MicrotaskCallback callback = |
| 2344 | v8::ToCData<v8::MicrotaskCallback>(callback_info->callback()); |
| 2345 | void* data = v8::ToCData<void*>(callback_info->data()); |
| 2346 | callback(data); |
| 2347 | } |
| 2348 | } |
| 2349 | } |
| 2350 | } |
| 2351 | |
| 2352 | |
| 2353 | void Isolate::SetUseCounterCallback(v8::Isolate::UseCounterCallback callback) { |
| 2354 | DCHECK(!use_counter_callback_); |
| 2355 | use_counter_callback_ = callback; |
| 2356 | } |
| 2357 | |
| 2358 | |
| 2359 | void Isolate::CountUsage(v8::Isolate::UseCounterFeature feature) { |
| 2360 | if (use_counter_callback_) { |
| 2361 | use_counter_callback_(reinterpret_cast<v8::Isolate*>(this), feature); |
| 2362 | } |
| 2363 | } |
| 2364 | |
| 2365 | |
| 2366 | bool StackLimitCheck::JsHasOverflowed() const { |
| 2367 | StackGuard* stack_guard = isolate_->stack_guard(); |
| 2368 | #ifdef USE_SIMULATOR |
| 2369 | // The simulator uses a separate JS stack. |
| 2370 | Address jssp_address = Simulator::current(isolate_)->get_sp(); |
| 2371 | uintptr_t jssp = reinterpret_cast<uintptr_t>(jssp_address); |
| 2372 | if (jssp < stack_guard->real_jslimit()) return true; |
| 2373 | #endif // USE_SIMULATOR |
| 2374 | return GetCurrentStackPosition() < stack_guard->real_climit(); |
| 2375 | } |
| 2376 | |
| 2377 | |
| 2378 | bool PostponeInterruptsScope::Intercept(StackGuard::InterruptFlag flag) { |
| 2379 | // First check whether the previous scope intercepts. |
| 2380 | if (prev_ && prev_->Intercept(flag)) return true; |
| 2381 | // Then check whether this scope intercepts. |
| 2382 | if ((flag & intercept_mask_)) { |
| 2383 | intercepted_flags_ |= flag; |
| 2384 | return true; |
| 2385 | } |
| 2386 | return false; |
| 2387 | } |
| 2388 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 2389 | } } // namespace v8::internal |