Add support for forceful termination of JavaScript execution.

src/api.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 57 matching lines @@
 
 #define EXCEPTION_BAILOUT_CHECK(value)                                         \
   do {                                                                         \
     thread_local.DecrementCallDepth();                                         \
     if (has_pending_exception) {                                               \
       if (thread_local.CallDepthIsZero() && i::Top::is_out_of_memory()) {      \
         if (!thread_local.IgnoreOutOfMemory())                                 \
           i::V8::FatalProcessOutOfMemory(NULL);                                \
       }                                                                        \
       bool call_depth_is_zero = thread_local.CallDepthIsZero();                \
-      i::Top::optional_reschedule_exception(call_depth_is_zero);               \
+      i::Top::OptionalRescheduleException(call_depth_is_zero, false);        \
       return value;                                                            \
     }                                                                          \
   } while (false)
 
 
 #define API_ENTRY_CHECK(msg)                                                   \
   do {                                                                         \
     if (v8::Locker::IsActive()) {                                              \
       ApiCheck(i::ThreadManager::IsLockedByCurrentThread(),                    \
                msg,                                                            \
@@ skipping 1112 matching lines @@
 v8::TryCatch::~TryCatch() {
   i::Top::UnregisterTryCatchHandler(this);
 }
 
 
 bool v8::TryCatch::HasCaught() const {
   return !reinterpret_cast<i::Object*>(exception_)->IsTheHole();
 }
 
 
+bool v8::TryCatch::CanContinue() const {
+  return can_continue_;
+}
+
+
 v8::Local<Value> v8::TryCatch::Exception() const {
   if (HasCaught()) {
     // Check for out of memory exception.
     i::Object* exception = reinterpret_cast<i::Object*>(exception_);
     return v8::Utils::ToLocal(i::Handle<i::Object>(exception));
   } else {
     return v8::Local<Value>();
   }
 }
 
@@ skipping 2126 matching lines @@
 }
 
 
 int V8::GetLogLines(int from_pos, char* dest_buf, int max_size) {
 #ifdef ENABLE_LOGGING_AND_PROFILING
   return i::Logger::GetLogLines(from_pos, dest_buf, max_size);
 #endif
   return 0;
 }
 
+
+int V8::GetCurrentThreadId() {
+  API_ENTRY_CHECK("V8::GetCurrentThreadId()");
+  EnsureInitialized("V8::GetCurrentThreadId()");
+  return i::Top::thread_id();
+}
+
+
+void V8::TerminateExecution(int thread_id) {
+  if (!i::V8::IsRunning()) return;
+  API_ENTRY_CHECK("V8::GetCurrentThreadId()");
+  // If the thread_id identifies the current thread just terminate
+  // execution right away.  Otherwise, ask the thread manager to
+  // terminate the thread with the given id if any.
+  if (thread_id == i::Top::thread_id()) {
+    i::StackGuard::TerminateExecution();
+  } else {
+    i::ThreadManager::TerminateExecution(thread_id);
+  }
+}
+
+
+void V8::TerminateExecution() {
+  if (!i::V8::IsRunning()) return;
+  i::StackGuard::TerminateExecution();
+}
+
+
 String::Utf8Value::Utf8Value(v8::Handle<v8::Value> obj) {
   EnsureInitialized("v8::String::Utf8Value::Utf8Value()");
   if (obj.IsEmpty()) {
     str_ = NULL;
     length_ = 0;
     return;
   }
   ENTER_V8;
   HandleScope scope;
   TryCatch try_catch;
@@ skipping 350 matching lines @@
       reinterpret_cast<HandleScopeImplementer*>(storage);
   List<void**>* blocks_of_archived_thread = thread_local->Blocks();
   v8::ImplementationUtilities::HandleScopeData* handle_data_of_archived_thread =
       &thread_local->handle_scope_data_;
   Iterate(v, blocks_of_archived_thread, handle_data_of_archived_thread);
 
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal