Drop GetCurrentThreadId() and TerminateExecution(int) from the external API.

R=dcarney@chromium.org

Review URL: https://codereview.chromium.org/23538007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16570 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

include/v8.h

@@ -4591,40 +4591,6 @@ class V8_EXPORT V8 {
   static intptr_t AdjustAmountOfExternalAllocatedMemory(
       intptr_t change_in_bytes);
 
-  /**
-   * Retrieve the V8 thread id of the calling thread.
-   *
-   * The thread id for a thread should only be retrieved after the V8
-   * lock has been acquired with a Locker object with that thread.
-   */
-  static int GetCurrentThreadId();
-
-  /**
-   * Forcefully terminate execution of a JavaScript thread.  This can
-   * be used to terminate long-running scripts.
-   *
-   * TerminateExecution should only be called when then V8 lock has
-   * been acquired with a Locker object.  Therefore, in order to be
-   * able to terminate long-running threads, preemption must be
-   * enabled to allow the user of TerminateExecution to acquire the
-   * lock.
-   *
-   * The termination is achieved by throwing an exception that is
-   * uncatchable by JavaScript exception handlers.  Termination
-   * exceptions act as if they were caught by a C++ TryCatch exception
-   * handler.  If forceful termination is used, any C++ TryCatch
-   * exception handler that catches an exception should check if that
-   * exception is a termination exception and immediately return if
-   * that is the case.  Returning immediately in that case will
-   * continue the propagation of the termination exception if needed.
-   *
-   * The thread id passed to TerminateExecution must have been
-   * obtained by calling GetCurrentThreadId on the thread in question.
-   *
-   * \param thread_id The thread id of the thread to terminate.
-   */
-  static void TerminateExecution(int thread_id);
-
   /**
    * Forcefully terminate the current thread of JavaScript execution
    * in the given isolate. If no isolate is provided, the default

src/api.cc

@@ -6772,29 +6772,6 @@ void V8::RemoveCallCompletedCallback(CallCompletedCallback callback) {
 }
 
 
-int V8::GetCurrentThreadId() {
-  i::Isolate* isolate = i::Isolate::Current();
-  EnsureInitializedForIsolate(isolate, "V8::GetCurrentThreadId()");
-  return isolate->thread_id().ToInteger();
-}
-
-
-void V8::TerminateExecution(int thread_id) {
-  i::Isolate* isolate = i::Isolate::Current();
-  if (!isolate->IsInitialized()) return;
-  API_ENTRY_CHECK(isolate, "V8::TerminateExecution()");
-  // 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.
-  i::ThreadId internal_tid = i::ThreadId::FromInteger(thread_id);
-  if (isolate->thread_id().Equals(internal_tid)) {
-    isolate->stack_guard()->TerminateExecution();
-  } else {
-    isolate->thread_manager()->TerminateExecution(internal_tid);
-  }
-}
-
-
 void V8::TerminateExecution(Isolate* isolate) {
   // If no isolate is supplied, use the default isolate.
   if (isolate != NULL) {

test/cctest/test-thread-termination.cc

@@ -192,73 +192,6 @@ TEST(TerminateOnlyV8ThreadFromOtherThread) {
 }
 
 
-class LoopingThread : public v8::internal::Thread {
- public:
-  LoopingThread() : Thread("LoopingThread") { }
-  void Run() {
-    v8::Locker locker(CcTest::default_isolate());
-    v8::HandleScope scope(CcTest::default_isolate());
-    v8_thread_id_ = v8::V8::GetCurrentThreadId();
-    v8::Handle<v8::ObjectTemplate> global =
-        CreateGlobalTemplate(Signal, DoLoop);
-    v8::Handle<v8::Context> context =
-        v8::Context::New(v8::Isolate::GetCurrent(), NULL, global);
-    v8::Context::Scope context_scope(context);
-    CHECK(!v8::V8::IsExecutionTerminating());
-    // Run a loop that will be infinite if thread termination does not work.
-    v8::Handle<v8::String> source =
-        v8::String::New("try { loop(); fail(); } catch(e) { fail(); }");
-    v8::Script::Compile(source)->Run();
-  }
-
-  int GetV8ThreadId() { return v8_thread_id_; }
-
- private:
-  int v8_thread_id_;
-};
-
-
-// Test that multiple threads using default isolate can be terminated
-// from another thread when using Lockers and preemption.
-TEST(TerminateMultipleV8ThreadsDefaultIsolate) {
-  {
-    v8::Locker locker(CcTest::default_isolate());
-    v8::V8::Initialize();
-    v8::Locker::StartPreemption(1);
-    semaphore = new v8::internal::Semaphore(0);
-  }
-  const int kThreads = 2;
-  i::List<LoopingThread*> threads(kThreads);
-  for (int i = 0; i < kThreads; i++) {
-    threads.Add(new LoopingThread());
-  }
-  for (int i = 0; i < kThreads; i++) {
-    threads[i]->Start();
-  }
-  // Wait until all threads have signaled the semaphore.
-  for (int i = 0; i < kThreads; i++) {
-    semaphore->Wait();
-  }
-  {
-    v8::Locker locker(CcTest::default_isolate());
-    for (int i = 0; i < kThreads; i++) {
-      v8::V8::TerminateExecution(threads[i]->GetV8ThreadId());
-    }
-  }
-  for (int i = 0; i < kThreads; i++) {
-    threads[i]->Join();
-    delete threads[i];
-  }
-  {
-    v8::Locker locker(CcTest::default_isolate());
-    v8::Locker::StopPreemption();
-  }
-
-  delete semaphore;
-  semaphore = NULL;
-}
-
-
 int call_count = 0;