Remove unused thread pool from standalone VM binary.

runtime/bin/thread_pool.cc

-// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-#include "bin/thread_pool.h"
-
-#include "bin/thread.h"
-
-
-bool ThreadPool::InsertTask(Task task) {
-  TaskQueueEntry* entry = new TaskQueueEntry(task);
-  MonitorLocker locker(&monitor_);
-  if (terminate_) return false;
-  if (head_ == NULL) {
-    head_ = entry;
-    tail_ = entry;
-    locker.Notify();
-  } else {
-    tail_->set_next(entry);
-    tail_ = entry;
-  }
-  return true;
-}
-
-
-ThreadPool::TaskQueueEntry* ThreadPool::WaitForTask() {
-  MonitorLocker locker(&monitor_);
-  if (terminate_ && (drain_flag_ == kDoNotDrain || head_ == NULL)) {
-    return NULL;
-  }
-  TaskQueueEntry* result = head_;
-  while (result == NULL) {
-    locker.Wait();
-    if (terminate_ && (drain_flag_ == kDoNotDrain || head_ == NULL)) {
-      return NULL;
-    }
-    result = head_;
-  }
-  head_ = result->next();
-  ASSERT(head_ != NULL || tail_ == result);
-  return result;
-}
-
-
-void ThreadPool::Start() {
-  MonitorLocker locker(&monitor_);
-  terminate_ = false;
-  for (int i = 0; i < initial_number_of_threads_; i++) {
-    int result = dart::Thread::Start(&ThreadPool::Main,
-                                     reinterpret_cast<uword>(this));
-    if (result != 0) {
-      FATAL1("Failed to start thread pool thread %d", result);
-    }
-    number_of_threads_++;
-  }
-}
-
-
-void ThreadPool::Shutdown(DrainFlag drain_flag) {
-  MonitorLocker locker(&monitor_);
-  terminate_ = true;
-  drain_flag_ = drain_flag;
-  locker.NotifyAll();
-  int shutdown_count = 0;
-  while (number_of_threads_ > 0 && shutdown_count < 10) {
-    locker.Wait(1000);
-    shutdown_count++;
-    if (number_of_threads_ > 0) {
-      fprintf(stderr,
-              "Waiting for thread pool termination, %d running threads\n",
-              number_of_threads_);
-    }
-  }
-  if (number_of_threads_ > 0) {
-      fprintf(stderr,
-              "Failed thread pool termination, still %d running threads\n",
-              number_of_threads_);
-  }
-}
-
-
-void ThreadPool::ThreadTerminated() {
-  MonitorLocker locker(&monitor_);
-  number_of_threads_--;
-  locker.Notify();
-}
-
-
-void ThreadPool::Main(uword args) {
-  if (Dart_IsVMFlagSet("trace_thread_pool")) {
-    printf("Thread pool thread started\n");
-  }
-  ThreadPool* pool = reinterpret_cast<ThreadPool*>(args);
-  while (true) {
-    if (Dart_IsVMFlagSet("trace_thread_pool")) {
-      printf("Waiting for task\n");
-    }
-    TaskQueueEntry* task = pool->WaitForTask();
-    if (task == NULL) break;
-    (*(pool->task_handler_))(task->task());
-  }
-  pool->ThreadTerminated();
-};