Keep only base/extractor.[cc|h].

base/thread.h

-// Copyright 2004-2009 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-//
-// Defines interface Runnable and class Thread.
-//
-// Thread encapsulates win32 primitives of creating and
-// manipulating win32 threads.
-
-#ifndef OMAHA_COMMON_THREAD_H__
-#define OMAHA_COMMON_THREAD_H__
-
-#include "omaha/base/synchronized.h"
-
-namespace omaha {
-
-// Any class which requires part of its execution in a
-// separate thread should be derived from Runnable interface.
-// It can have member variable of type Thread. When the
-// thread needs to be launched one does something like that.
-//  A::func() {
-//    thread_.start(this);
-//  }
-
-class Runnable {
-  friend class Thread;
- protected:
-  Runnable() {}
-  virtual ~Runnable() {}
-  virtual void Run() = 0;
- private:
-  DISALLOW_EVIL_CONSTRUCTORS(Runnable);
-};
-
-// Any class devived from this one will be able to call
-// Thread function QueueApc and have the function OnApc get
-// executed in context of this thread. Thread must be in alertable
-// state to be able to execute the apc function.
-class ApcReceiver {
-  friend class Thread;
- protected:
-  ApcReceiver() {}
-  virtual ~ApcReceiver() {}
-  virtual void OnApc(ULONG_PTR param) = 0;
- private:
-  DISALLOW_EVIL_CONSTRUCTORS(ApcReceiver);
-};
-
-// This class encapsulates win32 thread management functions.
-class Thread {
- public:
-  Thread();
-  ~Thread();
-
-  bool Start(Runnable* runner);
-  bool Suspend();
-  bool Resume();
-  bool Terminate(int exit_code);
-  bool SetPriority(int priority);
-  bool GetPriority(int* priority) const;
-  DWORD GetThreadId() const;
-  HANDLE GetThreadHandle() const;
-
-  // Checks if the thread is running.
-  bool Running() const;
-
-  // Waits until thread exits.
-  bool WaitTillExit(DWORD msec) const;
-
-  // Queues an APC to the ApcReceiver.
-  bool QueueApc(ApcReceiver* receiver, ULONG_PTR param);
-
-  // Posts message to a thread.
-  bool PostMessage(UINT msg, WPARAM wparam, LPARAM lparam);
- private:
-  static DWORD __stdcall Prepare(void* thisPointer);      // Thread proc.
-  static void __stdcall APCProc(ULONG_PTR dwParam);
-
-  Runnable* runner_;     // Interface to work with.
-  HANDLE    thread_;
-  DWORD     thread_id_;
-  Gate start_gate_;     // Synchronizes the thread start.
-
-  struct ApcInfo {
-    ApcReceiver* receiver_;
-    ULONG_PTR    param_;
-  };
-
-  DISALLOW_EVIL_CONSTRUCTORS(Thread);
-};
-
-}  // namespace omaha
-
-#endif  // OMAHA_COMMON_THREAD_H__