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

tools/goopdump/process_monitor.h

-// Copyright 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.
-// ========================================================================
-//
-// Provides a class (ProcessMonitor) to watch for Win32 process names and fire
-// callback events (via the ProcessMonitorCallbackInterface) when processes are
-// created/exited.
-
-#ifndef OMAHA_TOOLS_SRC_GOOPDUMP_PROCESS_MONITOR_H__
-#define OMAHA_TOOLS_SRC_GOOPDUMP_PROCESS_MONITOR_H__
-
-#include <windows.h>
-#include <atlstr.h>
-#include <map>
-#include <vector>
-
-#include "omaha/common/scoped_any.h"
-#include "omaha/common/synchronized.h"
-
-namespace omaha {
-
-// Interface for users of the ProcessMonitor class to receive events when a
-// process matching their desired pattern is created or exits.
-class ProcessMonitorCallbackInterface {
- public:
-  ProcessMonitorCallbackInterface() {}
-  virtual ~ProcessMonitorCallbackInterface() {}
-
-  // Called when a new process is found that matches the pattern.  The pattern
-  // that matched is passed in as process_pattern.
-  virtual void OnProcessAdded(DWORD process_id,
-                              const CString& process_pattern) = 0;
-
-  // Called when a process that was previously found has exited.
-  virtual void OnProcessRemoved(DWORD process_id) = 0;
-
- private:
-  DISALLOW_EVIL_CONSTRUCTORS(ProcessMonitorCallbackInterface);
-};
-
-// This class creates a thread to monitor running processes for particular
-// process names.  Fires events via ProcessMonitorCallbackInterface when a new
-// process is detected that matches a name pattern and also when those processes
-// exit.
-// This class uses polling to look for the processes since the only way to get
-// event notification of process creation is to create a driver.
-class ProcessMonitor {
- public:
-  typedef std::map<HANDLE, DWORD> MapHandleToDword;
-  typedef MapHandleToDword::iterator MapHandleToDwordIterator;
-
-  ProcessMonitor();
-  ~ProcessMonitor();
-
-  // Starts the monitoring process to look for processes that match
-  // process_name_pattern and fire events via the callback.
-  HRESULT Start(ProcessMonitorCallbackInterface* callback,
-                const TCHAR* process_name_pattern);
-
-  // Starts the monitoring process with multiple patterns.
-  HRESULT StartWithPatterns(ProcessMonitorCallbackInterface* callback,
-                            const std::vector<CString>& process_name_patterns);
-
-  // Stops the monitoring process and cleans up.
-  HRESULT Stop();
-
- private:
-  // Thread procedure for monitoring the processes in the background.
-  static DWORD WINAPI MonitorThreadProc(void* param);
-  DWORD MonitorProc();
-
-  // Called when a process matching the process is found.
-  void OnProcessAdded(DWORD process_id, const CString& process_pattern);
-
-  // Called when a previously added process exits.
-  void OnProcessRemoved(DWORD process_id);
-
-  // Walks the active process list to look for matches against the pattern.  If
-  // a process is found to match that's not in the list, it's added to the map
-  // and OnProcessAdded() is called.
-  bool UpdateProcessList(MapHandleToDword* map_handle_pid);
-
-  // Walks through the map and calls CloseHandle() on each handle in the list.
-  void CleanupHandleMap(MapHandleToDword* map_handle_pid);
-
-  bool is_running_;   // Set to true while the process monitoring is running.
-  ProcessMonitorCallbackInterface* callback_;   // Event callback interface.
-  std::vector<CString> process_name_patterns_;  // List of patterns to match.
-  CriticalSection lock_;              // Protects is_running_ flag.
-  scoped_handle event_thread_exit_;   // Signal to exit monitor_thread_.
-  scoped_handle monitor_thread_;      // Handle to the monitoring thread.
-
-  DISALLOW_EVIL_CONSTRUCTORS(ProcessMonitor);
-};
-
-}  // namespace omaha
-
-#endif  // OMAHA_TOOLS_SRC_GOOPDUMP_PROCESS_MONITOR_H__
-