Getting service process on Mac to handle having things moved/changed underneath it.

chrome/common/service_process_util_posix.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_COMMON_SERVICE_PROCESS_UTIL_POSIX_H_
 #define CHROME_COMMON_SERVICE_PROCESS_UTIL_POSIX_H_
 
 #include "service_process_util.h"
 
 #include <signal.h>
 
 #include "base/basictypes.h"
 #include "base/message_loop.h"
 #include "base/message_pump_libevent.h"
 #include "base/scoped_ptr.h"
 
 #if defined(OS_LINUX)
 #include "chrome/common/multi_process_lock.h"
 MultiProcessLock* TakeServiceRunningLock(bool waiting);
 #endif  // OS_LINUX
 
 #if defined(OS_MACOSX)
+#include "base/file_path_component_watcher.h"
 #include "base/mac/scoped_cftyperef.h"
+
 class CommandLine;
 CFDictionaryRef CreateServiceProcessLaunchdPlist(CommandLine* cmd_line,
                                                  bool for_auto_launch);
 #endif  // OS_MACOSX
 
 // Watches for |kShutDownMessage| to be written to the file descriptor it is
 // watching. When it reads |kShutDownMessage|, it performs |shutdown_task_|.
 // Used here to monitor the socket listening to g_signal_socket.
 class ServiceProcessShutdownMonitor
     : public base::MessagePumpLibevent::Watcher {
@@ skipping 17 matching lines @@
 struct ServiceProcessState::StateData
     : public base::RefCountedThreadSafe<ServiceProcessState::StateData> {
   StateData();
 
   // WatchFileDescriptor needs to be set up by the thread that is going
   // to be monitoring it.
   void SignalReady();
 
 #if defined(OS_MACOSX)
   base::mac::ScopedCFTypeRef<CFDictionaryRef> launchd_conf_;
+  base::FilePathComponentWatcher executable_watcher_;
 #endif  // OS_MACOSX
 #if defined(OS_LINUX)
   scoped_ptr<MultiProcessLock> initializing_lock_;
   scoped_ptr<MultiProcessLock> running_lock_;
 #endif  // OS_LINUX
   scoped_ptr<ServiceProcessShutdownMonitor> shut_down_monitor_;
   base::MessagePumpLibevent::FileDescriptorWatcher watcher_;
   int sockets_[2];
   struct sigaction old_action_;
   bool set_action_;
 
  protected:
   friend class base::RefCountedThreadSafe<ServiceProcessState::StateData>;
   virtual ~StateData();
 };
 
 #endif  // CHROME_COMMON_SERVICE_PROCESS_UTIL_POSIX_H_