Move the ProcessWatcher methods out of content/common/process_watcher into base/process_util, alo...

base/process_util.h

 // Copyright (c) 2011 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.
 
 // This file/namespace contains utility functions for enumerating, ending and
 // computing statistics of processes.
 
 #ifndef BASE_PROCESS_UTIL_H_
 #define BASE_PROCESS_UTIL_H_
 #pragma once
@@ skipping 481 matching lines @@
 // executable name to exit, then kills off any of them that are still around.
 // If filter is non-null, then only processes selected by the filter are waited
 // on.  Killed processes are ended with the given exit code.  Returns false if
 // any processes needed to be killed, true if they all exited cleanly within
 // the wait_milliseconds delay.
 BASE_EXPORT bool CleanupProcesses(const FilePath::StringType& executable_name,
                                   int64 wait_milliseconds,
                                   int exit_code,
                                   const ProcessFilter* filter);
 
+// This method ensures that the specified process eventually terminates, and
+// then it closes the given process handle.
+//
+// It assumes that the process has already been signalled to exit, and it
+// begins by waiting a small amount of time for it to exit.  If the process
+// does not appear to have exited, then this function starts to become
+// aggressive about ensuring that the process terminates.
+//
+// On Linux this method does not block the calling thread.
+// On OS X this method may block for up to 2 seconds.
+//
+// NOTE: The process handle must have been opened with the PROCESS_TERMINATE
+// and SYNCHRONIZE permissions.
+//
+BASE_EXPORT void EnsureProcessTerminated(ProcessHandle process_handle);
+
+#if defined(OS_POSIX) && !defined(OS_MACOSX)
+// The nicer version of EnsureProcessTerminated() that is patient and will
+// wait for |process_handle| to finish and then reap it.
+BASE_EXPORT void EnsureProcessGetsReaped(ProcessHandle process_handle);
+#endif
+
 // This class provides a way to iterate through a list of processes on the
 // current machine with a specified filter.
 // To use, create an instance and then call NextProcessEntry() until it returns
 // false.
 class BASE_EXPORT ProcessIterator {
  public:
   typedef std::list<ProcessEntry> ProcessEntries;
 
   explicit ProcessIterator(const ProcessFilter* filter);
   virtual ~ProcessIterator();
@@ skipping 271 matching lines @@
 // instance running inside the parent.  The parent's Breakpad instance should
 // not handle the child's exceptions.  Calling RestoreDefaultExceptionHandler
 // in the child after forking will restore the standard exception handler.
 // See http://crbug.com/20371/ for more details.
 void RestoreDefaultExceptionHandler();
 #endif  // defined(OS_MACOSX)
 
 }  // namespace base
 
 #endif  // BASE_PROCESS_UTIL_H_