1 files changed, 80 insertions, 0 deletions
diff --git a/ACE/ace/Countdown_Time.h b/ACE/ace/Countdown_Time.h
new file mode 100644
index 00000000000..207b9045fcc
--- /dev/null
+++ b/ACE/ace/Countdown_Time.h
@@ -0,0 +1,80 @@
+// -*- C++ -*-
+
+//=============================================================================
+/**
+ *  @file    Countdown_Time.h
+ *
+ *  $Id$
+ *
+ *  @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
+ */
+//=============================================================================
+
+#ifndef ACE_COUNTDOWN_TIME_H
+#define ACE_COUNTDOWN_TIME_H
+
+#include /**/ "ace/pre.h"
+
+#include /**/ "ace/ACE_export.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#include "ace/Time_Value.h"
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+/**
+ * @class ACE_Countdown_Time
+ *
+ * @brief Keeps track of the amount of elapsed time.
+ *
+ * This class has a side-effect on the @c max_wait_time -- every
+ * time the stop() method is called the @c max_wait_time is
+ * updated.
+ */
+class ACE_Export ACE_Countdown_Time
+{
+public:
+  /// Cache the @a max_wait_time and call @c start().
+  ACE_Countdown_Time (ACE_Time_Value *max_wait_time);
+
+  /// Destructor, makes sure the max_wait_time that got passed as pointer
+  /// to the constructor is updated with the time elapsed.
+  ~ACE_Countdown_Time (void);
+
+  /// Cache the current time and enter a start state.
+  void start (void);
+
+  /// Subtract the elapsed time from max_wait_time_ and enter a stopped
+  /// state.
+  void stop (void);
+
+  /// Calls stop and then start.  max_wait_time_ is modified by the
+  /// call to stop.
+  void update (void);
+
+  /// Returns true if we've already been stopped, else false.
+  bool stopped (void) const;
+
+private:
+  /// Maximum time we were willing to wait.
+  ACE_Time_Value *max_wait_time_;
+
+  /// Beginning of the start time.
+  ACE_Time_Value start_time_;
+
+  /// Keeps track of whether we've already been stopped.
+  bool stopped_;
+
+  // Prevent copying
+  ACE_Countdown_Time (const ACE_Countdown_Time &);
+  ACE_Countdown_Time &operator= (const ACE_Countdown_Time &);
+};
+
+ACE_END_VERSIONED_NAMESPACE_DECL
+
+#include /**/ "ace/post.h"
+
+#endif /* ACE_COUNTDOWN_TIME_H */