From 99aa8c60282c7b8072eb35eb9ac815702f5bf586 Mon Sep 17 00:00:00 2001
From: "William R. Otte" <wotte@dre.vanderbilt.edu>
Date: Tue, 4 Mar 2008 14:51:23 +0000
Subject: undoing accidental deletion

---
 ACE/ace/Condition_Recursive_Thread_Mutex.h | 118 +++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 ACE/ace/Condition_Recursive_Thread_Mutex.h

(limited to 'ACE/ace/Condition_Recursive_Thread_Mutex.h')

diff --git a/ACE/ace/Condition_Recursive_Thread_Mutex.h b/ACE/ace/Condition_Recursive_Thread_Mutex.h
new file mode 100644
index 00000000000..cfcd46a9551
--- /dev/null
+++ b/ACE/ace/Condition_Recursive_Thread_Mutex.h
@@ -0,0 +1,118 @@
+// -*- C++ -*-
+
+//==========================================================================
+/**
+ *  @file    Condition_Recursive_Thread_Mutex.h
+ *
+ *  $Id$
+ *
+ *   Moved from Synch.h.
+ *
+ *  @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
+ */
+//==========================================================================
+
+#ifndef ACE_CONDITION_RECURSIVE_THREAD_MUTEX_H
+#define ACE_CONDITION_RECURSIVE_THREAD_MUTEX_H
+#include /**/ "ace/pre.h"
+
+#include /**/ "ace/ACE_export.h"
+
+#if !defined (ACE_LACKS_PRAGMA_ONCE)
+# pragma once
+#endif /* ACE_LACKS_PRAGMA_ONCE */
+
+#if !defined (ACE_HAS_THREADS)
+#  include "ace/Null_Condition.h"
+#else /* ACE_HAS_THREADS */
+#include "ace/Recursive_Thread_Mutex.h"
+
+ACE_BEGIN_VERSIONED_NAMESPACE_DECL
+
+template <class ACE_LOCK> class ACE_Condition;
+
+/**
+ * @class ACE_Condition<ACE_Recursive_Thread_Mutex>
+ *
+ * @brief ACE_Condition template specialization written using
+ *  @a ACE_Recursive_Thread_Mutex.  This allows threads to block until
+ *  shared data changes state using recursive mutexes.
+ */
+template<>
+class ACE_Export ACE_Condition<ACE_Recursive_Thread_Mutex>
+{
+public:
+  /// Initialize the condition variable with a recursive mutex.
+  ACE_Condition (ACE_Recursive_Thread_Mutex &m);
+
+  /// Implicitly destroy the condition variable.
+  ~ACE_Condition (void);
+
+  /**
+   * Explicitly destroy the condition variable.  Note that only one
+   * thread should call this method since it doesn't protect against
+   * race conditions.
+   */
+  int remove (void);
+
+  /**
+   * Block on condition, or until absolute time-of-day has passed.  If
+   * abstime == 0 use "blocking" <wait> semantics.  Else, if <abstime>
+   * != 0 and the call times out before the condition is signaled
+   * <wait> returns -1 and sets errno to ETIME.
+   */
+  int wait (const ACE_Time_Value *abstime = 0);
+
+  /**
+   * Block on condition or until absolute time-of-day has passed.  If
+   * abstime == 0 use "blocking" wait() semantics on the recursive @a mutex
+   * passed as a parameter (this is useful if you need to store the
+   * <Condition> in shared memory).  Else, if <abstime> != 0 and the
+   * call times out before the condition is signaled <wait> returns -1
+   * and sets errno to ETIME.
+   */
+  int wait (ACE_Recursive_Thread_Mutex &mutex,
+            const ACE_Time_Value *abstime = 0);
+
+  /// Signal one waiting thread.
+  int signal (void);
+
+  /// Signal *all* waiting threads.
+  int broadcast (void);
+
+  /// Returns a reference to the underlying mutex;
+  ACE_Recursive_Thread_Mutex &mutex (void);
+
+  /// Dump the state of an object.
+  void dump (void) const;
+
+private:
+
+  // = Prevent assignment and copying.
+  void operator= (const ACE_Condition<ACE_Recursive_Thread_Mutex> &);
+  ACE_Condition (const ACE_Condition<ACE_Recursive_Thread_Mutex> &);
+
+private:
+
+  /// A normal (i.e., non-recursive) condition variable.
+  ACE_cond_t cond_;
+
+  /// Reference to the recursive mutex.
+  ACE_Recursive_Thread_Mutex &mutex_;
+
+};
+
+class ACE_Export ACE_Condition_Recursive_Thread_Mutex
+  : public ACE_Condition<ACE_Recursive_Thread_Mutex>
+{
+public:
+  /// Initialize the condition variable with a recursive mutex.
+  ACE_Condition_Recursive_Thread_Mutex (ACE_Recursive_Thread_Mutex &m);
+};
+
+ACE_END_VERSIONED_NAMESPACE_DECL
+
+#endif /* !ACE_HAS_THREADS */
+
+#include /**/ "ace/post.h"
+#endif /* ACE_CONDITION_RECURSIVE_THREAD_MUTEX_H */
-- 
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