Add RecursiveMutex, UnlockGuard, TryLockGuard

beast/thread/RecursiveMutex.h

@@ -0,0 +1,84 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of Beast: https://github.com/vinniefalco/Beast
+    Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
+
+    Portions of this file are from JUCE.
+    Copyright (c) 2013 - Raw Material Software Ltd.
+    Please visit http://www.juce.com
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+#ifndef BEAST_THREAD_RECURSIVEMUTEX_H_INCLUDED
+#define BEAST_THREAD_RECURSIVEMUTEX_H_INCLUDED
+
+#include "../Config.h"
+#include "LockGuard.h"
+#include "UnlockGuard.h"
+#include "TryLockGuard.h"
+
+#if ! BEAST_WINDOWS
+#include <pthread.h>
+#endif
+
+namespace beast {
+
+class RecursiveMutex
+{
+public:
+    typedef LockGuard <RecursiveMutex>      ScopedLockType;
+    typedef UnlockGuard <RecursiveMutex>    ScopedUnlockType;
+    typedef TryLockGuard <RecursiveMutex>   ScopedTryLockType;
+
+    /** Create the mutex.
+        The mutux is initially unowned.
+    */
+    RecursiveMutex ();
+
+    /** Destroy the mutex.
+        If the lock is owned, the result is undefined.
+    */
+    ~RecursiveMutex ();
+
+    // Boost concept compatibility:
+    // http://www.boost.org/doc/libs/1_54_0/doc/html/thread/synchronization.html#thread.synchronization.mutex_concepts
+
+    /** BasicLockable */
+    /** @{ */
+    void lock () const;
+    void unlock () const;
+    /** @} */
+
+    /** Lockable */
+    bool try_lock () const;
+
+private:
+// To avoid including windows.h in the public Beast headers, we'll just
+// reserve storage here that's big enough to be used internally as a windows
+// CRITICAL_SECTION structure.
+#if BEAST_WINDOWS
+# if BEAST_64BIT
+    char section[44];
+# else
+    char section[24];
+# endif
+#else
+    mutable pthread_mutex_t mutex;
+#endif
+};
+
+}
+
+#endif