Move public headers into src/asdcp and install them in a asdcp subdirectory.

[asdcplib.git] / src / asdcp / KM_mutex.h

diff --git a/src/asdcp/KM_mutex.h b/src/asdcp/KM_mutex.h
new file mode 100755 (executable)
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+++ b/src/asdcp/KM_mutex.h
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+/*
+Copyright (c) 2004-2009, John Hurst
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+  /*! \file    KM_mutex.h
+    \version $Id$
+    \brief   platform portability
+  */
+
+#ifndef _KM_MUTEX_H_
+#define _KM_MUTEX_H_
+
+#include <asdcp/KM_platform.h>
+
+#ifndef KM_WIN32
+# include <pthread.h>
+#endif
+
+namespace Kumu
+{
+#ifdef KM_WIN32
+  class Mutex
+    {
+      CRITICAL_SECTION m_Mutex;
+      KM_NO_COPY_CONSTRUCT(Mutex);
+
+    public:
+      inline Mutex()       { ::InitializeCriticalSection(&m_Mutex); }
+      inline ~Mutex()      { ::DeleteCriticalSection(&m_Mutex); }
+      inline void Lock()   { ::EnterCriticalSection(&m_Mutex); }
+      inline void Unlock() { ::LeaveCriticalSection(&m_Mutex); }
+    };
+#else // KM_WIN32
+  class Mutex
+    {
+      pthread_mutex_t m_Mutex;
+      KM_NO_COPY_CONSTRUCT(Mutex);
+
+    public:
+      inline Mutex()       { pthread_mutex_init(&m_Mutex, 0); }
+      inline ~Mutex()      { pthread_mutex_destroy(&m_Mutex); }
+      inline void Lock()   { pthread_mutex_lock(&m_Mutex); }
+      inline void Unlock() { pthread_mutex_unlock(&m_Mutex); }
+    };
+#endif // KM_WIN32
+
+  // automatic Mutex management within a block -
+  // the mutex is created by the constructor and
+  // released by the destructor
+  class AutoMutex
+    {
+      Mutex& m_Mutex;
+      AutoMutex();
+      KM_NO_COPY_CONSTRUCT(AutoMutex);
+
+    public:
+      AutoMutex(Mutex& Mtx) : m_Mutex(Mtx) { m_Mutex.Lock(); }
+      ~AutoMutex() { m_Mutex.Unlock(); }
+    };
+
+} // namespace Kumu
+
+#endif // _KM_MUTEX_H_
+
+//
+// end KM_mutex.h
+//