/usr/include/sipxtapi/os/OsRWMutex.h is in libsipxtapi-dev 3.3.0~test17-2.1.
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// Copyright (C) 2004-2006 SIPfoundry Inc.
// Licensed by SIPfoundry under the LGPL license.
//
// Copyright (C) 2004-2006 Pingtel Corp. All rights reserved.
// Licensed to SIPfoundry under a Contributor Agreement.
//
// $$
///////////////////////////////////////////////////////////////////////////////
#ifndef _OsRWMutex_h_
#define _OsRWMutex_h_
// SYSTEM INCLUDES
// APPLICATION INCLUDES
#include "os/OsDefs.h"
#include "os/OsStatus.h"
#include "utl/UtlDefs.h"
// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// CONSTANTS
// STRUCTS
// TYPEDEFS
// FORWARD DECLARATIONS
//:Mutual exclusion semaphore handling multiple readers and writers
// Two kinds of concurrent tasks, called "readers" and "writers", share a
// single resource. The readers can use the resource simultaneously, but each
// writer must have exclusive access to it. When a writer is ready to use the
// resource, it should be enabled to do so as soon as possible.
/// Depending on the native OS that we are running on, we include the class
/// declaration for the appropriate lower level implementation and use a
/// "typedef" statement to associate the OS-independent class name (OsRWMutex)
/// with the OS-dependent realization of that type (e.g., OsRWMutexWnt).
#if defined(_WIN32)
# include "os/shared/OsRWMutexShared.h"
typedef class OsRWMutexShared OsRWMutex;
#elif defined(_VXWORKS) || defined(ANDROID)
# include "os/shared/OsRWMutexShared.h"
typedef class OsRWMutexShared OsRWMutex;
#elif defined(__pingtel_on_posix__)
# include "os/linux/OsRWMutexLinux.h"
typedef class OsRWMutexLinux OsRWMutex;
#else
# error Unsupported target platform.
#endif
#endif // _OsRWMutex_h_
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