OpenCV/opencv/3rdparty/openexr/IlmThread/IlmThreadMutexPosix.cpp

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2005-2012, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
// 
// All rights reserved.
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// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
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///////////////////////////////////////////////////////////////////////////

//-----------------------------------------------------------------------------
//
//	class Mutex -- implementation for
//	platforms that support Posix threads
//
//-----------------------------------------------------------------------------

#include "IlmBaseConfig.h"

#ifdef ILMBASE_FORCE_CXX03
#   if HAVE_PTHREAD

#      include "IlmThreadMutex.h"
#      include "Iex.h"
#      include <assert.h>

ILMTHREAD_INTERNAL_NAMESPACE_SOURCE_ENTER


Mutex::Mutex ()
{
    if (int error = ::pthread_mutex_init (&_mutex, 0))
        IEX_INTERNAL_NAMESPACE::throwErrnoExc ("Cannot initialize mutex (%T).", error);
}


Mutex::~Mutex ()
{
    int error = ::pthread_mutex_destroy (&_mutex);
    assert (error == 0);
}


void
Mutex::lock () const
{
    if (int error = ::pthread_mutex_lock (&_mutex))
        IEX_INTERNAL_NAMESPACE::throwErrnoExc ("Cannot lock mutex (%T).", error);
}


void
Mutex::unlock () const
{
    if (int error = ::pthread_mutex_unlock (&_mutex))
        IEX_INTERNAL_NAMESPACE::throwErrnoExc ("Cannot unlock mutex (%T).", error);
}


ILMTHREAD_INTERNAL_NAMESPACE_SOURCE_EXIT

#   endif
#endif