OpenCV_4.2.0/opencv-4.2.0/3rdparty/openexr/IlmThread/IlmThread.cpp

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3.5 KiB
C++

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2005-2012, Industrial Light & Magic, a division of Lucas
// Digital Ltd. LLC
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Industrial Light & Magic nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 COPYRIGHT
// OWNER OR CONTRIBUTORS 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.
//
///////////////////////////////////////////////////////////////////////////
//-----------------------------------------------------------------------------
//
// class Thread -- this file contains two implementations of thread:
// - dummy implementation for platforms that do not support threading
// when OPENEXR_FORCE_CXX03 is on
// - c++11 and newer version
//
//-----------------------------------------------------------------------------
#include "IlmBaseConfig.h"
#include "IlmThread.h"
#include "Iex.h"
ILMTHREAD_INTERNAL_NAMESPACE_SOURCE_ENTER
#ifndef ILMBASE_FORCE_CXX03
//-----------------------------------------------------------------------------
// C++11 and newer implementation
//-----------------------------------------------------------------------------
bool
supportsThreads ()
{
return true;
}
Thread::Thread ()
{
// empty
}
Thread::~Thread ()
{
// hopefully the thread has basically exited and we are just
// cleaning up, because run is a virtual function, so the v-table
// has already been partly destroyed...
if ( _thread.joinable () )
_thread.join ();
}
void
Thread::start ()
{
_thread = std::thread (&Thread::run, this);
}
#else
# if !defined (_WIN32) &&!(_WIN64) && !(HAVE_PTHREAD)
//-----------------------------------------------------------------------------
// OPENEXR_FORCE_CXX03 with no windows / pthread support
//-----------------------------------------------------------------------------
bool
supportsThreads ()
{
return false;
}
Thread::Thread ()
{
throw IEX_NAMESPACE::NoImplExc ("Threads not supported on this platform.");
}
Thread::~Thread ()
{
throw IEX_NAMESPACE::NoImplExc ("Threads not supported on this platform.");
}
void
Thread::start ()
{
throw IEX_NAMESPACE::NoImplExc ("Threads not supported on this platform.");
}
# endif
#endif
ILMTHREAD_INTERNAL_NAMESPACE_SOURCE_EXIT