opencv/3rdparty/openexr/IlmThread/IlmThreadPosix.cpp

///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2005, 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.
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// 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
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///////////////////////////////////////////////////////////////////////////

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

#include "IlmBaseConfig.h"

#if HAVE_PTHREAD

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

extern "C"
{
    typedef void * (* Start) (void *);
}

namespace IlmThread {


bool
supportsThreads ()
{
    return true;
}

namespace {

void
threadLoop (void * t)
{
    return (reinterpret_cast<Thread*>(t))->run();
}

} // namespace


Thread::Thread ()
{
    // empty
}


Thread::~Thread ()
{
    int error = ::pthread_join (_thread, 0);
    assert (error == 0);
}


void
Thread::start ()
{
    if (int error = ::pthread_create (&_thread, 0, Start (threadLoop), this))
    Iex::throwErrnoExc ("Cannot create new thread (%T).", error);
}


} // namespace IlmThread

#endif