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cs440-acg/ext/openexr/IlmBase/IlmThread/IlmThreadPosix.cpp

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+///////////////////////////////////////////////////////////////////////////
+//
+// 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 -- 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 *);
+}
+
+ILMTHREAD_INTERNAL_NAMESPACE_SOURCE_ENTER
+
+
+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_NAMESPACE::throwErrnoExc ("Cannot create new thread (%T).", error);
+}
+
+
+ILMTHREAD_INTERNAL_NAMESPACE_SOURCE_EXIT
+
+#endif