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// Copyright (C) 2004, 2006 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// Authors: Carl Laird, Andreas Waechter IBM 2004-08-13
#include "IpTaggedObject.hpp"
#include <limits>
/* keyword to declare a thread-local variable according to http://en.wikipedia.org/wiki/Thread-local_storage
* GCC < 4.5 on MacOS X does not support TLS
* With Intel compiler on MacOS X, problems with __thread were reported. (Hope that C++ thread_local will be OK)
*/
#ifndef IPOPT_THREAD_LOCAL
#if __cplusplus >= 201103L
#define IPOPT_THREAD_LOCAL thread_local
#elif defined(_MSC_VER)
#define IPOPT_THREAD_LOCAL __declspec(thread)
#elif defined(__APPLE__) && ((defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ < 405)) || defined(__INTEL_COMPILER))
#define IPOPT_THREAD_LOCAL
#else
#define IPOPT_THREAD_LOCAL __thread
#endif
#endif
namespace Ipopt
{
/** Global data that is incremented every time ANY TaggedObject changes.
*
* This allows us to obtain a unique Tag when the object changes.
*/
static IPOPT_THREAD_LOCAL TaggedObject::Tag unique_tag = 1;
/** Objects derived from TaggedObject MUST call this
* method every time their internal state changes to
* update the internal tag for comparison
*/
void TaggedObject::ObjectChanged()
{
DBG_START_METH("TaggedObject::ObjectChanged()", 0);
tag_ = unique_tag;
unique_tag++;
DBG_ASSERT(unique_tag < std::numeric_limits<Tag>::max());
// The Notify method from the Subject base class notifies all
// registered Observers that this subject has changed.
Notify(Observer::NT_Changed);
}
} // namespace Ipopt