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// Singleton.cpp
// $Id$
#if !defined (ACE_SINGLETON_C)
#define ACE_SINGLETON_C
#define ACE_BUILD_DLL
#include "ace/Singleton.h"
#include "ace/Synch_T.h"
#include "ace/Object_Manager.h"
#if !defined (__ACE_INLINE__)
#include "ace/Singleton.i"
#endif /* __ACE_INLINE__ */
template <class TYPE, class LOCK> void
ACE_Singleton<TYPE, LOCK>::dump (void)
{
ACE_TRACE ("ACE_Singleton<TYPE, LOCK>::dump");
#if !defined (ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES)
ACE_DEBUG ((LM_DEBUG, "instance_ = %x",
ACE_Singleton<TYPE, LOCK>::instance_i ()));
ACE_Singleton<TYPE, LOCK>::singleton_lock_i ().dump ();
ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
#endif /* ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES */
}
template <class TYPE, class LOCK> ACE_Singleton<TYPE, LOCK> *&
ACE_Singleton<TYPE, LOCK>::instance_i (void)
{
#if defined (ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES)
// Pointer to the Singleton instance. This works around a bug with
// G++ and it's (mis-)handling of templates and statics...
static ACE_Singleton<TYPE, LOCK> *singleton_ = 0;
return singleton_;
#else
return ACE_Singleton<TYPE, LOCK>::singleton_;
#endif /* ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES */
}
template <class TYPE, class LOCK> LOCK &
ACE_Singleton<TYPE, LOCK>::singleton_lock_i (void)
{
#if defined (ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES)
// Lock the creation of the singleton. This works around a
// "feature" of G++... ;-)
static LOCK ace_singleton_lock_;
return ace_singleton_lock_;
#else
return ACE_Singleton<TYPE, LOCK>::ace_singleton_lock_;
#endif /* ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES */
}
template <class TYPE, class LOCK> TYPE *
ACE_Singleton<TYPE, LOCK>::instance (void)
{
ACE_TRACE ("ACE_Singleton<TYPE, LOCK>::instance");
ACE_Singleton<TYPE, LOCK> *&singleton =
ACE_Singleton<TYPE, LOCK>::instance_i ();
// Perform the Double-Check pattern...
if (singleton == 0)
{
ACE_GUARD_RETURN (LOCK, ace_mon, (ACE_Singleton<TYPE, LOCK>::singleton_lock_i ()), 0);
if (singleton == 0)
{
ACE_NEW_RETURN (singleton, (ACE_Singleton<TYPE, LOCK>), 0);
// Register for destruction with ACE_Object_Manager.
ACE_Object_Manager::at_exit (singleton);
}
}
return &singleton->instance_;
}
template <class TYPE, class LOCK> void
ACE_Singleton<TYPE, LOCK>::cleanup (void *)
{
delete this;
}
#if !defined (ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES)
// Pointer to the Singleton instance.
template <class TYPE, class LOCK> ACE_Singleton<TYPE, LOCK> *
ACE_Singleton<TYPE, LOCK>::singleton_ = 0;
// Lock the creation of the singleton.
template <class TYPE, class LOCK> LOCK
ACE_Singleton<TYPE, LOCK>::ace_singleton_lock_;
#endif /* !defined (ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES) */
template <class TYPE, class LOCK> void
ACE_TSS_Singleton<TYPE, LOCK>::dump (void)
{
ACE_TRACE ("ACE_TSS_Singleton<TYPE, LOCK>::dump");
#if !defined (ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES)
ACE_DEBUG ((LM_DEBUG, "instance_ = %x", &singleton_->instance_));
ace_singleton_lock_.dump();
ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
#endif /* ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES */
}
template <class TYPE, class LOCK> TYPE *
ACE_TSS_Singleton<TYPE, LOCK>::instance (void)
{
ACE_TRACE ("ACE_TSS_Singleton<TYPE, LOCK>::instance");
#if defined (ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES)
// Pointer to the Singleton instance. This works around a bug with
// G++...
static ACE_TSS_Singleton<TYPE, LOCK> *singleton_ = 0;
// Lock the creation of the singleton. This works around a
// "feature" of G++... ;-)
static LOCK ace_singleton_lock_;
// Perform the Double-Check pattern...
if (singleton_ == 0)
{
ACE_GUARD_RETURN (LOCK, ace_mon, ace_singleton_lock_, 0);
if (singleton_ == 0)
{
ACE_NEW_RETURN (singleton_, (ACE_TSS_Singleton<TYPE, LOCK>), 0);
#if 0 /* ACE_Object_Manager::at_thread_exit () is not implemented yet. */
// Register for destruction with ACE_Object_Manager.
ACE_Object_Manager::at_thread_exit (instance_);
#endif /* 0 */
}
}
#else
// Perform the Double-Check pattern...
if (singleton_ == 0)
{
ACE_GUARD_RETURN (LOCK, ace_mon, (ACE_TSS_Singleton<TYPE, LOCK>::ace_singleton_lock_), 0);
if (singleton_ == 0)
{
ACE_NEW_RETURN (singleton_, (ACE_TSS_Singleton<TYPE, LOCK>), 0);
#if 0 /* ACE_Object_Manager::at_thread_exit () is not implemented yet. */
// Register for destruction with ACE_Object_Manager.
ACE_Object_Manager::at_thread_exit (instance_);
#endif /* 0 */
}
}
#endif /* ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES */
return ACE_TSS_GET (&singleton_->instance_, TYPE);
}
template <class TYPE, class LOCK> void
ACE_TSS_Singleton<TYPE, LOCK>::cleanup (void *)
{
ACE_TRACE ("ACE_TSS_Singleton::cleanup");
delete this;
}
#if !defined (ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES)
// Pointer to the Singleton instance.
template <class TYPE, class LOCK> ACE_TSS_Singleton <TYPE, LOCK> *
ACE_TSS_Singleton<TYPE, LOCK>::singleton_ = 0;
// Lock the creation of the singleton.
template <class TYPE, class LOCK> LOCK
ACE_TSS_Singleton<TYPE, LOCK>::ace_singleton_lock_;
#endif /* !defined (ACE_LACKS_STATIC_DATA_MEMBER_TEMPLATES) */
#endif /* ACE_SINGLETON_C */
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