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#include "tao/PI/PICurrent_Impl.h"
#if TAO_HAS_INTERCEPTORS == 1
#include "tao/ORB_Core.h"
#if !defined (__ACE_INLINE__)
# include "tao/PI/PICurrent_Impl.inl"
#endif /* __ACE_INLINE__ */
#include "tao/TAO_Server_Request.h"
#include "ace/Log_Msg.h"
#include "tao/debug.h"
#include "ace/CORBA_macros.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
CORBA::Any *
TAO::PICurrent_Impl::get_slot (PortableInterceptor::SlotId identifier)
{
// No need to check validity of SlotId. It is validated before this
// method is invoked.
// The active slot table should never be a lazy copy of itself!
if ( (0 != this->lazy_copy_)
&& (&this->lazy_copy_->current_slot_table () == &this->slot_table_))
{
if (TAO_debug_level > 0)
TAOLIB_DEBUG ((LM_DEBUG, ACE_TEXT ("TAO (%P|%t) Lazy copy of self detected at %N,%l\n")));
throw ::CORBA::INTERNAL ();
}
// Get the slot table that is currently active
PICurrent_Impl::Table & table = this->current_slot_table ();
CORBA::Any * any = 0;
if (identifier < table.size ())
{
ACE_NEW_THROW_EX (any,
CORBA::Any (table[identifier]), // Make a copy.
CORBA::NO_MEMORY (
CORBA::SystemException::_tao_minor_code (
0,
ENOMEM),
CORBA::COMPLETED_NO));
}
else
{
// In accordance with the Portable Interceptor specification,
// return an Any with a TCKind of tk_null. A default
// constructed Any has that TCKind.
ACE_NEW_THROW_EX (any,
CORBA::Any,
CORBA::NO_MEMORY (
CORBA::SystemException::_tao_minor_code (
0,
ENOMEM),
CORBA::COMPLETED_NO));
}
return any;
}
void
TAO::PICurrent_Impl::set_slot (PortableInterceptor::SlotId identifier,
const CORBA::Any & data)
{
// No need to check validity of SlotId. It is validated before this
// method is invoked.
// Break any existing ties that another PICurrent has with our table
// since our table is changing.
if (0 != this->impending_change_callback_)
this->impending_change_callback_->convert_from_lazy_to_real_copy ();
// Ensure that we have a real physical copy of the table before
// making any changes to it.
this->convert_from_lazy_to_real_copy ();
// If the slot table array isn't large enough, then increase its
// size. We're guaranteed not to exceed the number of allocated
// slots for the reason stated above.
if (identifier >= this->slot_table_.size ()
&& this->slot_table_.size (identifier + 1) != 0)
throw ::CORBA::INTERNAL ();
this->slot_table_[identifier] = CORBA::Any (data);
}
void
TAO::PICurrent_Impl::take_lazy_copy (
TAO::PICurrent_Impl * p)
{
// Check that we are being told to actually change which table we are
// copying from. (If it is the same as before OR it would ultimately be
// the same table, we are already correctly setup and we do nothing.)
if ( (p != this->lazy_copy_)
&& ((0 == p) || (&p->current_slot_table () != &this->current_slot_table ()))
)
{
// Break any existing ties that another PICurrent has with our table
// since our table is changing.
if (0 != this->impending_change_callback_)
this->impending_change_callback_->convert_from_lazy_to_real_copy ();
// If we have previously logically copied another table, ensure it is
// told that we are no longer interested in it so that it will not
// call our conver_from_lazy_to_real_copy() when it changes/destructs.
if (0 != this->lazy_copy_)
this->lazy_copy_->set_callback_for_impending_change (0);
// Are we being asked to copy ourself (or nothing)
if ((0 == p) || (this == p))
{
this->lazy_copy_ = 0; // Use our own physical slot_table_
}
else
{
this->lazy_copy_ = p;
// Must tell the newly copied PICurrent_Impl that we want to
// be told when/if it is going to be changed or destroyed.
this->lazy_copy_->set_callback_for_impending_change (this);
}
}
}
TAO::PICurrent_Impl::~PICurrent_Impl ()
{
if (this->push_)
{
// We have YOUNGER stack members to REMOVE as well. HOWEVER we
// don't want the entry above us coming back down and trying
// to delete us again. (As we are currently doing just that.)
this->push_->pop_= 0;
delete this->push_;
}
else if (this->orb_core_)
{
// Since there are no entries above us, we must be the top of
// the stack and since all are being deleted, the stack will
// be empty.
this->orb_core_->set_tss_resource (this->tss_slot_, 0);
}
// Break any existing ties that another PICurrent has with our table
// since our table will no longer exists once this destructor completes.
if (0 != this->impending_change_callback_)
this->impending_change_callback_->convert_from_lazy_to_real_copy ();
// If we have logically copied another table, ensure it is told about our
// demise so that it will not call our non-existant
// convert_from_lazy_to_real_copy() when it changes/destructs.
if (0 != this->lazy_copy_)
this->lazy_copy_->set_callback_for_impending_change (0);
if (this->pop_)
{
// We have OLDER stack members to REMOVE as well. HOWEVER we
// don't want multiple adjustments of the stack head pointer from
// every older entry as they delete, as this requires multiple
// set_tss_resource updates which would be slow and unnecessary.
this->pop_->orb_core_= 0;
// We also don't want double deletions of what used to be above these
// since we have just completed the deletion of these ourselves.
this->pop_->push_= 0;
delete this->pop_;
}
}
void
TAO::PICurrent_Impl::push ()
{
if (this->orb_core_) // We have a stack to adjust
{
TAO::PICurrent_Impl *const currentHead =
static_cast<TAO::PICurrent_Impl *> (
this->orb_core_->get_tss_resource (this->tss_slot_));
if (!currentHead->push_)
{
// Since there is nothing younger above us, we need to create
// a new entry.
ACE_NEW_THROW_EX (currentHead->push_,
PICurrent_Impl (this->orb_core_, this->tss_slot_, currentHead),
CORBA::NO_MEMORY (
CORBA::SystemException::_tao_minor_code (
0,
ENOMEM),
CORBA::COMPLETED_NO));
}
this->orb_core_->set_tss_resource (this->tss_slot_, currentHead->push_);
}
else
throw ::CORBA::INTERNAL (); // Should only call push if we have a stack
}
void
TAO::PICurrent_Impl::pop ()
{
if (this->orb_core_) // We have a stack to adjust
{
TAO::PICurrent_Impl *const currentHead =
static_cast<TAO::PICurrent_Impl *> (
this->orb_core_->get_tss_resource (this->tss_slot_));
if (currentHead->pop_)
orb_core_->set_tss_resource (tss_slot_, currentHead->pop_);
else
throw ::CORBA::INTERNAL (); // Too many pop's
}
else
throw ::CORBA::INTERNAL (); // Should only call push if we have a stack
}
TAO_END_VERSIONED_NAMESPACE_DECL
#endif /* TAO_HAS_INTERCEPTORS == 1 */
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