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#include "tao/Connection_Cache_Manager.h"
#include "tao/Connection_Handler.h"
#if !defined (__ACE_INLINE__)
# include "tao/Connection_Cache_Manager.i"
#endif /* __ACE_INLINE__ */
ACE_RCSID(tao, Connection_Cache_Hash_Manager, "$Id$")
TAO_Connection_Cache_Manager::
TAO_Connection_Cache_Manager (void)
: cache_map_ ()
{
ACE_NEW (this->cache_lock_,
ACE_Lock_Adapter<ACE_SYNCH_MUTEX>);
}
TAO_Connection_Cache_Manager::~TAO_Connection_Cache_Manager (void)
{
delete this->cache_lock_;
// Close the HASH MAP and release resources
this->cache_map_.close ();
}
int
TAO_Connection_Cache_Manager::bind_i (TAO_Cache_ExtId &ext_id,
TAO_Cache_IntId &int_id)
{
// First call duplicate on the ext_id ie. make a copy of the
// contents
ext_id.duplicate ();
// Get the entry too
HASH_MAP_ENTRY *entry = 0;
int retval = this->cache_map_.bind (ext_id,
int_id,
entry);
if (retval == 0)
{
// The entry has been added to cache succesfully
// Add the cache_map_entry to the handler
int_id.handler () ->cache_map_entry (entry);
}
else if (retval == 1)
{
// There was an entry like this before, so let us do some
// minor adjustments
retval = get_last_index_bind (ext_id,
int_id,
entry);
int_id.handler ()->cache_map_entry (entry);
}
return retval;
}
int
TAO_Connection_Cache_Manager::find_i (const TAO_Cache_ExtId &key,
TAO_Cache_IntId &value)
{
HASH_MAP_ENTRY *entry = 0;
// Get the entry from the Hash Map
int retval = this->cache_map_.find (key,
entry);
if (retval == 0)
{
retval = this->get_idle_handler (key,
entry);
if (entry)
value = entry->int_id_;
}
return retval;
}
int
TAO_Connection_Cache_Manager::rebind_i (const TAO_Cache_ExtId &key,
const TAO_Cache_IntId &value)
{
return this->cache_map_.rebind (key,
value);
}
int
TAO_Connection_Cache_Manager::trybind_i (const TAO_Cache_ExtId &key,
TAO_Cache_IntId &value)
{
return this->cache_map_.trybind (key, value);
}
int
TAO_Connection_Cache_Manager::unbind_i (const TAO_Cache_ExtId &key)
{
return this->cache_map_.unbind (key);
}
int
TAO_Connection_Cache_Manager::unbind_i (const TAO_Cache_ExtId &key,
TAO_Cache_IntId &value)
{
return this->cache_map_.unbind (key,
value);
}
int
TAO_Connection_Cache_Manager::make_idle_i (HASH_MAP_ENTRY *&entry)
{
// First get the entry again (if at all things had changed in the
// cache map in the mean time)
HASH_MAP_ENTRY *new_entry = 0;
int retval = this->cache_map_.find (entry->ext_id_,
new_entry);
if (retval == 0)
{
new_entry->int_id_.handler ()->
recycle_state (ACE_RECYCLABLE_IDLE_AND_PURGABLE);
entry = new_entry;
}
return retval;
}
int
TAO_Connection_Cache_Manager::
get_last_index_bind (TAO_Cache_ExtId &key,
TAO_Cache_IntId &val,
HASH_MAP_ENTRY *&entry)
{
CORBA::ULong ctr = entry->ext_id_.index ();
// Start looking at the succesive elements
while (entry->next_->ext_id_.index () != 0)
{
ctr++;
// Change the entry
entry = entry->next_;
}
// Set the index
key.index (ctr + 1);
// Now do a bind again with the new index
return this->cache_map_.bind (key,
val,
entry);
}
int
TAO_Connection_Cache_Manager::
get_idle_handler (const TAO_Cache_ExtId &ext_id,
HASH_MAP_ENTRY *&entry)
{
// We are sure that we have an entry
do
{
// Found the entry, so check whether it is busy
if (entry->int_id_.handler ()->recycle_state () == ACE_RECYCLABLE_IDLE_AND_PURGABLE ||
entry->int_id_.handler ()->recycle_state () == ACE_RECYCLABLE_IDLE_AND_PURGABLE)
{
// Save that in the handler
entry->int_id_.handler ()->cache_map_entry (entry);
// Mark the connection as busy
entry->int_id_.handler ()->recycle_state (ACE_RECYCLABLE_BUSY);
return 0;
}
else
{
entry = entry->next_;
}
}
// This would prevent us from moving to the next ext_id..
while (entry->next_->ext_id_.index () != 0);
// @@ There is a subtle assumption that I have made, ie. the
// elements with higher indexes of ext_id will be placed
// continously. That could be *bad*
// We havent got a connection, so set the pointer to null.
entry = 0;
return -1;
}
#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)
// Instantiations for the Hash Map
template class ACE_Equal_To<TAO_Cache_ExtId>;
template class ACE_Hash<TAO_Cache_ExtId>;
template class ACE_Hash_Map_Entry<TAO_Cache_ExtId, TAO_Cache_IntId>;
template class ACE_Hash_Map_Manager<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Null_Mutex>;
template class ACE_Hash_Map_Iterator<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Null_Mutex>;
template class ACE_Hash_Map_Reverse_Iterator<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Null_Mutex>;
template class ACE_Hash_Map_Manager_Ex<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>;
template class ACE_Hash_Map_Iterator_Base_Ex<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>;
template class ACE_Hash_Map_Iterator_Ex<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>;
template class ACE_Hash_Map_Reverse_Iterator_Ex<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>;
#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)
// Instantiations for the Hash Map
#pragma instantiate ACE_Equal_To<TAO_Cache_ExtId>
#pragma instantiate ACE_Hash<TAO_Cache_ExtId>
#pragma instantiate ACE_Hash_Map_Entry<TAO_Cache_ExtId, TAO_Cache_IntId>
#pragma instantiate ACE_Hash_Map_Manager<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Iterator<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Reverse_Iterator<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Manager_Ex<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Iterator_Base_Ex<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Iterator_Ex<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Reverse_Iterator_Ex<TAO_Cache_ExtId, TAO_Cache_IntId, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>
#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */
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