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// $Id$
#include "tao/Connection_Purging_Strategy.h"
#include "tao/Resource_Factory.h"
#include "tao/Transport.h"
#if !defined (__ACE_INLINE__)
# include "tao/Connection_Purging_Strategy.inl"
#endif /* __ACE_INLINE__ */
ACE_RCSID(tao, Connection_Purging_Strategy, "$Id$")
TAO_Connection_Purging_Strategy::TAO_Connection_Purging_Strategy (
TAO_Resource_Factory* rf)
: cache_maximum_ (rf->cache_maximum ()),
percent_(rf->purge_percentage ()),
lock_(rf->create_cached_connection_lock ()),
cache_manager_ ()
{
if (TAO_debug_level > 0)
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("TAO (%P|%t) - ")
ACE_TEXT ("TAO_Connection_Purging_Strategy::")
ACE_TEXT ("TAO_Connection_Purging_Strategy\n")));
}
}
TAO_Connection_Purging_Strategy::~TAO_Connection_Purging_Strategy (void)
{
if (TAO_debug_level > 0)
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("TAO (%P|%t) - ")
ACE_TEXT ("TAO_Connection_Purging_Strategy::")
ACE_TEXT ("~TAO_Connection_Purging_Strategy\n")));
}
delete lock_;
}
void
TAO_Connection_Purging_Strategy::close_entries(DESCRIPTOR_SET& sorted_set)
{
const int sorted_size = sorted_set.size ();
const int amount = (sorted_size * this->percent ()) / 100;
if (TAO_debug_level > 0)
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("TAO (%P|%t) - ")
ACE_TEXT ("Purging %d of %d cache entries\n"),
amount,
sorted_size));
}
for(int i = 0; i < sorted_size; i++)
{
TAO_DESCRIPTOR_INTERFACE* prop = sorted_set[i];
if (i < amount)
{
TAO_PURGING_CACHE_ITEM* item = 0;
if (this->cache_manager ().find_transport (prop, item) == 0)
{
if (TAO_debug_level > 0)
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("TAO (%P|%t) - ")
ACE_TEXT ("Idle item found in ")
ACE_TEXT ("cache: 0x%x\n"),
item));
}
// Eventually calls purge_from_cache() on the cache
// which will call remove_item_i() on us.
item->close_connection ();
}
}
delete prop;
}
}
// ======================================================================
TAO_ULong_Connection_Purging_Strategy::TAO_ULong_Connection_Purging_Strategy (
TAO_Resource_Factory* rf)
: TAO_Connection_Purging_Strategy (rf)
{
}
TAO_ULong_Connection_Purging_Strategy::~TAO_ULong_Connection_Purging_Strategy ()
{
}
int
TAO_ULong_Connection_Purging_Strategy::fill_set_i (DESCRIPTOR_SET& sorted_set)
{
int current_size = this->tracking_map_.current_size ();
int amount = current_size - this->cache_maximum ();
if (TAO_debug_level > 0)
{
ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("TAO (%P|%t) - ")
ACE_TEXT ("TAO_ULong_Connection_Purging_Strategy")
ACE_TEXT ("::fill_set_i - %d %d\n"),
current_size,
this->cache_maximum ()));
}
if (amount >= 0)
{
// I could not use ACE_Array_Base<HASH_MAP_ENTRY*> because
// the compiler kept complaining about HASH_MAP_ENTRY not having
// a default construtor.
HASH_MAP_ENTRY** entries;
ACE_NEW_RETURN(entries, HASH_MAP_ENTRY*[current_size], 0);
sorted_set.size (current_size);
int i;
HASH_MAP_ITER iter = this->tracking_map_.begin ();
for (i = 0; i < current_size; i++)
{
entries[i] = &(*iter);
iter++;
}
this->sort_set (entries, current_size);
for(i = 0; i < current_size; i++)
{
// The owner of the sorted_set array accepts responsibility
// for deleting the memory allocated here.
sorted_set[i] = entries[i]->ext_id_.property ()->duplicate ();
}
delete [] entries;
}
return (amount >= 0);
}
void
TAO_ULong_Connection_Purging_Strategy::remove_item_i (
TAO_DESCRIPTOR_INTERFACE* prop)
{
TAO_Cache_ExtId ext_id (prop);
this->tracking_map_.unbind (ext_id);
}
void
TAO_ULong_Connection_Purging_Strategy::remove_all_i ()
{
this->tracking_map_.unbind_all ();
}
#if !defined (ACE_LACKS_QSORT)
int
TAO_ULong_Connection_Purging_Strategy::cpscmp(const void* a, const void* b)
{
const HASH_MAP_ENTRY** left = (const HASH_MAP_ENTRY**)a;
const HASH_MAP_ENTRY** right = (const HASH_MAP_ENTRY**)b;
if ((*left)->int_id_ > (*right)->int_id_)
return 1;
if ((*left)->int_id_ < (*right)->int_id_)
return -1;
return 0;
}
#endif /* ACE_LACKS_QSORT */
void
TAO_ULong_Connection_Purging_Strategy::sort_set (HASH_MAP_ENTRY**& entries,
int current_size)
{
#if defined (ACE_LACKS_QSORT)
// Use insertion sort if we don't have qsort
for(int i = 1; i < current_size; i++)
{
if (entries[i]->int_id_ <
entries[i - 1]->int_id_)
{
HASH_MAP_ENTRY* entry = entries[i];
for(int j = i; j > 0 &&
entries[j - 1]->int_id_ >
entry->int_id_; j--)
{
HASH_MAP_ENTRY* holder = entries[j];
entries[j] = entries[j - 1];
entries[j - 1] = holder;
}
}
}
#else
ACE_OS::qsort (entries, current_size,
sizeof (HASH_MAP_ENTRY*), (ACE_COMPARE_FUNC)cpscmp);
#endif /* ACE_LACKS_QSORT */
}
#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)
template class ACE_Array_Base<TAO_Transport_Descriptor_Interface*>;
template class ACE_Hash_Map_Entry<TAO_Cache_ExtId, unsigned long>;
template class ACE_Hash_Map_Manager<TAO_Cache_ExtId, unsigned long, ACE_Null_Mutex>;
template class ACE_Hash_Map_Iterator<TAO_Cache_ExtId, unsigned long, ACE_Null_Mutex>;
template class ACE_Hash_Map_Manager_Ex<TAO_Cache_ExtId, unsigned long, 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, unsigned long, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>;
template class ACE_Hash_Map_Iterator_Ex<TAO_Cache_ExtId, unsigned long, 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, unsigned long, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>;
#elif defined (ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)
#pragma instantiate ACE_Array_Base<TAO_Transport_Descriptor_Interface*>
#pragma instantiate ACE_Hash_Map_Entry<TAO_Cache_ExtId, unsigned long>
#pragma instantiate ACE_Hash_Map_Manager<TAO_Cache_ExtId, unsigned long, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Iterator<TAO_Cache_ExtId, unsigned long, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Manager_Ex<TAO_Cache_ExtId, unsigned long, 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, unsigned long, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Iterator_Ex<TAO_Cache_ExtId, unsigned long, 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, unsigned long, ACE_Hash<TAO_Cache_ExtId>, ACE_Equal_To<TAO_Cache_ExtId>, ACE_Null_Mutex>
#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */
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