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// $Id$
#include "ace/Map_Manager.h"
#include "ace/Based_Pointer_Repository.h"
#include "ace/Guard_T.h"
#include "ace/Null_Mutex.h"
#include "ace/Synch_Traits.h"
#include "ace/RW_Thread_Mutex.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_Based_Pointer_Repository_Rep
*
* @brief Implementation for the ACE_Based_Pointer_Repository.
*
* Every memory pool in ACE binds it's mapping base address and
* the mapped size to this repository every time it maps/remaps a
* new chunk of memory successfully.
*/
class ACE_Based_Pointer_Repository_Rep
{
public:
// Useful typedefs.
typedef ACE_Map_Manager <void *, size_t, ACE_Null_Mutex> MAP_MANAGER;
typedef ACE_Map_Iterator < void *, size_t, ACE_Null_Mutex> MAP_ITERATOR;
typedef ACE_Map_Entry <void *, size_t> MAP_ENTRY;
/// Keeps track of the mapping between addresses and their associated
/// values.
MAP_MANAGER addr_map_;
/// Synchronize concurrent access to the map.
ACE_SYNCH_MUTEX lock_;
};
ACE_Based_Pointer_Repository::ACE_Based_Pointer_Repository (void)
{
ACE_TRACE ("ACE_Based_Pointer_Repository::ACE_Based_Pointer_Repository");
ACE_NEW (this->rep_,
ACE_Based_Pointer_Repository_Rep);
}
ACE_Based_Pointer_Repository::~ACE_Based_Pointer_Repository (void)
{
ACE_TRACE ("ACE_Based_Pointer_Repository::~ACE_Based_Pointer_Repository");
delete this->rep_;
}
// Search for appropriate base address in repository
int
ACE_Based_Pointer_Repository::find (void *addr,
void *&base_addr)
{
ACE_TRACE ("ACE_Based_Pointer_Repository::find");
ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, mon, this->rep_->lock_, -1);
ACE_Based_Pointer_Repository_Rep::MAP_ENTRY *ce = 0;
for (ACE_Based_Pointer_Repository_Rep::MAP_ITERATOR iter (this->rep_->addr_map_);
iter.next (ce) != 0;
iter.advance ())
// Check to see if <addr> is within any of the regions.
if (addr >= ce->ext_id_
&& addr < ((char *) ce->ext_id_ + ce->int_id_))
{
// Assign the base address.
base_addr = ce->ext_id_;
return 1;
}
// Assume base address 0 (e.g., if new'ed).
base_addr = 0;
return 0;
}
// Bind a new entry to the repository or update the size of an
// existing entry.
int
ACE_Based_Pointer_Repository::bind (void *addr,
size_t size)
{
ACE_TRACE ("ACE_Based_Pointer_Repository::bind");
ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, mon, this->rep_->lock_, -1);
return this->rep_->addr_map_.rebind (addr, size);
}
// Unbind a base from the repository.
int
ACE_Based_Pointer_Repository::unbind (void *addr)
{
ACE_TRACE ("ACE_Based_Pointer_Repository::unbind");
ACE_GUARD_RETURN (ACE_SYNCH_MUTEX, mon, this->rep_->lock_, -1);
ACE_Based_Pointer_Repository_Rep::MAP_ENTRY *ce = 0;
// Search for service handlers that requested notification.
for (ACE_Based_Pointer_Repository_Rep::MAP_ITERATOR iter (this->rep_->addr_map_);
iter.next (ce) != 0;
iter.advance ())
{
// Check to see if <addr> is within any of the regions and if
// so, unbind the key from the map.
if (addr >= ce->ext_id_
&& addr < ((char *) ce->ext_id_ + ce->int_id_))
// Unbind base address.
return this->rep_->addr_map_.unbind (ce->ext_id_);
}
return 0;
}
#if defined (ACE_HAS_EXPLICIT_STATIC_TEMPLATE_MEMBER_INSTANTIATION)
template ACE_Singleton<ACE_Based_Pointer_Repository, ACE_SYNCH_RW_MUTEX> *
ACE_Singleton<ACE_Based_Pointer_Repository, ACE_SYNCH_RW_MUTEX>::singleton_;
#endif /* ACE_HAS_EXPLICIT_STATIC_TEMPLATE_MEMBER_INSTANTIATION */
ACE_END_VERSIONED_NAMESPACE_DECL
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