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#include "orbsvcs/Log_Macros.h"
#include "orbsvcs/Naming/Persistent_Context_Index.h"
#include "orbsvcs/Naming/Persistent_Naming_Context.h"
#include "orbsvcs/Naming/Persistent_Naming_Context_Factory.h"
#include "tao/debug.h"
#include "ace/Auto_Ptr.h"
#include "ace/OS_NS_unistd.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
int
TAO_Persistent_Context_Index::unbind (const char *poa_id)
{
ACE_GUARD_RETURN (TAO_SYNCH_MUTEX, ace_mon, this->lock_, -1);
TAO_Persistent_Index_ExtId name (poa_id);
TAO_Persistent_Index_IntId entry;
if (this->index_->unbind (name, entry, this->allocator_) != 0)
return -1;
else
{
// Free up the memory we allocated in bind().
this->allocator_->free ((void *) (entry.counter_));
return 0;
}
}
int
TAO_Persistent_Context_Index::bind (const char *poa_id,
ACE_UINT32 *&counter,
TAO_Persistent_Context_Index::CONTEXT *hash_map)
{
ACE_GUARD_RETURN (TAO_SYNCH_MUTEX, ace_mon, this->lock_, -1);
// Allocate memory for items to be stored in the table.
size_t poa_id_len = ACE_OS::strlen (poa_id) + 1;
size_t counter_len = sizeof (ACE_UINT32);
char *ptr = (char *) this->allocator_->malloc (poa_id_len + counter_len);
if (ptr == 0)
return -1;
else
{
// Populate memory with data.
counter = reinterpret_cast<ACE_UINT32 *> (ptr);
*counter = 0;
char * poa_id_ptr = ptr + counter_len;
ACE_OS::strcpy (poa_id_ptr, poa_id);
TAO_Persistent_Index_ExtId name (poa_id_ptr);
TAO_Persistent_Index_IntId entry (counter, hash_map);
int result = -1;
// Do a normal bind. This will fail if there's already an
// entry with the same name.
result = this->index_->bind (name, entry, this->allocator_);
if (result == 1)
{
// Entry already existed so bind failed. Free our dynamically
// allocated memory.
this->allocator_->free ((void *) ptr);
return result;
}
if (result == -1)
// Free our dynamically allocated memory.
this->allocator_->free ((void *) ptr);
else
// If bind() succeed, it will automatically sync
// up the map manager entry. However, we must sync up our
// name/value memory.
this->allocator_->sync (ptr, poa_id_len + counter_len);
return result;
}
}
TAO_Persistent_Context_Index::TAO_Persistent_Context_Index
(CORBA::ORB_ptr orb,
PortableServer::POA_ptr poa,
TAO_Persistent_Naming_Context_Factory * context_impl_factory)
: allocator_ (0),
index_ (0),
index_file_ (0),
base_address_ (0),
orb_ (CORBA::ORB::_duplicate (orb)),
poa_ (PortableServer::POA::_duplicate (poa)),
context_impl_factory_ (context_impl_factory)
{
}
TAO_Persistent_Context_Index::~TAO_Persistent_Context_Index (void)
{
delete allocator_;
delete context_impl_factory_;
ACE_OS::free (reinterpret_cast<void *> (const_cast<ACE_TCHAR *> (index_file_)));
}
ACE_Allocator*
TAO_Persistent_Context_Index::allocator (void)
{
return allocator_;
}
CosNaming::NamingContext_ptr
TAO_Persistent_Context_Index::root_context (void)
{
return CosNaming::NamingContext::_duplicate (root_context_.in ());
}
CORBA::ORB_ptr
TAO_Persistent_Context_Index::orb (void)
{
return orb_.in ();
}
int
TAO_Persistent_Context_Index::open (const ACE_TCHAR *file_name,
void *base_address)
{
this->base_address_ = base_address;
index_file_ = ACE_OS::strdup (file_name);
if (index_file_ == 0)
return -1;
return create_index ();
}
int
TAO_Persistent_Context_Index::init (size_t context_size)
{
// Note: in case of an early exit from this (or helper) function due
// to an error condition, we rely on POA to clean up all of the servants
// already registered with it.
// Return value of this function (necessary to keep compilers quiet).
int status = 0;
if (index_->current_size () == 0)
// CASE 1:there are no Naming Contexts registered. We need to create
// one.
{
this->root_context_ =
TAO_Persistent_Naming_Context::make_new_context (poa_.in (),
TAO_ROOT_NAMING_CONTEXT,
context_size,
this);
}
else
// CASE 2:Recreate all Naming Contexts.
status = recreate_all ();
return status;
}
int
TAO_Persistent_Context_Index::recreate_all (void)
{
CONTEXT_INDEX::ITERATOR *index_iter = 0;
ACE_NEW_RETURN (index_iter,
(CONTEXT_INDEX::ITERATOR) (*index_),
-1);
ACE_Auto_Basic_Ptr<CONTEXT_INDEX::ITERATOR> it (index_iter);
// Because of broken old g++!!!
typedef ACE_Hash_Map_With_Allocator<TAO_Persistent_Index_ExtId,
TAO_Persistent_Index_IntId> IND_DEF;
IND_DEF::ENTRY *entry = 0;
if (TAO_debug_level > 0)
ORBSVCS_DEBUG ((LM_DEBUG, "Starting to recreate Naming Contexts from the file...\n"));
// For each entry in <index_>, create a Naming Context servant.
do
{
index_iter->next (entry);
// Put together a servant for the new Naming Context
// Using the naming context factory to create a naming context of the appropriate type
TAO_Persistent_Naming_Context *context_impl =
this->context_impl_factory_->create_naming_context_impl (poa_.in (),
entry->ext_id_.poa_id_,
this,
entry->int_id_.hash_map_,
entry->int_id_.counter_);
// Put <context_impl> into the auto pointer temporarily, in case next
// allocation fails.
ACE_Auto_Basic_Ptr<TAO_Persistent_Naming_Context> temp (context_impl);
TAO_Naming_Context *context = 0;
ACE_NEW_RETURN (context,
TAO_Naming_Context (context_impl),
-1);
// Let <implementation> know about it's <interface>.
context_impl->interface (context);
// Release auto pointer and start using reference counting to
// control our servant.
temp.release ();
PortableServer::ServantBase_var s = context;
// Register with the POA.
PortableServer::ObjectId_var id =
PortableServer::string_to_ObjectId (entry->ext_id_.poa_id_);
this->poa_->activate_object_with_id (id.in (),
context);
CosNaming::NamingContext_var result = context->_this ();
// If this is the root Naming Context, take a note of it.
if (context_impl->root ())
this->root_context_= result._retn ();
} while (index_iter->advance ());
return 0;
}
TAO_Persistent_Naming_Context*
TAO_Persistent_Context_Index::create_naming_context_impl (
PortableServer::POA_ptr poa,
const char *poa_id)
{
return this->context_impl_factory_->create_naming_context_impl(poa,
poa_id,
this);
}
int
TAO_Persistent_Context_Index::create_index (void)
{
// Make sure that the file name is of the legal length.
if (ACE_OS::strlen (index_file_) >= MAXNAMELEN + MAXPATHLEN)
{
errno = ENAMETOOLONG;
return -1;
}
ACE_MMAP_Memory_Pool::OPTIONS options (base_address_);
// Create the allocator with the appropriate options. The name used
// for the lock is the same as one used for the file.
ACE_NEW_RETURN (this->allocator_,
ALLOCATOR (this->index_file_,
this->index_file_,
&options),
-1);
#if !defined (ACE_LACKS_ACCESS)
// Now check if the backing store has been created successfully.
if (ACE_OS::access (this->index_file_, F_OK) != 0)
ORBSVCS_ERROR_RETURN ((LM_ERROR,
"create_index\n"),
-1);
#endif /* ACE_LACKS_ACCESS */
void *context_index = 0;
// This is the easy case since if we find hash table in the
// memory-mapped file we know it's already initialized.
if (this->allocator_->find (TAO_NAMING_CONTEXT_INDEX, context_index) == 0)
this->index_ = (CONTEXT_INDEX *) context_index;
// Create a new <index_> (because we've just created a new
// memory-mapped file).
else
{
size_t index_size = sizeof (CONTEXT_INDEX);
context_index = this->allocator_->malloc (index_size);
if (context_index == 0
|| create_index_helper (context_index) == -1
|| this->allocator_->bind (TAO_NAMING_CONTEXT_INDEX,
context_index) == -1)
{
// Attempt to clean up.
ORBSVCS_ERROR ((LM_ERROR,
"create_index\n"));
this->allocator_->remove ();
return -1;
}
}
return 0;
}
int
TAO_Persistent_Context_Index::create_index_helper (void *buffer)
{
this->index_ = new (buffer) CONTEXT_INDEX (this->allocator_);
return 0;
}
TAO_END_VERSIONED_NAMESPACE_DECL
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