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// $Id$
#include "PSDL_Datastore.h"
#include "PSDL_OctetSeq.h"
#include "PSDL_String.h"
#include "ace/SString.h"
#include "ace/OS_NS_unistd.h"
#include "tao/debug.h"
#include "tao/OctetSeqC.h"
#include "ace/Auto_Ptr.h"
TAO_PSDL_Datastore::TAO_PSDL_Datastore ()
: allocator_ (0),
obj_ref_map_ (0),
index_file_ ("Data_Store"),
base_address_ (ACE_DEFAULT_BASE_ADDR)
{
this->open (this->index_file_,
this->base_address_);
}
TAO_PSDL_Datastore::~TAO_PSDL_Datastore (void)
{
// delete allocator_;
// ACE_OS::free (const_cast<ACE_TCHAR *> (this->index_file_));
}
int
TAO_PSDL_Datastore::unbind (const char *name)
{
ACE_GUARD_RETURN (TAO_SYNCH_MUTEX, ace_mon, this->lock_, -1);
TAO_PSDL_String psdl_string (this->allocator_);
psdl_string = name;
if (this->obj_ref_map_->unbind (psdl_string, this->allocator_) != 0)
return -1;
return 0;
}
int
TAO_PSDL_Datastore::bind (const char *name,
const CORBA::OctetSeq &octet_seq)
{
int result = -1;
TAO_PSDL_OctetSeq psdl_octet_seq (this->allocator_);
psdl_octet_seq = octet_seq;
TAO_PSDL_String psdl_string (this->allocator_);
psdl_string = name;
ACE_GUARD_RETURN (TAO_SYNCH_MUTEX, ace_mon, this->lock_, -1);
// Do a normal bind. This will fail if there's already an
// entry with the same name
result = this->obj_ref_map_->bind (psdl_string,
psdl_octet_seq,
this->allocator_);
// if (result == 1): Entry already exists.
// if (result == -1): Bind failed.
// if (result == 0) success.
return result;
}
int
TAO_PSDL_Datastore::find (const char *name,
CORBA::OctetSeq &octet_seq)
{
TAO_PSDL_OctetSeq psdl_seq;
TAO_PSDL_String psdl_string (this->allocator_);
psdl_string = CORBA::string_dup (name);
int result = this->obj_ref_map_->find (psdl_string,
psdl_seq,
this->allocator_);
if (result == 0)
{
octet_seq.replace (psdl_seq.length_,
psdl_seq.length_,
psdl_seq.buffer_);
}
else
{
ACE_DEBUG ((LM_ERROR,
"Couldnt find the entry in the Database. stopping",
-1));
}
return result;
}
ACE_Allocator*
TAO_PSDL_Datastore::allocator (void)
{
return allocator_;
}
int
TAO_PSDL_Datastore::open (const ACE_TCHAR *file_name,
void *base_address)
{
this->base_address_ = base_address;
this->index_file_ = ACE_OS::strdup (file_name);
if (this->index_file_ == 0)
return -1;
return create_index ();
}
int
TAO_PSDL_Datastore::create_index (void)
{
// Make sure that the file name is of the legal length.
if (ACE_OS::strlen (this->index_file_) >= MAXNAMELEN + MAXPATHLEN)
{
errno = ENAMETOOLONG;
return -1;
}
#if !defined (CHORUS)
ACE_MMAP_Memory_Pool::OPTIONS options (this->base_address_);
#else
// Use base address == 0, don't use a fixed address.
ACE_MMAP_Memory_Pool::OPTIONS options (0,
0,
0,
ACE_CHORUS_LOCAL_NAME_SPACE_T_SIZE);
#endif /* CHORUS */
// 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)
ACE_ERROR_RETURN ((LM_ERROR,
"create_index\n"),
-1);
#endif /* ACE_LACKS_ACCESS */
void *name_obj_map = 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_PERSISTENT_NAME_OBJ_MAP, name_obj_map) == 0)
{
this->obj_ref_map_ = static_cast<NAME_OBJ_REF_MAP *> (name_obj_map);
}
else
{
// Create a new <name_obj_map_> (because we've just created a new
// memory-mapped file).
size_t index_size = sizeof (NAME_OBJ_REF_MAP);
name_obj_map = this->allocator_->malloc (index_size);
if (name_obj_map == 0
|| create_index_helper (name_obj_map) == -1
|| this->allocator_->bind (TAO_PERSISTENT_NAME_OBJ_MAP,
name_obj_map) == -1)
{
// Attempt to clean up.
ACE_ERROR ((LM_ERROR,
"create_index\n"));
this->allocator_->remove ();
return -1;
}
}
return 0;
}
int
TAO_PSDL_Datastore::create_index_helper (void *buffer)
{
this->obj_ref_map_ = new(buffer) NAME_OBJ_REF_MAP(this->allocator_) ;
return 0;
}
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