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// $Id$
// ============================================================================
//
// = LIBRARY
// TAO/tests/POA/On_Demand_Loading
//
// = FILENAME
// Servant_Locator.cpp
//
// = DESCRIPTION
// Implementation of the helper class for the ServantActivator and
// the ServantLocator.
//
// = AUTHOR
// Kirthika Parameswaran <kirthika@cs.wustl.edu>
//
// ============================================================================
#include "Servant_Manager.h"
ACE_RCSID(On_Demand_Activation, Servant_Manager, "$Id$")
// Initialization.
ServantManager_i::ServantManager_i (CORBA::ORB_ptr orb)
: orb_ (CORBA::ORB::_duplicate (orb))
{
}
// Destruction.
ServantManager_i::~ServantManager_i (void)
{
}
// This method loads the dynamically linked dll which is the servant
// and returns the servant object which is then used for other
// operations in the dll.
PortableServer::Servant
ServantManager_i::obtain_servant (const char *str,
PortableServer::POA_ptr poa,
long value)
{
// The string format is <dllname:factory_function> that must be
// parsed.
this->parse_string (str);
// Create the dll object.
ACE_DLL *dll;
ACE_NEW_RETURN (dll,
ACE_DLL,
0);
// Obtain the ObjectId from the string argument.
PortableServer::ObjectId_var oid =
PortableServer::string_to_ObjectId (str);
// Make an HASH_MAP entry by binding the object_id and the dll
// object associated with it together.
if (this->servant_map_.bind (oid.in (),
dll) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"%p\n",
"Bind failed"),
0);
// Now that the dll name is available we open the dll.
if (dll->open (dllname_) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"%p", dll->error ()),
0);
// The next step is to obtain the symbol for the function that will
// create the servant object and return it.
SERVANT_FACTORY servant_creator = ACE_reinterpret_cast
(SERVANT_FACTORY, dll->symbol (create_symbol_.in ()));
// Checking whether it is possible to create the servant.
if (servant_creator == 0)
ACE_ERROR_RETURN ((LM_ERROR,
"%p", dll->error ()),
0);
// Now create and return the servant using the <servant_creator>
// factory function.
return (*servant_creator) (this->orb_.in (),
poa,
value);
}
// The objectID is in a format of dll:factory_function which has to be
// parsed and separated into tokens to be used.
void
ServantManager_i::parse_string (const char *s)
{
// The format of the object <dll:factory_function>. This string is
// parsed to obtain the dll name and the function name which will
// create trhe servant and return it to us.
char *str = ACE::strnew (s);
char *func = ACE_OS::strchr (str, ':');
if (func != 0)
*func = '\0';
// Assign the value until '\0' to dllname_.
this->dllname_ = CORBA::string_dup (str);
// Assign the value after ':' to create_symbol_.
this->create_symbol_ = CORBA::string_dup (func + 1);
ACE_DEBUG ((LM_DEBUG,
"the servant dll:%s\n the factory_function:%s\n ",
this->dllname_.in (),
this->create_symbol_.in ()));
delete [] str;
}
// This method returns an ObjectId when given an dll name and the
// factory function to be invoked in the dll.The format of the
// ObjectId is libname:factory_function.
PortableServer::ObjectId_var
ServantManager_i::create_dll_object_id (const char *libname,
const char *factory_function)
{
char *format_string;
ACE_DEBUG ((LM_DEBUG,
"format-string is getting allocated\n"));
ACE_NEW_RETURN (format_string,
char [ACE_OS::strlen (libname) +
ACE_OS::strlen (factory_function) +
sizeof (':') +
1], // For the trailing 0.
0);
char *end = ACE::strecpy (format_string, libname);
end = ACE::strecpy (end - 1, ":");
ACE::strecpy (end - 1, factory_function);
ACE_DEBUG ((LM_DEBUG,
"format-string is %s\n",
format_string));
// The object ID is created.
PortableServer::ObjectId_var oid =
PortableServer::string_to_ObjectId (format_string);
delete [] format_string;
return oid;
}
// This method destroys the servant and its caretaking dll object.
void
ServantManager_i::destroy_servant (PortableServer::Servant servant,
const PortableServer::ObjectId &oid)
{
// The servant is destroyed.
delete servant;
// Since the servant is no more the dll object associated with it
// has to be destroyed too.
ACE_DLL *dll = 0;
// Since the servant is no more the dll object associated with it
// has to be destroyed too.
if (this->servant_map_.unbind (oid,
dll) == -1)
ACE_ERROR ((LM_ERROR,
"%p\n",
"Unbind failed!\n"));
delete dll;
}
#if defined (ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION)
template class ACE_Hash_Map_Entry<PortableServer::ObjectId,ACE_DLL*>;
template class ACE_Hash<PortableServer::ObjectId>;
template class ACE_Equal_To<PortableServer::ObjectId>;
template class ACE_Hash_Map_Manager<PortableServer::ObjectId,ACE_DLL*, ACE_Null_Mutex>;
template class ACE_Hash_Map_Manager_Ex<PortableServer::ObjectId, ACE_DLL*, ACE_Hash<PortableServer::ObjectId>, ACE_Equal_To<PortableServer::ObjectId>, ACE_Null_Mutex>;
template class ACE_Hash_Map_Iterator_Base_Ex<PortableServer::ObjectId, ACE_DLL*, ACE_Hash<PortableServer::ObjectId>, ACE_Equal_To<PortableServer::ObjectId>, ACE_Null_Mutex>;
template class ACE_Hash_Map_Iterator<PortableServer::ObjectId,ACE_DLL*, ACE_Null_Mutex>;
template class ACE_Hash_Map_Iterator_Ex<PortableServer::ObjectId, ACE_DLL*, ACE_Hash<PortableServer::ObjectId>, ACE_Equal_To<PortableServer::ObjectId>, ACE_Null_Mutex>;
template class ACE_Hash_Map_Reverse_Iterator<PortableServer::ObjectId,ACE_DLL*, ACE_Null_Mutex>;
template class ACE_Hash_Map_Reverse_Iterator_Ex<PortableServer::ObjectId, ACE_DLL*, ACE_Hash<PortableServer::ObjectId>, ACE_Equal_To<PortableServer::ObjectId>, ACE_Null_Mutex>;
#elif defined(ACE_HAS_TEMPLATE_INSTANTIATION_PRAGMA)
#pragma instantiate ACE_Hash_Map_Entry<PortableServer::ObjectId,ACE_DLL*,ACE_Null_Mutex>
#pragma instantiate ACE_Hash<PortableServer::ObjectId,ACE_DLL*>
#pragma instantiate ACE_Equal_To<PortableServer::ObjectId,ACE_DLL*>
#pragma instantiate ACE_Hash_Map_Manager<PortableServer::ObjectId,ACE_DLL*,ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Manager_Ex<PortableServer::ObjectId, ACE_DLL*, ACE_Hash<PortableServer::ObjectId>, ACE_Equal_To<PortableServer::ObjectId>, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Iterator_Base_Ex<PortableServer::ObjectId, ACE_DLL*, ACE_Hash<PortableServer::ObjectId>, ACE_Equal_To<PortableServer::ObjectId>, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Iterator<PortableServer::ObjectId,ACE_DLL*,ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Iterator_Ex<PortableServer::ObjectId, ACE_DLL*, ACE_Hash<PortableServer::ObjectId>, ACE_Equal_To<PortableServer::ObjectId>, ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Reverse_Iterator<PortableServer::ObjectId,ACE_DLL*,ACE_Null_Mutex>
#pragma instantiate ACE_Hash_Map_Reverse_Iterator_Ex<PortableServer::ObjectId, ACE_DLL*, ACE_Hash<PortableServer::ObjectId>, ACE_Equal_To<PortableServer::ObjectId>, ACE_Null_Mutex>
#endif /* ACE_HAS_EXPLICIT_TEMPLATE_INSTANTIATION */
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