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Diffstat (limited to 'TAO/examples/POA/Loader/Servant_Locator.h')
| -rw-r--r-- | TAO/examples/POA/Loader/Servant_Locator.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/TAO/examples/POA/Loader/Servant_Locator.h b/TAO/examples/POA/Loader/Servant_Locator.h deleted file mode 100644 index 5e099a7938b..00000000000 --- a/TAO/examples/POA/Loader/Servant_Locator.h +++ /dev/null @@ -1,112 +0,0 @@ -// This may look like C, but it's really -*- C++ -*- -// $Id$ - -//================================================================================ -// -// = LIBRARY -// TAO/examples/POA/Loader -// -// = FILENAME -// Servant_Locator.h -// -// = DESCRIPTION -// Defines a ServantLocator_i class , used with a POA having -// a NON_RETAIN policy. -// -// = AUTHOR -// Kirthika Parameswaran <kirthika@cs.wustl.edu> -// -//================================================================================== - -#include "ace/OS.h" - -#ifndef SERVANT_LOCATOR_H -#define SERVANT_LOCATOR_H - -#include "tao/corba.h" -#include "ace/DLL.h" - -class ServantLocator_i : public POA_PortableServer::ServantLocator -{ - // = TITLE - // This class is used by a POA with USE_SERVANT_MANAGER and - // NON_RETAIN policy. - // - // = DESCRIPTION - // This class defines the Servant Locator interface of the Servant - // Manager. It is invoked when the POA has an USE_SERVANT_MANAGER - // policy and a servant_retention policy of NON_RETAIN type. -public: - typedef PortableServer::Servant - (*SERVANT_FACTORY) (const PortableServer::ObjectId &oid, - PortableServer::POA_ptr poa, - CORBA::ORB_ptr orb); - // This typedef is used to typecast the void* obtained when finding - // a symbol in the dll. Invoking the function pointer obtained would - // get a servant. - - typedef void - (*SERVANT_GARBAGE_COLLECTOR) (const PortableServer::ObjectId &oid, - PortableServer::POA_ptr, - PortableServer::Servant servant); - // This typedef is used to obtain the garbage_collection_function symbol - // in the dll. Invoking the function pointer obtained would then destroy - // the servant. - - ServantLocator_i (CORBA::ORB_ptr orb, - const char *dllname, - const char *factory_function, - const char *garbage_collection_function); - // Constructor. - - virtual PortableServer::Servant preinvoke (const PortableServer::ObjectId &oid, - PortableServer::POA_ptr adapter, - const char *operation, - PortableServer::ServantLocator::Cookie &the_cookie, - CORBA::Environment &ACE_TRY_ENV); - // This method is invoked by a POA whenever it receives a request - // for MyFoo object that is not currently active. When the POA is - // created using the NON_RETAIN policy the Active Object Map is not - // maintained, in other words, an association between the ObjectId - // and the servant is not maintained. Hence every client request the - // servant has to be loaded. Note the operation argument. This - // argument specifies the operation to be invoked on the - // servant. The cookie helps in marking the servant. This marking is - // useful while destroying the servant. - - virtual void postinvoke (const PortableServer::ObjectId &oid, - PortableServer::POA_ptr adapter, - const char *operation, - PortableServer::ServantLocator::Cookie the_cookie, - PortableServer::Servant the_servant, - CORBA::Environment &ACE_TRY_ENV); - // This method is invoked whenever a MyFooServant completes a - // request. As the Servant Loactor interface is used when the POA - // doesnt maintain the Active Object Map, its necessary to get rid - // of the servant after the client request has been processed. The - // appropriate servant is destroyed by verifying the cookie.Again - // this method is invoked per client request. - -private: - ACE_CString dllname_; - // The name of the dll containing the servant. - - ACE_CString create_symbol_; - // The symbol which on getting invoked will give us the servant - // pointer. - - ACE_DLL dll_; - // The ACE_DLL object which performs the task of loading the dll - // and accessing it. - - SERVANT_FACTORY servant_supplier_; - // The function pointer of factory_function type. - - SERVANT_GARBAGE_COLLECTOR servant_garbage_collector_; - // The function pointer of garbage_collection_function type. - - CORBA::ORB_var orb_; - // A reference to the ORB. -}; - -#endif /* SERVANT_LOCATOR_H */ |