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// -*- C++ -*-
//==========================================================================
/**
* @file Service_Types.h
*
* @author Douglas C. Schmidt <d.schmidt@vanderbilt.edu>
*/
//==========================================================================
#ifndef ACE_SERVICE_TYPE_H
#define ACE_SERVICE_TYPE_H
#include /**/ "ace/pre.h"
#include "ace/Service_Object.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/**
* @class ACE_Service_Type_Impl
*
* @brief The abstract base class of the hierarchy that defines the
* contents of the ACE_Service_Repository. The subclasses of
* this class allow the configuration of ACE_Service_Objects,
* ACE_Modules, and ACE_Streams.
*
* This class provides the root of the implementation hierarchy
* of the "Bridge" pattern. It maintains a pointer to the
* appropriate type of service implementation, i.e.,
* ACE_Service_Object, ACE_Module, or ACE_Stream.
*/
class ACE_Export ACE_Service_Type_Impl
{
public:
// = Initialization and termination methods.
ACE_Service_Type_Impl (void *object,
const ACE_TCHAR *s_name,
u_int flags = 0,
ACE_Service_Object_Exterminator gobbler = 0,
int stype = ACE_Service_Type::INVALID_TYPE);
virtual ~ACE_Service_Type_Impl (void);
// = Pure virtual interface (must be defined by the subclass).
virtual int suspend (void) const = 0;
virtual int resume (void) const = 0;
virtual int init (int argc, ACE_TCHAR *argv[]) const = 0;
virtual int fini (void) const;
virtual int info (ACE_TCHAR **str, size_t len) const = 0;
/// The pointer to the service.
void *object (void) const;
/// Get the name of the service.
const ACE_TCHAR *name (void) const;
/// Set the name of the service.
void name (const ACE_TCHAR *);
/// Dump the state of an object.
void dump (void) const;
/// get the service_type of this service
int service_type (void) const;
/// set the service_type of this service
void service_type (int stype);
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
protected:
/// Name of the service.
const ACE_TCHAR *name_;
/// Pointer to object that implements the service. This actually
/// points to an ACE_Service_Object, ACE_Module, or ACE_Stream.
void *obj_;
/// Destroy function to deallocate obj_.
ACE_Service_Object_Exterminator gobbler_;
/// Flags that control serivce behavior (particularly deletion).
u_int flags_;
/// type of this service
/// Used to properly manage the lifecycle of ACE_Modules and ACE_Streams
/// during shutdown
int service_type_;
};
/**
* @class ACE_Service_Object_Type
*
* @brief Define the methods for handling the configuration of
* ACE_Service_Objects.
*/
class ACE_Export ACE_Service_Object_Type : public ACE_Service_Type_Impl
{
public:
// = Initialization method.
ACE_Service_Object_Type (void *so,
const ACE_TCHAR *name,
u_int flags = 0,
ACE_Service_Object_Exterminator gobbler = 0,
int stype = ACE_Service_Type::SERVICE_OBJECT);
~ACE_Service_Object_Type (void);
// = Implement the hooks for <ACE_Service_Objects>.
virtual int suspend (void) const;
virtual int resume (void) const;
virtual int init (int argc, ACE_TCHAR *argv[]) const;
virtual int fini (void) const;
virtual int info (ACE_TCHAR **str, size_t len) const;
private:
/// Holds the initialization status (result of object->init())
mutable int initialized_;
};
/**
* @class ACE_Module_Type
*
* @brief Define the methods for handling the configuration of
* ACE_Modules.
*/
class ACE_Export ACE_Module_Type : public ACE_Service_Type_Impl
{
public:
// = Initialization method.
ACE_Module_Type (void *m, // Really an ACE_Module *.
const ACE_TCHAR *identifier,
u_int flags = 0,
int stype = ACE_Service_Type::MODULE);
~ACE_Module_Type (void);
// = Implement the hooks for <ACE_Modules>.
virtual int suspend (void) const;
virtual int resume (void) const;
virtual int init (int argc, ACE_TCHAR *argv[]) const;
virtual int fini (void) const;
virtual int info (ACE_TCHAR **str, size_t len) const;
/// Get the link pointer.
ACE_Module_Type *link (void) const;
/// Set the link pointer.
void link (ACE_Module_Type *);
/// Dump the state of an object.
void dump (void) const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
private:
/// Pointer to the next ACE_Module_Type in an ACE_Stream_Type.
ACE_Module_Type *link_;
};
/**
* @class ACE_Stream_Type
*
* @brief Define the methods for handling the configuration of
* ACE_Streams.
*/
class ACE_Export ACE_Stream_Type : public ACE_Service_Type_Impl
{
public:
// = Initialization method.
ACE_Stream_Type (void *s, // Really an ACE_Stream *.
const ACE_TCHAR *identifier,
u_int flags = 0,
int stype = ACE_Service_Type::STREAM);
~ACE_Stream_Type (void);
// = Implement the hooks for <ACE_Streams>.
virtual int suspend (void) const;
virtual int resume (void) const;
virtual int init (int argc, ACE_TCHAR *argv[]) const;
virtual int fini (void) const;
virtual int info (ACE_TCHAR **str, size_t len) const;
/// Add a new ACE_Module to the top of the ACE_Stream.
int push (ACE_Module_Type *new_module);
/// Search for @a module and remove it from the ACE_Stream.
int remove (ACE_Module_Type *module);
/// Locate the ACE_Module with @a mod_name.
ACE_Module_Type *find (const ACE_TCHAR *module_name) const;
/// Dump the state of an object.
void dump (void) const;
/// Declare the dynamic allocation hooks.
ACE_ALLOC_HOOK_DECLARE;
private:
/// Pointer to the head of the ACE_Module list.
ACE_Module_Type *head_;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
#include "ace/Service_Types.inl"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /* _SERVICE_TYPE_H */
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