150 lines
4.7 KiB
C
150 lines
4.7 KiB
C
/*
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* Copyright (c) 2006, Swedish Institute of Computer Science
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)$Id: crtk.h,v 1.1 2007/05/23 23:23:23 oliverschmidt Exp $
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*/
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/*
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* RUNES CRTK header, version 0.3
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*
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* Stefanos Zachariadis, UCL, s.zachariadis@cs.ucl.ac.uk
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*/
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#ifndef CRTK_H
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#define CRTK_H
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/* For now this file is intimately dependent on sys/service.h. Really
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* mysterious error messages are generated if one forgets to include
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* sys/service.h, for this reason it is included here!
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*/
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#include "sys/service.h"
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#define COMPONENT 0
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#define INTERFACE 1
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#define RECEPTACLE 2
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typedef const char *Receptacle;
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typedef const void *Interface;
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#if 0
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typedef struct INTERFACES {
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Interface *i;
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struct INTERFACES *next;
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} Interfaces;
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#endif
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#if 0
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typedef struct RECEPTACLES {
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Receptacle *r;
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struct RECEPTACLES *next;
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} Receptacles;
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#endif
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typedef struct ATTRIBUTE {
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char *key;
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void *value;
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struct ATTRIBUTE *next;
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} Attribute;
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typedef struct ENTITY {
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int id;
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int type;
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char *name;
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Attribute *attributes;
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struct ENTITY *next;
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} Entity;
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#define INVOKE(receptacle, iface, function) \
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{ \
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struct service *service_s; \
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service_s = service_find(receptacle); \
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if(service_s != NULL) { \
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((struct iface *)service_s->interface)->function; \
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} \
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}
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#define DECLARE_COMPONENT(compname,interface) \
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extern struct process compname##_process; \
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struct compname interface;
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#define DECLARE_INTERFACE(intname,interface)\
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struct intname interface;
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#define IMPLEMENT_COMPONENT(compname, ...)\
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static const struct compname compname##_implementation_interface = __VA_ARGS__;\
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static struct service compname##_implementation = { NULL, NULL, #compname, & compname##_implementation_interface }; \
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static Entity compname##_entity;\
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static void construct(void);\
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static void destroy(void);\
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PROCESS(compname##_process, #compname"_process"); \
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PROCESS_THREAD(compname##_process, ev, data) {\
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static Attribute name = { "template", #compname, NULL };\
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PROCESS_EXITHANDLER(goto exit);\
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PROCESS_BEGIN();\
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compname##_entity.type = COMPONENT;\
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compname##_entity.name = #compname;\
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construct();\
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SERVICE_REGISTER(compname##_implementation);\
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INVOKE("crtk", crtk, instantiate(&compname##_entity,&name));\
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PROCESS_YIELD_UNTIL(ev == PROCESS_EVENT_SERVICE_REMOVED);\
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exit:\
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destroy();\
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SERVICE_REMOVE(compname##_implementation);\
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INVOKE("crtk", crtk, delent(&compname##_entity));\
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PROCESS_END(); \
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}
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/* Registry crtk is built upon. */
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DECLARE_COMPONENT(crtk,
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{
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/* prints the contents of the registry. */
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void (* printregistry)(void);
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/* delete the given entity. */
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void (* delent)(Entity *e);
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/* adds a new attribute for the given entity. */
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void (* putattr)(Entity *e, Attribute *a);
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/* searches for an attribute with the given key, for the given entity. */
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void (* getattr)(Entity e, char *key, Attribute **a);
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/* connects an interface and a receptacle. */
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void (* connect) (Interface i, Receptacle *r);
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/* instantiates a new component. */
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void (* instantiate) (Entity *e, Attribute *init);
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/* returns on e all the entities (and their attributes) available. */
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void (* getentities) (Entity **e);
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});
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#endif /* CRTK_H */
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