orte/liborte/ORTESubscription.c

   1 /*
   2  *  $Id: ORTESubscription.c,v 0.0.0.1     2003/11/21
   3  *
   4  *  DEBUG:  section 33                  Functions working over subscription
   5  *  AUTHOR: Petr Smolik                 petr.smolik@wo.cz
   6  *
   7  *  ORTE - OCERA Real-Time Ethernet     http://www.ocera.org/
   8  *  --------------------------------------------------------------------
   9  *
  10  *  This program is free software; you can redistribute it and/or modify
  11  *  it under the terms of the GNU General Public License as published by
  12  *  the Free Software Foundation; either version 2 of the License, or
  13  *  (at your option) any later version.
  14  *
  15  *  This program is distributed in the hope that it will be useful,
  16  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *  GNU General Public License for more details.
  19  *
  20  */
  21
  22 #include "orte.h"
  23
  24 GAVL_CUST_NODE_INT_IMP(SubscriptionList,
  25                        PSEntry, ObjectEntryOID, GUID_RTPS,
  26                        subscriptions, psNode, guid, gavl_cmp_guid);
  27
  28 /*****************************************************************************/
  29 ORTESubscription *
  30 ORTESubscriptionCreate(ORTEDomain *d,SubscriptionMode mode,SubscriptionType sType,
  31     char *topic,char *typeName,void *instance,NtpTime *deadline,
  32     NtpTime *minimumSeparation,ORTERecvCallBack recvCallBack,
  33     void *recvCallBackParam) {
  34   GUID_RTPS             guid;
  35   CSTReader             *cstReader;
  36   CSTReaderParams       cstReaderParams;
  37   ORTESubsProp          *sp;
  38   ObjectEntryOID        *objectEntryOID;
  39   CSChange              *csChange;
  40   TypeNode              *typeNode;
  41
  42   cstReader=(CSTReader*)MALLOC(sizeof(CSTReader));
  43   if (!cstReader) return NULL;
  44   pthread_rwlock_wrlock(&d->objectEntry.objRootLock);
  45   pthread_rwlock_wrlock(&d->objectEntry.htimRootLock);
  46   pthread_rwlock_rdlock(&d->typeEntry.lock);
  47   if (!(typeNode=ORTEType_find(&d->typeEntry,&typeName))) {
  48     pthread_rwlock_unlock(&d->typeEntry.lock);
  49     pthread_rwlock_unlock(&d->objectEntry.objRootLock);
  50     pthread_rwlock_unlock(&d->objectEntry.htimRootLock);
  51     printf("before call ORTESubscriptionCreateBestEffort is necessary to register \n\
  52             ser./deser. function for a given typeName!!!\n");
  53     return NULL;
  54   }
  55   pthread_rwlock_wrlock(&d->subscriptions.lock);
  56   //generate new guid of publisher
  57   d->subscriptions.counter++;
  58   guid.hid=d->guid.hid;guid.aid=d->guid.aid;
  59   guid.oid=(d->subscriptions.counter<<8)|OID_SUBSCRIPTION;
  60   sp=(ORTESubsProp*)MALLOC(sizeof(ORTESubsProp));
  61   memcpy(sp,&d->subsPropDefault,sizeof(ORTESubsProp));
  62   strcpy(sp->topic,topic);
  63   strcpy(sp->typeName,typeName);
  64   sp->deadline=*deadline;
  65   sp->minimumSeparation=*minimumSeparation;
  66   switch (sType) {
  67     case BEST_EFFORTS:
  68       sp->reliabilityRequested=PID_VALUE_RELIABILITY_BEST_EFFORTS;
  69       break;
  70     case STRICT_RELIABLE:
  71       sp->reliabilityRequested=PID_VALUE_RELIABILITY_STRICT;
  72       break;
  73   }
  74   sp->mode=mode;
  75   //insert object to structure objectEntry
  76   objectEntryOID=objectEntryAdd(d,&guid,(void*)sp);
  77   objectEntryOID->private=ORTE_TRUE;
  78   objectEntryOID->instance=instance;
  79   objectEntryOID->recvCallBack=recvCallBack;
  80   objectEntryOID->callBackParam=recvCallBackParam;
  81   //create writerSubscription
  82   cstReaderParams.delayResponceTimeMin=zNtpTime;
  83   cstReaderParams.delayResponceTimeMax=zNtpTime;
  84   cstReaderParams.ACKMaxRetries=d->domainProp.baseProp.ACKMaxRetries;
  85   cstReaderParams.repeatActiveQueryTime=iNtpTime;
  86   cstReaderParams.fullAcknowledge=ORTE_FALSE;
  87   CSTReaderInit(d,cstReader,objectEntryOID,guid.oid,&cstReaderParams,
  88                 &typeNode->typeRegister);
  89   //insert cstWriter to list of subscriberes
  90   CSTReader_insert(&d->subscriptions,cstReader);
  91   //generate csChange for writerSubscriberes
  92   pthread_rwlock_wrlock(&d->writerSubscriptions.lock);
  93   csChange=(CSChange*)MALLOC(sizeof(CSChange));
  94   parameterUpdateCSChangeFromSubscription(csChange,sp);
  95   csChange->guid=guid;
  96   csChange->alive=ORTE_TRUE;
  97   csChange->cdrStream.buffer=NULL;
  98   CSTWriterAddCSChange(d,&d->writerSubscriptions,csChange);
  99   pthread_rwlock_unlock(&d->writerSubscriptions.lock);
 100   pthread_rwlock_unlock(&d->subscriptions.lock);
 101   pthread_rwlock_unlock(&d->typeEntry.lock);
 102   pthread_rwlock_unlock(&d->objectEntry.objRootLock);
 103   pthread_rwlock_unlock(&d->objectEntry.htimRootLock);
 104   return cstReader;
 105 }
 106
 107 /*****************************************************************************/
 108 int
 109 ORTESubscriptionDestroy(ORTESubscription *cstReader) {
 110   CSChange              *csChange;
 111
 112   if (!cstReader) return -1;
 113   //generate csChange for writerSubscriptions
 114   pthread_rwlock_rdlock(&cstReader->domain->objectEntry.objRootLock);
 115   pthread_rwlock_wrlock(&cstReader->domain->objectEntry.htimRootLock);
 116   pthread_rwlock_wrlock(&cstReader->domain->writerSubscriptions.lock);
 117   csChange=(CSChange*)MALLOC(sizeof(CSChange));
 118   CSChangeAttributes_init_head(csChange);
 119   csChange->guid=cstReader->guid;
 120   csChange->alive=ORTE_FALSE;
 121   csChange->cdrStream.buffer=NULL;
 122   CSTWriterAddCSChange(cstReader->domain,
 123                        &cstReader->domain->writerSubscriptions,
 124                        csChange);
 125   pthread_rwlock_unlock(&cstReader->domain->writerSubscriptions.lock);
 126   pthread_rwlock_unlock(&cstReader->domain->objectEntry.htimRootLock);
 127   pthread_rwlock_unlock(&cstReader->domain->objectEntry.objRootLock);
 128   return 0;
 129 }
 130
 131
 132 /*****************************************************************************/
 133 int
 134 ORTESubscriptionPropertiesGet(ORTESubscription *cstReader,ORTESubsProp *sp) {
 135   pthread_rwlock_rdlock(&cstReader->domain->objectEntry.objRootLock);
 136   pthread_rwlock_rdlock(&cstReader->lock);
 137   *sp=*(ORTESubsProp*)cstReader->objectEntryOID->attributes;
 138   pthread_rwlock_unlock(&cstReader->lock);
 139   pthread_rwlock_unlock(&cstReader->domain->objectEntry.objRootLock);
 140   return 0;
 141 }
 142
 143 /*****************************************************************************/
 144 int
 145 ORTESubscriptionPropertiesSet(ORTESubscription *cstReader,ORTESubsProp *sp) {
 146   CSChange              *csChange;
 147
 148   pthread_rwlock_rdlock(&cstReader->domain->objectEntry.objRootLock);
 149   pthread_rwlock_wrlock(&cstReader->domain->objectEntry.htimRootLock);
 150   pthread_rwlock_wrlock(&cstReader->domain->writerSubscriptions.lock);
 151   pthread_rwlock_rdlock(&cstReader->lock);
 152   csChange=(CSChange*)MALLOC(sizeof(CSChange));
 153   parameterUpdateCSChangeFromSubscription(csChange,sp);
 154   csChange->guid=cstReader->guid;
 155   csChange->alive=ORTE_TRUE;
 156   csChange->cdrStream.buffer=NULL;
 157   CSTWriterAddCSChange(cstReader->domain,
 158       &cstReader->domain->writerSubscriptions,csChange);
 159   pthread_rwlock_unlock(&cstReader->lock);
 160   pthread_rwlock_unlock(&cstReader->domain->subscriptions.lock);
 161   pthread_rwlock_unlock(&cstReader->domain->objectEntry.htimRootLock);
 162   pthread_rwlock_unlock(&cstReader->domain->objectEntry.objRootLock);
 163   return 0;
 164 }
 165
 166 /*****************************************************************************/
 167 int
 168 ORTESubscriptionWaitForPublications(ORTESubscription *cstReader,NtpTime wait,
 169     u_int32_t retries,u_int32_t noPublications) {
 170   return 0;
 171 }
 172
 173 /*****************************************************************************/
 174 int
 175 ORTESubscriptionGetStatus(ORTESubscription *cstReader,ORTESubsStatus *status) {
 176   return 0;
 177 }
 178
 179 /*****************************************************************************/
 180 int
 181 ORTESubscriptionPull(ORTESubscription *cstReader) {
 182   ORTESubsProp         *sp;
 183   ORTERecvInfo         info;
 184   NtpTime              timeNext;
 185
 186   if (!cstReader) return -1;
 187   pthread_rwlock_rdlock(&cstReader->domain->objectEntry.objRootLock);
 188   pthread_rwlock_wrlock(&cstReader->domain->objectEntry.htimRootLock);
 189   pthread_rwlock_rdlock(&cstReader->domain->writerSubscriptions.lock);
 190   pthread_rwlock_wrlock(&cstReader->lock);
 191   sp=(ORTESubsProp*)cstReader->objectEntryOID->attributes;
 192   if (sp->mode==PULLED) {
 193     if (NtpTimeCmp(
 194           getActualNtpTime(),
 195           htimerUnicastCommon_get_expire(&cstReader->deadlineTimer))>=0) {
 196       memset(&info,0,sizeof(info));
 197       info.status=DEADLINE;
 198       info.topic=sp->topic;
 199       info.type=sp->typeName;
 200       cstReader->objectEntryOID->recvCallBack(&info,
 201           cstReader->objectEntryOID->instance,
 202           cstReader->objectEntryOID->callBackParam);
 203       NtpTimeAdd(timeNext,
 204                 (getActualNtpTime()),
 205                 sp->deadline);
 206       htimerUnicastCommon_set_expire(&cstReader->deadlineTimer,timeNext);
 207     }
 208     CSTReaderProcCSChangesIssue(cstReader->cstRemoteWriterSubscribed,ORTE_TRUE);
 209   }
 210   pthread_rwlock_unlock(&cstReader->lock);
 211   pthread_rwlock_unlock(&cstReader->domain->writerSubscriptions.lock);
 212   pthread_rwlock_unlock(&cstReader->domain->objectEntry.htimRootLock);
 213   pthread_rwlock_unlock(&cstReader->domain->objectEntry.objRootLock);
 214   return 0;
 215 }