Actual source code: dadestroy.c

  1: /*$Id: dadestroy.c,v 1.44 2001/06/21 21:19:09 bsmith Exp $*/
  2: 
  3: /*
  4:   Code for manipulating distributed regular arrays in parallel.
  5: */

 7:  #include src/dm/da/daimpl.h

  9: /* Logging support */
 10: int DA_COOKIE;
 11: int DAEvents[DA_MAX_EVENTS];

 13: /*@C
 14:    DADestroy - Destroys a distributed array.

 16:    Collective on DA

 18:    Input Parameter:
 19: .  da - the distributed array to destroy 

 21:    Level: beginner

 23: .keywords: distributed array, destroy

 25: .seealso: DACreate1d(), DACreate2d(), DACreate3d()
 26: @*/
 27: int DADestroy(DA da)
 28: {
 29:   int ierr,i,cnt = 0;


 34:   for (i=0; i<DA_MAX_WORK_VECTORS; i++) {
 35:     if (da->localin[i])  {cnt++;}
 36:     if (da->globalin[i]) {cnt++;}
 37:   }

 39:   if (--da->refct - cnt > 0) return(0);
 40:   /*
 41:          Need this test because the da references the vectors that 
 42:      reference the da, so destroying the da calls destroy on the 
 43:      vectors that cause another destroy on the da
 44:   */
 45:   if (da->refct < 0) return(0);
 46:   da->refct = 0;

 48:   for (i=0; i<DA_MAX_WORK_VECTORS; i++) {
 49:     if (da->localout[i]) SETERRQ(1,"Destroying a DA that has a local vector obtained with DAGetLocalVector()");
 50:     if (da->localin[i]) {VecDestroy(da->localin[i]);}
 51:     if (da->globalout[i]) SETERRQ(1,"Destroying a DA that has a global vector obtained with DAGetGlobalVector()");
 52:     if (da->globalin[i]) {VecDestroy(da->globalin[i]);}
 53:   }

 55:   for (i=0; i<DA_MAX_AD_ARRAYS; i++) {
 56:     if (da->adstartghostedout[i]){
 57:       PetscFree(da->adstartghostedout[i]);
 58:     }
 59:     if (da->adstartghostedin[i]){
 60:       PetscFree(da->adstartghostedin[i]);
 61:     }
 62:     if (da->adstartout[i]){
 63:       PetscFree(da->adstartout[i]);
 64:     }
 65:     if (da->adstartin[i]){
 66:       PetscFree(da->adstartin[i]);
 67:     }
 68:   }
 69:   for (i=0; i<DA_MAX_AD_ARRAYS; i++) {
 70:     if (da->admfstartghostedout[i]){
 71:       PetscFree(da->admfstartghostedout[i]);
 72:     }
 73:     if (da->admfstartghostedin[i]){
 74:       PetscFree(da->admfstartghostedin[i]);
 75:     }
 76:     if (da->admfstartout[i]){
 77:       PetscFree(da->admfstartout[i]);
 78:     }
 79:     if (da->admfstartin[i]){
 80:       PetscFree(da->admfstartin[i]);
 81:     }
 82:   }
 83:   for (i=0; i<DA_MAX_WORK_ARRAYS; i++) {
 84:     if (da->startghostedout[i]){
 85:       PetscFree(da->startghostedout[i]);
 86:     }
 87:     if (da->startghostedin[i]){
 88:       PetscFree(da->startghostedin[i]);
 89:     }
 90:     if (da->startout[i]){
 91:       PetscFree(da->startout[i]);
 92:     }
 93:     if (da->startin[i]){
 94:       PetscFree(da->startin[i]);
 95:     }
 96:   }

 98:   /* if memory was published with AMS then destroy it */
 99:   PetscObjectDepublish(da);

101:   PetscLogObjectDestroy(da);
102:   if (da->ltog) {VecScatterDestroy(da->ltog);}
103:   if (da->gtol) {VecScatterDestroy(da->gtol);}
104:   if (da->ltol) {VecScatterDestroy(da->ltol);}
105:   VecDestroy(da->global);
106:   VecDestroy(da->local);
107:   if (da->natural){
108:     VecDestroy(da->natural);
109:   }
110:   if (da->gton) {
111:     VecScatterDestroy(da->gton);
112:   }

114:   if (da->ao) {
115:     AODestroy(da->ao);
116:   }
117:   ISLocalToGlobalMappingDestroy(da->ltogmap);
118:   ISLocalToGlobalMappingDestroy(da->ltogmapb);

120:   if (da->lx) {PetscFree(da->lx);}
121:   if (da->ly) {PetscFree(da->ly);}
122:   if (da->lz) {PetscFree(da->lz);}

124:   for (i=0; i<da->w; i++) {
125:     PetscStrfree(da->fieldname[i]);
126:   }
127:   PetscFree(da->fieldname);

129:   if (da->localcoloring) {
130:     ISColoringDestroy(da->localcoloring);
131:   }
132:   if (da->ghostedcoloring) {
133:     ISColoringDestroy(da->ghostedcoloring);
134:   }

136:   if (da->coordinates) {VecDestroy(da->coordinates);}
137:   PetscHeaderDestroy(da);
138:   return(0);
139: }

141: /*@C
142:    DAGetISLocalToGlobalMapping - Accesses the local-to-global mapping in a DA.

144:    Not Collective

146:    Input Parameter:
147: .  da - the distributed array that provides the mapping 

149:    Output Parameter:
150: .  ltog - the mapping

152:    Level: intermediate

154:    Notes:
155:    This mapping can them be used by VecSetLocalToGlobalMapping() or 
156:    MatSetLocalToGlobalMapping().

158:    Essentially the same data is returned in the form of an integer array
159:    with the routine DAGetGlobalIndices().

161: .keywords: distributed array, destroy

163: .seealso: DACreate1d(), DACreate2d(), DACreate3d(), VecSetLocalToGlobalMapping(),
164:           MatSetLocalToGlobalMapping(), DAGetGlobalIndices(), DAGetISLocalToGlobalMappingBlck()
165: @*/
166: int DAGetISLocalToGlobalMapping(DA da,ISLocalToGlobalMapping *map)
167: {
170:   *map = da->ltogmap;
171:   return(0);
172: }

174: /*@C
175:    DAGetISLocalToGlobalMappingBlck - Accesses the local-to-global mapping in a DA.

177:    Not Collective

179:    Input Parameter:
180: .  da - the distributed array that provides the mapping 

182:    Output Parameter:
183: .  ltog - the mapping

185:    Level: intermediate

187:    Notes:
188:    This mapping can them be used by VecSetLocalToGlobalMappingBlock() or 
189:    MatSetLocalToGlobalMappingBlock().

191:    Essentially the same data is returned in the form of an integer array
192:    with the routine DAGetGlobalIndices().

194: .keywords: distributed array, destroy

196: .seealso: DACreate1d(), DACreate2d(), DACreate3d(), VecSetLocalToGlobalMapping(),
197:           MatSetLocalToGlobalMapping(), DAGetGlobalIndices(), DAGetISLocalToGlobalMapping()
198: @*/
199: int DAGetISLocalToGlobalMappingBlck(DA da,ISLocalToGlobalMapping *map)
200: {
203:   *map = da->ltogmapb;
204:   return(0);
205: }