1:  #include <petsc/private/viewerimpl.h>
  2: #include <adios2_c.h>
  3:  #include <petsc/private/vieweradios2impl.h>

  5: static PetscErrorCode PetscViewerSetFromOptions_ADIOS2(PetscOptionItems *PetscOptionsObject,PetscViewer v)
  6: {

 10:   PetscOptionsHead(PetscOptionsObject,"ADIOS2 PetscViewer Options");
 11:   PetscOptionsTail();
 12:   return(0);
 13: }

 15: static PetscErrorCode PetscViewerFileClose_ADIOS2(PetscViewer viewer)
 16: {
 17:   PetscViewer_ADIOS2 *adios2 = (PetscViewer_ADIOS2*)viewer->data;
 18:   PetscErrorCode     ierr;

 21:   switch (adios2->btype) {
 22:   case FILE_MODE_READ:
 23:     /* adios2_read_close(adios2->adios2_fp); */
 24:     break;
 25:   case FILE_MODE_APPEND:
 26:     break;
 27:   case FILE_MODE_WRITE:
 28:     /* adios2_close(adios2->adios2_handle); */
 29:     break;
 30:   default:
 31:     break;
 32:   }
 33:   PetscFree(adios2->filename);
 34:   return(0);
 35: }

 37: PetscErrorCode PetscViewerDestroy_ADIOS2(PetscViewer viewer)
 38: {
 39:   PetscViewer_ADIOS2 *adios2 = (PetscViewer_ADIOS2*) viewer->data;
 40:   PetscErrorCode     ierr;

 43:   PetscViewerFileClose_ADIOS2(viewer);
 44:   PetscFree(adios2);
 45:   PetscObjectComposeFunction((PetscObject)viewer,"PetscViewerFileSetName_C",NULL);
 46:   PetscObjectComposeFunction((PetscObject)viewer,"PetscViewerFileGetName_C",NULL);
 47:   PetscObjectComposeFunction((PetscObject)viewer,"PetscViewerFileSetMode_C",NULL);
 48:   return(0);
 49: }

 51: PetscErrorCode  PetscViewerFileSetMode_ADIOS2(PetscViewer viewer, PetscFileMode type)
 52: {
 53:   PetscViewer_ADIOS2 *adios2 = (PetscViewer_ADIOS2*) viewer->data;

 57:   adios2->btype = type;
 58:   return(0);
 59: }

 61: PetscErrorCode  PetscViewerFileSetName_ADIOS2(PetscViewer viewer, const char name[])
 62: {
 63:   PetscViewer_ADIOS2 *adios2 = (PetscViewer_ADIOS2*) viewer->data;
 64:   PetscErrorCode     ierr;

 67:   PetscFree(adios2->filename);
 68:   PetscStrallocpy(name, &adios2->filename);
 69:   /* Create or open the file collectively */
 70:   switch (adios2->btype) {
 71:   case FILE_MODE_READ:
 72:     /* adios2->adios2_fp = adios2_read_open_file(adios2->filename,ADIOS2_READ_METHOD_BP,PetscObjectComm((PetscObject)viewer)); */
 73:     break;
 74:   case FILE_MODE_APPEND:
 75:     break;
 76:   case FILE_MODE_WRITE:
 77:     /* adios2_open(&adios2->adios2_handle,"PETSc",adios2->filename,"w",PetscObjectComm((PetscObject)viewer)); */
 78:     break;
 79:   default:
 80:     SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ORDER, "Must call PetscViewerFileSetMode() before PetscViewerFileSetName()");
 81:   }
 82:   return(0);
 83: }

 85: static PetscErrorCode PetscViewerFileGetName_ADIOS2(PetscViewer viewer,const char **name)
 86: {
 87:   PetscViewer_ADIOS2 *vadios2 = (PetscViewer_ADIOS2*)viewer->data;

 90:   *name = vadios2->filename;
 91:   return(0);
 92: }

 94: /*MC
 95:    PETSCVIEWERADIOS2 - A viewer that writes to an ADIOS2 file


 98: .seealso:  PetscViewerADIOS2Open(), PetscViewerStringSPrintf(), PetscViewerSocketOpen(), PetscViewerDrawOpen(), PETSCVIEWERSOCKET,
 99:            PetscViewerCreate(), PetscViewerASCIIOpen(), PetscViewerBinaryOpen(), PETSCVIEWERBINARY, PETSCVIEWERDRAW, PETSCVIEWERSTRING,
100:            PetscViewerMatlabOpen(), VecView(), DMView(), PetscViewerMatlabPutArray(), PETSCVIEWERASCII, PETSCVIEWERMATLAB,
101:            PetscViewerFileSetName(), PetscViewerFileSetMode(), PetscViewerFormat, PetscViewerType, PetscViewerSetType()

103:   Level: beginner
104: M*/

106: PETSC_EXTERN PetscErrorCode PetscViewerCreate_ADIOS2(PetscViewer v)
107: {
108:   PetscViewer_ADIOS2 *adios2;
109:   PetscErrorCode     ierr;

112:   PetscNewLog(v,&adios2);

114:   v->data                = (void*) adios2;
115:   v->ops->destroy        = PetscViewerDestroy_ADIOS2;
116:   v->ops->setfromoptions = PetscViewerSetFromOptions_ADIOS2;
117:   v->ops->flush          = 0;
118:   adios2->btype            = (PetscFileMode) -1;
119:   adios2->filename         = 0;
120:   adios2->timestep         = -1;

122:   PetscObjectComposeFunction((PetscObject)v,"PetscViewerFileSetName_C",PetscViewerFileSetName_ADIOS2);
123:   PetscObjectComposeFunction((PetscObject)v,"PetscViewerFileGetName_C",PetscViewerFileGetName_ADIOS2);
124:   PetscObjectComposeFunction((PetscObject)v,"PetscViewerFileSetMode_C",PetscViewerFileSetMode_ADIOS2);
125:   return(0);
126: }

128: /*@C
129:    PetscViewerADIOS2Open - Opens a file for ADIOS2 input/output.

131:    Collective

133:    Input Parameters:
134: +  comm - MPI communicator
135: .  name - name of file
136: -  type - type of file
137: $    FILE_MODE_WRITE - create new file for binary output
138: $    FILE_MODE_READ - open existing file for binary input
139: $    FILE_MODE_APPEND - open existing file for binary output

141:    Output Parameter:
142: .  adios2v - PetscViewer for ADIOS2 input/output to use with the specified file

144:    Level: beginner

146:    Note:
147:    This PetscViewer should be destroyed with PetscViewerDestroy().


150: .seealso: PetscViewerASCIIOpen(), PetscViewerPushFormat(), PetscViewerDestroy(), PetscViewerHDF5Open(),
151:           VecView(), MatView(), VecLoad(), PetscViewerSetType(), PetscViewerFileSetMode(), PetscViewerFileSetName()
152:           MatLoad(), PetscFileMode, PetscViewer
153: @*/
154: PetscErrorCode  PetscViewerADIOS2Open(MPI_Comm comm, const char name[], PetscFileMode type, PetscViewer *adios2v)
155: {

159:   PetscViewerCreate(comm, adios2v);
160:   PetscViewerSetType(*adios2v, PETSCVIEWERADIOS2);
161:   PetscViewerFileSetMode(*adios2v, type);
162:   PetscViewerFileSetName(*adios2v, name);
163:   return(0);
164: }