1: #include <petsc/private/snesimpl.h>  /*I "petscsnes.h" I*/
  2: #include <petscviewersaws.h>

  4: typedef struct {
  5:   PetscViewer    viewer;
  6: } SNESMonitor_SAWs;

 10: /*@C
 11:    SNESMonitorSAWsCreate - create an SAWs monitor context

 13:    Collective

 15:    Input Arguments:
 16: .  snes - SNES to monitor

 18:    Output Arguments:
 19: .  ctx - context for monitor

 21:    Level: developer

 23: .seealso: SNESMonitorSAWs(), SNESMonitorSAWsDestroy()
 24: @*/
 25: PetscErrorCode SNESMonitorSAWsCreate(SNES snes,void **ctx)
 26: {
 27:   PetscErrorCode  ierr;
 28:   SNESMonitor_SAWs *mon;

 31:   PetscNewLog(snes,&mon);
 32:   mon->viewer = PETSC_VIEWER_SAWS_(PetscObjectComm((PetscObject)snes));
 33:   if (!mon->viewer) SETERRQ(PetscObjectComm((PetscObject)snes),PETSC_ERR_PLIB,"Cannot create SAWs default viewer");
 34:   *ctx = (void*)mon;
 35:   return(0);
 36: }

 40: /*@C
 41:    SNESMonitorSAWsDestroy - destroy a monitor context created with SNESMonitorSAWsCreate()

 43:    Collective

 45:    Input Arguments:
 46: .  ctx - monitor context

 48:    Level: developer

 50: .seealso: SNESMonitorSAWsCreate()
 51: @*/
 52: PetscErrorCode SNESMonitorSAWsDestroy(void **ctx)
 53: {
 54:   PetscErrorCode  ierr;

 57:   PetscFree(*ctx);
 58:   return(0);
 59: }

 63: /*@C
 64:    SNESMonitorSAWs - monitor solution using SAWs

 66:    Logically Collective on SNES

 68:    Input Parameters:
 69: +  snes   - iterative context
 70: .  n     - iteration number
 71: .  rnorm - 2-norm (preconditioned) residual value (may be estimated).
 72: -  ctx -  PetscViewer of type SAWs

 74:    Level: advanced

 76: .keywords: SNES, monitor, SAWs

 78: .seealso: PetscViewerSAWsOpen()
 79: @*/
 80: PetscErrorCode SNESMonitorSAWs(SNES snes,PetscInt n,PetscReal rnorm,void *ctx)
 81: {
 82:   PetscErrorCode   ierr;
 83:   PetscMPIInt      rank;


 88:   MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
 89:   if (!rank) {
 90:     PetscStackCallSAWs(SAWs_Register,("/PETSc/snes_monitor_saws/its",&snes->iter,1,SAWs_READ,SAWs_INT));
 91:     PetscStackCallSAWs(SAWs_Register,("/PETSc/snes_monitor_saws/rnorm",&snes->norm,1,SAWs_READ,SAWs_DOUBLE));
 92:     PetscSAWsBlock();
 93:   }
 94:   return(0);
 95: }