Actual source code: smatlab.c


  2: #include <petscsys.h>

  4: /*@C
  5:     PetscStartMatlab - starts up MATLAB with a MATLAB script

  7:     Logically Collective, but only processor zero in the communicator does anything

  9:     Input Parameters:
 10: +     comm - MPI communicator
 11: .     machine - optional machine to run MATLAB on
 12: -     script - name of script (without the .m)

 14:     Output Parameter:
 15: .     fp - a file pointer returned from PetscPOpen()

 17:     Level: intermediate

 19:     Notes:
 20:      This overwrites your matlab/startup.m file

 22:      The script must be in your MATLAB path or current directory

 24:      Assumes that all machines share a common file system

 26: .seealso: PetscPOpen(), PetscPClose()
 27: @*/
 28: PetscErrorCode  PetscStartMatlab(MPI_Comm comm,const char machine[],const char script[],FILE **fp)
 29: {
 30:   FILE           *fd;
 31:   char           command[512];
 32: #if defined(PETSC_HAVE_UCBPS) && defined(PETSC_HAVE_POPEN)
 33:   char           buf[1024],*found;
 34:   PetscMPIInt    rank;
 35: #endif

 37: #if defined(PETSC_HAVE_UCBPS) && defined(PETSC_HAVE_POPEN)
 38:   /* check if MATLAB is not already running */
 39:   PetscPOpen(comm,machine,"/usr/ucb/ps -ugxww | grep matlab | grep -v grep","r",&fd);
 40:   MPI_Comm_rank(comm,&rank);
 41:   if (rank == 0) found = fgets(buf,1024,fd);
 42:   MPI_Bcast(&found,1,MPI_CHAR,0,comm);
 43:   PetscPClose(comm,fd);
 44:   if (found) return 0;
 45: #endif

 47:   if (script) {
 48:     /* the remote machine won't know about current directory, so add it to MATLAB path */
 49:     /* the extra \" are to protect possible () in the script command from the shell */
 50:     sprintf(command,"echo \"delete ${HOMEDIRECTORY}/matlab/startup.m ; path(path,'${WORKINGDIRECTORY}'); %s  \" > ${HOMEDIRECTORY}/matlab/startup.m",script);
 51: #if defined(PETSC_HAVE_POPEN)
 52:     PetscPOpen(comm,machine,command,"r",&fd);
 53:     PetscPClose(comm,fd);
 54: #endif
 55:   }
 56: #if defined(PETSC_HAVE_POPEN)
 57:   PetscPOpen(comm,machine,"xterm -display ${DISPLAY} -e matlab -nosplash","r",fp);
 58: #endif
 59:   return 0;
 60: }