petsc-3.4.5 2014-06-29

PetscVFPrintf

 All PETSc standard out and error messages are sent through this function; so, in theory, this can can be replaced with something that does not simply write to a file.

Synopsis

PetscErrorCode  PetscVFPrintfDefault(FILE *fd,const char *format,va_list Argp)
To use, write your own function for example, .PetscErrorCode mypetscvfprintf(FILE *fd,const char format[],va_list Argp) .{ $ PetscErrorCode ierr; 


 PetscFunctionBegin;



  if (fd != stdout && fd != stderr) {  handle regular files



     ierr = PetscVFPrintfDefault(fd,format,Argp);CHKERR(ierr);



 } else {



    char   buff[BIG];



    size_t length;



    ierr = PetscVSNPrintf(buff,BIG,format,&length,Argp);CHKERRQ(ierr);



    now send buff to whatever stream or whatever you want



}



PetscFunctionReturn(0);


.} then before the call to PetscInitialize() do the assignment


   PetscVFPrintf = mypetscvfprintf;




Notes: For error messages this may be called by any process, for regular standard out it is
called only by process 0 of a given communicator


Developer Notes: this could be called by an error handler, if that happens then a recursion of the error handler may occur
and a crash





See Also

PetscVSNPrintf(), PetscErrorPrintf()





Level:developer

Location:src/sys/fileio/mprint.c

Index of all Sys routines

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