NAME

       slurm_free_front_end_info_msg,    slurm_load_front_end,    slurm_print_front_end_info_msg,
       slurm_print_front_end_table,  slurm_sprint_front_end_table  -   Slurm   front   end   node
       information reporting functions

SYNTAX

       #include <stdio.h>
       #include <slurm/slurm.h>

       void slurm_free_front_end_info_msg (
            front_end_info_msg_t *front_end_info_msg_ptr
       );

       int slurm_load_front_end (
            time_t update_time,
            front_end_info_msg_t **front_end_info_msg_pptr,
       );

       void slurm_print_front_end_info_msg (
            FILE *out_file,
            front_end_info_msg_t *front_end_info_msg_ptr,
            int one_liner
       );

       void slurm_print_front_end_table (
            FILE *out_file,
            front_end_info_t *front_end_ptr,
            int one_liner
       );

       char *slurm_sprint_front_end_table (
            front_end_info_t *front_end_ptr,
            int one_liner
       );

ARGUMENTS

       front_end_info_msg_ptr
              Specifies the pointer to the structure created by slurm_load_front_end.

       front_end_info_msg_pptr
              Specifies  the  double  pointer  to the structure to be created and filled with the
              time of the last front end node update, a record count,  and  detailed  information
              about  each front_end node. Detailed front_end node information is written to fixed
              sized records and includes: name, state, etc.  See slurm.h for full details on  the
              data structure's contents.

       front_end_ptr
              Specifies   a   pointer   to   a   single   front   end   node   record   from  the
              front_end_info_msg_ptr data structure.

       one_liner
              Print one record per line if non-zero.

       out_file
              Specifies the file to print data to.

       update_time
              For all of the following informational calls, if update_time is equal to or greater
              than  the  last time changes where made to that information, new information is not
              returned.  Otherwise all the configuration. job, node,  or  partition  records  are
              returned.

DESCRIPTION

       slurm_free_front_end_info_msg  Release  the  storage generated by the slurm_load_front_end
       function.

       slurm_load_front_end Returns a ont_end_info_msg_t that contains  an  update  time,  record
       count, and array of records for all front end nodes.

       slurm_print_front_end_info_msg  Prints  the  contents of the data structure describing all
       front end node records from the data loaded by the slurm_load_front_end function.

       slurm_print_front_end_table Prints to a file the contents of the data structure describing
       a single front end node record loaded by the slurm_load_front_end function.

       slurm_psrint_front_end_table   Prints  to  memory  the  contents  of  the  data  structure
       describing a single front end node record loaded by the slurm_load_front_end function.

RETURN VALUE

       On success, zero is returned. On error, -1 is  returned,  and  Slurm  error  code  is  set
       appropriately.

ERRORS

       SLURM_NO_CHANGE_IN_DATA Data has not changed since update_time.

       SLURM_PROTOCOL_VERSION_ERROR Protocol version has changed, re-link your code.

       SLURM_PROTOCOL_SOCKET_IMPL_TIMEOUT Timeout in communicating with SLURM controller.

EXAMPLE

       #include <stdio.h>
       #include <slurm/slurm.h>
       #include <slurm/slurm_errno.h>

       int main (int argc, char *argv[])
       {
            int i;
            front_end_info_msg_t *front_end_info_ptr = NULL;
            front_end_info_t *front_end_ptr;

            /* get and dump some node information */
            if ( slurm_load_front_end ((time_t) NULL,
                                  &front_end_buffer_ptr) ) {
                 slurm_perror ("slurm_load_front_end error");
                 exit (1);
            }

            /* The easy way to print... */
            slurm_print_front_end_info_msg (stdout, front_end_buffer_ptr, 0);

            /* A harder way.. */
            for (i = 0; i < front_end_buffer_ptr->record_count; i++) {
                 front_end_ptr = &front_end_buffer_ptr->front_end_array[i];
                 slurm_print_front_end_table(stdout, front_end_ptr, 0);
            }

            /* The hardest way. */
            for (i = 0; i < front_end_buffer_ptr->front_end_count; i++) {
                 printf ("FrontEndName=%s StateCode=%u\n",
                      front_end_buffer_ptr->front_end_array[i].name,
                      front_end_buffer_ptr->front_end_array[i].node_state);
            }
            slurm_free_front_end_info_msg (front_end_buffer_ptr);
            exit (0);
       }

NOTES

       These functions are included in the libslurm library, which must be linked to your process
       for use (e.g. "cc -lslurm myprog.c").

       Some data  structures  contain  index  values  to  cross-reference  each  other.   If  the
       show_flags argument is not set to SHOW_ALL when getting this data, these index values will
       be invalid.

COPYING

       Copyright (C) 2010 Lawrence Livermore National Security.  Produced at  Lawrence  Livermore
       National Laboratory (cf, DISCLAIMER).  CODE-OCEC-09-009. All rights reserved.

       This   file   is  part  of  SLURM,  a  resource  management  program.   For  details,  see
       <http://slurm.schedmd.com/>.

       SLURM is free software; you can redistribute it and/or modify it under the  terms  of  the
       GNU  General Public License as published by the Free Software Foundation; either version 2
       of the License, or (at your option) any later version.

       SLURM is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
       even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
       GNU General Public License for more details.

SEE ALSO

       scontrol(1), slurm_get_errno(3), slurm_load_node(3), slurm_perror(3), slurm_strerror(3)