sort.c

openPBS的开放源代码

/*
*         OpenPBS (Portable Batch System) v2.3 Software License
* 
* Copyright (c) 1999-2000 Veridian Information Solutions, Inc.
* All rights reserved.
* 
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* please contact Veridian Systems, PBS Products Department ("Licensor") at:
* 
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* 
* This license covers use of the OpenPBS v2.3 software (the "Software") at
* your site or location, and, for certain users, redistribution of the
* Software to other sites and locations.  Use and redistribution of
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* 
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*/

#include <stdio.h>
#include "data_types.h"
#include "sort.h"
#include "job_info.h"
#include "misc.h"
#include "globals.h"
#include "fairshare.h"

static char *ident = "$Id: sort.c,v 2.2.4.4 2000/08/09 00:19:04 hender Exp $";


/*
 *	sort.c
 *
 *	This file will hold the compare functions used by qsort
 *	to sort the jobs
 *
 */


/*
 *
 *      cmp_queue_prio_dsc - sort queues in decending priority
 *
 */
int cmp_queue_prio_dsc( const void *q1, const void *q2 )
{
  if( (*(queue_info **) q1) -> priority < (*(queue_info **) q2) -> priority )
    return 1;
  else if((*(queue_info **) q1) -> priority > (*(queue_info **) q2) -> priority)
    return -1;
  else
    return 0;
}

/*
 *
 *      cmp_queue_prio_asc - sort queues by ascending priority
 *
 */
int cmp_queue_prio_asc( const void *q1, const void *q2 )
{
  if( (*(queue_info **) q1) -> priority < (*(queue_info **) q2) -> priority )
    return -1;
  else if((*(queue_info **) q1) -> priority > (*(queue_info **) q2) -> priority)
    return 1;
  else
    return -1;
}

/*
 *
 *      cmp_job_walltime_asc - sort jobs by requested walltime 
 *					in ascending order.
 *
 */
int cmp_job_walltime_asc(const void *j1, const void *j2)
{
  resource_req *req1, *req2;

  req1 = find_resource_req( (*(job_info**) j1) -> resreq, "walltime");
  req2 = find_resource_req( (*(job_info**) j2) -> resreq, "walltime");

  if( req1 != NULL && req2 != NULL )
  {
    if( req1 -> amount < req2 -> amount )
      return -1;
    else if( req1 -> amount == req2 -> amount )
      return 0;
    else
      return 1;
  }
  else
    return 0;
}

/*
 *
 *      cmp_job_walltime_dsc - sort jobs by requested walltime 
 *					in ascending order.
 *
 */
int cmp_job_walltime_dsc(const void *j1, const void *j2)
{
  resource_req *req1, *req2;

  req1 = find_resource_req( (*(job_info**) j1) -> resreq, "walltime");
  req2 = find_resource_req( (*(job_info**) j2) -> resreq, "walltime");

  if( req1 != NULL && req2 != NULL )
  {
    if( req1 -> amount < req2 -> amount )
      return 1;
    else if( req1 -> amount == req2 -> amount )
      return 0;
    else
      return -1;
  }
  else
    return 0;
}

/*
 *
 *      cmp_job_cput_asc - sort jobs by requested cput time in ascending order.
 *
 */
int cmp_job_cput_asc(const void *j1, const void *j2)
{
  resource_req *req1, *req2;

  req1 = find_resource_req( (*(job_info**) j1) -> resreq, "cput");
  req2 = find_resource_req( (*(job_info**) j2) -> resreq, "cput");

  if( req1 != NULL && req2 != NULL )
  {
    if( req1 -> amount < req2 -> amount )
      return -1;
    else if( req1 -> amount == req2 -> amount )
      return 0;
    else
      return 1;
  }
  else
    return 0;
}

/*
 *
 *      cmp_job_cput_dsc - sort jobs by requested cput time in descending order.
 *
 */
int cmp_job_cput_dsc(const void *j1, const void *j2)
{
  resource_req *req1, *req2;

  req1 = find_resource_req( (*(job_info**) j1) -> resreq, "cput");
  req2 = find_resource_req( (*(job_info**) j2) -> resreq, "cput");

  if( req1 != NULL && req2 != NULL )
  {
    if( req1 -> amount < req2 -> amount )
      return 1;
    else if( req1 -> amount == req2 -> amount )
      return 0;
    else
      return -1;
  }
  else
    return 0;
}

/*
 *
 *      cmp_job_mem_asc - sort jobs by requested mem time in ascending order.
 *
 */
int cmp_job_mem_asc(const void *j1, const void *j2)
{
  resource_req *req1, *req2;

  req1 = find_resource_req( (*(job_info**) j1) -> resreq, "mem");
  req2 = find_resource_req( (*(job_info**) j2) -> resreq, "mem");

  if( req1 != NULL && req2 != NULL )
  {
    if( req1 -> amount < req2 -> amount )
      return -1;
    else if( req1 -> amount == req2 -> amount )
      return 0;
    else
      return 1;
  }
  else
    return 0;
}

/*
 *
 *      cmp_job_mem_dsc - sort jobs by requested mem time in descending order.
 *
 */
int cmp_job_mem_dsc(const void *j1, const void *j2)
{
  resource_req *req1, *req2;

  req1 = find_resource_req( (*(job_info**) j1) -> resreq, "mem");
  req2 = find_resource_req( (*(job_info**) j2) -> resreq, "mem");

  if( req1 != NULL && req2 != NULL )
  {
    if( req1 -> amount < req2 -> amount )
      return 1;
    else if( req1 -> amount == req2 -> amount )
      return 0;
    else
      return -1;
  }
  else
    return 0;
}

/*
 *
 *      cmp_job_prio_asc - sort jobs by ascending priority
 *
 */
int cmp_job_prio_asc( const void *j1, const void *j2 )
{
  if( (*(job_info **) j1) -> priority < (*(job_info **) j2) -> priority )
    return -1;
  else if((*(job_info **) j1) -> priority > (*(job_info **) j2) -> priority)
    return 1;
  else
    return 0;
}

/*
 *
 *      cmp_job_prio_dsc - sort jobs by descending priority
 *
 */
int cmp_job_prio_dsc( const void *j1, const void *j2 )
{
  if( (*(job_info **) j1) -> priority < (*(job_info **) j2) -> priority )
    return 1;
  else if((*(job_info **) j1) -> priority > (*(job_info **) j2) -> priority)
    return -1;
  else
    return 0;
}

/*
 *
 *	cmp_fair_share - compare on fair share percentage only.  
 *			 This is for strict priority.
 *
 */
int cmp_fair_share( const void *j1, const void *j2 )
{
  group_info *g1, *g2;

  g1 = (*(job_info **) j1) -> ginfo;
  g2 = (*(job_info **) j2) -> ginfo;

  if( g1 -> percentage > g2 -> percentage )
    return 1;
  else if( g1 -> percentage == g2 -> percentage )
    return 0;
  else
    return 1;
}

/* multi keyed sorting 
 * call compare function to sort for the first key
 * if the two keys are equal, call the compare funciton for the second key
 * repeat for all keys
 */


/*
 *	multi_sort - a multi keyed sorting compare function
 */	
int multi_sort( const void *j1, const void *j2 )
{
  int ret = 0;
  int i;

  for(i = 1; i <= num_sorts && ret == 0 && cstat.sort_by[i].sort != NO_SORT;i++)
    ret = cstat.sort_by[i].cmp_func(j1, j2);
  
  return ret;
}

/*
 *
 *	cmp_sort - entrypoint into job sort used by qsort
 *
 */
int cmp_sort( const void *v1, const void *v2 )
{
  /* sort on the internal scheduler priority (used for starvation code) */
  if((*(job_info **) v1) -> sch_priority < (*(job_info **) v2) -> sch_priority)
    return 1;
  else if((*(job_info **) v1)->sch_priority > (*(job_info **) v2)->sch_priority)
    return -1;
  else
    return cstat.sort_by -> cmp_func(v1, v2);
}