getjobs.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.
* 
* ---------------------------------------------------------------------------
* For a license to use or redistribute the OpenPBS software under conditions
* other than those described below, or to purchase support for this software,
* please contact Veridian Systems, PBS Products Department ("Licensor") at:
* 
*    www.OpenPBS.org  [phone]                  [e-mail]
*                        877 902-4PBS (US toll-free)
* ---------------------------------------------------------------------------
* 
* 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
* OpenPBS v2.3 in source and binary forms, with or without modification,
* are permitted provided that all of the following conditions are met.
* After December 31, 2001, only conditions 3-6 must be met:
* 
* 1. Commercial and/or non-commercial use of the Software is permitted
*    provided a current software registration is on file at www.OpenPBS.org.
*    If use of this software contributes to a publication, product, or
*    service, proper attribution must be given; see www.OpenPBS.org/credit.html
* 
* 2. Redistribution in any form is only permitted for non-commercial,
*    non-profit purposes.  There can be no charge for the Software or any
*    software incorporating the Software.  Further, there can be no
*    expectation of revenue generated as a consequence of redistributing
*    the Software.
* 
* 3. Any Redistribution of source code must retain the above copyright notice
*    and the acknowledgment contained in paragraph 6, this list of conditions
*    and the disclaimer contained in paragraph 7.
* 
* 4. Any Redistribution in binary form must reproduce the above copyright
*    notice and the acknowledgment contained in paragraph 6, this list of
*    conditions and the disclaimer contained in paragraph 7 in the
*    documentation and/or other materials provided with the distribution.
* 
* 5. Redistributions in any form must be accompanied by information on how to
*    obtain complete source code for the OpenPBS software and any
*    modifications and/or additions to the OpenPBS software.  The source code
*    must either be included in the distribution or be available for no more
*    than the cost of distribution plus a nominal fee, and all modifications
*    and additions to the Software must be freely redistributable by any party
*    (including Licensor) without restriction.
* 
* 6. All advertising materials mentioning features or use of the Software must
*    display the following acknowledgment:
* 
*     "This product includes software developed by NASA Ames Research Center,
*     Lawrence Livermore National Laboratory, and Veridian Information 
*     Solutions, Inc.
*     Visit www.OpenPBS.org for OpenPBS software support,
*     products, and information."
* 
* 7. DISCLAIMER OF WARRANTY
* 
* THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT
* ARE EXPRESSLY DISCLAIMED.
* 
* IN NO EVENT SHALL VERIDIAN CORPORATION, ITS AFFILIATED COMPANIES, OR THE
* U.S. GOVERNMENT OR ANY OF ITS AGENCIES BE LIABLE FOR ANY DIRECT OR INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* 
* This license will be governed by the laws of the Commonwealth of Virginia,
* without reference to its choice of law rules.
*/
/* $Id: getjobs.c,v 1.1.10.4 2000/08/09 00:19:16 hender Exp $ */

/* Get all the jobs queued in the specified queue. */

#include	<stdio.h>
#include	<stdlib.h>

#include        "pbs_error.h"
#include        "pbs_ifl.h"
#include        "log.h"


extern int connector;

#include "toolkit.h"

Job *
schd_get_jobs(char *qname, char *state)
{
    char   *id = "schd_get_jobs";
    int     idx;
    Job    *joblist = NULL, *jobtail = NULL, *new;
    Batch_Status *pbs_head, *pbs_ptr;
    AttrOpList *attr;

    static AttrOpList alist[] =
    {
	{NULL, NULL, NULL, NULL, EQ},
	{NULL, NULL, NULL, NULL, EQ}
    };

    if ((qname == NULL) && (state == NULL)) {
	attr = NULL; /* Caller requested all jobs in all queues. */
    } else {
	/*
	 * Initialize the search criteria since alist is a static struct 
	 * and it will retain the previous search when repeatedly called.
	 */
	for (idx = 0; idx < (sizeof (alist) / sizeof (AttrOpList)); idx++) {
	    alist[idx].next  = NULL;
	    alist[idx].name  = NULL;
	    alist[idx].value = NULL;
	}

	idx = 0;

	/* Was a specific queue requested? */
	if (qname != NULL) {
	    alist[idx].name = ATTR_queue;
	    alist[idx].value = qname;
	    idx++;
	}

	/* Was a specific state requested? */
	if (state != NULL) {
	    alist[idx].name = ATTR_state;
	    alist[idx].value = state;
	    if (idx > 0)
		alist[idx - 1].next = &alist[idx];
	    idx++;
	}

	/* (More tests can be added here.) */

	attr = alist;
    }

    /* Ask PBS for the list of jobs requested */
    pbs_head = pbs_selstat(connector, attr, NULL);

    if ((pbs_head == NULL) && (pbs_errno)) {
	(void)sprintf(log_buffer, "pbs_selstat failed, %d", pbs_errno);
	log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id, log_buffer);
	return (NULL);
    }

    for (pbs_ptr = pbs_head; pbs_ptr != NULL; pbs_ptr = pbs_ptr->next) {
	/*
	 * If there is no list yet, create one.  If there is already a list,
	 * create a new element and place it after the current tail.  The new
	 * element then becomes the tail.
	 */
	new = (Job *)malloc(sizeof(Job));

	if (new == NULL) {
	    log_record(PBSEVENT_SYSTEM, PBS_EVENTCLASS_SERVER, id,
		"malloc(new Job)");
	    /*
	     * Free any allocated storage, set joblist to NULL, and break.
	     * By doing this, the PBS batch_struct list will be freed,
	     * and the NULL joblist returned to the caller.
	     */
	    if (joblist)
		schd_free_jobs(joblist);
	    joblist = NULL;
	    break;
	}

	new->next = NULL;

	if (!joblist) {
	    joblist = new;
	    jobtail = joblist;
	} else {
	    jobtail->next = new;
	    jobtail = jobtail->next;
	}

	/*
	 * 'jobtail' now points to a newly-created Job at the end of the
	 * list of jobs.  Call get_jobinfo() to fill it in with the contents
	 * of this PBS batch_struct description.
	 */
	
	schd_get_jobinfo(pbs_ptr, jobtail);
    }

    /*
     * We are left with a list of Job's that was created the from the list 
     * of Batch_Structs we got from pbs_selstat().  The Job list should
     * contain everything we need to know about the jobs.  It is okay to 
     * free the list returned by PBS, and return the list of Job's.
     */

    pbs_statfree(pbs_head);

    return (joblist);
}