pbsd_selectj.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.
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* U.S. GOVERNMENT OR ANY OF ITS AGENCIES BE LIABLE FOR ANY DIRECT OR INDIRECT,
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*/
/*
 *	This file contines two main library entries:
 *		pbs_selectjob()
 *		pbs_selstat()
 *
 *
 *	pbs_selectjob() - the SelectJob request
 *		Return a list of job ids that meet certain selection criteria.
*/

#include <pbs_config.h>   /* the master config generated by configure */

#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "libpbs.h"
#include "dis.h"

static char ident[] = "@(#) $RCSfile: pbsD_selectj.c,v $ $Revision: 2.1.10.5 $";

static int PBSD_select_put A_((int, int, struct attropl *, char *));
static char **PBSD_select_get A_((int));
static int PBSD_select_put A_((int, int, struct attropl *, char *));

char ** pbs_selectjob(c, attrib, extend)
	int c;
	struct attropl *attrib;
	char *extend;
{

	if (PBSD_select_put(c, PBS_BATCH_SelectJobs, attrib, extend) == 0)
		return ( PBSD_select_get(c) );
	else
		return ((char **)0);
}

/*
 * 	pbs_selstat() - Selectable status
 *		Return status information for jobs that meet certain selection
 *		criteria.  This is a short-cut combination of pbs_selecljob()
 *		and repeated pbs_statjob().
 */

struct batch_status * pbs_selstat(c, attrib, extend)
	int c;
	struct attropl *attrib;
	char *extend;
{
	extern struct batch_status *PBSD_status_get A_((int c));

	if (PBSD_select_put(c, PBS_BATCH_SelStat, attrib, extend) == 0) 
		return ( PBSD_status_get(c) );
	else
		return ((struct batch_status *)0);
}
	

static int PBSD_select_put(c, type, attrib, extend)
	int c;
	int type;
	struct attropl *attrib;
	char * extend;
{
	int rc;
	int sock;

	sock = connection[c].ch_socket;

	/* setup DIS support routines for following DIS calls */

	DIS_tcp_setup(sock);

	if ( (rc = encode_DIS_ReqHdr(sock, type, pbs_current_user)) ||
	     (rc = encode_DIS_attropl(sock, attrib)) ||
	     (rc = encode_DIS_ReqExtend(sock, extend)) ) {
		connection[c].ch_errtxt = strdup(dis_emsg[rc]);
		return (pbs_errno = PBSE_PROTOCOL);
	}

	/* write data */

	if (DIS_tcp_wflush(sock)) {
		return (pbs_errno = PBSE_PROTOCOL);
	}

	return 0;
}


static char ** PBSD_select_get(c)
	int c;
{
	int   i;
	struct batch_reply *reply;
	int   njobs;
	char *sp;
	int   stringtot;
	size_t totsize;
	struct brp_select *sr;
	char **retval = (char **)NULL;

	/* read reply from stream */

	reply = PBSD_rdrpy(c);
	if ( reply == NULL) {
                pbs_errno = PBSE_PROTOCOL;
	} else if ( reply->brp_choice != 0  &&
	            reply->brp_choice != BATCH_REPLY_CHOICE_Text &&
	            reply->brp_choice != BATCH_REPLY_CHOICE_Select) {
		pbs_errno = PBSE_PROTOCOL;
	} else if ( connection[c].ch_errno == 0 ) {
		/* process the reply -- first, build a linked 
		  list of the strings we extract from the reply, keeping 
		  track of the amount of space used...
		*/
		stringtot = 0;
		njobs = 0;
		sr = reply->brp_un.brp_select;
		while( sr != (struct brp_select *)NULL ) {
			stringtot += strlen(sr->brp_jobid) + 1;
			njobs++;
			sr = sr->brp_next;
		}
		/* ...then copy all the strings into one of "Bob's
		   structures", freeing all strings we just allocated...
		*/
		
		totsize = stringtot + (njobs+1) * (sizeof (char *));
		retval = (char **)malloc( totsize );
		if( retval == (char **)NULL ) {
			pbs_errno = PBSE_SYSTEM;
			return (char **)NULL;
		}
		sr = reply->brp_un.brp_select;
		sp = (char *)retval + (njobs + 1) * sizeof (char *);
		for( i=0; i<njobs; i++ ) {
			retval[i] = sp;
			strcpy(sp,sr->brp_jobid);
			sp += strlen(sp) + 1;
			sr = sr->brp_next;
		}
		retval[i] = (char *)NULL;
	}
	
	PBSD_FreeReply(reply);

	return retval;
}