mom_mach.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
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* 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.
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* 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,
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* 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.
*/

#include <pbs_config.h>

#include <assert.h>
#include <limits.h>
#include <stdio.h>
#include <unistd.h>
#include <dirent.h>
#include <fcntl.h>
#include <errno.h>
#include <strings.h>
#include <pwd.h>
#include <mntent.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/procfs.h>
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/quota.h>
#include <sys/statfs.h>
#include <sys/sysmacros.h>
#include <sys/sysmp.h>
#include <sys/resource.h>
#if MOM_CHECKPOINT == 1
#include <ckpt.h>
#endif	/* MOM_CHECKPOINT */
#if	NODEMASK != 0
#include <sys/pmo.h>
#include <sys/syssgi.h>
#include <sys/nodemask.h>
#endif	/* NODEMASK */
#include <arraysvcs.h>

#include "pbs_error.h"
#include "portability.h"
#include "list_link.h"
#include "server_limits.h"
#include "attribute.h"
#include "resource.h"
#include "job.h"
#include "log.h"
#include "mom_mach.h"
#include "resmon.h"
#include "../rm_dep.h"

/*
**	System dependent code to gather information for the resource
**	monitor for a Silicon Graphics (SGI) machine.
**
**	Resources known by this code:
**		cput		cpu time for a pid or session
**		mem		memory size for a pid or session in KB
**		sessions	list of sessions in the system
**		pids		list of pids in a session
**		nsessions	number of sessions in the system
**		nusers		number of users in the system
**		totmem		total memory size in KB
**		availmem	available memory size in KB
**		ncpus		number of cpus
**		physmem		physical memory size in KB
**		size		size of a file or filesystem in KB
**		idletime	seconds of idle time
**		loadave		current load average
**		quota		quota information (sizes in KB)
*/

static char ident[] = "@(#) sgi/$RCSfile: mom_mach.c,v $ $Revision: 2.14.2.1.2.6 $";

#define SGI_ZOMBIE_WRONG 1
#define COMPLEX_MEM_CALC 0

#ifndef TRUE
#define FALSE	0
#define TRUE	1
#endif	/* TRUE */

#if COMPLEX_MEM_CALC==1
static  char            procfs[] = "/proc";
static  char            procfmts[] = "/proc/%s";
#else
static  char            procfs[] = "/proc/pinfo";
static  char            procfmts[] = "/proc/pinfo/%s";
#endif /* COMPLEX_MEM_CALC */
static	DIR		*pdir = NULL;
static	int		pagesize;
static	int		kfd = -1;
static  time_t		sampletime;

#define	TBL_INC		100		/* initial proc table */
#define MAPNUM		512		/* max number of mem segs */

static	int		nproc = 0;
static	int		max_proc = 0;
struct	proc_info {
	prpsinfo_t	info;
#if COMPLEX_MEM_CALC==1
	int		map_num;
	prmap_sgi_t	*map;
#endif /* COMPLEX_MEM_CALC */
	ash_t		procash;
};
static	struct	proc_info	*proc_array = NULL;

extern	char	*ret_string;
time_t		wait_time = 10;
extern	char	extra_parm[];
extern	char	no_parm[];

extern	struct	pbs_err_to_txt	pbs_err_to_txt[];
extern	time_t			time_now;
extern	time_t			last_scan;

/*
** external functions and data
*/
extern	struct	config		*search A_((struct config *, char *));
extern	struct	rm_attribute	*momgetattr A_((char *));
extern	int			rm_errno;
extern	unsigned	int	reqnum;
extern	double	cputfactor;
extern	double	wallfactor;
extern char	*loadave	A_((struct rm_attribute *attrib));

/*
** local functions and data
*/
static char	*totmem		A_((struct rm_attribute *attrib));
static char	*availmem	A_((struct rm_attribute *attrib));
static char	*physmem	A_((struct rm_attribute *attrib));
static char	*ncpus		A_((struct rm_attribute *attrib));
static char	*quota		A_((struct rm_attribute *attrib));
#if	NODEMASK != 0
static char	*availmask	A_((struct rm_attribute *attrib));
#endif	/* NODEMASK */
extern char	*nullproc	A_((struct rm_attribute *attrib));

/*
** local resource array
*/
struct	config	dependent_config[] = {
	{ "totmem",	totmem },
	{ "availmem",	availmem },
	{ "physmem",	physmem },
	{ "ncpus",	ncpus },
	{ "loadave",	loadave },
	{ "quota",	quota },
#if	NODEMASK != 0
	{ "availmask",	availmask },
#endif	/* NODEMASK */
	{ NULL,		nullproc },
};
	
off_t	kern_addr[] = {
	-1,			/* KSYM_PHYS */
	-1,			/* KSYM_LOAD */
};

#define	KSYM_PHYS	0
#define	KSYM_LOAD	1

void
dep_initialize()
{
	int	 i;
	char	*id = "dep_initialize";
	static	char	mem[] = "/dev/kmem";

	pagesize = getpagesize();

	if ((pdir = opendir(procfs)) == NULL) {
		log_err(errno, id, "opendir");
		return;
	}

	kern_addr[KSYM_PHYS] = SEEKLIMIT & sysmp(MP_KERNADDR, MPKA_PHYSMEM);
	kern_addr[KSYM_LOAD] = SEEKLIMIT & sysmp(MP_KERNADDR, MPKA_AVENRUN);

	if ((kfd = open(mem, O_RDONLY)) == -1) {
		log_err(errno, id, mem);
		return;
	}

	/* insure /dev/kmem closed on exec */

	if ((i = fcntl(kfd,  F_GETFD)) == -1) {
		log_err(errno, id, "F_GETFD");
	}
	i |= FD_CLOEXEC;
	if (fcntl(kfd, F_SETFD, i) == -1) {
		log_err(errno, id, "F_SETFD");
	}

	return;
}

void
dep_cleanup()
{
	char	*id = "dep_cleanup";

	log_record(PBSEVENT_SYSTEM, 0, id, "dependent cleanup");
	if (pdir) {
		closedir(pdir);
		pdir = NULL;
	}
	if (kfd != -1)
		close(kfd);
}

/*
**	Don't need any periodic procsessing.
*/
void
end_proc()
{
	return;
}

/*
 * Internal size decoding routine.
 *
 *	Accepts a resource pointer and a pointer to the unsigned 64 bit integer
 *	to receive the decoded value.  It returns a PBS error code, and the
 *	decoded value in the unsigned long integer.
 *
 *		sizeof(word) = sizeof(int)
 */

static int getsize(pres, ret)
    resource		*pres;
    rlim64_t		*ret;
{
	rlim64_t	value;

	if (pres->rs_value.at_type != ATR_TYPE_SIZE)
		return (PBSE_ATTRTYPE);
	value = pres->rs_value.at_val.at_size.atsv_num;
	if (pres->rs_value.at_val.at_size.atsv_units ==
	    ATR_SV_WORDSZ) {
		value *= sizeof(int);
	}
	*ret = value << pres->rs_value.at_val.at_size.atsv_shift;

	return (PBSE_NONE);
}

/*
 * Internal time decoding routine.
 *
 *	Accepts a resource pointer and a pointer to the unsigned long integer
 *	to receive the decoded value.  It returns a PBS error code, and the
 *	decoded value of time in seconds in the unsigned long integer.
 */

static int getlong(pres, ret)
    resource		*pres;
    unsigned long	*ret;
{

	if (pres->rs_value.at_type != ATR_TYPE_LONG)
		return (PBSE_ATTRTYPE);
	if (pres->rs_value.at_val.at_long < 0)
	        return (PBSE_BADATVAL);
	*ret = pres->rs_value.at_val.at_long;

	return (PBSE_NONE);
}

/*
 * Time decoding macro.  Accepts a timestruc_t pointer.  Returns unsigned long
 * time in seconds, rounded.
 */

#define tv(val) (ulong)((val).tv_sec + ((val).tv_nsec + 500000000)/1000000000)

/*
**      Scan a list of tasks and return true if one of them matches
**      the ash.
*/
static
int
injob(pjob, pash)
    job		*pjob;
    ash_t	*pash;
{
	ash_t	ash;

	sscanf(pjob->ji_globid, "%llx", &ash);
	return (ash == *pash);
}

/*
 * Internal session cpu time decoding routine.
 *
 *	Accepts a head of a task list.  Returns the sum of all cpu time
 *	consumed for all tasks in the list, in seconds, adjusted by cputfactor.
 */
static unsigned long cput_sum(pjob)
    job		   *pjob;
{
	char			*id = "cput_ses";
	int			i;
	int			inproc = 0;
	ulong			cputime;
	ulong			deltat;
	int			nps = 0;
	ulong			proctime;
	ulong			perc;
	prpsinfo_t		*pi;

	cputime = 0;
	if (pjob->ji_globid == NULL) {
		pjob->ji_flags |= MOM_NO_PROC;
		return (cputime);
	}

	for (i=0; i<nproc; i++) {
		pi = &proc_array[i].info;

		if (!injob(pjob, &proc_array[i].procash))
		   if (!inproc)
			continue;
		   else
			break;

		inproc = 1;

		nps++;
		proctime = tv(pi->pr_time) + tv(pi->pr_ctime);
		cputime += proctime;
		DBPRT(("%s: ses %d pid %d pcput %lu cputime %lu\n", id, pi->pr_sid, pi->pr_pid, proctime, cputime))
	}

	if (nps == 0)
		pjob->ji_flags |= MOM_NO_PROC;

	return ((unsigned long)((double)cputime * cputfactor));
}

/*
 * Return TRUE if any process in the job is over limit for cputime usage.
 */
static int overcpu_proc(pjob, limit)
    job			*pjob;
    unsigned long	limit;
{
	ulong		cputime;
	int		i;
	int		inproc = 0;
	prpsinfo_t	*pi;

	if (pjob->ji_globid == NULL)
		return FALSE;

	for (i=0; i<nproc; i++) {
		pi = &proc_array[i].info;

		if (!injob(pjob, &proc_array[i].procash))
		    if (!inproc)
			continue;
		    else
			break;

		inproc = 1;
		cputime = tv(pi->pr_time) + tv(pi->pr_ctime);

		if (cputime > limit)
			return (TRUE);
        }

	return (FALSE);
}

/*
 * Internal session memory usage function.
 *
 *	Returns the total number of bytes of address
 *      space consumed by all current tasks within the list of tasks.
 */
static rlim64_t mem_sum(pjob)
    job		*pjob;
{
	static	char		id[] = "mem_sum";
	int			i;
	int			inproc = 0;
	rlim64_t		segadd;
	prpsinfo_t		*pi;

	DBPRT(("%s: entered pagesize %d\n", id, pagesize))
	segadd = 0;
	if (pjob->ji_globid == NULL)
		return (segadd);

	for (i=0; i<nproc; i++) {
		pi = &proc_array[i].info;

		if (!injob(pjob, &proc_array[i].procash))
		    if (!inproc)
			continue;
		    else
			break;

		DBPRT(("%s: %s(%d:%d) mem %llu\n",
			id, pi->pr_fname, pi->pr_sid, pi->pr_pid,
			(rlim64_t)((rlim64_t)pi->pr_size * (rlim64_t)pagesize)))

		segadd += (rlim64_t)((rlim64_t)pi->pr_size*(rlim64_t)pagesize);
	}
	DBPRT(("%s: total mem %llu\n\n", id, segadd))
	return (segadd);
}

#if COMPLEX_MEM_CALC==1
/*
 * Internal session resident memory size function.  COMPLEX VERSION
 *
 *	Returns in a 64 bit intege the number of bytes used by session
 */
static rlim64_t resi_sum(pjob)
    job		*pjob;
{
	static	char		id[] = "resi_sum";