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
*    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.
*/

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

#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>

#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
**		resi		resident memory size for a pid or session
**		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
**		walltime	wall clock time for a pid
**		loadave		current load average
**		quota		quota information (sizes in KB)
*/

static char ident[] = "@(#) sgi/$RCSfile: mom_mach.c,v $ $Revision: 2.7.4.5 $";

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

static	char    procfs[] = "/proc";
static	char    procfmts[] = "/proc/%s";
static	char    procfmtd[] = "/proc/%d";
static	DIR	*pdir = NULL;

static	char	pinfofs[] = "/proc/pinfo";
static	char	pinfofmts[] = "/proc/pinfo/%s";
static	DIR	*pinfodir = NULL;

static	int	pagesize;
static	int	kfd = -1;

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;

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

/*
** local functions and data
*/
static char	*resi		A_((struct rm_attribute *attrib));
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	*walltime	A_((struct rm_attribute *attrib));
static char	*quota		A_((struct rm_attribute *attrib));

extern char	*loadave	A_((struct rm_attribute *attrib));
extern char	*nullproc	A_((struct rm_attribute *attrib));

/*
** local resource array
*/
struct	config	dependent_config[] = {
	{ "resi",	resi },
	{ "totmem",	totmem },
	{ "availmem",	availmem },
	{ "physmem",	physmem },
	{ "ncpus",	ncpus },
	{ "loadave",	loadave },
	{ "walltime",	walltime },
	{ "quota",	quota },
	{ NULL,		nullproc },
};
	
int	kern_addr[] = {
	-1,			/* KSYM_PHYS */
	-1,			/* KSYM_LOAD */
};

#define	KSYM_PHYS	0
#define	KSYM_LOAD	1

#define MAPNUM		512		/* max number of mem segs */

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

	pagesize = getpagesize();

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

	return;
}

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

	log_record(PBSEVENT_SYSTEM, 0, id, "dependent cleanup");
	if (pdir) {
		closedir(pdir);
		pdir = NULL;
	}
	if (pinfodir) {
		closedir(pinfodir);
		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 long 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;
    unsigned long	*ret;
{
	unsigned long	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) {
		if (value > ULONG_MAX / sizeof(int))
			return (PBSE_BADATVAL);
		value *= sizeof(int);
	}
	if (value > ULONG_MAX >>
	    pres->rs_value.at_val.at_size.atsv_shift)
	        return (PBSE_BADATVAL);
	*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 gettime(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.
 */

#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 process (sid or pid) represented by *psp.
*/
static
int
injob(phead, psp)
    list_head	*phead;
    prpsinfo_t	*psp;
{
	task		*ptask;
	pid_t		key;

	key = (psp->pr_sid == 0) ? psp->pr_pid : psp->pr_sid;
	for (ptask = (task *)GET_NEXT(*phead);
			ptask;
			ptask = (task *)GET_NEXT(ptask->ti_jobtask)) {
		if (ptask->ti_qs.ti_sid <= 1)
			continue;
		if (ptask->ti_qs.ti_sid == key)
			return TRUE;
	}
	return FALSE;
}

/*
 * Internal session cpu time decoding routine.
 *
 *	Accepts a job pointer.  Returns the sum of all cpu time
 *	consumed for all tasks executed by the job, in seconds,
 *	adjusted by cputfactor.
 */

static unsigned long cput_sum(phead)
    list_head	*phead;
{
	char			*id = "cput_sum";
	int			fd;
	struct dirent		*dent;
	char			procname[100];
	ulong			cputime, addtime;
	prpsinfo_t		pi;

	DBPRT(("%s: entered\n", id))
	cputime = 0.0;
	rewinddir(pinfodir);
	for (fd = -1; (dent = readdir(pinfodir)) != NULL; close(fd)) {
		if (!isdigit(dent->d_name[0]))
			continue;

		sprintf(procname, pinfofmts, dent->d_name);
		if ((fd = open(procname, O_RDONLY)) == -1)
			continue;
		if (ioctl(fd, PIOCPSINFO, &pi) == -1) {
			sprintf(log_buffer,
				"%s: ioctl(PIOCSTATUS)", procname);
			log_err(errno, id, log_buffer);
			continue;
		}
		if (!injob(phead, &pi))
			continue;
		addtime = tv(pi.pr_time) + tv(pi.pr_ctime);
		cputime += addtime;
		DBPRT(("%s: ses %d pid %d cputime %d\n",
				id, pi.pr_sid, pi.pr_pid, addtime, cputime))
	}

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

/*
 * Return TRUE if any process in the job is over limit for cputime usage.
 */
static int overcpu_proc(phead, limit)
    list_head		*phead;
    unsigned long	limit;
{
	char		*id = "overcpu_proc";
	int		fd;
	char		procname[100];
	struct dirent	*dent;
	prpsinfo_t	pi;

	rewinddir(pinfodir);
	for (fd = -1; (dent = readdir(pinfodir)) != NULL; close(fd)) {
		if (!isdigit(dent->d_name[0]))
			continue;

		sprintf(procname, pinfofmts, dent->d_name);
		if ((fd = open(procname, O_RDONLY)) == -1)
			continue;
		if (ioctl(fd, PIOCPSINFO, &pi) == -1) {
			sprintf(log_buffer,
				"%s: ioctl(PIOCPSINFO)", procname);
			log_err(errno, id, log_buffer);
			continue;
		}

		if (!injob(phead, &pi))
			continue;
		if ((unsigned long)((double)tv(pi.pr_time) *cputfactor) > 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 unsigned long mem_sum(phead)
    list_head	*phead;
{
	static	char		id[] = "mem_sum";
	int			fd;
	struct dirent		*dent;
	char			procname[100];
	int			i;
	ulong_t			segadd;
	prpsinfo_t		pi;

	DBPRT(("%s: entered pagesize %d\n", id, pagesize))

	rewinddir(pdir);
	segadd = 0;

	for (fd = -1; (dent = readdir(pdir)) != NULL; close(fd)) {
		if (!isdigit(dent->d_name[0]))
			continue;

		sprintf(procname, procfmts, dent->d_name);
		if ((fd = open(procname, O_RDONLY)) == -1)
			continue;

		if (ioctl(fd, PIOCPSINFO, &pi) == -1) {
			if (errno != ENOENT) {
				sprintf(log_buffer,
					"%s: ioctl(PIOCPSINFO)", procname);
				log_err(errno, id, log_buffer);
			}
			continue;
		}
		if (!injob(phead, &pi))
			continue;

		DBPRT(("%s: %s(%d:%d) mem %lu\n",
				id, pi.pr_fname, pi.pr_sid, pi.pr_pid,
				(ulong)pi.pr_size * (ulong)pagesize))

		segadd += (ulong)pi.pr_size * (ulong)pagesize;
	}
	DBPRT(("%s: total mem %lu\n\n", id, segadd))
	return (segadd);
}

/*
 * Internal session mem (workingset) size function.
 */
static unsigned long resi_sum(phead)
    list_head		*phead;
{
	static	char		id[]="resi_ses";
	ulong			resisize, resisub;
	int			fd;
	int			num, i;
	char			procname[100];
	struct dirent		*dent;
	ulong_t			lastseg, nbps;
	prmap_sgi_t		map[MAPNUM];
	prmap_sgi_t		*mp;
	prmap_sgi_arg_t		maparg;
	prpsinfo_t	pi;

	rewinddir(pdir);
	resisize = 0;
	lastseg = 99999;
	nbps = (pagesize / sizeof(uint_t)) * pagesize;
				/* sysmacros.h says "4Meg" ...hmmm */
	for (fd = -1; (dent = readdir(pdir)) != NULL; close(fd)) {
		if (!isdigit(dent->d_name[0]))
			continue;

		sprintf(procname, procfmts, dent->d_name);
		if ((fd = open(procname, O_RDONLY)) == -1)
			continue;
		if (ioctl(fd, PIOCPSINFO, &pi) == -1) {
			if (errno != ENOENT) {
				sprintf(log_buffer,
					"%s: ioctl(PIOCPSINFO)", procname);
				log_err(errno, id, log_buffer);
			}
			continue;
		}

		if (!injob(phead, &pi))
                        continue;

		if ((num = ioctl(fd, PIOCMAP_SGI, &maparg)) == -1) {
			log_err(errno, id, "ioctl(PIOCMAP_SGI)");
			continue;
		}

		DBPRT(("%s: %s(%d:%d) rss %lu\n",
				id, pi.pr_fname, pi.pr_sid, pi.pr_pid,
				(ulong)pi.pr_size * (ulong)pagesize))
		resisub = 0;

		for (i=0, mp=map; i<num; i++, mp++) {
			u_long	cnt = mp->pr_mflags >> MA_REFCNT_SHIFT;
			u_long	end = (u_long)mp->pr_vaddr + mp->pr_size - 1;
			u_long	seg1 = (u_long)mp->pr_vaddr / nbps;
			u_long	seg2 = end / nbps;
			u_long	numseg = seg2 - seg1;