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/*
KSysGuard, the KDE System Guard
Copyright (c) 1999, 2000 Chris Schlaeger <cs@kde.org>
Solaris support by Torsten Kasch <tk@Genetik.Uni-Bielefeld.DE>
This program is free software; you can redistribute it and/or
modify it under the terms of version 2 of the GNU General Public
License as published by the Free Software Foundation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "config.h"
/* Stop <sys/swap.h> from crapping out on 32-bit architectures. */
#if !defined(_LP64) && _FILE_OFFSET_BITS == 64
# undef _FILE_OFFSET_BITS
# define _FILE_OFFSET_BITS 32
#endif
#include <sys/stat.h>
#include <sys/swap.h>
#include <vm/anon.h>
#ifdef HAVE_KSTAT
#include <kstat.h>
#endif
#include "ksysguardd.h"
#include "Command.h"
#include "Memory.h"
static int Dirty = 1;
static t_memsize totalmem = (t_memsize) 0;
static t_memsize freemem = (t_memsize) 0;
static long totalswap = 0L;
static long freeswap = 0L;
static struct anoninfo am_swap;
/*
* this is borrowed from top's m_sunos5 module
* used by permission from William LeFebvre
*/
static int pageshift;
static long (*p_pagetok) ();
#define pagetok(size) ((*p_pagetok)(size))
long pagetok_none( long size ) {
return( size );
}
long pagetok_left( long size ) {
return( size << pageshift );
}
long pagetok_right( long size ) {
return( size >> pageshift );
}
void initMemory( struct SensorModul* sm ) {
long i = sysconf( _SC_PAGESIZE );
pageshift = 0;
while( (i >>= 1) > 0 )
pageshift++;
/* calculate an amount to shift to K values */
/* remember that log base 2 of 1024 is 10 (i.e.: 2^10 = 1024) */
pageshift -= 10;
/* now determine which pageshift function is appropriate for the
result (have to because x << y is undefined for y < 0) */
if( pageshift > 0 ) {
/* this is the most likely */
p_pagetok = pagetok_left;
} else if( pageshift == 0 ) {
p_pagetok = pagetok_none;
} else {
p_pagetok = pagetok_right;
pageshift = -pageshift;
}
#ifdef HAVE_KSTAT
registerMonitor( "mem/physical/free", "integer",
printMemFree, printMemFreeInfo, sm );
registerMonitor( "mem/physical/used", "integer",
printMemUsed, printMemUsedInfo, sm );
#endif
registerMonitor( "mem/swap/free", "integer",
printSwapFree, printSwapFreeInfo, sm );
registerMonitor( "mem/swap/used", "integer",
printSwapUsed, printSwapUsedInfo, sm );
}
void exitMemory( void ) {
}
int updateMemory( void ) {
long swaptotal;
long swapfree;
long swapused;
#ifdef HAVE_KSTAT
kstat_ctl_t *kctl;
kstat_t *ksp;
kstat_named_t *kdata;
#endif /* HAVE_KSTAT */
swaptotal = swapused = swapfree = 0L;
/*
* Retrieve overall swap information from anonymous memory structure -
* which is the same way "swap -s" retrieves it's statistics.
*
* swapctl(SC_LIST, void *arg) does not return what we are looking for.
*/
if (swapctl(SC_AINFO, &am_swap) == -1)
return(0);
swaptotal = am_swap.ani_max;
swapused = am_swap.ani_resv;
swapfree = swaptotal - swapused;
totalswap = pagetok(swaptotal);
freeswap = pagetok(swapfree);
#ifdef HAVE_KSTAT
/*
* get a kstat handle and update the user's kstat chain
*/
if( (kctl = kstat_open()) == NULL )
return( 0 );
while( kstat_chain_update( kctl ) != 0 )
;
totalmem = pagetok( sysconf( _SC_PHYS_PAGES ));
/*
* traverse the kstat chain to find the appropriate statistics
*/
if( (ksp = kstat_lookup( kctl, "unix", 0, "system_pages" )) == NULL )
return( 0 );
if( kstat_read( kctl, ksp, NULL ) == -1 )
return( 0 );
/*
* lookup the data
*/
kdata = (kstat_named_t *) kstat_data_lookup( ksp, "freemem" );
if( kdata != NULL )
freemem = pagetok( kdata->value.ui32 );
kstat_close( kctl );
#endif /* ! HAVE_KSTAT */
Dirty = 0;
return( 0 );
}
void printMemFreeInfo( const char *cmd ) {
if( Dirty )
updateMemory();
fprintf(CurrentClient, "Free Memory\t0\t%ld\tKB\n", totalmem );
}
void printMemFree( const char *cmd ) {
if( Dirty )
updateMemory();
fprintf(CurrentClient, "%ld\n", freemem );
}
void printMemUsedInfo( const char *cmd ) {
if( Dirty )
updateMemory();
fprintf(CurrentClient, "Used Memory\t0\t%ld\tKB\n", totalmem );
}
void printMemUsed( const char *cmd ) {
if( Dirty )
updateMemory();
fprintf(CurrentClient, "%ld\n", totalmem - freemem );
}
void printSwapFreeInfo( const char *cmd ) {
if( Dirty )
updateMemory();
fprintf(CurrentClient, "Free Swap\t0\t%ld\tKB\n", totalswap );
}
void printSwapFree( const char *cmd ) {
if( Dirty )
updateMemory();
fprintf(CurrentClient, "%ld\n", freeswap );
}
void printSwapUsedInfo( const char *cmd ) {
if( Dirty )
updateMemory();
fprintf(CurrentClient, "Used Swap\t0\t%ld\tKB\n", totalswap );
}
void printSwapUsed( const char *cmd ) {
if( Dirty )
updateMemory();
fprintf(CurrentClient, "%ld\n", totalswap - freeswap );
}
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