apps/kinfocenter/memory/memory_solaris.cpp

   1 /*
   2  *  memory_solaris.cpp
   3  *
   4  *  Torsten Kasch <tk@Genetik.Uni-Bielefeld.DE>
   5  */
   6
   7 #include <unistd.h>
   8 #include <stdlib.h>
   9 #include <kstat.h>
  10
  11 /* Stop <sys/swap.h> from crapping out on 32-bit architectures. */
  12
  13 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
  14 # undef _FILE_OFFSET_BITS
  15 # define _FILE_OFFSET_BITS 32
  16 #endif
  17
  18 #include <sys/stat.h>
  19 #include <sys/swap.h>
  20 #include <vm/anon.h>
  21
  22 #define PAGETOK(a) (( (t_memsize) sysconf( _SC_PAGESIZE )) *  (t_memsize) a)
  23
  24 void KCMMemory::fetchValues() {
  25
  26         kstat_ctl_t     *kctl;
  27         kstat_t         *ksp;
  28         kstat_named_t   *kdata;
  29
  30         /*
  31          *  get a kstat handle first and update the user's kstat chain
  32          */
  33         if( (kctl = kstat_open()) == NULL )
  34                 return;
  35         while( kstat_chain_update( kctl ) != 0 )
  36                 ;
  37
  38         /*
  39          *  traverse the kstat chain to find the appropriate kstat
  40          */
  41         if( (ksp = kstat_lookup( kctl, "unix", 0, "system_pages" )) == NULL )
  42                 return;
  43
  44         if( kstat_read( kctl, ksp, NULL ) == -1 )
  45                 return;
  46
  47         /*
  48          *  lookup the data
  49          */
  50 #if 0
  51         kdata = (kstat_named_t *) kstat_data_lookup( ksp, "physmem" );
  52         if( kdata != NULL ) {
  53                 memoryInfos[TOTAL_MEM] = PAGETOK(kdata->value.ui32);
  54         }
  55 #endif
  56         memoryInfos[TOTAL_MEM] = PAGETOK(sysconf(_SC_PHYS_PAGES));
  57
  58         kdata = (kstat_named_t *) kstat_data_lookup( ksp, "freemem" );
  59         if( kdata != NULL )
  60                 memoryInfos[FREE_MEM] = PAGETOK(kdata->value.ui32);
  61 #ifdef __GNUC__
  62 #warning "FIXME: memoryInfos[CACHED_MEM]"
  63 #endif
  64         memoryInfos[CACHED_MEM] = NO_MEMORY_INFO; // cached memory in ram
  65
  66         kstat_close( kctl );
  67
  68         /*
  69          *  Swap Info
  70          */
  71
  72         struct anoninfo         am_swap;
  73         long                    swaptotal;
  74         long                    swapfree;
  75         long                    swapused;
  76
  77         swaptotal = swapused = swapfree = 0L;
  78
  79         /*
  80          *  Retrieve overall swap information from anonymous memory structure -
  81          *  which is the same way "swap -s" retrieves it's statistics.
  82          *
  83          *  swapctl(SC_LIST, void *arg) does not return what we are looking for.
  84          */
  85
  86         if (swapctl(SC_AINFO, &am_swap) == -1)
  87                 return;
  88
  89         swaptotal = am_swap.ani_max;
  90         swapused = am_swap.ani_resv;
  91         swapfree = swaptotal - swapused;
  92
  93         memoryInfos[SWAP_MEM]     = PAGETOK(swaptotal);
  94         memoryInfos[FREESWAP_MEM] = PAGETOK(swapfree);
  95 }