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Member "xosview-1.23/gnu/pagemeter.cc" (11 Jul 2020, 2277 Bytes) of package /linux/misc/xosview-1.23.tar.gz:


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    1 //
    2 //  Copyright (c) 1996, 2004 by Massimiliano Ghilardi ( ghilardi@cibs.sns.it )
    3 //  2007 by Samuel Thibault ( samuel.thibault@ens-lyon.org )
    4 //
    5 //  This file may be distributed under terms of the GPL
    6 //
    7 
    8 #include "pagemeter.h"
    9 #include "xosview.h"
   10 #include <fstream>
   11 #include <stdlib.h>
   12 #include <sys/types.h>
   13 #include <sys/stat.h>
   14 #include <unistd.h>
   15 #include <error.h>
   16 
   17 extern "C" {
   18 #include <mach/mach_traps.h>
   19 #include <mach/mach_interface.h>
   20 }
   21 
   22 PageMeter::PageMeter( XOSView *parent, float max )
   23   : FieldMeterGraph( parent, 3, "PAGE", "IN/OUT/IDLE" ) {
   24   for ( int i = 0 ; i < 2 ; i++ )
   25     for ( int j = 0 ; j < 2 ; j++ )
   26       pageinfo_[j][i] = 0;
   27 
   28   maxspeed_ = max;
   29   pageindex_ = 0;
   30 }
   31 
   32 PageMeter::~PageMeter( void ){
   33 }
   34 
   35 void PageMeter::checkResources( void ){
   36   FieldMeterGraph::checkResources();
   37 
   38   setfieldcolor( 0, parent_->getResource( "pageInColor" ) );
   39   setfieldcolor( 1, parent_->getResource( "pageOutColor" ) );
   40   setfieldcolor( 2, parent_->getResource( "pageIdleColor" ) );
   41   priority_ = atoi (parent_->getResource( "pagePriority" ) );
   42   maxspeed_ *= priority_ / 10.0;
   43   dodecay_ = parent_->isResourceTrue( "pageDecay" );
   44   useGraph_ = parent_->isResourceTrue( "pageGraph" );
   45   SetUsedFormat (parent_->getResource("pageUsedFormat"));
   46 }
   47 
   48 void PageMeter::checkevent( void ){
   49   getpageinfo();
   50   drawfields();
   51 }
   52 
   53 void PageMeter::updateinfo(void)
   54     {
   55     int oldindex = (pageindex_+1)%2;
   56     for ( int i = 0; i < 2; i++ )
   57         {
   58         if ( pageinfo_[oldindex][i] == 0 )
   59             pageinfo_[oldindex][i] = pageinfo_[pageindex_][i];
   60 
   61         fields_[i] = pageinfo_[pageindex_][i] - pageinfo_[oldindex][i];
   62         total_ += fields_[i];
   63         }
   64 
   65     if ( total_ > maxspeed_ )
   66         fields_[2] = 0.0;
   67     else
   68         {
   69         fields_[2] = maxspeed_ - total_;
   70         total_ = maxspeed_;
   71         }
   72 
   73     setUsed (total_ - fields_[2], maxspeed_);
   74     pageindex_ = (pageindex_ + 1) % 2;
   75     }
   76 
   77 void PageMeter::getpageinfo(void) {
   78   struct vm_statistics vmstats;
   79 
   80   total_ = 0;
   81   kern_return_t err;
   82 
   83   err = vm_statistics (mach_task_self(), &vmstats);
   84   if (err) {
   85     error (0, err, "vm_statistics");
   86     parent_->done(1);
   87     return;
   88   }
   89 
   90   pageinfo_[pageindex_][0] = vmstats.pageins;
   91   pageinfo_[pageindex_][1] = vmstats.pageouts;
   92 
   93   updateinfo();
   94 }