pagemeter.cc

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//  
//  Initial port performed by Greg Onufer (exodus@cheers.bungi.com)
//
 
#include "pagemeter.h"
#include <stdlib.h>
#include <sys/sysinfo.h>
 
 
PageMeter::PageMeter(XOSView *parent, kstat_ctl_t *_kc, float max)
    : FieldMeterGraph( parent, 3, "PAGE", "IN/OUT/IDLE")
{
    kc = _kc;
 
    for (int i = 0 ; i < 2 ; i++)
        for (int j = 0 ; j < 2 ; j++)
            pageinfo_[j][i] = 0;
 
    maxspeed_ = max;
    pageindex_ = 0;
    cpustats = KStatList::getList(kc, KStatList::CPU_STAT);
}
 
PageMeter::~PageMeter(void)
{
}
 
void PageMeter::checkResources(void)
{
    FieldMeterGraph::checkResources();
 
    setfieldcolor(0, parent_->getResource("pageInColor"));
    setfieldcolor(1, parent_->getResource("pageOutColor"));
    setfieldcolor(2, parent_->getResource("pageIdleColor"));
    priority_ = atoi(parent_->getResource("pagePriority"));
    maxspeed_ *= priority_ / 10.0;
    dodecay_ = parent_->isResourceTrue("pageDecay");
    useGraph_ = parent_->isResourceTrue("pageGraph");
    SetUsedFormat(parent_->getResource("pageUsedFormat"));
}
 
void PageMeter::checkevent(void)
{
    getpageinfo();
    drawfields();
}
 
void PageMeter::getpageinfo(void)
{
    cpu_stat_t cs;
    total_ = 0;
    pageinfo_[pageindex_][0] = 0; // pgin
    pageinfo_[pageindex_][1] = 0; // pgout
    cpustats->update(kc);
 
    for (unsigned int i = 0; i < cpustats->count(); i++) {
        if (kstat_read(kc, (*cpustats)[i], &cs) == -1)
            continue;
        pageinfo_[pageindex_][0] += cs.cpu_vminfo.pgpgin;
        pageinfo_[pageindex_][1] += cs.cpu_vminfo.pgpgout;
    }
 
    int oldindex = (pageindex_ + 1) % 2;
    for (int i = 0; i < 2; i++) {
        if (pageinfo_[oldindex][i] == 0)
            pageinfo_[oldindex][i] = pageinfo_[pageindex_][i];
 
        fields_[i] = pageinfo_[pageindex_][i] - pageinfo_[oldindex][i];
        total_ += fields_[i];
    }
 
    if (total_ > maxspeed_)
        fields_[2] = 0.0;
    else {
        fields_[2] = maxspeed_ - total_;
        total_ = maxspeed_;
    }
 
    setUsed(total_ - fields_[2], maxspeed_);
    pageindex_ = (pageindex_ + 1) % 2;
}