//  
//  Initial port performed by Stefan Eilemann (eilemann@gmail.com)
//
#include "memmeter.h"
#include "xosview.h"
#include <unistd.h>
#include <stdlib.h>
#include <invent.h>

MemMeter::MemMeter(XOSView *parent)
    : FieldMeterGraph(parent, 4, "MEM","KERNEL/FS/USER/FREE")
{
    inventory_t *inv;
    _pageSize = getpagesize();
    minfosz = sysmp(MP_SASZ, MPSA_RMINFO);

    total_ = 0;
    setinvent();
    for( inv = getinvent(); inv != NULL; inv = getinvent() )
    {
        if ( inv->inv_class==INV_MEMORY && inv->inv_type == INV_MAIN_MB )
        {
            total_ = inv->inv_state*1024/_pageSize*1024;
            break;
        }
    }
    if ( total_==0 ) {
        parent_->done(1);
        return;
    }
}

void MemMeter::checkResources(void)
{
    FieldMeterGraph::checkResources();

    setfieldcolor(0, parent_->getResource("memKernelColor"));
    setfieldcolor(1, parent_->getResource("memCacheColor"));
    setfieldcolor(2, parent_->getResource("memUsedColor"));
    setfieldcolor(3, parent_->getResource("memFreeColor"));
    priority_ = atoi (parent_->getResource("memPriority"));
    dodecay_ = parent_->isResourceTrue("memDecay");
    useGraph_ = parent_->isResourceTrue("memGraph");
    SetUsedFormat(parent_->getResource("memUsedFormat"));
}

MemMeter::~MemMeter(void)
{
}

void MemMeter::checkevent(void)
{
    getmeminfo();
    drawfields();
}

void MemMeter::getmeminfo(void)
{

    sysmp(MP_SAGET, MPSA_RMINFO, (char *) &mp, minfosz);

    fields_[0] = total_ - (mp.availrmem + mp.bufmem);

    fields_[1] = mp.bufmem +
        mp.dchunkpages + mp.dpages +
        mp.chunkpages - mp.dchunkpages;

    fields_[2] = mp.availrmem -
        (mp.freemem + mp.chunkpages + mp.dpages);

    fields_[3] = mp.freemem;

    FieldMeterDecay::setUsed( (fields_[0]+fields_[1]+fields_[2]) * _pageSize,
        total_ * _pageSize);
}