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//
// Copyright (c) 1994, 1995, 2006 by Mike Romberg ( mike.romberg@noaa.gov )
//
// This file may be distributed under terms of the GPL
//
#include "intmeter.h"
#include <stdlib.h>
#include <fstream>
#include <string>
#include <iostream>
#include <sstream>
#include <map>
static const char *INTFILE = "/proc/interrupts";
static std::map<const int,int> realintnum;
static const int max = 1024;
IntMeter::IntMeter( XOSView *parent, int cpu )
: BitMeter( parent, "INTS", "", 1, 0, 0 ), _cpu(cpu) {
_irqs = _lastirqs = NULL;
initirqcount();
}
IntMeter::~IntMeter( void ){
if (_irqs)
delete[] _irqs;
if (_lastirqs)
delete[] _lastirqs;
}
void IntMeter::checkevent( void ){
getirqs();
for ( int i = 0 ; i < numBits() ; i++ ){
bits_[i] = ((_irqs[i] - _lastirqs[i]) != 0);
_lastirqs[i] = _irqs[i];
}
BitMeter::checkevent();
}
void IntMeter::checkResources( void ){
BitMeter::checkResources();
onColor_ = parent_->allocColor( parent_->getResource( "intOnColor" ) );
offColor_ = parent_->allocColor( parent_->getResource( "intOffColor" ) );
priority_ = atoi( parent_->getResource( "intPriority" ) );
_separate = parent_->isResourceTrue( "intSeparate" );
}
void IntMeter::getirqs( void ){
std::ifstream intfile( INTFILE );
std::string line;
int intno, idx, i;
unsigned long count, tmp;
char *end = NULL;
if ( !intfile ){
std::cerr <<"Can not open file : " <<INTFILE << std::endl;
exit( 1 );
}
intfile.ignore(max, '\n');
while ( !intfile.eof() ){
std::getline(intfile, line);
if ( line.find_first_of("0123456789") > line.find_first_of(':') )
break; // reached non-numeric interrupts
idx = strtoul(line.c_str(), &end, 10);
if (idx >= max)
break;
intno = realintnum[idx];
if ( intno >= numBits() )
updateirqcount(intno, false);
const char *cur = end + 1;
count = tmp = i = 0;
while (*cur && i++ <= _cpu) {
tmp = strtoul(cur, &end, 10);
count += tmp;
cur = end;
}
_irqs[intno] = ( _separate ? tmp : count );
}
}
/* The highest numbered interrupts, the number of interrupts
* is going to be at least +1 (for int 0) and probably higher
* if interrupts numbered more than this one just aren't active.
* Must call with init = true the first time.
*/
void IntMeter::updateirqcount( int n, bool init ){
int old_bits = numBits();
setNumBits(n + 1);
std::ostringstream os;
os << "0";
if (realintnum.upper_bound(15) == realintnum.end()) // only 16 ints
os << "-15";
else {
int prev = 15, prev2 = 14;
for (std::map<int,int>::const_iterator it = realintnum.upper_bound(15),
end = realintnum.end();
it != end; ++it) {
if ( &*it == &*realintnum.rbegin() ) { // last element
if ( it->first == prev + 1 )
os << "-" ;
else {
if ( prev == prev2 + 1 )
os << "-" << prev;
os << "," ;
}
os << it->first;
}
else {
if ( it->first != prev + 1 ) {
if ( prev == prev2 + 1 )
os << "-" << prev;
os << "," << it->first ;
}
}
prev2 = prev;
prev = it->first;
}
os << std::ends;
}
legend(os.str().c_str());
unsigned long *old_irqs = _irqs, *old_lastirqs = _lastirqs;
_irqs = new unsigned long[n+1];
_lastirqs = new unsigned long[n+1];
/* If we are in init, set it to zero,
* otherwise copy over the old set */
if (init) {
for (int i = 0; i < numBits(); i++)
_irqs[i] = _lastirqs[i] = 0;
}
else {
for (int i = 0; i < old_bits; i++) {
_irqs[i] = old_irqs[i];
_lastirqs[i] = old_lastirqs[i];
}
// zero to the end the irq's that haven't been seen before
for (int i = old_bits; i < numBits(); i++)
_irqs[i] = _lastirqs[i] = 0;
}
if (old_irqs)
delete[] old_irqs;
if (old_lastirqs)
delete[] old_lastirqs;
}
/* Find the highest number of interrupts and call updateirqcount to
* update the number of interrupts listed
*/
void IntMeter::initirqcount( void ){
std::ifstream intfile( INTFILE );
int intno = 0;
int i, idx;
if ( !intfile ){
std::cerr <<"Can not open file : " <<INTFILE << std::endl;
exit( 1 );
}
for (i = 0; i < 16; i++)
realintnum[i] = i;
intfile.ignore(max, '\n');
/* just looking for the highest number interrupt that
* is in use, ignore the rest of the data
*/
idx = 16;
while ( !intfile.eof() ){
intfile >> i;
/* break when reaching non-numeric special interrupts */
if (!intfile)
break;
if (i < 16)
intno = i;
else {
intno = idx;
realintnum[i] = idx++;
}
intfile.ignore(max, '\n');
}
updateirqcount(intno, true);
}
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