void ResourceManager::usedARCs(ARC arcs)
{
#ifdef debug_RM
Resources* q = toUse;
cerr << "\nHere are all Resources in ResourceManager::usedARCs, for "
<< theOID << ':' << endl << endl;
while ( q ) {
cerr
<< "From: " << q->benefactor
<< "\nASI: " << q->theARCSlotID
<< "\nARCs: " << q->theARCs
<< "\nState: ";
if ( isLiquid( q->benefactor ) )
cerr << "Liquid\n\n";
else
cerr << "Frozen\n\n";
q = q->next;
}
#endif
if ( freeARCs() >= arcs ) { // Internal check
ARC used;
ARC amount_left = arcs;
#ifdef debug_RM
cerr << "\n\n" << theOID << " is about to use " << arcs << endl;
#endif
do {
do {
if ( lastDrawnFrom )
lastDrawnFrom = lastDrawnFrom->next;
if ( ! lastDrawnFrom )
lastDrawnFrom = toUse;
} while (
! isLiquid( lastDrawnFrom->benefactor ) ||
lastDrawnFrom->theARCs == 0
); // Should not loop
#ifdef debug_RM
cerr
<< "Looking at Resources:\nFrom: " << lastDrawnFrom->benefactor
<< "\nASI: " << lastDrawnFrom->theARCSlotID
<< "\nARCs: " << lastDrawnFrom->theARCs
<< "\nState: ";
if ( isLiquid( lastDrawnFrom->benefactor ) )
cerr << "Liquid\n\n";
else
cerr << "Frozen\n\n";
#endif
if ( lastDrawnFrom->theARCs >= amount_left ) {
used = amount_left;
lastDrawnFrom->theARCs -= used;
amount_left = ZeroARC();
} else {
used = lastDrawnFrom->theARCs;
amount_left -= used;
lastDrawnFrom->theARCs = ZeroARC();
}
// Send ARC update
ARCUpdate update(lastDrawnFrom->benefactor,
lastDrawnFrom->theARCSlotID,
used
);
update.send();
} while ( amount_left > 0 ); // Should not loop
} else {
//@rn Let's not crash just yet, but just warn.
if( ((ComputationManager*)this)->crashed() ) return;
//@db in case of crash let supervisor worry about warnings
Warning msg;
msg << "CM " << theOID << " tried to draw " << arcs
<< " ARCs, when it has only " << freeARCs() << " free; ignoring";
msg.send();
}
}
void ResourceManager::allocate(ResourceManager& recipient, ARC arcs)
{
// Decide which of our Resources to take ARCs from:
ARC give;
ARC amount_left = arcs;
Resources* p = toUse;
#ifdef debug_RM
cerr
<< "\n\n" << theOID << " is about to allocate " << arcs
<< " in " << recipient.theOID << endl;
#endif
while ( p ) {
// Don't fool around yet. Just grab the first ARCs we see.
#ifdef debug_RM
cerr
<< "Looking at Resources:\nFrom: " << p->benefactor
<< "\nASI: " << p->theARCSlotID
<< "\nARCs: " << p->theARCs
<< "\nState: ";
if ( isLiquid( p->benefactor ) ) cerr << "Liquid\n\n";
else cerr << "Frozen\n\n";
#endif
if ( isLiquid( p->benefactor ) ) {
if ( p->theARCs >= amount_left ) {
p->theARCs -= amount_left;
give = amount_left;
amount_left = ZeroARC();
} else {
amount_left -= p->theARCs;
give = p->theARCs;
p->theARCs = ZeroARC();
}
// Note that we do not remove zeroed Resources, since they are
// liable to be added to later.
// Tell the recipient:
recipient.acceptAllocation(p->benefactor, p->theARCSlotID, give);
//@rn In fact, need to distinguish between ARCSlotID-wise
//@rn benefactor, and the freeze-wise benefactor...
if ( amount_left == 0 ) break;
p = p->next;
}
}
if ( amount_left != 0 ) {
Warning msg;
msg << "ResourceManager::allocate tried to transfer too much; ignoring";
msg.send();
}
}