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- BUGFIX: Fixed possible overflow in ETA calculation

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This commit is contained in:
Christophe Dumez 2007-10-10 19:57:24 +00:00
parent 9bb18e1a07
commit f754e34e35
3 changed files with 14 additions and 7 deletions
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16
src/bittorrent.cpp
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@ -147,7 +147,9 @@ void bittorrent::updateETAs() {
if(listEtas.size() == ETAS_MAX_VALUES) {
listEtas.removeFirst();
}
if(h.download_payload_rate()) {
// XXX: We can still get an overflow if remaining file size is approximately
// 8.38*10^5 TiB (lets assume this can't happen)
if(h.download_payload_rate() > 0.1) {
listEtas << (qlonglong)((h.actual_size()-h.total_wanted_done())/(double)h.download_payload_rate());
ETAstats[hash] = listEtas;
qlonglong moy = 0;
@ -156,12 +158,16 @@ void bittorrent::updateETAs() {
Q_ASSERT(nbETAs);
foreach(val, listEtas) {
moy += (qlonglong)((double)val/(double)nbETAs);
if(moy < 0) break;
Q_ASSERT(moy >= 0);
}
if(moy < 0) {
ETAs[hash] = moy;
} else {
// Speed is too low, we don't want overflow.
if(ETAstats.contains(hash)) {
ETAs.remove(hash);
}
if(ETAs.contains(hash)) {
ETAs.remove(hash);
} else {
ETAs[hash] = moy;
}
}
}