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Code Issues Releases Wiki Activity

(trunk libT) speedups to comparePeerCandidates()

This commit is contained in:
Charles Kerr 2010-06-13 17:17:33 +00:00
parent 8b23681730
commit a33be6c4b8
1 changed files with 9 additions and 9 deletions
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18
libtransmission/peer-mgr.c
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@ -3274,6 +3274,8 @@ struct peer_candidate
int salt;
tr_torrent * tor;
struct peer_atom * atom;
tr_priority_t priority;
tr_bool wasRecentlyStarted;
};
static int
@ -3299,7 +3301,7 @@ torrentWasRecentlyStarted( const tr_torrent * tor )
static int
comparePeerCandidates( const void * va, const void * vb )
{
int i, ai, bi;
int i;
tr_bool af, bf;
const struct peer_candidate * a = va;
const struct peer_candidate * b = vb;
@ -3315,16 +3317,12 @@ comparePeerCandidates( const void * va, const void * vb )
return a->atom->lastConnectionAttemptAt < b->atom->lastConnectionAttemptAt ? -1 : 1;
/* prefer peers belonging to a torrent of a higher priority */
ai = tr_torrentGetPriority( a->tor );
bi = tr_torrentGetPriority( b->tor );
if( ai != bi )
return ai > bi ? -1 : 1;
if( a->priority != b->priority )
return a->priority > b->priority ? -1 : 1;
/* prefer recently-started torrents */
af = torrentWasRecentlyStarted( a->tor );
bf = torrentWasRecentlyStarted( a->tor );
if( af != bf )
return af ? -1 : 1;
if( a->wasRecentlyStarted != b->wasRecentlyStarted )
return a->wasRecentlyStarted ? -1 : 1;
/* prefer peers that we might have a chance of uploading to */
if(( i = compareSeedProbabilities( a->atom->seedProbability, b->atom->seedProbability )))
@ -3396,6 +3394,8 @@ getPeerCandidates( tr_session * session, int * candidateCount )
walk->tor = tor;
walk->atom = atom;
walk->salt = tr_cryptoWeakRandInt( 4096 );
walk->priority = tr_torrentGetPriority( tor );
walk->wasRecentlyStarted = torrentWasRecentlyStarted( tor );
++walk;
}
}