static void
icacheinsert(u8int score[VtScoreSize], IAddr *ia, int state)
{
IEntry *ie;
if((ie = poplast(&icache.free)) == nil && (ie = evictlru()) == nil){
addstat(StatIcacheStall, 1);
while((ie = poplast(&icache.free)) == nil && (ie = evictlru()) == nil){
// Could safely return here if state == IEClean.
// But if state == IEDirty, have to wait to make
// sure we don't lose an index write.
// Let's wait all the time.
flushdcache();
kickicache();
rsleep(&icache.full);
}
addstat(StatIcacheStall, -1);
}
memmove(ie->score, score, VtScoreSize);
ie->state = state;
ie->ia = *ia;
if(state == IEClean){
addstat(StatIcachePrefetch, 1);
pushfirst(&icache.clean, ie);
}else{
addstat(StatIcacheWrite, 1);
assert(state == IEDirty);
icache.ndirty++;
setstat(StatIcacheDirty, icache.ndirty);
delaykickicache();
pushfirst(&icache.dirty, ie);
}
ihashinsert(icache.hash, ie);
}
int
syncindex(Index *ix)
{
Arena *arena;
int i, e, e1, ok;
ok = 0;
for(i = 0; i < ix->narenas; i++){
trace(TraceProc, "syncindex start %d", i);
arena = ix->arenas[i];
e = syncarena(arena, TWID32, 1, 1);
e1 = e;
e1 &= ~(SyncHeader|SyncCIZero|SyncCIErr);
if(e & SyncHeader)
fprint(2, "arena %s: header is out-of-date\n", arena->name);
if(e1){
fprint(2, "arena %s: %x\n", arena->name, e1);
ok = -1;
continue;
}
flushdcache();
if(arena->memstats.clumps == arena->diskstats.clumps)
continue;
fprint(2, "%T %s: indexing %d clumps...\n",
arena->name,
arena->memstats.clumps - arena->diskstats.clumps);
if(syncarenaindex(arena, ix->amap[i].start) < 0){
fprint(2, "arena %s: syncarenaindex: %r\n", arena->name);
ok = -1;
continue;
}
if(wbarena(arena) < 0){
fprint(2, "arena %s: wbarena: %r\n", arena->name);
ok = -1;
continue;
}
flushdcache();
delaykickicache();
}
return ok;
}
