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tailable cursors working

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This commit is contained in:
Dwight
2008-08-13 12:17:18 -04:00
parent 9db9bdba5a
commit edcee6aaa8
11 changed files with 265 additions and 170 deletions
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28
db/clientcursor.cpp
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@@ -101,10 +101,28 @@ void aboutToDelete(const DiskLoc& dl) {
for( vector<ClientCursor*>::iterator i = toAdvance.begin();
i != toAdvance.end(); ++i )
{
(*i)->c->checkLocation();
(*i)->c->advance();
wassert( (*i)->c->currLoc() != dl );
(*i)->updateLocation();
Cursor *c = (*i)->c.get();
DiskLoc tmp1 = c->currLoc();
if( tmp1 != dl ) {
/* this might indicate a failure to call ClientCursor::updateLocation() */
problem() << "warning: cursor loc does not match byLoc position!" << endl;
}
c->checkLocation();
if( c->tailing() ) {
DEV cout << "killing cursor as we would have to advance it and it is tailable" << endl;
delete *i;
continue;
}
c->advance();
DiskLoc newLoc = c->currLoc();
if( newLoc.isNull() ) {
// advanced to end -- delete cursor
delete *i;
}
else {
wassert( newLoc != dl );
(*i)->updateLocation();
}
}
}
@@ -125,7 +143,7 @@ void ClientCursor::updateLocation() {
assert( cursorid );
DiskLoc cl = c->currLoc();
if( lastLoc() == cl ) {
log() << "info: lastloc==curloc " << ns << '\n';
//log() << "info: lastloc==curloc " << ns << '\n';
return;
}
setLastLoc(cl);