void run() {
create();
nsd()->deletedListEntry( 2 ) = nsd()->cappedListOfAllDeletedRecords().drec()->nextDeleted().drec()->nextDeleted();
nsd()->cappedListOfAllDeletedRecords().drec()->nextDeleted().drec()->nextDeleted().writing() = DiskLoc();
nsd()->cappedLastDelRecLastExtent().Null();
NamespaceDetails *d = nsd();
zero( &d->capExtent() );
zero( &d->capFirstNewRecord() );
// this has a side effect of called NamespaceDetails::cappedCheckMigrate
db()->namespaceIndex().details( ns() );
ASSERT( nsd()->firstExtent() == nsd()->capExtent() );
ASSERT( nsd()->capExtent().getOfs() != 0 );
ASSERT( !nsd()->capFirstNewRecord().isValid() );
int nDeleted = 0;
for ( DiskLoc i = nsd()->cappedListOfAllDeletedRecords(); !i.isNull(); i = i.drec()->nextDeleted(), ++nDeleted );
ASSERT_EQUALS( 10, nDeleted );
ASSERT( nsd()->cappedLastDelRecLastExtent().isNull() );
}
DiskLoc CappedRecordStoreV1Iterator::getNextCapped(const DiskLoc& dl) {
invariant(!dl.isNull());
NamespaceDetails* details = _recordStore->_details;
if (CollectionScanParams::FORWARD == _direction) {
// If it's not looped, it's easy.
if (!_recordStore->details()->capLooped()) {
return _getNextRecord( dl );
}
// TODO ELABORATE
// EOF.
if (dl == _getExtent( details->capExtent() )->lastRecord) {
return DiskLoc();
}
DiskLoc ret = nextLoop(dl);
// If we become capFirstNewRecord from same extent, advance to next extent.
if (ret == details->capFirstNewRecord() && ret != _getExtent( details->capExtent() )->firstRecord) {
ret = nextLoop(_getExtent( details->capExtent() )->lastRecord);
}
// If we have just gotten to beginning of capExtent, skip to capFirstNewRecord
if (ret == _getExtent( details->capExtent() )->firstRecord) { ret = details->capFirstNewRecord(); }
return ret;
}
else {
if (!details->capLooped()) { return _getPrevRecord( dl ); }
// TODO ELABORATE
// Last record
if (details->capFirstNewRecord() == _getExtent( details->capExtent() )->firstRecord) {
if (dl == nextLoop(_getExtent( details->capExtent() )->lastRecord)) {
return DiskLoc();
}
}
else {
if (dl == _getExtent( details->capExtent() )->firstRecord) { return DiskLoc(); }
}
DiskLoc ret;
// If we are capFirstNewRecord, advance to prev extent, otherwise just get prev.
if (dl == details->capFirstNewRecord()) {
ret = prevLoop(_getExtent( details->capExtent() )->firstRecord);
}
else {
ret = prevLoop(dl);
}
// If we just became last in cap extent, advance past capFirstNewRecord
// (We know ext(capExtent)->firstRecord != capFirstNewRecord, since would
// have returned DiskLoc() earlier otherwise.)
if (ret == _getExtent( details->capExtent() )->lastRecord) {
ret = _getPrevRecord( details->capFirstNewRecord() );
}
return ret;
}
}
