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// namespace_details_rsv1_metadata.cpp
/**
* Copyright (C) 2014 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/db/storage/mmap_v1/catalog/namespace_details_rsv1_metadata.h"
#include "mongo/db/operation_context.h"
namespace mongo {
using std::unique_ptr;
using std::numeric_limits;
BOOST_STATIC_ASSERT(RecordStoreV1Base::Buckets
== NamespaceDetails::SmallBuckets + NamespaceDetails::LargeBuckets);
NamespaceDetailsRSV1MetaData::NamespaceDetailsRSV1MetaData( StringData ns,
NamespaceDetails* details )
: _ns( ns.toString() ),
_details( details ) {
}
const DiskLoc& NamespaceDetailsRSV1MetaData::capExtent() const {
return _details->capExtent;
}
void NamespaceDetailsRSV1MetaData::setCapExtent( OperationContext* txn, const DiskLoc& loc ) {
*txn->recoveryUnit()->writing( &_details->capExtent ) = loc;
}
const DiskLoc& NamespaceDetailsRSV1MetaData::capFirstNewRecord() const {
return _details->capFirstNewRecord;
}
void NamespaceDetailsRSV1MetaData::setCapFirstNewRecord( OperationContext* txn,
const DiskLoc& loc ) {
*txn->recoveryUnit()->writing( &_details->capFirstNewRecord ) = loc;
}
bool NamespaceDetailsRSV1MetaData::capLooped() const {
return _details->capFirstNewRecord.isValid();
}
long long NamespaceDetailsRSV1MetaData::dataSize() const {
return _details->stats.datasize;
}
long long NamespaceDetailsRSV1MetaData::numRecords() const {
return _details->stats.nrecords;
}
void NamespaceDetailsRSV1MetaData::incrementStats( OperationContext* txn,
long long dataSizeIncrement,
long long numRecordsIncrement ) {
// durability todo : this could be a bit annoying / slow to record constantly
NamespaceDetails::Stats* s = txn->recoveryUnit()->writing( &_details->stats );
s->datasize += dataSizeIncrement;
s->nrecords += numRecordsIncrement;
}
void NamespaceDetailsRSV1MetaData::setStats( OperationContext* txn,
long long dataSize,
long long numRecords ) {
NamespaceDetails::Stats* s = txn->recoveryUnit()->writing( &_details->stats );
s->datasize = dataSize;
s->nrecords = numRecords;
}
DiskLoc NamespaceDetailsRSV1MetaData::deletedListEntry( int bucket ) const {
invariant(bucket >= 0 && bucket < RecordStoreV1Base::Buckets);
const DiskLoc head = (bucket < NamespaceDetails::SmallBuckets)
? _details->deletedListSmall[bucket]
: _details->deletedListLarge[bucket - NamespaceDetails::SmallBuckets];
if (head == DiskLoc(0,0)) {
// This will happen the first time we use a "large" bucket since they were previously
// zero-initialized.
return DiskLoc();
}
return head;
}
void NamespaceDetailsRSV1MetaData::setDeletedListEntry( OperationContext* txn,
int bucket,
const DiskLoc& loc ) {
DiskLoc* head = (bucket < NamespaceDetails::SmallBuckets)
? &_details->deletedListSmall[bucket]
: &_details->deletedListLarge[bucket - NamespaceDetails::SmallBuckets];
*txn->recoveryUnit()->writing( head ) = loc;
}
DiskLoc NamespaceDetailsRSV1MetaData::deletedListLegacyGrabBag() const {
return _details->deletedListLegacyGrabBag;
}
void NamespaceDetailsRSV1MetaData::setDeletedListLegacyGrabBag(OperationContext* txn,
const DiskLoc& loc) {
*txn->recoveryUnit()->writing(&_details->deletedListLegacyGrabBag) = loc;
}
void NamespaceDetailsRSV1MetaData::orphanDeletedList( OperationContext* txn ) {
for( int i = 0; i < RecordStoreV1Base::Buckets; i++ ) {
setDeletedListEntry( txn, i, DiskLoc() );
}
setDeletedListLegacyGrabBag(txn, DiskLoc());
}
const DiskLoc& NamespaceDetailsRSV1MetaData::firstExtent( OperationContext* txn ) const {
return _details->firstExtent;
}
void NamespaceDetailsRSV1MetaData::setFirstExtent( OperationContext* txn, const DiskLoc& loc ) {
*txn->recoveryUnit()->writing( &_details->firstExtent ) = loc;
}
const DiskLoc& NamespaceDetailsRSV1MetaData::lastExtent( OperationContext* txn ) const {
return _details->lastExtent;
}
void NamespaceDetailsRSV1MetaData::setLastExtent( OperationContext* txn, const DiskLoc& loc ) {
*txn->recoveryUnit()->writing( &_details->lastExtent ) = loc;
}
bool NamespaceDetailsRSV1MetaData::isCapped() const {
return _details->isCapped;
}
bool NamespaceDetailsRSV1MetaData::isUserFlagSet( int flag ) const {
return _details->userFlags & flag;
}
int NamespaceDetailsRSV1MetaData::userFlags() const {
return _details->userFlags;
}
bool NamespaceDetailsRSV1MetaData::setUserFlag( OperationContext* txn, int flag ) {
if ( ( _details->userFlags & flag ) == flag )
return false;
txn->recoveryUnit()->writingInt( _details->userFlags) |= flag;
return true;
}
bool NamespaceDetailsRSV1MetaData::clearUserFlag( OperationContext* txn, int flag ) {
if ( ( _details->userFlags & flag ) == 0 )
return false;
txn->recoveryUnit()->writingInt(_details->userFlags) &= ~flag;
return true;
}
bool NamespaceDetailsRSV1MetaData::replaceUserFlags( OperationContext* txn, int flags ) {
if ( _details->userFlags == flags )
return false;
txn->recoveryUnit()->writingInt(_details->userFlags) = flags;
return true;
}
int NamespaceDetailsRSV1MetaData::lastExtentSize( OperationContext* txn ) const {
return _details->lastExtentSize;
}
void NamespaceDetailsRSV1MetaData::setLastExtentSize( OperationContext* txn, int newMax ) {
if ( _details->lastExtentSize == newMax )
return;
txn->recoveryUnit()->writingInt(_details->lastExtentSize) = newMax;
}
long long NamespaceDetailsRSV1MetaData::maxCappedDocs() const {
invariant( _details->isCapped );
if ( _details->maxDocsInCapped == 0x7fffffff )
return numeric_limits<long long>::max();
return _details->maxDocsInCapped;
}
}
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