mirror of
https://github.com/mongodb/mongo.git
synced 2024-11-30 09:06:21 +01:00
78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
// storage.cpp
|
|
/*
|
|
* Copyright (C) 2010 10gen 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/>.
|
|
*/
|
|
|
|
|
|
#include "stdafx.h"
|
|
#include "pdfile.h"
|
|
#include "reccache.h"
|
|
#include "rec.h"
|
|
#include "db.h"
|
|
|
|
namespace mongo {
|
|
|
|
void writerThread();
|
|
|
|
#if defined(_RECSTORE)
|
|
static int inited;
|
|
#endif
|
|
|
|
// pick your store for indexes by setting this typedef
|
|
// this doesn't need to be an ifdef, we can make it dynamic
|
|
#if defined(_RECSTORE)
|
|
RecStoreInterface *btreeStore = new CachedBasicRecStore();
|
|
#else
|
|
RecStoreInterface *btreeStore = new MongoMemMapped_RecStore();
|
|
#endif
|
|
|
|
void BasicRecStore::init(const char *fn, unsigned recsize)
|
|
{
|
|
massert( 10394 , "compile packing problem recstore?", sizeof(RecStoreHeader) == 8192);
|
|
filename = fn;
|
|
f.open(fn);
|
|
uassert( 10130 , string("couldn't open file:")+fn, f.is_open() );
|
|
len = f.len();
|
|
if( len == 0 ) {
|
|
log() << "creating recstore file " << fn << '\n';
|
|
h.recsize = recsize;
|
|
len = sizeof(RecStoreHeader);
|
|
f.write(0, (const char *) &h, sizeof(RecStoreHeader));
|
|
}
|
|
else {
|
|
f.read(0, (char *) &h, sizeof(RecStoreHeader));
|
|
massert( 10395 , string("recstore was not closed cleanly: ")+fn, h.cleanShutdown==0);
|
|
massert( 10396 , string("recstore recsize mismatch, file:")+fn, h.recsize == recsize);
|
|
massert( 10397 , string("bad recstore [1], file:")+fn, (h.leof-sizeof(RecStoreHeader)) % recsize == 0);
|
|
if( h.leof > len ) {
|
|
stringstream ss;
|
|
ss << "bad recstore, file:" << fn << " leof:" << h.leof << " len:" << len;
|
|
massert( 10398 , ss.str(), false);
|
|
}
|
|
if( h.cleanShutdown )
|
|
log() << "warning: non-clean shutdown for file " << fn << '\n';
|
|
h.cleanShutdown = 2;
|
|
writeHeader();
|
|
f.fsync();
|
|
}
|
|
#if defined(_RECSTORE)
|
|
if( inited++ == 0 ) {
|
|
boost::thread t(writerThread);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
}
|