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82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
// storage.cpp
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/*
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* Copyright (C) 2010 10gen Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "pch.h"
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#include "pdfile.h"
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//#include "reccache.h"
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#include "rec.h"
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#include "db.h"
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namespace mongo {
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// pick your store for indexes by setting this typedef
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// this doesn't need to be an ifdef, we can make it dynamic
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#if defined(_RECSTORE)
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RecStoreInterface *btreeStore = new CachedBasicRecStore();
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#else
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MongoMemMapped_RecStore *btreeStore = new MongoMemMapped_RecStore();
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#endif
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#if 0
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#if defined(_RECSTORE)
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static int inited;
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#endif
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void writerThread();
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void BasicRecStore::init(const char *fn, unsigned recsize)
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{
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massert( 10394 , "compile packing problem recstore?", sizeof(RecStoreHeader) == 8192);
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filename = fn;
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f.open(fn);
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uassert( 10130 , string("couldn't open file:")+fn, f.is_open() );
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len = f.len();
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if( len == 0 ) {
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log() << "creating recstore file " << fn << '\n';
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h.recsize = recsize;
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len = sizeof(RecStoreHeader);
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f.write(0, (const char *) &h, sizeof(RecStoreHeader));
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}
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else {
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f.read(0, (char *) &h, sizeof(RecStoreHeader));
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massert( 10395 , string("recstore was not closed cleanly: ")+fn, h.cleanShutdown==0);
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massert( 10396 , string("recstore recsize mismatch, file:")+fn, h.recsize == recsize);
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massert( 10397 , string("bad recstore [1], file:")+fn, (h.leof-sizeof(RecStoreHeader)) % recsize == 0);
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if( h.leof > len ) {
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stringstream ss;
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ss << "bad recstore, file:" << fn << " leof:" << h.leof << " len:" << len;
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massert( 10398 , ss.str(), false);
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}
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if( h.cleanShutdown )
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log() << "warning: non-clean shutdown for file " << fn << '\n';
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h.cleanShutdown = 2;
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writeHeader();
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f.fsync();
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}
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#if defined(_RECSTORE)
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if( inited++ == 0 ) {
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boost::thread t(writerThread);
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}
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#endif
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}
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#endif
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}
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