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59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
// rec.h
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#pragma once
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#include "reci.h"
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namespace mongo {
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/* A RecStoreInterface for the normal mongo mem mapped file (MongoDataFile) storage
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*/
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class MongoMemMapped_RecStore : public RecStoreInterface {
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public:
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static char* get(DiskLoc d, unsigned len) { return d.rec()->data; }
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static DiskLoc insert(const char *ns, const void *obuf, int len, bool god) {
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return theDataFileMgr.insert(ns, obuf, len, god);
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}
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};
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/* An in memory RecStoreInterface implementation
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*/
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class InMem_RecStore : public RecStoreInterface {
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enum { INMEMFILE = 0x70000000 };
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public:
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static char* get(DiskLoc d, unsigned len) {
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assert( d.a() == INMEMFILE );
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//return (char *) d.getOfs();
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massert("64 bit not done", false);
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return 0;
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}
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static DiskLoc insert(const char *ns, const void *obuf, int len, bool god) {
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char *p = (char *) malloc(len);
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assert( p );
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memcpy(p, obuf, len);
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int b = (int) p;
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assert( b > 0 );
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return DiskLoc(INMEMFILE, b);
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}
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};
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/* Glue btree to RecStoreInterface
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*/
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// pick your store for indexes by setting this typedef
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typedef MongoMemMapped_RecStore BtreeStore;
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//typedef InMem_RecStore BtreeStore;
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const int BucketSize = 8192;
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inline BtreeBucket* DiskLoc::btree() const {
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assert( fileNo != -1 );
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return (BtreeBucket*) BtreeStore::get(*this, BucketSize);
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}
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}
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