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/**
* Copyright (C) 2012 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/>.
*
* 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.
*/
/* The idea here is to 'name' memory pointers so that we can do diagnostics.
these diagnostics might involve concurrency or other things. mainly would
be for _DEBUG builds. Experimental we'll see how useful.
*/
#pragma once
#include "mongo/base/string_data.h"
namespace mongo {
namespace memconcept {
/** these are like fancy enums - you can use them as "types" of things
and see if foo.concept == bar.concept.
copyable.
*/
class concept {
public:
concept() { *this = err; }
const char * toString() const { return c; }
static concept err;
static concept something;
static concept database;
static concept other;
static concept memorymappedfile;
static concept nsdetails;
static concept datafileheader;
static concept extent;
static concept record;
static concept deletedrecord;
static concept btreebucket;
private:
const char * c;
concept(const char *);
};
/** file was unmapped or something */
void invalidate(void *p, unsigned len=0);
/** note you can be more than one thing; a datafile header is also the starting pointer
for a file */
void is(void *p, concept c, const StringData& desc = StringData( "", 0 ), unsigned len=0);
#if 1
//#if !defined(_DEBUG)
inline void invalidate(void *p, unsigned len) { }
inline void is(void *p, concept c, const StringData& desc, unsigned) { }
#endif
}
}
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