netwerk/cache/nsCacheMetaData.h
author Mike Hommey <mh+mozilla@glandium.org>
Thu, 19 Feb 2015 13:51:06 +0900
changeset 266551 b5d54a547bdca5d76cb338d430829caaeadeb2aa
parent 124574 5c2f1dfa1f67a38631ff62bbe4ae658a36235649
child 416428 6a629adbb62a299d7208373d1c6f375149d2afdb
permissions -rw-r--r--
Bug 1138293 - Use malloc/free/realloc/calloc instead of moz_malloc/moz_free/moz_realloc/moz_calloc. r=njn The distinction between moz_malloc/moz_free and malloc/free is not interesting. We are inconsistent in our use of one or the other, and I wouldn't be surprised if we are mixing them anyways.

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef _nsCacheMetaData_h_
#define _nsCacheMetaData_h_

#include "nspr.h"
#include "nscore.h"

class nsICacheMetaDataVisitor;

class nsCacheMetaData {
public:
    nsCacheMetaData() : mBuffer(nullptr), mBufferSize(0), mMetaSize(0) { }

    ~nsCacheMetaData() {
        mBufferSize = mMetaSize = 0;  
        free(mBuffer);
        mBuffer = nullptr;
    }

    const char *  GetElement(const char * key);

    nsresult      SetElement(const char * key, const char * value);

    uint32_t      Size(void) { return mMetaSize; }

    nsresult      FlattenMetaData(char * buffer, uint32_t bufSize);

    nsresult      UnflattenMetaData(const char * buffer, uint32_t bufSize);

    nsresult      VisitElements(nsICacheMetaDataVisitor * visitor);

private:
    nsresult      EnsureBuffer(uint32_t size);

    char *        mBuffer;
    uint32_t      mBufferSize;
    uint32_t      mMetaSize;
};

#endif // _nsCacheMetaData_h