pool.c

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/**
 * \file
 *
 * \author  Georg Hopp
 *
 * \copyright
 * Copyright © 2012  Georg Hopp
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

// for size_t
#include <sys/types.h>

// for strlen

#include "class.h"
#include "asset.h"
#include "hash.h"

Hash asset_pool = NULL;

static
inline
void
freeAsset(const void * _node)
{
    delete(_node);
}

Asset
assetPoolGet(const char * path, size_t npath)
{
    Asset asset = NULL;

    if (NULL == asset_pool) {
        asset_pool = new(Hash);
    } else {
        asset = hashGet(asset_pool, path, npath);
    }

    if (NULL == asset) {
        asset = new(Asset, path, npath);
        if (NULL != asset) {
            hashAdd(asset_pool, asset);
        }
    } else {
        asset->ref_count++;
    }

    return asset;
}

size_t
assetPoolRelease(Asset asset)
{
    if (asset->ref_count > 1) {
        asset->ref_count--;
        return asset->ref_count;
    }

    if (NULL != asset) {
        Asset found = (Asset)hashDelete(
                asset_pool, asset->fname, asset->nfname);

        if (found == asset) {
            delete(found);
        } else {
            // this should never happen....error log...
        }
    }

    return 0;
}

void
assetPoolCleanup(void)
{
    if (NULL != asset_pool) {
        hashEach(asset_pool, freeAsset);
        delete(asset_pool);
    }
}

// vim: set ts=4 sw=4: