Function dfs_pcache_dump

components/dfs/dfs_v2/src/dfs_pcache.c:887–942

* @brief Dump page cache information for debugging purposes * * This function prints detailed information about the page cache, including: * - Total page count and capacity * - File paths and page counts for each address space * - Optional detailed page information (with --dump or --dirty flags) * * @param[in] argc Number of command line arguments * @param[in] argv Command line arguments a

 * @see _dfs_aspace_dump() for the actual page dumping implementation
 */
static int dfs_pcache_dump(int argc, char **argv)
{
    int dump = 0;
    rt_list_t *node;
    struct dfs_aspace *aspace;

    if (argc == 2)
    {
        if (strcmp(argv[1], "--dump") == 0)
        {
            dump = 1;
        }
        else if (strcmp(argv[1], "--dirty") == 0)
        {
            dump = 2;
        }
        else
        {
            rt_kprintf("dfs page cache dump\n");
            rt_kprintf("usage: dfs_cache\n");
            rt_kprintf("       dfs_cache --dump\n");
            rt_kprintf("       dfs_cache --dirty\n");
            return 0;
        }
    }

    dfs_pcache_lock();

    rt_kprintf("total pages count: %d / %d\n", rt_atomic_load(&(__pcache.pages_count)), RT_PAGECACHE_COUNT);

    rt_list_for_each(node, &__pcache.list_active)
    {
        if (node != &__pcache.list_inactive)
        {
            aspace = rt_list_entry(node, struct dfs_aspace, cache_node);

            if (aspace->mnt)
            {
                rt_kprintf("file: %s%s pages: %d\n", aspace->fullpath, aspace->pathname, aspace->pages_count);
            }
            else
            {
                rt_kprintf("unknown type, pages: %d\n", aspace->pages_count);
            }

            if (dump > 0)
            {
                _dfs_aspace_dump(aspace, dump == 2 ? 1 : 0);
            }
        }
    }

    dfs_pcache_unlock();

    return 0;
}
MSH_CMD_EXPORT_ALIAS(dfs_pcache_dump, dfs_cache, dump dfs page cache);