if(NULL == (dblock = H5HF_man_dblock_protect(hdr, dxpl_id, dblock_addr, dblock_size, sec_node->u.single.parent, sec_node->u.single.par_entry, H5AC_WRITE)))
 
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the COPYING file, which can be found at the root of the source code       *
 * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.  *
 * If you do not have access to either file, you may request a copy from     *
 * help@hdfgroup.org.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
 *
 * Created:     H5HFman.c
 *          Feb 24 2006
 *          Quincey Koziol <koziol@ncsa.uiuc.edu>
 *
 * Purpose:     "Managed" object routines for fractal heaps.
 *
 *-------------------------------------------------------------------------
 */
/****************/
/* Module Setup */
/****************/
#define H5HF_PACKAGE        /*suppress error about including H5HFpkg  */
/***********/
/* Headers */
/***********/
#include "H5private.h"      /* Generic Functions            */
#include "H5Eprivate.h"     /* Error handling           */
#include "H5HFpkg.h"        /* Fractal heaps            */
#include "H5MFprivate.h"    /* File memory management       */
#include "H5MMprivate.h"    /* Memory management            */
#include "H5VMprivate.h"        /* Vectors and arrays           */
/****************/
/* Local Macros */
/****************/
/* Macro to check if we can apply all filters in the pipeline.  Use whenever
 * performing a modification operation */
 #define H5HF_MAN_WRITE_CHECK_PLINE(HDR)                                       \
{                                                                              \
    if(!((HDR)->checked_filters)) {                                            \
        if((HDR)->pline.nused)                                                 \
            if(H5Z_can_apply_direct(&((HDR)->pline)) < 0)                      \