path: root/src/H5HFdbg.c

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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 files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
 * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*-------------------------------------------------------------------------
 *
 * Created:		H5HFdbg.c
 *			Feb 24 2006
 *			Quincey Koziol <koziol@ncsa.uiuc.edu>
 *
 * Purpose:		Dump debugging information about a fractal heap
 *
 *-------------------------------------------------------------------------
 */

/****************/
/* Module Setup */
/****************/

#define H5HF_PACKAGE		/*suppress error about including H5HFpkg  */
#define H5HF_DEBUGGING          /* Need access to fractal heap debugging routines */

/***********/
/* Headers */
/***********/
#include "H5private.h"		/* Generic Functions			*/
#include "H5Eprivate.h"		/* Error handling		  	*/
#include "H5FLprivate.h"	/* Free Lists                           */
#include "H5HFpkg.h"		/* Fractal heaps			*/
#include "H5MMprivate.h"	/* Memory management			*/
#include "H5Vprivate.h"		/* Vectors and arrays 			*/

/****************/
/* Local Macros */
/****************/


/******************/
/* Local Typedefs */
/******************/

/* User data for direct block debugging iterator callback */
typedef struct {
    FILE *stream;               /* Stream for output */
    int indent;                 /* Indention amount */
    int fwidth;                 /* Field width mount */
    haddr_t dblock_addr;        /* Direct block's address */
    haddr_t dblock_size;        /* Direct block's size */
    uint8_t *marker;            /* 'Marker' array for free space */
    size_t sect_count;          /* Number of free space sections in block */
    size_t amount_free;         /* Amount of free space in block */
} H5HF_debug_iter_ud1_t;

/* User data for free space section iterator callback */
typedef struct {
    H5FS_t *fspace;             /* Free space manager */
    FILE *stream;               /* Stream for output */
    int indent;                 /* Indention amount */
    int fwidth;                 /* Field width mount */
} H5HF_debug_iter_ud2_t;


/********************/
/* Package Typedefs */
/********************/


/********************/
/* Local Prototypes */
/********************/

static herr_t H5HF_dtable_debug(H5HF_dtable_t *dtable, FILE *stream,
    int indent, int fwidth);


/*********************/
/* Package Variables */
/*********************/


/*****************************/
/* Library Private Variables */
/*****************************/


/*******************/
/* Local Variables */
/*******************/


/*-------------------------------------------------------------------------
 * Function:	H5HF_dtable_debug
 *
 * Purpose:	Prints debugging info about a doubling table
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		koziol@ncsa.uiuc.edu
 *		Feb 28 2006
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5HF_dtable_debug(H5HF_dtable_t *dtable, FILE *stream, int indent, int fwidth)
{
    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HF_dtable_debug)

    /*
     * Check arguments.
     */
    HDassert(dtable);
    HDassert(stream);
    HDassert(indent >= 0);
    HDassert(fwidth >= 0);

    /*
     * Print the values.
     */
    /* Creation parameter values */
    HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
	      "Doubling table width:",
	      dtable->cparam.width);
    HDfprintf(stream, "%*s%-*s %Zu\n", indent, "", fwidth,
	      "Starting block size:",
	      dtable->cparam.start_block_size);
    HDfprintf(stream, "%*s%-*s %Zu\n", indent, "", fwidth,
	      "Max. direct block size:",
	      dtable->cparam.max_direct_size);
    HDfprintf(stream, "%*s%-*s %u (bits)\n", indent, "", fwidth,
	      "Max. index size:",
	      dtable->cparam.max_index);
    HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
	      "Starting # of rows in root indirect block:",
	      dtable->cparam.start_root_rows);

    /* Run-time varying parameter values */
    HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth,
	      "Table's root address:",
	      dtable->table_addr);
    HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
	      "Current # of rows in root indirect block:",
	      dtable->curr_root_rows);

    /* Computed values */
    HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
	      "Max. # of rows in root indirect block:",
	      dtable->max_root_rows);
    HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
	      "Max. # of direct rows in any indirect block:",
	      dtable->max_direct_rows);
    HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
	      "# of bits for IDs in first row:",
	      dtable->first_row_bits);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "# of IDs in first row:",
	      dtable->num_id_first_row);

    FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5HF_dtable_debug() */


/*-------------------------------------------------------------------------
 * Function:	H5HF_hdr_debug
 *
 * Purpose:	Prints debugging info about a fractal heap header.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		koziol@ncsa.uiuc.edu
 *		Feb 24 2006
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5HF_hdr_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr, FILE *stream, int indent, int fwidth)
{
    H5HF_hdr_t	*hdr = NULL;             /* Fractal heap header info */
    herr_t      ret_value = SUCCEED;    /* Return value */

    FUNC_ENTER_NOAPI(H5HF_hdr_debug, FAIL)

    /*
     * Check arguments.
     */
    HDassert(f);
    HDassert(H5F_addr_defined(addr));
    HDassert(stream);
    HDassert(indent >= 0);
    HDassert(fwidth >= 0);

    /*
     * Load the fractal heap header.
     */
    if(NULL == (hdr = H5AC_protect(f, dxpl_id, H5AC_FHEAP_HDR, addr, NULL, NULL, H5AC_READ)))
	HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load fractal heap header")

    /* Print opening message */
    HDfprintf(stream, "%*sFractal Heap Header...\n", indent, "");

    /*
     * Print the values.
     */
    HDfprintf(stream, "%*s%-*s %t\n", indent, "", fwidth,
	      "Objects stored in 'debugging' format:",
	      hdr->debug_objs);
    HDfprintf(stream, "%*s%-*s %t\n", indent, "", fwidth,
	      "'Write once' flag:",
	      hdr->write_once);
    HDfprintf(stream, "%*s%-*s %t\n", indent, "", fwidth,
	      "'Huge' object IDs have wrapped:",
	      hdr->huge_ids_wrapped);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Free space in managed blocks:",
	      hdr->total_man_free);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Managed space data block size:",
	      hdr->man_size);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Total managed space allocated:",
	      hdr->man_alloc_size);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Offset of managed space iterator:",
	      hdr->man_iter_off);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Number of managed objects in heap:",
	      hdr->man_nobjs);
    HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth,
	      "Address of free space manager for managed blocks:",
	      hdr->fs_addr);
    HDfprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
	      "Max. size of managed object:",
	      (unsigned long)hdr->max_man_size);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "'Huge' object space used:",
	      hdr->huge_size);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Number of 'huge' objects in heap:",
	      hdr->huge_nobjs);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "ID of next 'huge' object:",
	      hdr->huge_next_id);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Address of v2 B-tree for 'huge' objects:",
	      hdr->huge_bt2_addr);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "'Tiny' object space used:",
	      hdr->tiny_size);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Number of 'tiny' objects in heap:",
	      hdr->tiny_nobjs);

    HDfprintf(stream, "%*sManaged Objects Doubling-Table Info...\n", indent, "");
    H5HF_dtable_debug(&hdr->man_dtable, stream, indent + 3, MAX(0, fwidth - 3));

    /* Print information about I/O filters */
    if(hdr->filter_len > 0) {
        HDfprintf(stream, "%*sI/O filter Info...\n", indent, "");
        H5O_debug_id(H5O_PLINE_ID, f, dxpl_id, &(hdr->pline), stream,
                             indent + 3, MAX(0, fwidth - 3));
    } /* end if */

done:
    if(hdr && H5AC_unprotect(f, dxpl_id, H5AC_FHEAP_HDR, addr, hdr, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release fractal heap header")

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HF_hdr_debug() */


/*-------------------------------------------------------------------------
 * Function:	H5HF_dblock_debug_cb
 *
 * Purpose:	Detect free space within a direct block
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		koziol@ncsa.uiuc.edu
 *		May 13 2006
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5HF_dblock_debug_cb(const H5FS_section_info_t *_sect, void *_udata)
{
    const H5HF_free_section_t *sect = (const H5HF_free_section_t *)_sect;       /* Section to dump info */
    H5HF_debug_iter_ud1_t *udata = (H5HF_debug_iter_ud1_t *)_udata;         /* User data for callbacks */
    haddr_t sect_start, sect_end;       /* Section's beginning and ending offsets */
    haddr_t dblock_start, dblock_end;   /* Direct block's beginning and ending offsets */

    FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5HF_dblock_debug_cb)

    /*
     * Check arguments.
     */
    HDassert(sect);
    HDassert(udata);

    /* Set up some local variables, for convenience */
    sect_start = sect->sect_info.addr;
    sect_end = (sect->sect_info.addr + sect->sect_info.size) - 1;
    HDassert(sect_end >= sect_start);
    dblock_start = udata->dblock_addr;
    dblock_end = (udata->dblock_addr + udata->dblock_size) - 1;
    HDassert(dblock_end >= dblock_start);

    /* Check for overlap between free space section & direct block */
    if((sect_start <= dblock_end && sect_end >=dblock_start) || /* section within or overlaps w/beginning of direct block*/
            (sect_start <= dblock_end && sect_end >=dblock_end)) {  /* section overlaps w/end of direct block */
        char temp_str[32];      /* Temporary string for formatting */
        size_t start, end;      /* Start & end of the overlapping area */
        size_t len;             /* Length of the overlapping area */
        size_t overlap;         /* Track any overlaps */
        unsigned u;             /* Local index variable */

        /* Calculate the starting & ending */
        if(sect_start < dblock_start)
            start = 0;
        else
            start = sect_start - dblock_start;
        if(sect_end > dblock_end)
            end = udata->dblock_size;
        else
            end = (sect_end - dblock_start) + 1;

        /* Calculate the length */
        len = end - start;

        sprintf(temp_str, "Section #%u:", (unsigned)udata->sect_count);
	HDfprintf(udata->stream, "%*s%-*s %8Zu, %8Zu\n", udata->indent + 3, "", MAX(0, udata->fwidth - 9),
		temp_str,
		start, len);
        udata->sect_count++;

        /* Mark this node's free space & check for overlaps w/other sections */
        overlap = 0;
        for(u = start; u < end; u++) {
            if(udata->marker[u])
                overlap++;
            udata->marker[u] = 1;
        } /* end for */

        /* Flag overlaps */
        if (overlap)
            fprintf(udata->stream, "***THAT FREE BLOCK OVERLAPPED A PREVIOUS ONE!\n");
        else
            udata->amount_free += len;
    } /* end if */

    FUNC_LEAVE_NOAPI(SUCCEED)
} /* end H5HF_dblock_debug_cb() */


/*-------------------------------------------------------------------------
 * Function:	H5HF_dblock_debug
 *
 * Purpose:	Prints debugging info about a fractal heap direct block.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		koziol@ncsa.uiuc.edu
 *		Feb 28 2006
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5HF_dblock_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr, FILE *stream,
    int indent, int fwidth, haddr_t hdr_addr, size_t block_size)
{
    H5HF_hdr_t	*hdr = NULL;            /* Fractal heap header info */
    H5HF_direct_t *dblock = NULL;       /* Fractal heap direct block info */
    H5HF_debug_iter_ud1_t udata;        /* User data for callbacks */
    size_t	blk_prefix_size;        /* Size of prefix for block */
    size_t	amount_free;            /* Amount of free space in block */
    uint8_t	*marker = NULL;         /* Track free space for block */
    herr_t      ret_value = SUCCEED;    /* Return value */

    FUNC_ENTER_NOAPI(H5HF_dblock_debug, FAIL)

    /*
     * Check arguments.
     */
    HDassert(f);
    HDassert(H5F_addr_defined(addr));
    HDassert(stream);
    HDassert(indent >= 0);
    HDassert(fwidth >= 0);
    HDassert(H5F_addr_defined(hdr_addr));
    HDassert(block_size > 0);

    /*
     * Load the fractal heap header.
     */
    if(NULL == (hdr = H5AC_protect(f, dxpl_id, H5AC_FHEAP_HDR, hdr_addr, NULL, NULL, H5AC_READ)))
	HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load fractal heap header")

    /*
     * Load the heap direct block
     */
    if(NULL == (dblock = H5HF_man_dblock_protect(hdr, dxpl_id, addr, block_size, NULL, 0, H5AC_READ)))
	HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load fractal heap direct block")

    /* Print opening message */
    HDfprintf(stream, "%*sFractal Heap Direct Block...\n", indent, "");

    /*
     * Print the values.
     */
    HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth,
	      "Address of fractal heap that owns this block:",
	      hdr->heap_addr);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Offset of direct block in heap:",
	      dblock->block_off);
    blk_prefix_size = H5HF_MAN_ABS_DIRECT_OVERHEAD(hdr);
    HDfprintf(stream, "%*s%-*s %Zu\n", indent, "", fwidth,
	      "Size of block header:",
              blk_prefix_size);
    HDfprintf(stream, "%*s%-*s %Zu\n", indent, "", fwidth,
	      "Size of block offsets:",
	      dblock->blk_off_size);

    /* Allocate space for the free space markers */
    if(NULL == (marker = H5MM_calloc(dblock->size)))
	HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed")

    /* Initialize the free space information for the heap */
    if(H5HF_space_start(hdr, dxpl_id) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "can't initialize heap free space")

    /* Prepare user data for section iteration callback */
    udata.stream = stream;
    udata.indent = indent;
    udata.fwidth = fwidth;
    udata.dblock_addr = dblock->block_off;
    udata.dblock_size = block_size;
    udata.marker = marker;
    udata.sect_count = 0;
    udata.amount_free = 0;

    /* Print header */
    HDfprintf(stream, "%*sFree Blocks (offset, size):\n", indent, "");

    /* Iterate over the free space sections, to detect overlaps with this block */
    if(H5FS_sect_iterate(f, dxpl_id, hdr->fspace, H5HF_dblock_debug_cb, &udata) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_BADITER, FAIL, "can't iterate over heap's free space")

    /* Close the free space information */
    if(H5HF_space_close(hdr, dxpl_id) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_CANTRELEASE, FAIL, "can't release free space info")

    /* Keep the amount of space free */
    amount_free = udata.amount_free;

    /* Check for no free space */
    if(amount_free == 0)
        HDfprintf(stream, "%*s<none>\n", indent + 3, "");

    HDfprintf(stream, "%*s%-*s %.2f%%\n", indent, "", fwidth,
            "Percent of available space for data used:",
            (100.0 * (double)((dblock->size - blk_prefix_size) - amount_free) / (double)(dblock->size - blk_prefix_size)));

    /*
     * Print the data in a VMS-style octal dump.
     */
    H5_buffer_dump(stream, indent, dblock->blk, marker, (size_t)0, dblock->size);

done:
    if(dblock && H5AC_unprotect(f, dxpl_id, H5AC_FHEAP_DBLOCK, addr, dblock, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release fractal heap direct block")
    if(hdr && H5AC_unprotect(f, dxpl_id, H5AC_FHEAP_HDR, hdr_addr, hdr, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release fractal heap header")
    H5MM_xfree(marker);

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HF_dblock_debug() */


/*-------------------------------------------------------------------------
 * Function:	H5HF_iblock_debug
 *
 * Purpose:	Prints debugging info about a fractal heap indirect block.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		koziol@ncsa.uiuc.edu
 *		Mar  7 2006
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5HF_iblock_debug(H5F_t *f, hid_t dxpl_id, haddr_t addr, FILE *stream,
    int indent, int fwidth, haddr_t hdr_addr, unsigned nrows)
{
    H5HF_hdr_t	*hdr = NULL;            /* Fractal heap header info */
    H5HF_indirect_t *iblock = NULL;     /* Fractal heap direct block info */
    char temp_str[64];                  /* Temporary string, for formatting */
    size_t	u, v;                   /* Local index variable */
    herr_t      ret_value = SUCCEED;    /* Return value */

    FUNC_ENTER_NOAPI(H5HF_iblock_debug, FAIL)

    /*
     * Check arguments.
     */
    HDassert(f);
    HDassert(H5F_addr_defined(addr));
    HDassert(stream);
    HDassert(indent >= 0);
    HDassert(fwidth >= 0);
    HDassert(H5F_addr_defined(hdr_addr));
    HDassert(nrows > 0);

    /*
     * Load the fractal heap header.
     */
    if(NULL == (hdr = H5AC_protect(f, dxpl_id, H5AC_FHEAP_HDR, hdr_addr, NULL, NULL, H5AC_READ)))
	HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load fractal heap header")

    /*
     * Load the heap direct block
     */
    if(NULL == (iblock = H5HF_man_iblock_protect(hdr, dxpl_id, addr, nrows, NULL, 0, H5AC_READ)))
	HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load fractal heap indirect block")

    /* Print opening message */
    HDfprintf(stream, "%*sFractal Heap Indirect Block...\n", indent, "");

    /*
     * Print the values.
     */
    HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth,
	      "Address of fractal heap that owns this block:",
	      hdr->heap_addr);
    HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth,
	      "Offset of indirect block in heap:",
	      iblock->block_off);
    HDfprintf(stream, "%*s%-*s %Zu\n", indent, "", fwidth,
	      "Size of indirect block:",
	      iblock->size);
    HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
	      "Current # of rows:",
	      iblock->nrows);
    HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
	      "Max. # of rows:",
	      iblock->max_rows);
    HDfprintf(stream, "%*s%-*s %u\n", indent, "", fwidth,
	      "Max direct block rows:",
	      hdr->man_dtable.max_direct_rows);

    /* Print the entry tables */
    HDfprintf(stream, "%*sDirect Block Entries: (address)\n", indent, "");
    for(u = 0; u < hdr->man_dtable.max_direct_rows && u < iblock->nrows; u++) {
        sprintf(temp_str, "Row #%u: (block size: %lu)", (unsigned)u, (unsigned long)hdr->man_dtable.row_block_size[u]);
        HDfprintf(stream, "%*s%-*s\n", indent + 3, "", MAX(0, fwidth - 3),
                temp_str);
        for(v = 0; v < hdr->man_dtable.cparam.width; v++) {
            size_t off = (u * hdr->man_dtable.cparam.width) + v;

            sprintf(temp_str, "Col #%u:", (unsigned)v);
            HDfprintf(stream, "%*s%-*s %9a\n", indent + 6, "", MAX(0, fwidth - 6),
                    temp_str,
                    iblock->ents[off].addr);
        } /* end for */
    } /* end for */
    HDfprintf(stream, "%*sIndirect Block Entries:\n", indent, "");
    if(iblock->nrows > hdr->man_dtable.max_direct_rows) {
        unsigned    first_row_bits;         /* Number of bits used bit addresses in first row */
        unsigned    num_indirect_rows;      /* Number of rows of blocks in each indirect block */

        first_row_bits = H5V_log2_of2((uint32_t)hdr->man_dtable.cparam.start_block_size) +
                            H5V_log2_of2(hdr->man_dtable.cparam.width);
        for(u = hdr->man_dtable.max_direct_rows; u < iblock->nrows; u++) {
            num_indirect_rows = (H5V_log2_gen(hdr->man_dtable.row_block_size[u]) - first_row_bits) + 1;
            sprintf(temp_str, "Row #%u: (# of rows: %u)", (unsigned)u, num_indirect_rows);
            HDfprintf(stream, "%*s%-*s\n", indent + 3, "", MAX(0, fwidth - 3),
                    temp_str);
            for(v = 0; v < hdr->man_dtable.cparam.width; v++) {
                size_t off = (u * hdr->man_dtable.cparam.width) + v;

                sprintf(temp_str, "Col #%u:", (unsigned)v);
                HDfprintf(stream, "%*s%-*s %9a\n", indent + 6, "", MAX(0, fwidth - 6),
                        temp_str,
                        iblock->ents[off].addr);
            } /* end for */
        } /* end for */
    } /* end if */
    else
        HDfprintf(stream, "%*s%-*s\n", indent + 3, "", MAX(0, fwidth - 3),
                  "<none>");

done:
    if(iblock && H5AC_unprotect(f, dxpl_id, H5AC_FHEAP_IBLOCK, addr, iblock, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release fractal heap direct block")
    if(hdr && H5AC_unprotect(f, dxpl_id, H5AC_FHEAP_HDR, hdr_addr, hdr, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release fractal heap header")

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HF_iblock_debug() */


/*-------------------------------------------------------------------------
 * Function:	H5HF_sects_debug_cb
 *
 * Purpose:	Prints debugging info about a free space section for a fractal heap.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		koziol@ncsa.uiuc.edu
 *		May 13 2006
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5HF_sects_debug_cb(const H5FS_section_info_t *_sect, void *_udata)
{
    const H5HF_free_section_t *sect = (const H5HF_free_section_t *)_sect;       /* Section to dump info */
    H5HF_debug_iter_ud2_t *udata = (H5HF_debug_iter_ud2_t *)_udata;         /* User data for callbacks */
    herr_t      ret_value = SUCCEED;    /* Return value */

    FUNC_ENTER_NOAPI_NOINIT(H5HF_sects_debug_cb)

    /*
     * Check arguments.
     */
    HDassert(sect);
    HDassert(udata);

    /* Print generic section information */
    HDfprintf(udata->stream, "%*s%-*s %s\n", udata->indent, "", udata->fwidth,
	      "Section type:",
	      (sect->sect_info.type == H5HF_FSPACE_SECT_SINGLE ? "single" :
                  (sect->sect_info.type == H5HF_FSPACE_SECT_FIRST_ROW ? "first row" :
                  (sect->sect_info.type == H5HF_FSPACE_SECT_NORMAL_ROW ? "normal row" : "unknown"))));
    HDfprintf(udata->stream, "%*s%-*s %a\n", udata->indent, "", udata->fwidth,
	      "Section address:",
	      sect->sect_info.addr);
    HDfprintf(udata->stream, "%*s%-*s %Hu\n", udata->indent, "", udata->fwidth,
	      "Section size:",
	      sect->sect_info.size);
#ifdef QAK
    HDfprintf(udata->stream, "%*s%-*s %s\n", udata->indent, "", udata->fwidth,
	      "Section state:",
	      (sect->sect_info.state == H5FS_SECT_LIVE ? "live" : "serialized"));
#endif /* QAK */

    /* Dump section-specific debugging information */
    if(H5FS_sect_debug(udata->fspace, _sect, udata->stream, udata->indent + 3, MAX(0, udata->fwidth - 3)) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_BADITER, FAIL, "can't dump section's debugging info")

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HF_sects_debug_cb() */


/*-------------------------------------------------------------------------
 * Function:	H5HF_sects_debug
 *
 * Purpose:	Prints debugging info about free space sections for a fractal heap.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		koziol@ncsa.uiuc.edu
 *		May  9 2006
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5HF_sects_debug(H5F_t *f, hid_t dxpl_id, haddr_t fh_addr,
    FILE *stream, int indent, int fwidth)
{
    H5HF_hdr_t	*hdr = NULL;            /* Fractal heap header info */
    H5HF_debug_iter_ud2_t udata;        /* User data for callbacks */
    herr_t      ret_value = SUCCEED;    /* Return value */

    FUNC_ENTER_NOAPI(H5HF_sects_debug, FAIL)

    /*
     * Check arguments.
     */
    HDassert(f);
    HDassert(H5F_addr_defined(fh_addr));
    HDassert(stream);
    HDassert(indent >= 0);
    HDassert(fwidth >= 0);

    /*
     * Load the fractal heap header.
     */
    if(NULL == (hdr = H5AC_protect(f, dxpl_id, H5AC_FHEAP_HDR, fh_addr, NULL, NULL, H5AC_READ)))
	HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load fractal heap header")

    /* Initialize the free space information for the heap */
    if(H5HF_space_start(hdr, dxpl_id) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "can't initialize heap free space")

    /* Prepare user data for section iteration callback */
    udata.fspace = hdr->fspace;
    udata.stream = stream;
    udata.indent = indent;
    udata.fwidth = fwidth;

    /* Iterate over all the free space sections */
    if(H5FS_sect_iterate(f, dxpl_id, hdr->fspace, H5HF_sects_debug_cb, &udata) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_BADITER, FAIL, "can't iterate over heap's free space")

    /* Close the free space information */
    if(H5HF_space_close(hdr, dxpl_id) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_CANTRELEASE, FAIL, "can't release free space info")

done:
    if(hdr && H5AC_unprotect(f, dxpl_id, H5AC_FHEAP_HDR, fh_addr, hdr, H5AC__NO_FLAGS_SET) < 0)
        HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release fractal heap header")

    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HF_sects_debug() */