path: root/src/H5HFdbg.c

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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:		H5HFdbg.c
 *			Feb 24 2006
 *			Quincey Koziol
 *
 * Purpose:		Dump debugging information about a fractal heap
 *
 *-------------------------------------------------------------------------
 */

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

#include "H5HFmodule.h"         /* This source code file is part of the H5HF module */
#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 "H5VMprivate.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 */
    hsize_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(const H5HF_dtable_t *dtable, FILE *stream,
    int indent, int fwidth);


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


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


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


/*-------------------------------------------------------------------------
 * Function:	H5HF_id_print
 *
 * Purpose:	Prints a fractal heap ID.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		Aug 20 2015
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5HF_id_print(H5HF_t *fh, const void *_id, FILE *stream, int indent, int fwidth)
{
    const uint8_t *id = (const uint8_t *)_id;   /* Object ID */
    uint8_t id_flags;                   /* Heap ID flag bits */
    hsize_t obj_off;                    /* Offset of object */
    size_t obj_len;                     /* Length of object */
    char id_type;                       /* Character for the type of heap ID */
    herr_t      ret_value = SUCCEED;    /* Return value */

    FUNC_ENTER_NOAPI_NOINIT

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

    /* Get the ID flags */
    id_flags = *id;

    /* Check for correct heap ID version */
    if((id_flags & H5HF_ID_VERS_MASK) != H5HF_ID_VERS_CURR)
        HGOTO_ERROR(H5E_HEAP, H5E_VERSION, FAIL, "incorrect heap ID version")

    /* Check type of object in heap */
    if((id_flags & H5HF_ID_TYPE_MASK) == H5HF_ID_TYPE_MAN) {
        id_type = 'M';
    } /* end if */
    else if((id_flags & H5HF_ID_TYPE_MASK) == H5HF_ID_TYPE_HUGE) {
        id_type = 'H';
    } /* end if */
    else if((id_flags & H5HF_ID_TYPE_MASK) == H5HF_ID_TYPE_TINY) {
        id_type = 'T';
    } /* end if */
    else {
HDfprintf(stderr, "%s: Heap ID type not supported yet!\n", FUNC);
HGOTO_ERROR(H5E_HEAP, H5E_UNSUPPORTED, FAIL, "heap ID type not supported yet")
    } /* end else */

    /* Get the length of the heap object */
    if(H5HF_get_obj_len(fh, id, &obj_len) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_CANTGET, FAIL, "can't retrieve heap ID length")

    /* Get the offset of the heap object */
    if(H5HF_get_obj_off(fh, id, &obj_off) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_CANTGET, FAIL, "can't retrieve heap ID length")

    /* Display the heap ID */
    HDfprintf(stream, "%*s%-*s (%c, %Hu, %Zu)\n", indent, "", fwidth,
	      "Heap ID info: (type, offset, length)",
              id_type, obj_off, obj_len);

done:
    FUNC_LEAVE_NOAPI(ret_value)
} /* end H5HF_id_print() */


/*-------------------------------------------------------------------------
 * Function:	H5HF__dtable_debug
 *
 * Purpose:	Prints debugging info about a doubling table
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		Feb 28 2006
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5HF__dtable_debug(const H5HF_dtable_t *dtable, FILE *stream, int indent, int fwidth)
{
    FUNC_ENTER_STATIC_NOERR

    /*
     * 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_print
 *
 * Purpose:	Prints info about a fractal heap header.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		Feb 23 2012
 *
 *-------------------------------------------------------------------------
 */
void
H5HF_hdr_print(const H5HF_hdr_t *hdr, hbool_t dump_internal, FILE *stream, int indent, int fwidth)
{
    FUNC_ENTER_NOAPI_NOINIT_NOERR

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

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

    /*
     * Print the values.
     */
    HDfprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
	      "Heap is:",
	      hdr->man_dtable.curr_root_rows > 0 ? "Indirect" : "Direct");
    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 %a\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, "");
        if(hdr->man_dtable.curr_root_rows == 0) {
            HDfprintf(stream, "%*s%-*s %Zu\n", indent + 3, "", MAX(0, fwidth - 3),
                      "Compressed size of root direct block:",
                      hdr->pline_root_direct_size);
            HDfprintf(stream, "%*s%-*s %x\n", indent + 3, "", MAX(0, fwidth - 3),
                      "Filter mask for root direct block:",
                      hdr->pline_root_direct_filter_mask);
        } /* end if */
        H5O_debug_id(H5O_PLINE_ID, hdr->f, &(hdr->pline), stream, indent + 3, MAX(0, fwidth - 3));
    } /* end if */

    /* Print internal (runtime) information, if requested */
    if(dump_internal) {
        HDfprintf(stream, "%*sFractal Heap Header Internal Information:\n", indent, "");

        /* Dump root iblock, if there is one */
        HDfprintf(stream, "%*s%-*s %x\n", indent + 3, "", MAX(0, fwidth - 3),
                  "Root indirect block flags:",
                  hdr->root_iblock_flags);
        HDfprintf(stream, "%*s%-*s %p\n", indent + 3, "", MAX(0, fwidth - 3),
                  "Root indirect block pointer:",
                  hdr->root_iblock);
        if(hdr->root_iblock)
            H5HF_iblock_print(hdr->root_iblock, dump_internal, stream, indent + 3, fwidth);
    } /* end if */

    FUNC_LEAVE_NOAPI_VOID
} /* end H5HF_hdr_print() */


/*-------------------------------------------------------------------------
 * Function:	H5HF_hdr_debug
 *
 * Purpose:	Prints debugging info about a fractal heap header.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		Feb 24 2006
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5HF_hdr_debug(H5F_t *f, 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(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 = H5HF__hdr_protect(f, addr, H5AC__READ_ONLY_FLAG)))
        HGOTO_ERROR(H5E_HEAP, H5E_CANTPROTECT, FAIL, "unable to protect fractal heap header")

    /* Print the information about the heap's header */
    H5HF_hdr_print(hdr, FALSE, stream, indent, fwidth);

done:
    if(hdr && H5AC_unprotect(f, 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
 *		May 13 2006
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5HF_dblock_debug_cb(H5FS_section_info_t *_sect, void *_udata)
{
    H5HF_free_section_t *sect = (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_NOERR

    /*
     * 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 */
        size_t u;               /* Local index variable */

        /* Calculate the starting & ending */
        if(sect_start < dblock_start)
            start = 0;
        else
            H5_CHECKED_ASSIGN(start, size_t, (sect_start - dblock_start), hsize_t)
        if(sect_end > dblock_end)
            H5_CHECKED_ASSIGN(end, size_t, udata->dblock_size, hsize_t)
        else
            H5_CHECKED_ASSIGN(end, size_t, ((sect_end - dblock_start) + 1), hsize_t)

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

        HDsnprintf(temp_str, sizeof(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)
            HDfprintf(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
 *		Feb 28 2006
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5HF_dblock_debug(H5F_t *f, 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 */
    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(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 = H5HF__hdr_protect(f, hdr_addr, H5AC__READ_ONLY_FLAG)))
        HGOTO_ERROR(H5E_HEAP, H5E_CANTPROTECT, FAIL, "unable to protect fractal heap header")

    /*
     * Load the heap direct block
     */
    if(NULL == (dblock = H5HF__man_dblock_protect(hdr, addr, block_size, NULL, 0, H5AC__READ_ONLY_FLAG)))
        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);

    /* Allocate space for the free space markers */
    if(NULL == (marker = (uint8_t *)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, FALSE) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "can't initialize heap free space")

    /* If there is a free space manager for the heap, check for sections that overlap this block */
    if(hdr->fspace) {
        H5HF_debug_iter_ud1_t udata;        /* User data for callbacks */

        /* 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, 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) < 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, "");
    } /* end if */
    else
        amount_free = 0;

    HDfprintf(stream, "%*s%-*s %.2f%%\n", indent, "", fwidth,
            "Percent of available space for data used:",
            ((double)100.0f * (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, 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, 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_print
 *
 * Purpose:	Prints debugging info about a fractal heap indirect block.
 *
 * Return:	Non-negative on success/Negative on failure
 *
 * Programmer:	Quincey Koziol
 *		Feb 23 2012
 *
 *-------------------------------------------------------------------------
 */
void
H5HF_iblock_print(const H5HF_indirect_t *iblock,
    hbool_t dump_internal, FILE *stream, int indent, int fwidth)
{
    const H5HF_hdr_t *hdr;              /* Pointer to heap's header */
    char temp_str[64];                  /* Temporary string, for formatting */
    size_t	u, v;                   /* Local index variable */

    FUNC_ENTER_NOAPI_NOINIT_NOERR

    /*
     * Check arguments.
     */
    HDassert(iblock);
    HDassert(iblock->hdr);
    HDassert(stream);
    HDassert(indent >= 0);
    HDassert(fwidth >= 0);

    /* Set up convenience variables */
    hdr = iblock->hdr;

    /* 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 */
    if(hdr->filter_len > 0)
        HDfprintf(stream, "%*sDirect Block Entries: (address/compressed size/filter mask)\n", indent, "");
    else
        HDfprintf(stream, "%*sDirect Block Entries: (address)\n", indent, "");
    for(u = 0; u < hdr->man_dtable.max_direct_rows && u < iblock->nrows; u++) {
        HDsnprintf(temp_str, sizeof(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;

            HDsnprintf(temp_str, sizeof(temp_str), "Col #%u:", (unsigned)v);
            if(hdr->filter_len > 0)
                HDfprintf(stream, "%*s%-*s %9a/%6Zu/%x\n", indent + 6, "", MAX(0, fwidth - 6),
                        temp_str,
                        iblock->ents[off].addr,
                        iblock->filt_ents[off].size,
                        iblock->filt_ents[off].filter_mask);
            else
                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 = H5VM__log2_of2((uint32_t)hdr->man_dtable.cparam.start_block_size) +
                            H5VM__log2_of2(hdr->man_dtable.cparam.width);
        for(u = hdr->man_dtable.max_direct_rows; u < iblock->nrows; u++) {
            num_indirect_rows = (H5VM__log2_gen(hdr->man_dtable.row_block_size[u]) - first_row_bits) + 1;
            HDsnprintf(temp_str, sizeof(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;

                HDsnprintf(temp_str, sizeof(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>");

    /* Print internal (runtime) information, if requested */
    if(dump_internal) {
        HDfprintf(stream, "%*sFractal Indirect Block Internal Information:\n", indent, "");

        /* Print general information */
        HDfprintf(stream, "%*s%-*s %Zu\n", indent + 3, "", MAX(0, fwidth - 3),
                  "Reference count:",
                  iblock->rc);

        /* Print parent's information */
        HDfprintf(stream, "%*s%-*s %p\n", indent + 3, "", MAX(0, fwidth - 3),
                  "Parent indirect block address:",
                  iblock->parent);
        if(iblock->parent)
            H5HF_iblock_print(iblock->parent, TRUE, stream, indent + 6, fwidth);
    } /* end if */

    FUNC_LEAVE_NOAPI_VOID
} /* end H5HF_iblock_print() */


/*-------------------------------------------------------------------------
 * 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
 *		Mar  7 2006
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5HF_iblock_debug(H5F_t *f, 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 */
    hbool_t did_protect;                /* Whether we protected the indirect block or not */
    herr_t      ret_value = SUCCEED;    /* Return value */

    FUNC_ENTER_NOAPI(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 = H5HF__hdr_protect(f, hdr_addr, H5AC__READ_ONLY_FLAG)))
        HGOTO_ERROR(H5E_HEAP, H5E_CANTPROTECT, FAIL, "unable to protect fractal heap header")

    /*
     * Load the heap indirect block
     */
    if(NULL == (iblock = H5HF__man_iblock_protect(hdr, addr, nrows, NULL, 0, FALSE, H5AC__READ_ONLY_FLAG, &did_protect)))
        HGOTO_ERROR(H5E_HEAP, H5E_CANTLOAD, FAIL, "unable to load fractal heap indirect block")

    /* Print the information about the heap's indirect block */
    H5HF_iblock_print(iblock, FALSE, stream, indent, fwidth);

done:
    if(iblock && H5HF__man_iblock_unprotect(iblock, H5AC__NO_FLAGS_SET, did_protect) < 0)
        HDONE_ERROR(H5E_HEAP, H5E_PROTECT, FAIL, "unable to release fractal heap direct block")
    if(hdr && H5AC_unprotect(f, 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
 *		May 13 2006
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5HF_sects_debug_cb(H5FS_section_info_t *_sect, void *_udata)
{
    H5HF_free_section_t *sect = (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

    /*
     * 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);

    /* 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
 *		May  9 2006
 *
 *-------------------------------------------------------------------------
 */
herr_t
H5HF_sects_debug(H5F_t *f, haddr_t fh_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(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 = H5HF__hdr_protect(f, fh_addr, H5AC__READ_ONLY_FLAG)))
        HGOTO_ERROR(H5E_HEAP, H5E_CANTPROTECT, FAIL, "unable to protect fractal heap header")

    /* Initialize the free space information for the heap */
    if(H5HF__space_start(hdr, FALSE) < 0)
        HGOTO_ERROR(H5E_HEAP, H5E_CANTINIT, FAIL, "can't initialize heap free space")

    /* If there is a free space manager for the heap, iterate over them */
    if(hdr->fspace) {
        H5HF_debug_iter_ud2_t udata;        /* User data for callbacks */

        /* 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, 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) < 0)
            HGOTO_ERROR(H5E_HEAP, H5E_CANTRELEASE, FAIL, "can't release free space info")
    } /* end if */

done:
    if(hdr && H5AC_unprotect(f, 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() */