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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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.                                                        *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* Programmer:  Quincey Koziol
 *              Wednesday, July 9, 2003
 *
 * Purpose:     Local Heap object debugging functions.
 */

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

#include "H5HLmodule.h" /* This source code file is part of the H5HL module */

/***********/
/* Headers */
/***********/

#include "H5private.h"   /* Generic Functions            */
#include "H5Eprivate.h"  /* Error handling               */
#include "H5HLpkg.h"     /* Local heaps                  */
#include "H5MMprivate.h" /* Memory management            */

/*-------------------------------------------------------------------------
 * Function:    H5HL_debug
 *
 * Purpose:     Prints debugging information about a heap.
 *
 * Return:      SUCCEED/FAIL
 *
 * Programmer:  Robb Matzke
 *              Aug  1 1997
 *
 *-------------------------------------------------------------------------
 */
BEGIN_FUNC(PRIV, ERR, herr_t, SUCCEED, FAIL,
           H5HL_debug(H5F_t *f, haddr_t addr, FILE *stream, int indent, int fwidth))

H5HL_t *     h = NULL;
int          free_block;
H5HL_free_t *freelist;
uint8_t *    marker      = NULL;
size_t       amount_free = 0;

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

if (NULL == (h = (H5HL_t *)H5HL_protect(f, addr, H5AC__READ_ONLY_FLAG)))
    H5E_THROW(H5E_CANTPROTECT, "unable to load/protect local heap");

HDfprintf(stream, "%*sLocal Heap...\n", indent, "");
HDfprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
          "Header size (in bytes):", (unsigned long)h->prfx_size);
HDfprintf(stream, "%*s%-*s %a\n", indent, "", fwidth, "Address of heap data:", h->dblk_addr);
HDfprintf(stream, "%*s%-*s %Zu\n", indent, "", fwidth, "Data bytes allocated for heap:", h->dblk_size);

/* Traverse the free list and check that all free blocks fall within
 * the heap and that no two free blocks point to the same region of
 * the heap.
 */
if (NULL == (marker = (uint8_t *)H5MM_calloc(h->dblk_size)))
    H5E_THROW(H5E_CANTALLOC, "memory allocation failed");

HDfprintf(stream, "%*sFree Blocks (offset, size):\n", indent, "");
for (free_block = 0, freelist = h->freelist; freelist; freelist = freelist->next, free_block++) {
    char temp_str[32];

    HDsnprintf(temp_str, sizeof(temp_str), "Block #%d:", free_block);
    HDfprintf(stream, "%*s%-*s %8Zu, %8Zu\n", indent + 3, "", MAX(0, fwidth - 9), temp_str, freelist->offset,
              freelist->size);
    if ((freelist->offset + freelist->size) > h->dblk_size)
        HDfprintf(stream, "***THAT FREE BLOCK IS OUT OF BOUNDS!\n");
    else {
        int    overlap = 0;
        size_t i;

        for (i = 0; i < freelist->size; i++) {
            if (marker[freelist->offset + i])
                overlap++;
            marker[freelist->offset + i] = 1;
        } /* end for */
        if (overlap)
            HDfprintf(stream, "***THAT FREE BLOCK OVERLAPPED A PREVIOUS ONE!\n");
        else
            amount_free += freelist->size;
    } /* end else */
} /* end for */

if (h->dblk_size)
    HDfprintf(stream, "%*s%-*s %.2f%%\n", indent, "", fwidth, "Percent of heap used:",
              ((double)100.0f * (double)(h->dblk_size - amount_free) / (double)h->dblk_size));

/* Print the data in a VMS-style octal dump */
H5_buffer_dump(stream, indent, h->dblk_image, marker, (size_t)0, h->dblk_size);

CATCH
if (h && FAIL == H5HL_unprotect(h))
    H5E_THROW(H5E_CANTUNPROTECT, "unable to release/unprotect local heap");

if (marker && NULL != (marker = (uint8_t *)H5MM_xfree(marker)))
    H5E_THROW(H5E_CANTFREE, "can't free marker buffer");

END_FUNC(PRIV) /* end H5HL_debug() */