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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright by The HDF Group. *
* 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://www.hdfgroup.org/licenses. *
* If you do not have access to either file, you may request a copy from *
* help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Bdbg.c
*
* Purpose: Debugging routines for B-link tree package.
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#include "H5Bmodule.h" /* This source code file is part of the H5B module */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Bpkg.h" /* B-link trees */
#include "H5Eprivate.h" /* Error handling */
#include "H5MMprivate.h" /* Memory management */
/*-------------------------------------------------------------------------
* Function: H5B_debug
*
* Purpose: Prints debugging info about a B-tree.
*
* Return: Non-negative on success/Negative on failure
*
*-------------------------------------------------------------------------
*/
herr_t
H5B_debug(H5F_t *f, haddr_t addr, FILE *stream, int indent, int fwidth, const H5B_class_t *type, void *udata)
{
H5B_t *bt = NULL;
H5UC_t *rc_shared; /* Ref-counted shared info */
H5B_shared_t *shared; /* Pointer to shared B-tree info */
H5B_cache_ud_t cache_udata; /* User-data for metadata cache callback */
unsigned u; /* Local index variable */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(FAIL)
/*
* Check arguments.
*/
assert(f);
assert(H5_addr_defined(addr));
assert(stream);
assert(indent >= 0);
assert(fwidth >= 0);
assert(type);
/* Currently does not support SWMR access */
assert(!(H5F_INTENT(f) & H5F_ACC_SWMR_WRITE));
/* Get shared info for B-tree */
if (NULL == (rc_shared = (type->get_shared)(f, udata)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTGET, FAIL, "can't retrieve B-tree's shared ref. count object");
shared = (H5B_shared_t *)H5UC_GET_OBJ(rc_shared);
assert(shared);
/*
* Load the tree node.
*/
cache_udata.f = f;
cache_udata.type = type;
cache_udata.rc_shared = rc_shared;
if (NULL == (bt = (H5B_t *)H5AC_protect(f, H5AC_BT, addr, &cache_udata, H5AC__READ_ONLY_FLAG)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree node");
/*
* Print the values.
*/
fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth, "Tree type ID:",
((shared->type->id) == H5B_SNODE_ID
? "H5B_SNODE_ID"
: ((shared->type->id) == H5B_CHUNK_ID ? "H5B_CHUNK_ID" : "Unknown!")));
fprintf(stream, "%*s%-*s %zu\n", indent, "", fwidth, "Size of node:", shared->sizeof_rnode);
fprintf(stream, "%*s%-*s %zu\n", indent, "", fwidth, "Size of raw (disk) key:", shared->sizeof_rkey);
fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
"Dirty flag:", bt->cache_info.is_dirty ? "True" : "False");
fprintf(stream, "%*s%-*s %u\n", indent, "", fwidth, "Level:", bt->level);
fprintf(stream, "%*s%-*s %" PRIuHADDR "\n", indent, "", fwidth, "Address of left sibling:", bt->left);
fprintf(stream, "%*s%-*s %" PRIuHADDR "\n", indent, "", fwidth, "Address of right sibling:", bt->right);
fprintf(stream, "%*s%-*s %u (%u)\n", indent, "", fwidth, "Number of children (max):", bt->nchildren,
shared->two_k);
/*
* Print the child addresses
*/
for (u = 0; u < bt->nchildren; u++) {
fprintf(stream, "%*sChild %d...\n", indent, "", u);
fprintf(stream, "%*s%-*s %" PRIuHADDR "\n", indent + 3, "", MAX(3, fwidth) - 3,
"Address:", bt->child[u]);
/* If there is a key debugging routine, use it to display the left & right keys */
if (type->debug_key) {
/* Decode the 'left' key & print it */
fprintf(stream, "%*s%-*s\n", indent + 3, "", MAX(3, fwidth) - 3, "Left Key:");
assert(H5B_NKEY(bt, shared, u));
(void)(type->debug_key)(stream, indent + 6, MAX(6, fwidth) - 6, H5B_NKEY(bt, shared, u), udata);
/* Decode the 'right' key & print it */
fprintf(stream, "%*s%-*s\n", indent + 3, "", MAX(3, fwidth) - 3, "Right Key:");
assert(H5B_NKEY(bt, shared, u + 1));
(void)(type->debug_key)(stream, indent + 6, MAX(6, fwidth) - 6, H5B_NKEY(bt, shared, u + 1),
udata);
} /* end if */
} /* end for */
done:
if (bt && H5AC_unprotect(f, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node");
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5B_debug() */
/*-------------------------------------------------------------------------
* Function: H5B__assert
*
* Purpose: Verifies that the tree is structured correctly.
*
* Return: Success: SUCCEED
*
* Failure: aborts if something is wrong.
*
*-------------------------------------------------------------------------
*/
#ifdef H5B_DEBUG
herr_t
H5B__assert(H5F_t *f, haddr_t addr, const H5B_class_t *type, void *udata)
{
H5B_t *bt = NULL;
H5UC_t *rc_shared; /* Ref-counted shared info */
H5B_shared_t *shared; /* Pointer to shared B-tree info */
H5B_cache_ud_t cache_udata; /* User-data for metadata cache callback */
int ncell, cmp;
static int ncalls = 0;
herr_t status;
herr_t ret_value = SUCCEED; /* Return value */
/* A queue of child data */
struct child_t {
haddr_t addr;
unsigned level;
struct child_t *next;
} *head = NULL, *tail = NULL, *prev = NULL, *cur = NULL, *tmp = NULL;
FUNC_ENTER_PACKAGE
if (0 == ncalls++) {
if (H5DEBUG(B))
fprintf(H5DEBUG(B), "H5B: debugging B-trees (expensive)\n");
} /* end if */
/* Get shared info for B-tree */
if (NULL == (rc_shared = (type->get_shared)(f, udata)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTGET, FAIL, "can't retrieve B-tree's shared ref. count object");
shared = (H5B_shared_t *)H5UC_GET_OBJ(rc_shared);
assert(shared);
/* Initialize the queue */
cache_udata.f = f;
cache_udata.type = type;
cache_udata.rc_shared = rc_shared;
bt = (H5B_t *)H5AC_protect(f, H5AC_BT, addr, &cache_udata, H5AC__READ_ONLY_FLAG);
assert(bt);
shared = (H5B_shared_t *)H5UC_GET_OBJ(bt->rc_shared);
assert(shared);
cur = (struct child_t *)H5MM_calloc(sizeof(struct child_t));
assert(cur);
cur->addr = addr;
cur->level = bt->level;
head = tail = cur;
status = H5AC_unprotect(f, H5AC_BT, addr, bt, H5AC__NO_FLAGS_SET);
assert(status >= 0);
bt = NULL; /* Make certain future references will be caught */
/*
* Do a breadth-first search of the tree. New nodes are added to the end
* of the queue as the `cur' pointer is advanced toward the end. We don't
* remove any nodes from the queue because we need them in the uniqueness
* test.
*/
for (ncell = 0; cur; ncell++) {
bt = (H5B_t *)H5AC_protect(f, H5AC_BT, cur->addr, &cache_udata, H5AC__READ_ONLY_FLAG);
assert(bt);
/* Check node header */
assert(bt->level == cur->level);
if (cur->next && cur->next->level == bt->level)
assert(H5_addr_eq(bt->right, cur->next->addr));
else
assert(!H5_addr_defined(bt->right));
if (prev && prev->level == bt->level)
assert(H5_addr_eq(bt->left, prev->addr));
else
assert(!H5_addr_defined(bt->left));
if (cur->level > 0) {
unsigned u;
for (u = 0; u < bt->nchildren; u++) {
/*
* Check that child nodes haven't already been seen. If they
* have then the tree has a cycle.
*/
for (tmp = head; tmp; tmp = tmp->next)
assert(H5_addr_ne(tmp->addr, bt->child[u]));
/* Add the child node to the end of the queue */
tmp = (struct child_t *)H5MM_calloc(sizeof(struct child_t));
assert(tmp);
tmp->addr = bt->child[u];
tmp->level = bt->level - 1;
tail->next = tmp;
tail = tmp;
/* Check that the keys are monotonically increasing */
cmp = (type->cmp2)(H5B_NKEY(bt, shared, u), udata, H5B_NKEY(bt, shared, u + 1));
assert(cmp < 0);
} /* end for */
} /* end if */
/* Release node */
status = H5AC_unprotect(f, H5AC_BT, cur->addr, bt, H5AC__NO_FLAGS_SET);
assert(status >= 0);
bt = NULL; /* Make certain future references will be caught */
/* Advance current location in queue */
prev = cur;
cur = cur->next;
} /* end for */
/* Free all entries from queue */
while (head) {
tmp = head->next;
H5MM_xfree(head);
head = tmp;
} /* end while */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5B__assert() */
#endif /* H5B_DEBUG */
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