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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 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have *
* access to either file, you may request a copy from help@hdfgroup.org. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
* Thursday, February 3, 2005
*
* Purpose: v2 B-tree testing functions.
*
*/
/****************/
/* Module Setup */
/****************/
#define H5B2_PACKAGE /*suppress error about including H5B2pkg */
#define H5B2_TESTING /*suppress warning about H5B2 testing funcs*/
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5B2pkg.h" /* v2 B-trees */
#include "H5Eprivate.h" /* Error handling */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/********************/
/* Package Typedefs */
/********************/
/********************/
/* Local Prototypes */
/********************/
static herr_t H5B2_test_store(void *nrecord, const void *udata);
static herr_t H5B2_test_compare(const void *rec1, const void *rec2);
static herr_t H5B2_test_encode(const H5F_t *f, uint8_t *raw,
const void *nrecord);
static herr_t H5B2_test_decode(const H5F_t *f, const uint8_t *raw,
void *nrecord);
static herr_t H5B2_test_debug(FILE *stream, const H5F_t *f, hid_t dxpl_id,
int indent, int fwidth, const void *record, const void *_udata);
/*********************/
/* Package Variables */
/*********************/
const H5B2_class_t H5B2_TEST[1]={{ /* B-tree class information */
H5B2_TEST_ID, /* Type of B-tree */
sizeof(hsize_t), /* Size of native record */
H5B2_test_store, /* Record storage callback */
H5B2_test_compare, /* Record comparison callback */
H5B2_test_encode, /* Record encoding callback */
H5B2_test_decode, /* Record decoding callback */
H5B2_test_debug /* Record debugging callback */
}};
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5B2_test_store
*
* Purpose: Store native information into record for B-tree
*
* Return: Success: non-negative
*
* Failure: negative
*
* Programmer: Quincey Koziol
* Thursday, February 3, 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5B2_test_store(void *nrecord, const void *udata)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5B2_test_store)
*(hsize_t *)nrecord = *(const hsize_t *)udata;
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5B2_test_store() */
/*-------------------------------------------------------------------------
* Function: H5B2_test_compare
*
* Purpose: Compare two native information records, according to some key
*
* Return: <0 if rec1 < rec2
* =0 if rec1 == rec2
* >0 if rec1 > rec2
*
* Programmer: Quincey Koziol
* Thursday, February 3, 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5B2_test_compare(const void *rec1, const void *rec2)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5B2_test_compare)
FUNC_LEAVE_NOAPI((herr_t)(*(const hssize_t *)rec1 - *(const hssize_t *)rec2))
} /* H5B2_test_compare() */
/*-------------------------------------------------------------------------
* Function: H5B2_test_encode
*
* Purpose: Encode native information into raw form for storing on disk
*
* Return: Success: non-negative
*
* Failure: negative
*
* Programmer: Quincey Koziol
* Thursday, February 3, 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5B2_test_encode(const H5F_t *f, uint8_t *raw, const void *nrecord)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5B2_test_encode)
H5F_ENCODE_LENGTH(f, raw, *(const hsize_t *)nrecord);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5B2_test_encode() */
/*-------------------------------------------------------------------------
* Function: H5B2_test_decode
*
* Purpose: Decode raw disk form of record into native form
*
* Return: Success: non-negative
*
* Failure: negative
*
* Programmer: Quincey Koziol
* Friday, February 4, 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5B2_test_decode(const H5F_t *f, const uint8_t *raw, void *nrecord)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5B2_test_decode)
H5F_DECODE_LENGTH(f, raw, *(hsize_t *)nrecord);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5B2_test_decode() */
/*-------------------------------------------------------------------------
* Function: H5B2_test_debug
*
* Purpose: Debug native form of record
*
* Return: Success: non-negative
*
* Failure: negative
*
* Programmer: Quincey Koziol
* Friday, February 4, 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5B2_test_debug(FILE *stream, const H5F_t UNUSED *f, hid_t UNUSED dxpl_id,
int indent, int fwidth, const void *record,
const void UNUSED *_udata)
{
FUNC_ENTER_NOAPI_NOINIT_NOFUNC(H5B2_test_debug)
HDassert (record);
HDfprintf(stream, "%*s%-*s %Hu\n", indent, "", fwidth, "Record:",
*(const hsize_t *)record);
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5B2_test_debug() */
/*-------------------------------------------------------------------------
* Function: H5B2_get_root_addr_test
*
* Purpose: Retrieve the root node's address
*
* Return: Success: non-negative
*
* Failure: negative
*
* Programmer: Quincey Koziol
* Saturday, February 26, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5B2_get_root_addr_test(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type,
haddr_t addr, haddr_t *root_addr)
{
H5B2_hdr_t *hdr = NULL; /* Pointer to the B-tree header */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5B2_get_root_addr_test)
/* Check arguments. */
HDassert(f);
HDassert(type);
HDassert(H5F_addr_defined(addr));
HDassert(root_addr);
/* Look up the B-tree header */
if(NULL == (hdr = (H5B2_hdr_t *)H5AC_protect(f, dxpl_id, H5AC_BT2_HDR, addr, type, NULL, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree header")
/* Get B-tree root addr */
*root_addr = hdr->root.addr;
done:
/* Release B-tree header node */
if(hdr && H5AC_unprotect(f, dxpl_id, H5AC_BT2_HDR, addr, hdr, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree header info")
FUNC_LEAVE_NOAPI(ret_value)
} /* H5B2_get_root_addr_test() */
/*-------------------------------------------------------------------------
* Function: H5B2_get_node_info_test
*
* Purpose: Determine information about a node holding a record in the B-tree
*
* Return: Success: non-negative
* Failure: negative
*
* Programmer: Quincey Koziol
* Thursday, August 31, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5B2_get_node_info_test(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type,
haddr_t addr, void *udata, H5B2_node_info_test_t *ninfo)
{
H5B2_hdr_t *hdr = NULL; /* Pointer to the B-tree header */
H5B2_node_ptr_t curr_node_ptr; /* Node pointer info for current node */
unsigned depth; /* Current depth of the tree */
int cmp; /* Comparison value of records */
unsigned idx; /* Location of record which matches key */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5B2_get_node_info_test, FAIL)
/* Check arguments. */
HDassert(f);
HDassert(type);
HDassert(H5F_addr_defined(addr));
/* Look up the B-tree header */
if(NULL == (hdr = (H5B2_hdr_t *)H5AC_protect(f, dxpl_id, H5AC_BT2_HDR, addr, type, NULL, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree header")
/* Set file pointer for this B-tree operation */
hdr->f = f;
/* Make copy of the root node pointer to start search with */
curr_node_ptr = hdr->root;
/* Current depth of the tree */
depth = hdr->depth;
/* Check for empty tree */
if(0 == curr_node_ptr.node_nrec)
HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "B-tree has no records")
/* Walk down B-tree to find record or leaf node where record is located */
cmp = -1;
while(depth > 0 && cmp != 0) {
H5B2_internal_t *internal; /* Pointer to internal node in B-tree */
H5B2_node_ptr_t next_node_ptr; /* Node pointer info for next node */
/* Lock B-tree current node */
if(NULL == (internal = H5B2_protect_internal(f, dxpl_id, hdr, curr_node_ptr.addr, curr_node_ptr.node_nrec, depth, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree internal node")
/* Locate node pointer for child */
cmp = H5B2_locate_record(hdr->type, internal->nrec, hdr->nat_off, internal->int_native, udata, &idx);
if(cmp > 0)
idx++;
if(cmp != 0) {
/* Get node pointer for next node to search */
next_node_ptr = internal->node_ptrs[idx];
/* Unlock current node */
if(H5AC_unprotect(f, dxpl_id, H5AC_BT2_INT, curr_node_ptr.addr, internal, H5AC__NO_FLAGS_SET) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node")
/* Set pointer to next node to load */
curr_node_ptr = next_node_ptr;
} /* end if */
else {
/* Unlock current node */
if(H5AC_unprotect(f, dxpl_id, H5AC_BT2_INT, curr_node_ptr.addr, internal, H5AC__NO_FLAGS_SET) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node")
/* Fill in information about the node */
ninfo->depth = depth;
ninfo->nrec = curr_node_ptr.node_nrec;
/* Indicate success */
HGOTO_DONE(SUCCEED)
} /* end else */
/* Decrement depth we're at in B-tree */
depth--;
} /* end while */
{
H5B2_leaf_t *leaf; /* Pointer to leaf node in B-tree */
/* Lock B-tree leaf node */
if(NULL == (leaf = (H5B2_leaf_t *)H5AC_protect(f, dxpl_id, H5AC_BT2_LEAF, curr_node_ptr.addr, &(curr_node_ptr.node_nrec), hdr, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree internal node")
/* Locate record */
cmp = H5B2_locate_record(hdr->type, leaf->nrec, hdr->nat_off, leaf->leaf_native, udata, &idx);
/* Unlock current node */
if(H5AC_unprotect(f, dxpl_id, H5AC_BT2_LEAF, curr_node_ptr.addr, leaf, H5AC__NO_FLAGS_SET) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree node")
/* Indicate the depth that the record was found */
if(cmp != 0)
HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "record not in B-tree")
} /* end block */
/* Fill in information about the leaf node */
ninfo->depth = depth;
ninfo->nrec = curr_node_ptr.node_nrec;
done:
/* Release header */
if(hdr) {
hdr->f = NULL;
if(H5AC_unprotect(f, dxpl_id, H5AC_BT2_HDR, addr, hdr, H5AC__NO_FLAGS_SET) < 0)
HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree header info")
} /* end if */
FUNC_LEAVE_NOAPI(ret_value)
} /* H5B2_get_node_info_test() */
/*-------------------------------------------------------------------------
* Function: H5B2_get_node_depth_test
*
* Purpose: Determine the depth of a node holding a record in the B-tree
*
* Note: Just a simple wrapper around the H5B2_get_node_info_test() routine
*
* Return: Success: non-negative depth of the node where the record
* was found
* Failure: negative
*
* Programmer: Quincey Koziol
* Saturday, August 26, 2006
*
*-------------------------------------------------------------------------
*/
int
H5B2_get_node_depth_test(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
void *udata)
{
H5B2_node_info_test_t ninfo; /* Node information */
int ret_value; /* Return information */
FUNC_ENTER_NOAPI(H5B2_get_node_depth_test, FAIL)
/* Check arguments. */
HDassert(f);
HDassert(type);
HDassert(H5F_addr_defined(addr));
/* Get information abou the node */
if(H5B2_get_node_info_test(f, dxpl_id, type, addr, udata, &ninfo) < 0)
HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "error looking up node info")
/* Set return value */
ret_value = (int)ninfo.depth;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* H5B2_get_node_depth_test() */
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