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-rw-r--r--src/H5B2.c281
1 files changed, 267 insertions, 14 deletions
diff --git a/src/H5B2.c b/src/H5B2.c
index 48385a3..77023d8 100644
--- a/src/H5B2.c
+++ b/src/H5B2.c
@@ -92,6 +92,12 @@ static herr_t H5B2_remove_leaf(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared,
static herr_t H5B2_iterate_node(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared,
unsigned depth, const H5B2_node_ptr_t *curr_node, H5B2_operator_t op,
void *op_data);
+static herr_t H5B2_neighbor_leaf(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared,
+ H5B2_node_ptr_t *curr_node_ptr, void *neighbor_loc,
+ H5B2_compare_t comp, void *udata, H5B2_found_t op, void *op_data);
+static herr_t H5B2_neighbor_internal(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared,
+ unsigned depth, H5B2_node_ptr_t *curr_node_ptr, void *neighbor_loc,
+ H5B2_compare_t comp, void *udata, H5B2_found_t op, void *op_data);
#ifdef H5B2_DEBUG
static herr_t H5B2_assert_leaf(H5B2_shared_t *shared, H5B2_leaf_t *leaf);
static herr_t H5B2_assert_leaf2(H5B2_shared_t *shared, H5B2_leaf_t *leaf, H5B2_leaf_t *leaf2);
@@ -2798,7 +2804,7 @@ H5B2_iterate_node(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, unsigned depth,
H5B2_internal_t *internal; /* Pointer to internal node */
/* Lock the current B-tree node */
- if (NULL == (internal = H5AC_protect(f, dxpl_id, H5AC_BT2_INT, curr_node->addr, &(curr_node->node_nrec), bt2_shared, H5AC_WRITE)))
+ if (NULL == (internal = H5AC_protect(f, dxpl_id, H5AC_BT2_INT, curr_node->addr, &(curr_node->node_nrec), bt2_shared, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree internal node")
/* Set up information about current node */
@@ -2811,7 +2817,7 @@ H5B2_iterate_node(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared, unsigned depth,
H5B2_leaf_t *leaf; /* Pointer to leaf node */
/* Lock the current B-tree node */
- if (NULL == (leaf = H5AC_protect(f, dxpl_id, H5AC_BT2_LEAF, curr_node->addr, &(curr_node->node_nrec), bt2_shared, H5AC_WRITE)))
+ if (NULL == (leaf = H5AC_protect(f, dxpl_id, H5AC_BT2_LEAF, curr_node->addr, &(curr_node->node_nrec), bt2_shared, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree leaf node")
/* Set up information about current node */
@@ -2886,7 +2892,7 @@ H5B2_iterate(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
HDassert(op);
/* Look up the B-tree header */
- if (NULL == (bt2 = H5AC_protect(f, dxpl_id, H5AC_BT2_HDR, addr, type, NULL, H5AC_WRITE)))
+ if (NULL == (bt2 = 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")
/* Safely grab pointer to reference counted shared B-tree info, so we can release the B-tree header if necessary */
@@ -2965,7 +2971,7 @@ H5B2_find(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
HDassert(op);
/* Look up the B-tree header */
- if (NULL == (bt2 = H5AC_protect(f, dxpl_id, H5AC_BT2_HDR, addr, type, NULL, H5AC_WRITE)))
+ if (NULL == (bt2 = 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")
/* Safely grab pointer to reference counted shared B-tree info, so we can release the B-tree header if necessary */
@@ -2999,7 +3005,7 @@ H5B2_find(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
H5B2_node_ptr_t next_node_ptr; /* Node pointer info for next node */
/* Lock B-tree current node */
- if (NULL == (internal = H5AC_protect(f, dxpl_id, H5AC_BT2_INT, curr_node_ptr.addr, &(curr_node_ptr.node_nrec), bt2_shared, H5AC_WRITE)))
+ if (NULL == (internal = H5AC_protect(f, dxpl_id, H5AC_BT2_INT, curr_node_ptr.addr, &(curr_node_ptr.node_nrec), bt2_shared, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree internal node")
/* Locate node pointer for child */
@@ -3043,7 +3049,7 @@ H5B2_find(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
H5B2_leaf_t *leaf; /* Pointer to leaf node in B-tree */
/* Lock B-tree leaf node */
- if (NULL == (leaf = H5AC_protect(f, dxpl_id, H5AC_BT2_LEAF, curr_node_ptr.addr, &(curr_node_ptr.node_nrec), bt2_shared, H5AC_WRITE)))
+ if (NULL == (leaf = H5AC_protect(f, dxpl_id, H5AC_BT2_LEAF, curr_node_ptr.addr, &(curr_node_ptr.node_nrec), bt2_shared, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree internal node")
/* Locate record */
@@ -3128,7 +3134,7 @@ H5B2_index(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
HDassert(op);
/* Look up the B-tree header */
- if (NULL == (bt2 = H5AC_protect(f, dxpl_id, H5AC_BT2_HDR, addr, type, NULL, H5AC_WRITE)))
+ if (NULL == (bt2 = 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")
/* Safely grab pointer to reference counted shared B-tree info, so we can release the B-tree header if necessary */
@@ -3166,7 +3172,7 @@ H5B2_index(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
unsigned u; /* Local index variable */
/* Lock B-tree current node */
- if (NULL == (internal = H5AC_protect(f, dxpl_id, H5AC_BT2_INT, curr_node_ptr.addr, &(curr_node_ptr.node_nrec), bt2_shared, H5AC_WRITE)))
+ if (NULL == (internal = H5AC_protect(f, dxpl_id, H5AC_BT2_INT, curr_node_ptr.addr, &(curr_node_ptr.node_nrec), bt2_shared, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree internal node")
/* Search for record with correct index */
@@ -3237,7 +3243,7 @@ H5B2_index(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
H5B2_leaf_t *leaf; /* Pointer to leaf node in B-tree */
/* Lock B-tree leaf node */
- if (NULL == (leaf = H5AC_protect(f, dxpl_id, H5AC_BT2_LEAF, curr_node_ptr.addr, &(curr_node_ptr.node_nrec), bt2_shared, H5AC_WRITE)))
+ if (NULL == (leaf = H5AC_protect(f, dxpl_id, H5AC_BT2_LEAF, curr_node_ptr.addr, &(curr_node_ptr.node_nrec), bt2_shared, H5AC_READ)))
HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree internal node")
/* Sanity check index */
@@ -3527,11 +3533,11 @@ H5B2_remove_internal(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared,
/* Attempt to remove node */
if(depth>1) {
if(H5B2_remove_internal(f,dxpl_id,bt2_shared,depth_decreased, swap_loc, depth-1,new_cache_info,new_node_ptr,udata)<0)
- HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "unable to remove record from B-tree internal node")
+ HGOTO_ERROR(H5E_BTREE, H5E_CANTDELETE, FAIL, "unable to remove record from B-tree internal node")
} /* end if */
else {
if(H5B2_remove_leaf(f,dxpl_id,bt2_shared,new_node_ptr,udata)<0)
- HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "unable to remove record from B-tree leaf node")
+ HGOTO_ERROR(H5E_BTREE, H5E_CANTDELETE, FAIL, "unable to remove record from B-tree leaf node")
} /* end else */
/* Update record count for node pointer to current node */
@@ -3599,13 +3605,13 @@ H5B2_remove(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
hbool_t depth_decreased=FALSE; /* Flag to indicate whether the depth of the B-tree decreased */
if(H5B2_remove_internal(f,dxpl_id,bt2->shared, &depth_decreased, NULL, bt2->depth,&(bt2->cache_info),&bt2->root,udata)<0)
- HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "unable to remove record from B-tree internal node")
+ HGOTO_ERROR(H5E_BTREE, H5E_CANTDELETE, FAIL, "unable to remove record from B-tree internal node")
bt2->depth -= depth_decreased;
} /* end if */
else {
if(H5B2_remove_leaf(f,dxpl_id,bt2->shared,&bt2->root,udata)<0)
- HGOTO_ERROR(H5E_BTREE, H5E_CANTINSERT, FAIL, "unable to remove record from B-tree leaf node")
+ HGOTO_ERROR(H5E_BTREE, H5E_CANTDELETE, FAIL, "unable to remove record from B-tree leaf node")
} /* end else */
/* Decrement # of records in B-tree */
@@ -3652,7 +3658,7 @@ H5B2_get_nrec(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
HDassert(nrec);
/* Look up the B-tree header */
- if (NULL == (bt2 = H5AC_protect(f, dxpl_id, H5AC_BT2_HDR, addr, type, NULL, H5AC_WRITE)))
+ if (NULL == (bt2 = 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 number of records */
@@ -3666,6 +3672,253 @@ done:
FUNC_LEAVE_NOAPI(ret_value)
} /* H5B2_get_nrec() */
+
+/*-------------------------------------------------------------------------
+ * Function: H5B2_neighbor_leaf
+ *
+ * Purpose: Locate a record relative to the specified information in a
+ * B-tree leaf node and return that information by filling in
+ * fields of the
+ * caller-supplied UDATA pointer depending on the type of leaf node
+ * requested. The UDATA can point to additional data passed
+ * to the key comparison function.
+ *
+ * The 'OP' routine is called with the record found and the
+ * OP_DATA pointer, to allow caller to return information about
+ * the record.
+ *
+ * The RANGE indicates whether to search for records less than or
+ * equal to, or greater than or equal to the information passed
+ * in with UDATA.
+ *
+ * Return: Non-negative on success, negative on failure.
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Mar 9 2005
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5B2_neighbor_leaf(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared,
+ H5B2_node_ptr_t *curr_node_ptr, void *neighbor_loc,
+ H5B2_compare_t comp, void *udata, H5B2_found_t op, void *op_data)
+{
+ H5B2_leaf_t *leaf; /* Pointer to leaf node */
+ H5B2_shared_t *shared; /* Pointer to B-tree's shared information */
+ unsigned idx; /* Location of record which matches key */
+ int cmp=0; /* Comparison value of records */
+ herr_t ret_value = SUCCEED;
+
+ FUNC_ENTER_NOAPI_NOINIT(H5B2_neighbor_leaf)
+
+ /* Check arguments. */
+ HDassert(f);
+ HDassert(bt2_shared);
+ HDassert(curr_node_ptr);
+ HDassert(H5F_addr_defined(curr_node_ptr->addr));
+ HDassert(op);
+
+ /* Lock current B-tree node */
+ if (NULL == (leaf = H5AC_protect(f, dxpl_id, H5AC_BT2_LEAF, curr_node_ptr->addr, &(curr_node_ptr->node_nrec), bt2_shared, H5AC_READ)))
+ HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree leaf node")
+
+ /* Get the pointer to the shared B-tree info */
+ shared=H5RC_GET_OBJ(bt2_shared);
+ HDassert(shared);
+
+
+ /* Locate node pointer for child */
+ cmp = H5B2_locate_record(shared->type, leaf->nrec, shared->nat_off, leaf->leaf_native, udata, &idx);
+ if(cmp > 0)
+ idx++;
+ else
+ if(cmp == 0 && comp == H5B2_COMPARE_GREATER)
+ idx++;
+
+ /* Set the neighbor location, if appropriate */
+ if(comp == H5B2_COMPARE_LESS) {
+ if(idx > 0)
+ neighbor_loc = H5B2_LEAF_NREC(leaf,shared,idx-1);
+ } /* end if */
+ else {
+ HDassert(comp == H5B2_COMPARE_GREATER);
+
+ if(idx < leaf->nrec)
+ neighbor_loc = H5B2_LEAF_NREC(leaf,shared,idx);
+ } /* end else */
+
+ /* Make callback if neighbor record has been found */
+ if(neighbor_loc) {
+ /* Make callback for current record */
+ if ((op)(neighbor_loc, op_data) < 0)
+ HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "'found' callback failed for B-tree neighbor operation")
+ } /* end if */
+ else
+ HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "unable to find neighbor record in B-tree")
+
+done:
+ /* Release the B-tree internal node */
+ if (leaf && H5AC_unprotect(f, dxpl_id, H5AC_BT2_LEAF, curr_node_ptr->addr, leaf, H5AC__NO_FLAGS_SET) < 0)
+ HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release B-tree leaf node")
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* H5B2_neighbor_leaf() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5B2_neighbor_internal
+ *
+ * Purpose: Locate a record relative to the specified information in a
+ * B-tree internal node and return that information by filling in
+ * fields of the
+ * caller-supplied UDATA pointer depending on the type of leaf node
+ * requested. The UDATA can point to additional data passed
+ * to the key comparison function.
+ *
+ * The 'OP' routine is called with the record found and the
+ * OP_DATA pointer, to allow caller to return information about
+ * the record.
+ *
+ * The RANGE indicates whether to search for records less than or
+ * equal to, or greater than or equal to the information passed
+ * in with UDATA.
+ *
+ * Return: Non-negative on success, negative on failure.
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Mar 9 2005
+ *
+ *-------------------------------------------------------------------------
+ */
+static herr_t
+H5B2_neighbor_internal(H5F_t *f, hid_t dxpl_id, H5RC_t *bt2_shared,
+ unsigned depth, H5B2_node_ptr_t *curr_node_ptr, void *neighbor_loc,
+ H5B2_compare_t comp, void *udata, H5B2_found_t op, void *op_data)
+{
+ H5B2_internal_t *internal; /* Pointer to internal node */
+ H5B2_shared_t *shared; /* Pointer to B-tree's shared information */
+ unsigned idx; /* Location of record which matches key */
+ int cmp=0; /* Comparison value of records */
+ herr_t ret_value = SUCCEED;
+
+ FUNC_ENTER_NOAPI_NOINIT(H5B2_neighbor_internal)
+
+ /* Check arguments. */
+ HDassert(f);
+ HDassert(bt2_shared);
+ HDassert(depth>0);
+ HDassert(curr_node_ptr);
+ HDassert(H5F_addr_defined(curr_node_ptr->addr));
+ HDassert(op);
+
+ /* Lock current B-tree node */
+ if (NULL == (internal = H5AC_protect(f, dxpl_id, H5AC_BT2_INT, curr_node_ptr->addr, &(curr_node_ptr->node_nrec), bt2_shared, H5AC_READ)))
+ HGOTO_ERROR(H5E_BTREE, H5E_CANTPROTECT, FAIL, "unable to load B-tree internal node")
+
+ /* Get the pointer to the shared B-tree info */
+ shared=H5RC_GET_OBJ(bt2_shared);
+ HDassert(shared);
+
+ /* Locate node pointer for child */
+ cmp = H5B2_locate_record(shared->type,internal->nrec,shared->nat_off,internal->int_native,udata,&idx);
+ if(cmp > 0)
+ idx++;
+
+ /* Set the neighbor location, if appropriate */
+ if(comp == H5B2_COMPARE_LESS) {
+ if(idx > 0)
+ neighbor_loc = H5B2_INT_NREC(internal,shared,idx-1);
+ } /* end if */
+ else {
+ HDassert(comp == H5B2_COMPARE_GREATER);
+
+ if(idx < internal->nrec)
+ neighbor_loc = H5B2_INT_NREC(internal,shared,idx);
+ } /* end else */
+
+ /* Attempt to find neighboring record */
+ if(depth>1) {
+ if(H5B2_neighbor_internal(f, dxpl_id, bt2_shared, depth-1, &internal->node_ptrs[idx], neighbor_loc, comp, udata, op, op_data)<0)
+ HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "unable to find neighbor record in B-tree internal node")
+ } /* end if */
+ else {
+ if(H5B2_neighbor_leaf(f, dxpl_id, bt2_shared, &internal->node_ptrs[idx], neighbor_loc, comp, udata, op, op_data)<0)
+ HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "unable to find neighbor record in B-tree leaf node")
+ } /* end else */
+
+done:
+ /* Release the B-tree internal node */
+ if (internal && H5AC_unprotect(f, dxpl_id, H5AC_BT2_INT, curr_node_ptr->addr, internal, H5AC__NO_FLAGS_SET) < 0)
+ HDONE_ERROR(H5E_BTREE, H5E_CANTUNPROTECT, FAIL, "unable to release internal B-tree node")
+
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* H5B2_neighbor_internal() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5B2_neighbor
+ *
+ * Purpose: Locate a record relative to the specified information in a
+ * B-tree and return that information by filling in fields of the
+ * caller-supplied UDATA pointer depending on the type of leaf node
+ * requested. The UDATA can point to additional data passed
+ * to the key comparison function.
+ *
+ * The 'OP' routine is called with the record found and the
+ * OP_DATA pointer, to allow caller to return information about
+ * the record.
+ *
+ * The RANGE indicates whether to search for records less than or
+ * equal to, or greater than or equal to the information passed
+ * in with UDATA.
+ *
+ * Return: Non-negative on success, negative on failure.
+ *
+ * Programmer: Quincey Koziol
+ * koziol@ncsa.uiuc.edu
+ * Mar 8 2005
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5B2_neighbor(H5F_t *f, hid_t dxpl_id, const H5B2_class_t *type, haddr_t addr,
+ H5B2_compare_t range, void *udata, H5B2_found_t op, void *op_data)
+{
+ H5B2_t *bt2=NULL; /* Pointer to the B-tree header */
+ herr_t ret_value = SUCCEED;
+
+ FUNC_ENTER_NOAPI(H5B2_neighbor, FAIL)
+
+ /* Check arguments. */
+ HDassert(f);
+ HDassert(type);
+ HDassert(H5F_addr_defined(addr));
+ HDassert(op);
+
+ /* Look up the B-tree header */
+ if (NULL == (bt2 = 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")
+
+ /* Attempt to find neighbor record in B-tree */
+ if(bt2->depth>0) {
+ if(H5B2_neighbor_internal(f, dxpl_id, bt2->shared, bt2->depth, &bt2->root, NULL, range, udata, op, op_data)<0)
+ HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "unable to find neighbor record in B-tree internal node")
+ } /* end if */
+ else {
+ if(H5B2_neighbor_leaf(f, dxpl_id, bt2->shared, &bt2->root, NULL, range, udata, op, op_data)<0)
+ HGOTO_ERROR(H5E_BTREE, H5E_NOTFOUND, FAIL, "unable to find neighbor record in B-tree leaf node")
+ } /* end else */
+
+done:
+ /* Release the B-tree header info */
+ if (bt2 && H5AC_unprotect(f, dxpl_id, H5AC_BT2_HDR, addr, bt2, 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_neighbor() */
+
#ifdef H5B2_DEBUG
/*-------------------------------------------------------------------------