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-rw-r--r--src/H5Spoint.c279
1 files changed, 140 insertions, 139 deletions
diff --git a/src/H5Spoint.c b/src/H5Spoint.c
index 11cf448..6411b94 100644
--- a/src/H5Spoint.c
+++ b/src/H5Spoint.c
@@ -371,6 +371,144 @@ H5S__point_iter_next_block(H5S_sel_iter_t *iter)
/*--------------------------------------------------------------------------
NAME
+ H5S__point_get_seq_list
+ PURPOSE
+ Create a list of offsets & lengths for a selection
+ USAGE
+ herr_t H5S__point_get_seq_list(space,flags,iter,maxseq,maxelem,nseq,nelem,off,len)
+ H5S_t *space; IN: Dataspace containing selection to use.
+ unsigned flags; IN: Flags for extra information about operation
+ H5S_sel_iter_t *iter; IN/OUT: Selection iterator describing last
+ position of interest in selection.
+ size_t maxseq; IN: Maximum number of sequences to generate
+ size_t maxelem; IN: Maximum number of elements to include in the
+ generated sequences
+ size_t *nseq; OUT: Actual number of sequences generated
+ size_t *nelem; OUT: Actual number of elements in sequences generated
+ hsize_t *off; OUT: Array of offsets (in bytes)
+ size_t *len; OUT: Array of lengths (in bytes)
+ RETURNS
+ Non-negative on success/Negative on failure.
+ DESCRIPTION
+ Use the selection in the dataspace to generate a list of byte offsets and
+ lengths for the region(s) selected. Start/Restart from the position in the
+ ITER parameter. The number of sequences generated is limited by the MAXSEQ
+ parameter and the number of sequences actually generated is stored in the
+ NSEQ parameter.
+ GLOBAL VARIABLES
+ COMMENTS, BUGS, ASSUMPTIONS
+ EXAMPLES
+ REVISION LOG
+--------------------------------------------------------------------------*/
+static herr_t
+H5S__point_get_seq_list(const H5S_t *space, unsigned flags, H5S_sel_iter_t *iter,
+ size_t maxseq, size_t maxelem, size_t *nseq, size_t *nelem,
+ hsize_t *off, size_t *len)
+{
+ size_t io_left; /* The number of bytes left in the selection */
+ size_t start_io_left; /* The initial number of bytes left in the selection */
+ H5S_pnt_node_t *node; /* Point node */
+ hsize_t dims[H5S_MAX_RANK]; /* Total size of memory buf */
+ int ndims; /* Dimensionality of space*/
+ hsize_t acc; /* Coordinate accumulator */
+ hsize_t loc; /* Coordinate offset */
+ size_t curr_seq; /* Current sequence being operated on */
+ int i; /* Local index variable */
+ herr_t ret_value = SUCCEED; /* return value */
+
+ FUNC_ENTER_STATIC
+
+ /* Check args */
+ HDassert(space);
+ HDassert(iter);
+ HDassert(maxseq > 0);
+ HDassert(maxelem > 0);
+ HDassert(nseq);
+ HDassert(nelem);
+ HDassert(off);
+ HDassert(len);
+
+ /* Choose the minimum number of bytes to sequence through */
+ H5_CHECK_OVERFLOW(iter->elmt_left, hsize_t, size_t);
+ start_io_left = io_left = (size_t)MIN(iter->elmt_left, maxelem);
+
+ /* Get the dataspace dimensions */
+ if((ndims = H5S_get_simple_extent_dims (space, dims, NULL)) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to retrieve dataspace dimensions")
+
+ /* Walk through the points in the selection, starting at the current */
+ /* location in the iterator */
+ node = iter->u.pnt.curr;
+ curr_seq = 0;
+ while(NULL != node) {
+ /* Compute the offset of each selected point in the buffer */
+ for(i = ndims - 1, acc = iter->elmt_size, loc = 0; i >= 0; i--) {
+ loc += (hsize_t)((hssize_t)node->pnt[i] + space->select.offset[i]) * acc;
+ acc *= dims[i];
+ } /* end for */
+
+ /* Check if this is a later point in the selection */
+ if(curr_seq > 0) {
+ /* If a sorted sequence is requested, make certain we don't go backwards in the offset */
+ if((flags&H5S_GET_SEQ_LIST_SORTED) && loc<off[curr_seq-1])
+ break;
+
+ /* Check if this point extends the previous sequence */
+ /* (Unlikely, but possible) */
+ if(loc == (off[curr_seq - 1] + len[curr_seq - 1])) {
+ /* Extend the previous sequence */
+ len[curr_seq - 1] += iter->elmt_size;
+ } /* end if */
+ else {
+ /* Add a new sequence */
+ off[curr_seq] = loc;
+ len[curr_seq] = iter->elmt_size;
+
+ /* Increment sequence count */
+ curr_seq++;
+ } /* end else */
+ } /* end if */
+ else {
+ /* Add a new sequence */
+ off[curr_seq] = loc;
+ len[curr_seq] = iter->elmt_size;
+
+ /* Increment sequence count */
+ curr_seq++;
+ } /* end else */
+
+ /* Decrement number of elements left to process */
+ io_left--;
+
+ /* Move the iterator */
+ iter->u.pnt.curr = node->next;
+ iter->elmt_left--;
+
+ /* Check if we're finished with all sequences */
+ if(curr_seq == maxseq)
+ break;
+
+ /* Check if we're finished with all the elements available */
+ if(io_left == 0)
+ break;
+
+ /* Advance to the next point */
+ node = node->next;
+ } /* end while */
+
+ /* Set the number of sequences generated */
+ *nseq = curr_seq;
+
+ /* Set the number of elements used */
+ *nelem = start_io_left - io_left;
+
+done:
+ FUNC_LEAVE_NOAPI(ret_value)
+} /* end H5S__point_get_seq_list() */
+
+
+/*--------------------------------------------------------------------------
+ NAME
H5S__point_iter_release
PURPOSE
Release point selection iterator information for a dataspace
@@ -525,7 +663,7 @@ H5S__point_release(H5S_t *space)
{
H5S_pnt_node_t *curr, *next; /* Point selection nodes */
- FUNC_ENTER_NOAPI_NOINIT_NOERR
+ FUNC_ENTER_STATIC_NOERR
/* Check args */
HDassert(space);
@@ -640,6 +778,7 @@ H5S__point_copy(H5S_t *dst, const H5S_t *src, hbool_t H5_ATTR_UNUSED share_selec
FUNC_ENTER_STATIC
+ /* Sanity checks */
HDassert(src);
HDassert(dst);
@@ -1651,141 +1790,3 @@ done:
FUNC_LEAVE_API(ret_value)
} /* end H5Sselect_elements() */
-
-/*--------------------------------------------------------------------------
- NAME
- H5S__point_get_seq_list
- PURPOSE
- Create a list of offsets & lengths for a selection
- USAGE
- herr_t H5S__point_get_seq_list(space,flags,iter,maxseq,maxelem,nseq,nelem,off,len)
- H5S_t *space; IN: Dataspace containing selection to use.
- unsigned flags; IN: Flags for extra information about operation
- H5S_sel_iter_t *iter; IN/OUT: Selection iterator describing last
- position of interest in selection.
- size_t maxseq; IN: Maximum number of sequences to generate
- size_t maxelem; IN: Maximum number of elements to include in the
- generated sequences
- size_t *nseq; OUT: Actual number of sequences generated
- size_t *nelem; OUT: Actual number of elements in sequences generated
- hsize_t *off; OUT: Array of offsets
- size_t *len; OUT: Array of lengths
- RETURNS
- Non-negative on success/Negative on failure.
- DESCRIPTION
- Use the selection in the dataspace to generate a list of byte offsets and
- lengths for the region(s) selected. Start/Restart from the position in the
- ITER parameter. The number of sequences generated is limited by the MAXSEQ
- parameter and the number of sequences actually generated is stored in the
- NSEQ parameter.
- GLOBAL VARIABLES
- COMMENTS, BUGS, ASSUMPTIONS
- EXAMPLES
- REVISION LOG
---------------------------------------------------------------------------*/
-static herr_t
-H5S__point_get_seq_list(const H5S_t *space, unsigned flags, H5S_sel_iter_t *iter,
- size_t maxseq, size_t maxelem, size_t *nseq, size_t *nelem,
- hsize_t *off, size_t *len)
-{
- size_t io_left; /* The number of bytes left in the selection */
- size_t start_io_left; /* The initial number of bytes left in the selection */
- H5S_pnt_node_t *node; /* Point node */
- hsize_t dims[H5S_MAX_RANK]; /* Total size of memory buf */
- int ndims; /* Dimensionality of space*/
- hsize_t acc; /* Coordinate accumulator */
- hsize_t loc; /* Coordinate offset */
- size_t curr_seq; /* Current sequence being operated on */
- int i; /* Local index variable */
- herr_t ret_value=SUCCEED; /* return value */
-
- FUNC_ENTER_STATIC
-
- /* Check args */
- HDassert(space);
- HDassert(iter);
- HDassert(maxseq > 0);
- HDassert(maxelem > 0);
- HDassert(nseq);
- HDassert(nelem);
- HDassert(off);
- HDassert(len);
-
- /* Choose the minimum number of bytes to sequence through */
- H5_CHECK_OVERFLOW(iter->elmt_left, hsize_t, size_t);
- start_io_left = io_left = (size_t)MIN(iter->elmt_left, maxelem);
-
- /* Get the dataspace dimensions */
- if((ndims = H5S_get_simple_extent_dims (space, dims, NULL)) < 0)
- HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "unable to retrieve dataspace dimensions")
-
- /* Walk through the points in the selection, starting at the current */
- /* location in the iterator */
- node = iter->u.pnt.curr;
- curr_seq = 0;
- while(NULL != node) {
- /* Compute the offset of each selected point in the buffer */
- for(i = ndims - 1, acc = iter->elmt_size, loc = 0; i >= 0; i--) {
- loc += (hsize_t)((hssize_t)node->pnt[i] + space->select.offset[i]) * acc;
- acc *= dims[i];
- } /* end for */
-
- /* Check if this is a later point in the selection */
- if(curr_seq>0) {
- /* If a sorted sequence is requested, make certain we don't go backwards in the offset */
- if((flags&H5S_GET_SEQ_LIST_SORTED) && loc<off[curr_seq-1])
- break;
-
- /* Check if this point extends the previous sequence */
- /* (Unlikely, but possible) */
- if(loc==(off[curr_seq-1]+len[curr_seq-1])) {
- /* Extend the previous sequence */
- len[curr_seq-1]+=iter->elmt_size;
- } /* end if */
- else {
- /* Add a new sequence */
- off[curr_seq]=loc;
- len[curr_seq]=iter->elmt_size;
-
- /* Increment sequence count */
- curr_seq++;
- } /* end else */
- } /* end if */
- else {
- /* Add a new sequence */
- off[curr_seq]=loc;
- len[curr_seq]=iter->elmt_size;
-
- /* Increment sequence count */
- curr_seq++;
- } /* end else */
-
- /* Decrement number of elements left to process */
- io_left--;
-
- /* Move the iterator */
- iter->u.pnt.curr=node->next;
- iter->elmt_left--;
-
- /* Check if we're finished with all sequences */
- if(curr_seq==maxseq)
- break;
-
- /* Check if we're finished with all the elements available */
- if(io_left==0)
- break;
-
- /* Advance to the next point */
- node=node->next;
- } /* end while */
-
- /* Set the number of sequences generated */
- *nseq=curr_seq;
-
- /* Set the number of elements used */
- *nelem=start_io_left-io_left;
-
-done:
- FUNC_LEAVE_NOAPI(ret_value)
-} /* end H5S__point_get_seq_list() */
-