diff options
Diffstat (limited to 'src/H5Sselect.c')
| -rw-r--r-- | src/H5Sselect.c | 168 |
1 files changed, 166 insertions, 2 deletions
diff --git a/src/H5Sselect.c b/src/H5Sselect.c index c383fed..8b84e2c 100644 --- a/src/H5Sselect.c +++ b/src/H5Sselect.c @@ -250,11 +250,15 @@ H5S_select_copy(H5S_t *dst, const H5S_t *src, hbool_t share_selection) HDassert(dst); HDassert(src); + /* Release the current selection */ + if(H5S_SELECT_RELEASE(dst) < 0) + HGOTO_ERROR(H5E_DATASPACE, H5E_CANTRELEASE, FAIL, "unable to release selection") + /* Copy regular fields */ dst->select = src->select; /* Perform correct type of copy based on the type of selection */ - if((ret_value = (*src->select.type->copy)(dst,src,share_selection)) < 0) + if((ret_value = (*src->select.type->copy)(dst, src, share_selection)) < 0) HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOPY, FAIL, "can't copy selection specific information") done: @@ -281,7 +285,7 @@ done: herr_t H5S_select_release(H5S_t *ds) { - herr_t ret_value = FAIL; /* Return value */ + herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT @@ -1689,9 +1693,12 @@ H5S_get_select_type(const H5S_t *space) DESCRIPTION Checks to see if the current selection in the dataspaces are the same dimensionality and shape. + This is primarily used for reading the entire selection in one swoop. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS + This routine participates in the "Inlining C function pointers" pattern, + don't call it directly, use the appropriate macro defined in H5Sprivate.h. EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ @@ -1945,6 +1952,163 @@ done: /*-------------------------------------------------------------------------- NAME + H5Sselect_shape_same + PURPOSE + Check if two selections are the same shape + USAGE + htri_t H5Sselect_shape_same(space1_id, space2_id) + hid_t space1_id; IN: ID of 1st Dataspace pointer to compare + hid_t space2_id; IN: ID of 2nd Dataspace pointer to compare + RETURNS + TRUE/FALSE/FAIL + DESCRIPTION + Checks to see if the current selection in the dataspaces are the same + dimensionality and shape. + This is primarily used for reading the entire selection in one swoop. + GLOBAL VARIABLES + COMMENTS, BUGS, ASSUMPTIONS + EXAMPLES + REVISION LOG +--------------------------------------------------------------------------*/ +htri_t +H5Sselect_shape_same(hid_t space1_id, hid_t space2_id) +{ + H5S_t *space1, *space2; /* Dataspaces to compare */ + htri_t ret_value; /* Return value */ + + FUNC_ENTER_API(FAIL) + H5TRACE2("t", "ii", space1_id, space2_id); + + if(NULL == (space1 = (H5S_t *)H5I_object_verify(space1_id, H5I_DATASPACE))) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "not a dataspace") + if(NULL == (space2 = (H5S_t *)H5I_object_verify(space2_id, H5I_DATASPACE))) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "not a dataspace") + + if((ret_value = H5S_select_shape_same(space1, space2)) < 0) + HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOMPARE, FAIL, "can't compare selections") + +done: + FUNC_LEAVE_API(ret_value) +} /* end H5Sselect_shape_same() */ + + +/*-------------------------------------------------------------------------- + NAME + H5S_select_intersect_block + PURPOSE + Check if current selection intersects with a block + USAGE + htri_t H5S_select_intersect_block(space, start, end) + const H5S_t *space; IN: Dataspace to compare + const hsize_t *start; IN: Starting coordinate of block + const hsize_t *end; IN: Opposite ("ending") coordinate of block + RETURNS + TRUE / FALSE / FAIL + DESCRIPTION + Checks to see if the current selection in the dataspace intersects with + the block given. + GLOBAL VARIABLES + COMMENTS, BUGS, ASSUMPTIONS + Assumes that start & end block bounds are _inclusive_, so start == end + value OK. + + This routine participates in the "Inlining C function pointers" pattern, + don't call it directly, use the appropriate macro defined in H5Sprivate.h. +--------------------------------------------------------------------------*/ +htri_t +H5S_select_intersect_block(const H5S_t *space, const hsize_t *start, + const hsize_t *end) +{ + htri_t ret_value = TRUE; /* Return value */ + + FUNC_ENTER_NOAPI(FAIL) + + /* Check args */ + HDassert(space); + HDassert(start); + HDassert(end); + + /* If selections aren't "none", compare their bounds */ + if(H5S_SEL_NONE != H5S_GET_SELECT_TYPE(space)) { + hsize_t low[H5S_MAX_RANK]; /* Low bound of selection in dataspace */ + hsize_t high[H5S_MAX_RANK]; /* High bound of selection in dataspace */ + unsigned u; /* Local index variable */ + + /* Get low & high bounds for dataspace selection */ + if(H5S_SELECT_BOUNDS(space, low, high) < 0) + HGOTO_ERROR(H5E_DATASPACE, H5E_CANTGET, FAIL, "can't get selection bounds for dataspace") + + /* Loop over selection bounds and block, checking for overlap */ + for(u = 0; u < space->extent.rank; u++) + /* If selection bounds & block don't overlap, can leave now */ + if(!H5S_RANGE_OVERLAP(low[u], high[u], start[u], end[u])) + HGOTO_DONE(FALSE) + } /* end if */ + + /* Call selection type's intersect routine */ + if((ret_value = (*space->select.type->intersect_block)(space, start, end)) < 0) + HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOMPARE, FAIL, "can't intersect block with selection") + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5S_select_intersect_block() */ + + +/*-------------------------------------------------------------------------- + NAME + H5Sselect_intersect_block + PURPOSE + Check if current selection intersects with a block + USAGE + htri_t H5Sselect_intersect_block(space_id, start, end) + hid_t space1_id; IN: ID of dataspace pointer to compare + const hsize_t *start; IN: Starting coordinate of block + const hsize_t *end; IN: Opposite ("ending") coordinate of block + RETURNS + TRUE / FALSE / FAIL + DESCRIPTION + Checks to see if the current selection in the dataspace intersects with + the block given. + GLOBAL VARIABLES + COMMENTS, BUGS, ASSUMPTIONS + Assumes that start & end block bounds are _inclusive_, so start == end + value OK. + EXAMPLES + REVISION LOG +--------------------------------------------------------------------------*/ +htri_t +H5Sselect_intersect_block(hid_t space_id, const hsize_t *start, const hsize_t *end) +{ + H5S_t *space; /* Dataspace to query */ + unsigned u; /* Local index value */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_API(FAIL) + + /* Check arguments */ + if(NULL == (space = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE))) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADTYPE, FAIL, "not a dataspace") + if(NULL == start) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADVALUE, FAIL, "block start array pointer is NULL") + if(NULL == end) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADVALUE, FAIL, "block end array pointer is NULL") + + /* Range check start & end values */ + for(u = 0; u < space->extent.rank; u++) + if(start[u] > end[u]) + HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "block start[%u] (%llu) > end[%u] (%llu)", u, (unsigned long long)start[u], u, (unsigned long long)end[u]) + + /* Call internal routine to do comparison */ + if((ret_value = H5S_select_intersect_block(space, start, end)) < 0) + HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCOMPARE, FAIL, "can't compare selection and block") + +done: + FUNC_LEAVE_API(ret_value) +} /* end H5Sselect_intersect_block() */ + + +/*-------------------------------------------------------------------------- + NAME H5S_select_construct_projection PURPOSE |