diff options
Diffstat (limited to 'src/H5Sall.c')
| -rw-r--r-- | src/H5Sall.c | 370 |
1 files changed, 246 insertions, 124 deletions
diff --git a/src/H5Sall.c b/src/H5Sall.c index 3b77b98..fbe7041 100644 --- a/src/H5Sall.c +++ b/src/H5Sall.c @@ -18,38 +18,55 @@ * Purpose: "All" selection dataspace I/O functions. */ +/****************/ +/* Module Setup */ +/****************/ + #include "H5Smodule.h" /* This source code file is part of the H5S module */ +/***********/ +/* Headers */ +/***********/ #include "H5private.h" /* Generic Functions */ #include "H5Eprivate.h" /* Error handling */ #include "H5Iprivate.h" /* ID Functions */ #include "H5Spkg.h" /* Dataspace functions */ -#include "H5VMprivate.h" /* Vector functions */ +#include "H5VMprivate.h" /* Vector functions */ + + +/****************/ +/* Local Macros */ +/****************/ + + +/******************/ +/* Local Typedefs */ +/******************/ + -/* Static function prototypes */ +/********************/ +/* Local Prototypes */ +/********************/ /* Selection callbacks */ static herr_t H5S__all_copy(H5S_t *dst, const H5S_t *src, hbool_t share_selection); -static herr_t H5S__all_get_seq_list(const H5S_t *space, unsigned flags, - H5S_sel_iter_t *iter, size_t maxseq, size_t maxbytes, - size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len); static herr_t H5S__all_release(H5S_t *space); static htri_t H5S__all_is_valid(const H5S_t *space); static hssize_t H5S__all_serial_size(const H5S_t *space); static herr_t H5S__all_serialize(const H5S_t *space, uint8_t **p); -static herr_t H5S__all_deserialize(H5S_t *space, uint32_t version, uint8_t flags, - const uint8_t **p); +static herr_t H5S__all_deserialize(H5S_t **space, const uint8_t **p); static herr_t H5S__all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end); static herr_t H5S__all_offset(const H5S_t *space, hsize_t *off); static int H5S__all_unlim_dim(const H5S_t *space); static htri_t H5S__all_is_contiguous(const H5S_t *space); static htri_t H5S__all_is_single(const H5S_t *space); static htri_t H5S__all_is_regular(const H5S_t *space); +static htri_t H5S__all_shape_same(const H5S_t *space1, const H5S_t *space2); static herr_t H5S__all_adjust_u(H5S_t *space, const hsize_t *offset); static herr_t H5S__all_project_scalar(const H5S_t *space, hsize_t *offset); static herr_t H5S__all_project_simple(const H5S_t *space, H5S_t *new_space, hsize_t *offset); -static herr_t H5S__all_iter_init(H5S_sel_iter_t *iter, const H5S_t *space); +static herr_t H5S__all_iter_init(const H5S_t *space, H5S_sel_iter_t *iter); /* Selection iteration callbacks */ static herr_t H5S__all_iter_coords(const H5S_sel_iter_t *iter, hsize_t *coords); @@ -58,15 +75,26 @@ static hsize_t H5S__all_iter_nelmts(const H5S_sel_iter_t *iter); static htri_t H5S__all_iter_has_next_block(const H5S_sel_iter_t *iter); static herr_t H5S__all_iter_next(H5S_sel_iter_t *sel_iter, size_t nelem); static herr_t H5S__all_iter_next_block(H5S_sel_iter_t *sel_iter); +static herr_t H5S__all_iter_get_seq_list(H5S_sel_iter_t *iter, size_t maxseq, + size_t maxbytes, size_t *nseq, size_t *nbytes, hsize_t *off, size_t *len); static herr_t H5S__all_iter_release(H5S_sel_iter_t *sel_iter); + +/*****************************/ +/* Library Private Variables */ +/*****************************/ + + +/*********************/ +/* Package Variables */ +/*********************/ + /* Selection properties for "all" selections */ const H5S_select_class_t H5S_sel_all[1] = {{ H5S_SEL_ALL, /* Methods on selection */ H5S__all_copy, - H5S__all_get_seq_list, H5S__all_release, H5S__all_is_valid, H5S__all_serial_size, @@ -79,12 +107,18 @@ const H5S_select_class_t H5S_sel_all[1] = {{ H5S__all_is_contiguous, H5S__all_is_single, H5S__all_is_regular, + H5S__all_shape_same, H5S__all_adjust_u, H5S__all_project_scalar, H5S__all_project_simple, H5S__all_iter_init, }}; + +/*******************/ +/* Local Variables */ +/*******************/ + /* Iteration properties for "all" selections */ static const H5S_sel_iter_class_t H5S_sel_iter_all[1] = {{ H5S_SEL_ALL, @@ -96,16 +130,18 @@ static const H5S_sel_iter_class_t H5S_sel_iter_all[1] = {{ H5S__all_iter_has_next_block, H5S__all_iter_next, H5S__all_iter_next_block, + H5S__all_iter_get_seq_list, H5S__all_iter_release, }}; + /*------------------------------------------------------------------------- * Function: H5S__all_iter_init * * Purpose: Initializes iteration information for "all" selection. * - * Return: non-negative on success, negative on failure. + * Return: Non-negative on success, negative on failure. * * Programmer: Quincey Koziol * Tuesday, June 16, 1998 @@ -113,7 +149,7 @@ static const H5S_sel_iter_class_t H5S_sel_iter_all[1] = {{ *------------------------------------------------------------------------- */ static herr_t -H5S__all_iter_init(H5S_sel_iter_t *iter, const H5S_t *space) +H5S__all_iter_init(const H5S_t H5_ATTR_UNUSED *space, H5S_sel_iter_t *iter) { FUNC_ENTER_STATIC_NOERR @@ -121,9 +157,6 @@ H5S__all_iter_init(H5S_sel_iter_t *iter, const H5S_t *space) HDassert(space && H5S_SEL_ALL == H5S_GET_SELECT_TYPE(space)); HDassert(iter); - /* Initialize the number of elements to iterate over */ - iter->elmt_left = H5S_GET_SELECT_NPOINTS(space); - /* Start at the upper left location */ iter->u.all.elmt_offset = 0; iter->u.all.byte_offset = 0; @@ -132,7 +165,7 @@ H5S__all_iter_init(H5S_sel_iter_t *iter, const H5S_t *space) iter->type = H5S_sel_iter_all; FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_iter_init() */ +} /* end H5S__all_iter_init() */ /*------------------------------------------------------------------------- @@ -141,7 +174,7 @@ H5S__all_iter_init(H5S_sel_iter_t *iter, const H5S_t *space) * Purpose: Retrieve the current coordinates of iterator for current * selection * - * Return: non-negative on success, negative on failure + * Return: Non-negative on success, negative on failure * * Programmer: Quincey Koziol * Tuesday, April 22, 2003 @@ -165,7 +198,7 @@ H5S__all_iter_coords(const H5S_sel_iter_t *iter, hsize_t *coords) done: FUNC_LEAVE_NOAPI(ret_value) -} /* H5S__all_iter_coords() */ +} /* end H5S__all_iter_coords() */ /*------------------------------------------------------------------------- @@ -174,7 +207,7 @@ done: * Purpose: Retrieve the current block of iterator for current * selection * - * Return: non-negative on success, negative on failure + * Return: Non-negative on success, negative on failure * * Programmer: Quincey Koziol * Monday, June 2, 2003 @@ -204,7 +237,7 @@ H5S__all_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end) } /* end for */ FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_iter_block() */ +} /* end H5S__all_iter_block() */ /*------------------------------------------------------------------------- @@ -212,7 +245,7 @@ H5S__all_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end) * * Purpose: Return number of elements left to process in iterator * - * Return: non-negative number of elements on success, zero on failure + * Return: Non-negative number of elements on success, zero on failure * * Programmer: Quincey Koziol * Tuesday, June 16, 1998 @@ -228,7 +261,7 @@ H5S__all_iter_nelmts(const H5S_sel_iter_t *iter) HDassert(iter); FUNC_LEAVE_NOAPI(iter->elmt_left) -} /* H5S__all_iter_nelmts() */ +} /* end H5S__all_iter_nelmts() */ /*-------------------------------------------------------------------------- @@ -257,7 +290,7 @@ H5S__all_iter_has_next_block(const H5S_sel_iter_t H5_ATTR_UNUSED *iter) HDassert(iter); FUNC_LEAVE_NOAPI(FALSE) -} /* H5S__all_iter_has_next_block() */ +} /* end H5S__all_iter_has_next_block() */ /*-------------------------------------------------------------------------- @@ -292,7 +325,7 @@ H5S__all_iter_next(H5S_sel_iter_t *iter, size_t nelem) iter->u.all.byte_offset += (nelem * iter->elmt_size); FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_iter_next() */ +} /* end H5S__all_iter_next() */ /*-------------------------------------------------------------------------- @@ -321,7 +354,77 @@ H5S__all_iter_next_block(H5S_sel_iter_t H5_ATTR_UNUSED *iter) HDassert(iter); FUNC_LEAVE_NOAPI(FAIL) -} /* H5S__all_iter_next_block() */ +} /* end H5S__all_iter_next_block() */ + + +/*-------------------------------------------------------------------------- + NAME + H5S__all_iter_get_seq_list + PURPOSE + Create a list of offsets & lengths for a selection + USAGE + herr_t H5S__all_iter_get_seq_list(iter,maxseq,maxelem,nseq,nelem,off,len) + 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__all_iter_get_seq_list(H5S_sel_iter_t *iter, size_t H5_ATTR_UNUSED maxseq, + size_t maxelem, size_t *nseq, size_t *nelem, hsize_t *off, size_t *len) +{ + size_t elem_used; /* The number of elements used */ + + FUNC_ENTER_STATIC_NOERR + + /* Check args */ + HDassert(iter); + HDassert(maxseq > 0); + HDassert(maxelem > 0); + HDassert(nseq); + HDassert(nelem); + HDassert(off); + HDassert(len); + + /* Determine the actual number of elements to use */ + H5_CHECK_OVERFLOW(iter->elmt_left, hsize_t, size_t); + elem_used = MIN(maxelem, (size_t)iter->elmt_left); + HDassert(elem_used > 0); + + /* Compute the offset in the dataset */ + off[0] = iter->u.all.byte_offset; + len[0] = elem_used * iter->elmt_size; + + /* Should only need one sequence for 'all' selections */ + *nseq = 1; + + /* Set the number of elements used */ + *nelem = elem_used; + + /* Update the iterator */ + iter->elmt_left -= elem_used; + iter->u.all.elmt_offset += elem_used; + iter->u.all.byte_offset += len[0]; + + FUNC_LEAVE_NOAPI(SUCCEED) +} /* end H5S__all_iter_get_seq_list() */ /*-------------------------------------------------------------------------- @@ -350,7 +453,7 @@ H5S__all_iter_release(H5S_sel_iter_t H5_ATTR_UNUSED * iter) HDassert(iter); FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_iter_release() */ +} /* end H5S__all_iter_release() */ /*-------------------------------------------------------------------------- @@ -382,7 +485,7 @@ H5S__all_release(H5S_t *space) space->select.num_elem = 0; FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_release() */ +} /* end H5S__all_release() */ /*-------------------------------------------------------------------------- @@ -391,9 +494,10 @@ H5S__all_release(H5S_t *space) PURPOSE Copy a selection from one dataspace to another USAGE - herr_t H5S__all_copy(dst, src) + herr_t H5S__all_copy(dst, src, share_selection) H5S_t *dst; OUT: Pointer to the destination dataspace H5S_t *src; IN: Pointer to the source dataspace + hbool_t; IN: Whether to share the selection between the dataspaces RETURNS Non-negative on success/Negative on failure DESCRIPTION @@ -519,7 +623,7 @@ H5S__all_serialize(const H5S_t *space, uint8_t **p) /* Store the preamble information */ UINT32ENCODE(pp, (uint32_t)H5S_GET_SELECT_TYPE(space)); /* Store the type of selection */ - UINT32ENCODE(pp, (uint32_t)1); /* Store the version number */ + UINT32ENCODE(pp, (uint32_t)H5S_ALL_VERSION_1); /* Store the version number */ UINT32ENCODE(pp, (uint32_t)0); /* Store the un-used padding */ UINT32ENCODE(pp, (uint32_t)0); /* Store the additional information length */ @@ -527,7 +631,7 @@ H5S__all_serialize(const H5S_t *space, uint8_t **p) *p = pp; FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_serialize() */ +} /* end H5S__all_serialize() */ /*-------------------------------------------------------------------------- @@ -537,10 +641,8 @@ H5S__all_serialize(const H5S_t *space, uint8_t **p) Deserialize the current selection from a user-provided buffer. USAGE herr_t H5S_all_deserialize(space, p) - H5S_t *space; IN/OUT: Dataspace pointer to place + H5S_t **space; IN/OUT: Dataspace pointer to place selection into - uint32_t version IN: Selection version - uint8_t flags IN: Selection flags uint8 **p; OUT: Pointer to buffer holding serialized selection. Will be advanced to end of serialized selection. @@ -555,24 +657,53 @@ H5S__all_serialize(const H5S_t *space, uint8_t **p) REVISION LOG --------------------------------------------------------------------------*/ static herr_t -H5S__all_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t H5_ATTR_UNUSED flags, - const uint8_t H5_ATTR_UNUSED **p) +H5S__all_deserialize(H5S_t **space, const uint8_t **p) { + uint32_t version; /* Version number */ + H5S_t *tmp_space = NULL; /* Pointer to actual dataspace to use, + either *space or a newly allocated one */ herr_t ret_value = SUCCEED; /* return value */ FUNC_ENTER_STATIC - HDassert(space); HDassert(p); HDassert(*p); + /* As part of the efforts to push all selection-type specific coding + to the callbacks, the coding for the allocation of a null dataspace + is moved from H5S_select_deserialize() in H5Sselect.c. + This is needed for decoding virtual layout in H5O__layout_decode() */ + + /* Allocate space if not provided */ + if(!*space) { + if(NULL == (tmp_space = H5S_create(H5S_SIMPLE))) + HGOTO_ERROR(H5E_DATASPACE, H5E_CANTCREATE, FAIL, "can't create dataspace") + } /* end if */ + else + tmp_space = *space; + + /* Decode version */ + UINT32DECODE(*p, version); + + /* Skip over the remainder of the header */ + *p += 8; + /* Change to "all" selection */ - if(H5S_select_all(space, TRUE) < 0) + if(H5S_select_all(tmp_space, TRUE) < 0) HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection") + /* Return space to the caller if allocated */ + if(!*space) + *space = tmp_space; + done: + /* Free temporary space if not passed to caller (only happens on error) */ + if(!*space && tmp_space) + if(H5S_close(tmp_space) < 0) + HDONE_ERROR(H5E_DATASPACE, H5E_CANTFREE, FAIL, "can't close dataspace") + FUNC_LEAVE_NOAPI(ret_value) -} /* H5S__all_deserialize() */ +} /* end H5S__all_deserialize() */ /*-------------------------------------------------------------------------- @@ -622,7 +753,7 @@ H5S__all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end) } /* end for */ FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_bounds() */ +} /* end H5S__all_bounds() */ /*-------------------------------------------------------------------------- @@ -657,7 +788,7 @@ H5S__all_offset(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset) *offset = 0; FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_offset() */ +} /* end H5S__all_offset() */ /*-------------------------------------------------------------------------- @@ -716,7 +847,7 @@ H5S__all_is_contiguous(const H5S_t H5_ATTR_UNUSED *space) HDassert(space); FUNC_LEAVE_NOAPI(TRUE) -} /* H5S__all_is_contiguous() */ +} /* end H5S__all_is_contiguous() */ /*-------------------------------------------------------------------------- @@ -745,7 +876,7 @@ H5S__all_is_single(const H5S_t H5_ATTR_UNUSED *space) HDassert(space); FUNC_LEAVE_NOAPI(TRUE) -} /* H5S__all_is_single() */ +} /* end H5S__all_is_single() */ /*-------------------------------------------------------------------------- @@ -776,7 +907,71 @@ H5S__all_is_regular(const H5S_t H5_ATTR_UNUSED *space) HDassert(space); FUNC_LEAVE_NOAPI(TRUE) -} /* H5S__all_is_regular() */ +} /* end H5S__all_is_regular() */ + + +/*-------------------------------------------------------------------------- + NAME + H5S__all_shape_same + PURPOSE + Check if a two "all" selections are the same shape + USAGE + htri_t H5S__all_shape_same(space1, space2) + const H5S_t *space1; IN: First dataspace to check + const H5S_t *space2; IN: Second dataspace to check + RETURNS + TRUE / FALSE / FAIL + DESCRIPTION + Checks to see if the current selection in each dataspace are the same + shape. + GLOBAL VARIABLES + COMMENTS, BUGS, ASSUMPTIONS + EXAMPLES + REVISION LOG +--------------------------------------------------------------------------*/ +static htri_t +H5S__all_shape_same(const H5S_t *space1, const H5S_t *space2) +{ + int space1_dim; /* Current dimension in first dataspace */ + int space2_dim; /* Current dimension in second dataspace */ + htri_t ret_value = TRUE; /* Return value */ + + FUNC_ENTER_STATIC_NOERR + + /* Check args */ + HDassert(space1); + HDassert(space2); + + /* Initialize dataspace dims */ + space1_dim = (int)space1->extent.rank - 1; + space2_dim = (int)space2->extent.rank - 1; + + /* Recall that space1_rank >= space2_rank. + * + * In the following while loop, we test to see if space1 and space2 + * have identical size in all dimensions they have in common. + */ + while(space2_dim >= 0) { + if(space1->extent.size[space1_dim] != space2->extent.size[space2_dim]) + HGOTO_DONE(FALSE) + + space1_dim--; + space2_dim--; + } /* end while */ + + /* Since we are selecting the entire space, we must also verify that space1 + * has size 1 in all dimensions that it does not share with space2. + */ + while(space1_dim >= 0) { + if(space1->extent.size[space1_dim] != 1) + HGOTO_DONE(FALSE) + + space1_dim--; + } /* end while */ + +done: + FUNC_LEAVE_NOAPI(ret_value) +} /* end H5S__all_shape_same() */ /*-------------------------------------------------------------------------- @@ -807,7 +1002,7 @@ H5S__all_adjust_u(H5S_t H5_ATTR_UNUSED *space, const hsize_t H5_ATTR_UNUSED *off HDassert(offset); FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_adjust_u() */ +} /* end H5S__all_adjust_u() */ /*------------------------------------------------------------------------- @@ -816,7 +1011,7 @@ H5S__all_adjust_u(H5S_t H5_ATTR_UNUSED *space, const hsize_t H5_ATTR_UNUSED *off * Purpose: Projects a single element 'all' selection into a scalar * dataspace * - * Return: non-negative on success, negative on failure. + * Return: Non-negative on success, negative on failure. * * Programmer: Quincey Koziol * Sunday, July 18, 2010 @@ -836,7 +1031,7 @@ H5S__all_project_scalar(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset) *offset = 0; FUNC_LEAVE_NOAPI(SUCCEED) -} /* H5S__all_project_scalar() */ +} /* end H5S__all_project_scalar() */ /*------------------------------------------------------------------------- @@ -845,7 +1040,7 @@ H5S__all_project_scalar(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset) * Purpose: Projects an 'all' selection onto/into a simple dataspace * of a different rank * - * Return: non-negative on success, negative on failure. + * Return: Non-negative on success, negative on failure. * * Programmer: Quincey Koziol * Sunday, July 18, 2010 @@ -853,7 +1048,8 @@ H5S__all_project_scalar(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset) *------------------------------------------------------------------------- */ static herr_t -H5S__all_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *offset) +H5S__all_project_simple(const H5S_t H5_ATTR_UNUSED *base_space, + H5S_t *new_space, hsize_t H5_ATTR_UNUSED *offset) { herr_t ret_value = SUCCEED; /* Return value */ @@ -870,7 +1066,7 @@ H5S__all_project_simple(const H5S_t *base_space, H5S_t *new_space, hsize_t *offs done: FUNC_LEAVE_NOAPI(ret_value) -} /* H5S__all_project_simple() */ +} /* end H5S__all_project_simple() */ /*-------------------------------------------------------------------------- @@ -914,7 +1110,7 @@ H5S_select_all(H5S_t *space, hbool_t rel_prev) done: FUNC_LEAVE_NOAPI(ret_value) -} /* H5S_select_all() */ +} /* end H5S_select_all() */ /*-------------------------------------------------------------------------- @@ -953,79 +1149,5 @@ H5Sselect_all(hid_t spaceid) done: FUNC_LEAVE_API(ret_value) -} /* H5Sselect_all() */ - - -/*-------------------------------------------------------------------------- - NAME - H5S__all_get_seq_list - PURPOSE - Create a list of offsets & lengths for a selection - USAGE - herr_t H5S__all_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__all_get_seq_list(const H5S_t H5_ATTR_UNUSED *space, unsigned H5_ATTR_UNUSED flags, H5S_sel_iter_t *iter, - size_t H5_ATTR_UNUSED maxseq, size_t maxelem, size_t *nseq, size_t *nelem, - hsize_t *off, size_t *len) -{ - size_t elem_used; /* The number of elements used */ - - FUNC_ENTER_STATIC_NOERR - - /* Check args */ - HDassert(space); - HDassert(iter); - HDassert(maxseq > 0); - HDassert(maxelem > 0); - HDassert(nseq); - HDassert(nelem); - HDassert(off); - HDassert(len); - - /* Determine the actual number of elements to use */ - H5_CHECK_OVERFLOW(iter->elmt_left, hsize_t, size_t); - elem_used = MIN(maxelem, (size_t)iter->elmt_left); - HDassert(elem_used > 0); - - /* Compute the offset in the dataset */ - off[0] = iter->u.all.byte_offset; - len[0] = elem_used * iter->elmt_size; - - /* Should only need one sequence for 'all' selections */ - *nseq = 1; - - /* Set the number of elements used */ - *nelem = elem_used; - - /* Update the iterator */ - iter->elmt_left -= elem_used; - iter->u.all.elmt_offset += elem_used; - iter->u.all.byte_offset += len[0]; - - FUNC_LEAVE_NOAPI(SUCCEED) -} /* end H5S__all_get_seq_list() */ +} /* end H5Sselect_all() */ |