Qt.git - Qt s a cross-platform application framework that is used for developing application software that can be run on various software and hardware platforms with little or no change in the underlying codebase, while still being a native application with native capabilities and speed.

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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 COPYING file, which can be found at the root of the source code * * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. * * 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> * Tuesday, June 16, 1998 * * 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 */ /****************/ /* Local Macros */ /****************/ /******************/ /* Local Typedefs */ /******************/ /********************/ /* 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_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_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(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); static herr_t H5S__all_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end); 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_release, H5S__all_is_valid, H5S__all_serial_size, H5S__all_serialize, H5S__all_deserialize, H5S__all_bounds, H5S__all_offset, H5S__all_unlim_dim, NULL, 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, /* Methods on selection iterator */ H5S__all_iter_coords, H5S__all_iter_block, H5S__all_iter_nelmts, 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. * * Programmer: Quincey Koziol * Tuesday, June 16, 1998 * *------------------------------------------------------------------------- */ static herr_t H5S__all_iter_init(const H5S_t H5_ATTR_UNUSED *space, H5S_sel_iter_t *iter) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(space && H5S_SEL_ALL == H5S_GET_SELECT_TYPE(space)); HDassert(iter); /* Start at the upper left location */ iter->u.all.elmt_offset = 0; iter->u.all.byte_offset = 0; /* Initialize type of selection iterator */ iter->type = H5S_sel_iter_all; FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_iter_init() */ /*------------------------------------------------------------------------- * Function: H5S__all_iter_coords * * Purpose: Retrieve the current coordinates of iterator for current * selection * * Return: Non-negative on success, negative on failure * * Programmer: Quincey Koziol * Tuesday, April 22, 2003 * *------------------------------------------------------------------------- */ static herr_t H5S__all_iter_coords(const H5S_sel_iter_t *iter, hsize_t *coords) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_STATIC /* Check args */ HDassert(iter); HDassert(coords); /* Calculate the coordinates for the current iterator offset */ if(H5VM_array_calc(iter->u.all.elmt_offset, iter->rank, iter->dims, coords) < 0) HGOTO_ERROR(H5E_DATASPACE, H5E_CANTGET, FAIL, "can't retrieve coordinates") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5S__all_iter_coords() */ /*------------------------------------------------------------------------- * Function: H5S__all_iter_block * * Purpose: Retrieve the current block of iterator for current * selection * * Return: Non-negative on success, negative on failure * * Programmer: Quincey Koziol * Monday, June 2, 2003 * *------------------------------------------------------------------------- */ static herr_t H5S__all_iter_block(const H5S_sel_iter_t *iter, hsize_t *start, hsize_t *end) { unsigned u; /* Local index variable */ FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(iter); HDassert(start); HDassert(end); for(u = 0; u < iter->rank; u++) { /* Set the start of the 'all' block */ /* (Always '0' coordinates for now) */ start[u] = 0; /* Compute the end of the 'all' block */ /* (Always size of the extent for now) */ end[u] = iter->dims[u] - 1; } /* end for */ FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_iter_block() */ /*------------------------------------------------------------------------- * Function: H5S__all_iter_nelmts * * Purpose: Return number of elements left to process in iterator * * Return: Non-negative number of elements on success, zero on failure * * Programmer: Quincey Koziol * Tuesday, June 16, 1998 * *------------------------------------------------------------------------- */ static hsize_t H5S__all_iter_nelmts(const H5S_sel_iter_t *iter) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(iter); FUNC_LEAVE_NOAPI(iter->elmt_left) } /* end H5S__all_iter_nelmts() */ /*-------------------------------------------------------------------------- NAME H5S__all_iter_has_next_block PURPOSE Check if there is another block left in the current iterator USAGE htri_t H5S__all_iter_has_next_block(iter) const H5S_sel_iter_t *iter; IN: Pointer to selection iterator RETURNS Non-negative (TRUE/FALSE) on success/Negative on failure DESCRIPTION Check if there is another block available in the selection iterator. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static htri_t H5S__all_iter_has_next_block(const H5S_sel_iter_t H5_ATTR_UNUSED *iter) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(iter); FUNC_LEAVE_NOAPI(FALSE) } /* end H5S__all_iter_has_next_block() */ /*-------------------------------------------------------------------------- NAME H5S__all_iter_next PURPOSE Increment selection iterator USAGE herr_t H5S__all_iter_next(iter, nelem) H5S_sel_iter_t *iter; IN: Pointer to selection iterator size_t nelem; IN: Number of elements to advance by RETURNS Non-negative on success/Negative on failure DESCRIPTION Advance selection iterator to the NELEM'th next element in the selection. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S__all_iter_next(H5S_sel_iter_t *iter, size_t nelem) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(iter); HDassert(nelem > 0); /* Increment the iterator */ iter->u.all.elmt_offset += nelem; iter->u.all.byte_offset += (nelem * iter->elmt_size); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_iter_next() */ /*-------------------------------------------------------------------------- NAME H5S__all_iter_next_block PURPOSE Increment selection iterator to next block USAGE herr_t H5S__all_iter_next_block(iter) H5S_sel_iter_t *iter; IN: Pointer to selection iterator RETURNS Non-negative on success/Negative on failure DESCRIPTION Advance selection iterator to the next block in the selection. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S__all_iter_next_block(H5S_sel_iter_t H5_ATTR_UNUSED *iter) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(iter); FUNC_LEAVE_NOAPI(FAIL) } /* 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() */ /*-------------------------------------------------------------------------- NAME H5S__all_iter_release PURPOSE Release "all" selection iterator information for a dataspace USAGE herr_t H5S__all_iter_release(iter) H5S_sel_iter_t *iter; IN: Pointer to selection iterator RETURNS Non-negative on success/Negative on failure DESCRIPTION Releases all information for a dataspace "all" selection iterator GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S__all_iter_release(H5S_sel_iter_t H5_ATTR_UNUSED * iter) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(iter); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_iter_release() */ /*-------------------------------------------------------------------------- NAME H5S__all_release PURPOSE Release all selection information for a dataspace USAGE herr_t H5S__all_release(space) H5S_t *space; IN: Pointer to dataspace RETURNS Non-negative on success/Negative on failure DESCRIPTION Releases "all" selection information for a dataspace GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S__all_release(H5S_t *space) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(space); /* Reset the number of elements in the selection */ space->select.num_elem = 0; FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_release() */ /*-------------------------------------------------------------------------- NAME H5S__all_copy PURPOSE Copy a selection from one dataspace to another USAGE 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 Copies the 'all' selection information from the source dataspace to the destination dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S__all_copy(H5S_t *dst, const H5S_t H5_ATTR_UNUSED *src, hbool_t H5_ATTR_UNUSED share_selection) { FUNC_ENTER_STATIC_NOERR HDassert(src); HDassert(dst); /* Set number of elements in selection */ dst->select.num_elem = (hsize_t)H5S_GET_EXTENT_NPOINTS(dst); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_copy() */ /*-------------------------------------------------------------------------- NAME H5S__all_is_valid PURPOSE Check whether the selection fits within the extent, with the current offset defined. USAGE htri_t H5S__all_is_valid(space); H5S_t *space; IN: Dataspace pointer to query RETURNS TRUE if the selection fits within the extent, FALSE if it does not and Negative on an error. DESCRIPTION Determines if the current selection at the current offset fits within the extent for the dataspace. Offset is irrelevant for this type of selection. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static htri_t H5S__all_is_valid(const H5S_t H5_ATTR_UNUSED *space) { FUNC_ENTER_STATIC_NOERR HDassert(space); FUNC_LEAVE_NOAPI(TRUE) } /* end H5S__all_is_valid() */ /*-------------------------------------------------------------------------- NAME H5S__all_serial_size PURPOSE Determine the number of bytes needed to store the serialized "all" selection information. USAGE hssize_t H5S__all_serial_size(space) H5S_t *space; IN: Dataspace pointer to query RETURNS The number of bytes required on success, negative on an error. DESCRIPTION Determines the number of bytes required to serialize an "all" selection for storage on disk. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static hssize_t H5S__all_serial_size(const H5S_t H5_ATTR_UNUSED *space) { FUNC_ENTER_STATIC_NOERR HDassert(space); /* Basic number of bytes required to serialize point selection: * <type (4 bytes)> + <version (4 bytes)> + <padding (4 bytes)> + * <length (4 bytes)> = 16 bytes */ FUNC_LEAVE_NOAPI(16) } /* end H5S__all_serial_size() */ /*-------------------------------------------------------------------------- NAME H5S__all_serialize PURPOSE Serialize the current selection into a user-provided buffer. USAGE herr_t H5S_all_serialize(space, p) const H5S_t *space; IN: Dataspace with selection to serialize uint8_t **p; OUT: Pointer to buffer to put serialized selection. Will be advanced to end of serialized selection. RETURNS Non-negative on success/Negative on failure DESCRIPTION Serializes the current element selection into a buffer. (Primarily for storing on disk). GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S__all_serialize(const H5S_t *space, uint8_t **p) { uint8_t *pp = (*p); /* Local pointer for decoding */ FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(space); HDassert(p); HDassert(pp); /* 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)0); /* Store the un-used padding */ UINT32ENCODE(pp, (uint32_t)0); /* Store the additional information length */ /* Update encoding pointer */ *p = pp; FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_serialize() */ /*-------------------------------------------------------------------------- NAME H5S__all_deserialize PURPOSE 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 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. RETURNS Non-negative on success/Negative on failure DESCRIPTION Deserializes the current selection into a buffer. (Primarily for retrieving from disk). GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES 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) { herr_t ret_value = SUCCEED; /* return value */ FUNC_ENTER_STATIC HDassert(space); HDassert(p); HDassert(*p); /* Change to "all" selection */ if(H5S_select_all(space, TRUE) < 0) HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5S__all_deserialize() */ /*-------------------------------------------------------------------------- NAME H5S__all_bounds PURPOSE Gets the bounding box containing the selection. USAGE herr_t H5S__all_bounds(space, start, end) H5S_t *space; IN: Dataspace pointer of selection to query hsize_t *start; OUT: Starting coordinate of bounding box hsize_t *end; OUT: Opposite coordinate of bounding box RETURNS Non-negative on success, negative on failure DESCRIPTION Retrieves the bounding box containing the current selection and places it into the user's buffers. The start and end buffers must be large enough to hold the dataspace rank number of coordinates. The bounding box exactly contains the selection, ie. if a 2-D element selection is currently defined with the following points: (4,5), (6,8) (10,7), the bounding box with be (4, 5), (10, 8). Calling this function on a "none" selection returns fail. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S__all_bounds(const H5S_t *space, hsize_t *start, hsize_t *end) { unsigned rank; /* Dataspace rank */ unsigned i; /* index variable */ FUNC_ENTER_STATIC_NOERR HDassert(space); HDassert(start); HDassert(end); /* Get the dataspace extent rank */ rank = space->extent.rank; /* Just copy over the complete extent */ for(i = 0; i < rank; i++) { start[i] = 0; end[i] = space->extent.size[i] - 1; } /* end for */ FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_bounds() */ /*-------------------------------------------------------------------------- NAME H5S__all_offset PURPOSE Gets the linear offset of the first element for the selection. USAGE herr_t H5S__all_offset(space, offset) const H5S_t *space; IN: Dataspace pointer of selection to query hsize_t *offset; OUT: Linear offset of first element in selection RETURNS Non-negative on success, negative on failure DESCRIPTION Retrieves the linear offset (in "units" of elements) of the first element selected within the dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS Calling this function on a "none" selection returns fail. EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S__all_offset(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset) { FUNC_ENTER_STATIC_NOERR HDassert(space); HDassert(offset); /* 'All' selections always start at offset 0 */ *offset = 0; FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_offset() */ /*-------------------------------------------------------------------------- NAME H5S__all_unlim_dim PURPOSE Return unlimited dimension of selection, or -1 if none USAGE int H5S__all_unlim_dim(space) H5S_t *space; IN: Dataspace pointer to check RETURNS Unlimited dimension of selection, or -1 if none (never fails). DESCRIPTION Returns the index of the unlimited dimension in this selection, or -1 if the selection has no unlimited dimension. "All" selections are always unlimited in every dimension, though this is not reflected in other calls, where the selection is "clipped" against the current extent, so for consistency this function always returns -1. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static int H5S__all_unlim_dim(const H5S_t H5_ATTR_UNUSED *space) { FUNC_ENTER_STATIC_NOERR FUNC_LEAVE_NOAPI(-1) } /* end H5S__all_unlim_dim() */ /*-------------------------------------------------------------------------- NAME H5S__all_is_contiguous PURPOSE Check if a "all" selection is contiguous within the dataspace extent. USAGE htri_t H5S__all_is_contiguous(space) H5S_t *space; IN: Dataspace pointer to check RETURNS TRUE/FALSE/FAIL DESCRIPTION Checks to see if the current selection in the dataspace is contiguous. This is primarily used for reading the entire selection in one swoop. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static htri_t H5S__all_is_contiguous(const H5S_t H5_ATTR_UNUSED *space) { FUNC_ENTER_STATIC_NOERR HDassert(space); FUNC_LEAVE_NOAPI(TRUE) } /* end H5S__all_is_contiguous() */ /*-------------------------------------------------------------------------- NAME H5S__all_is_single PURPOSE Check if a "all" selection is a single block within the dataspace extent. USAGE htri_t H5S__all_is_single(space) H5S_t *space; IN: Dataspace pointer to check RETURNS TRUE/FALSE/FAIL DESCRIPTION Checks to see if the current selection in the dataspace is a single block. This is primarily used for reading the entire selection in one swoop. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static htri_t H5S__all_is_single(const H5S_t H5_ATTR_UNUSED *space) { FUNC_ENTER_STATIC_NOERR HDassert(space); FUNC_LEAVE_NOAPI(TRUE) } /* end H5S__all_is_single() */ /*-------------------------------------------------------------------------- NAME H5S__all_is_regular PURPOSE Check if a "all" selection is "regular" USAGE htri_t H5S__all_is_regular(space) const H5S_t *space; IN: Dataspace pointer to check RETURNS TRUE/FALSE/FAIL DESCRIPTION Checks to see if the current selection in a dataspace is the a regular pattern. This is primarily used for reading the entire selection in one swoop. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static htri_t H5S__all_is_regular(const H5S_t H5_ATTR_UNUSED *space) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(space); FUNC_LEAVE_NOAPI(TRUE) } /* 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() */ /*-------------------------------------------------------------------------- NAME H5S__all_adjust_u PURPOSE Adjust an "all" selection by subtracting an offset USAGE herr_t H5S__all_adjust_u(space, offset) H5S_t *space; IN/OUT: Pointer to dataspace to adjust const hsize_t *offset; IN: Offset to subtract RETURNS Non-negative on success, negative on failure DESCRIPTION Moves selection by subtracting an offset from it. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S__all_adjust_u(H5S_t H5_ATTR_UNUSED *space, const hsize_t H5_ATTR_UNUSED *offset) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(space); HDassert(offset); FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_adjust_u() */ /*------------------------------------------------------------------------- * Function: H5S__all_project_scalar * * Purpose: Projects a single element 'all' selection into a scalar * dataspace * * Return: Non-negative on success, negative on failure. * * Programmer: Quincey Koziol * Sunday, July 18, 2010 * *------------------------------------------------------------------------- */ static herr_t H5S__all_project_scalar(const H5S_t H5_ATTR_UNUSED *space, hsize_t *offset) { FUNC_ENTER_STATIC_NOERR /* Check args */ HDassert(space && H5S_SEL_ALL == H5S_GET_SELECT_TYPE(space)); HDassert(offset); /* Set offset of selection in projected buffer */ *offset = 0; FUNC_LEAVE_NOAPI(SUCCEED) } /* end H5S__all_project_scalar() */ /*------------------------------------------------------------------------- * Function: H5S__all_project_simple * * Purpose: Projects an 'all' selection onto/into a simple dataspace * of a different rank * * Return: Non-negative on success, negative on failure. * * Programmer: Quincey Koziol * Sunday, July 18, 2010 * *------------------------------------------------------------------------- */ static herr_t 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 */ FUNC_ENTER_STATIC /* Check args */ HDassert(base_space && H5S_SEL_ALL == H5S_GET_SELECT_TYPE(base_space)); HDassert(new_space); HDassert(offset); /* Select the entire new space */ if(H5S_select_all(new_space, TRUE) < 0) HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, FAIL, "unable to set all selection") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5S__all_project_simple() */ /*-------------------------------------------------------------------------- NAME H5S_select_all PURPOSE Specify the the entire extent is selected USAGE herr_t H5S_select_all(dsid) hid_t dsid; IN: Dataspace ID of selection to modify hbool_t rel_prev; IN: Flag whether to release previous selection or not RETURNS Non-negative on success/Negative on failure DESCRIPTION This function selects the entire extent for a dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ herr_t H5S_select_all(H5S_t *space, hbool_t rel_prev) { herr_t ret_value = SUCCEED; /* return value */ FUNC_ENTER_NOAPI(FAIL) /* Check args */ HDassert(space); /* Remove current selection first */ if(rel_prev) if(H5S_SELECT_RELEASE(space) < 0) HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't release selection") /* Set number of elements in selection */ space->select.num_elem = (hsize_t)H5S_GET_EXTENT_NPOINTS(space); /* Set selection type */ space->select.type = H5S_sel_all; done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5S_select_all() */ /*-------------------------------------------------------------------------- NAME H5Sselect_all PURPOSE Specify the the entire extent is selected USAGE herr_t H5Sselect_all(dsid) hid_t dsid; IN: Dataspace ID of selection to modify RETURNS Non-negative on success/Negative on failure DESCRIPTION This function selects the entire extent for a dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ herr_t H5Sselect_all(hid_t spaceid) { H5S_t *space; /* Dataspace to modify selection of */ herr_t ret_value = SUCCEED; /* return value */ FUNC_ENTER_API(FAIL) H5TRACE1("e", "i", spaceid); /* Check args */ if(NULL == (space = (H5S_t *)H5I_object_verify(spaceid, H5I_DATASPACE))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace") /* Call internal routine to do the work */ if(H5S_select_all(space, TRUE) < 0) HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection") done: FUNC_LEAVE_API(ret_value) } /* end H5Sselect_all() */


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