/* * Copyright (C) 1998-2001 NCSA * All rights reserved. * * Programmer: Quincey Koziol * Friday, May 29, 1998 * * Purpose: Dataspace functions. */ #define H5S_PACKAGE /*suppress error about including H5Spkg */ #include "H5private.h" #include "H5Eprivate.h" #include "H5FLprivate.h" /*Free Lists */ #include "H5Iprivate.h" #include "H5MMprivate.h" #include "H5Spkg.h" #include "H5Vprivate.h" /* Interface initialization */ #define PABLO_MASK H5Sselect_mask #define INTERFACE_INIT NULL static int interface_initialize_g = 0; static hssize_t H5S_get_select_hyper_nblocks(H5S_t *space); static hssize_t H5S_get_select_elem_npoints(H5S_t *space); static herr_t H5S_get_select_hyper_blocklist(H5S_t *space, hsize_t startblock, hsize_t numblocks, hsize_t *buf); static herr_t H5S_get_select_elem_pointlist(H5S_t *space, hsize_t startpoint, hsize_t numpoints, hsize_t *buf); static herr_t H5S_get_select_bounds(H5S_t *space, hsize_t *start, hsize_t *end); /* Declare external the free list for hssize_t arrays */ H5FL_ARR_EXTERN(hssize_t); /*-------------------------------------------------------------------------- NAME H5S_select_copy PURPOSE Copy a selection from one dataspace to another USAGE herr_t H5S_select_copy(dst, src) H5S_t *dst; OUT: Pointer to the destination dataspace H5S_t *src; IN: Pointer to the source dataspace RETURNS Non-negative on success/Negative on failure DESCRIPTION Copies all the selection information (include offset) from the source dataspace to the destination dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ herr_t H5S_select_copy (H5S_t *dst, const H5S_t *src) { herr_t ret_value=SUCCEED; /* return value */ FUNC_ENTER (H5S_select_copy, FAIL); /* Check args */ assert(dst); assert(src); /* Copy regular fields */ dst->select=src->select; /* Need to copy order information still */ /* Copy offset information */ if (NULL==(dst->select.offset = H5FL_ARR_ALLOC(hssize_t,src->extent.u.simple.rank,1))) { HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed"); } if(src->select.offset!=NULL) HDmemcpy(dst->select.offset,src->select.offset,(src->extent.u.simple.rank*sizeof(hssize_t))); /* Perform correct type of copy based on the type of selection */ switch (src->extent.type) { case H5S_SCALAR: /*nothing needed */ break; case H5S_SIMPLE: /* Deep copy extra stuff */ switch(src->select.type) { case H5S_SEL_NONE: case H5S_SEL_ALL: /*nothing needed */ break; case H5S_SEL_POINTS: ret_value=H5S_point_copy(dst,src); break; case H5S_SEL_HYPERSLABS: ret_value=H5S_hyper_copy(dst,src); break; default: assert("unknown selection type" && 0); break; } /* end switch */ break; case H5S_COMPLEX: /*void */ break; default: assert("unknown data space type" && 0); break; } FUNC_LEAVE (ret_value); } /* H5S_select_copy() */ /*-------------------------------------------------------------------------- NAME H5S_select_release PURPOSE Release selection information for a dataspace USAGE herr_t H5S_select_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 --------------------------------------------------------------------------*/ herr_t H5S_select_release (H5S_t *space) { herr_t ret_value=SUCCEED; /* return value */ FUNC_ENTER (H5S_select_release, FAIL); /* Check args */ assert (space); switch(space->select.type) { case H5S_SEL_POINTS: /* Sequence of points selected */ ret_value=H5S_point_release(space); break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_release(space); break; case H5S_SEL_ALL: /* Entire extent selected */ ret_value=H5S_all_release(space); break; case H5S_SEL_NONE: /* Nothing selected */ break; case H5S_SEL_ERROR: case H5S_SEL_N: break; } /* Reset type of selection to "all" */ space->select.type=H5S_SEL_ALL; FUNC_LEAVE (ret_value); } /* H5S_select_release() */ /*-------------------------------------------------------------------------- NAME H5Sget_select_npoints PURPOSE Get the number of elements in current selection USAGE hssize_t H5Sget_select_npoints(dsid) hid_t dsid; IN: Dataspace ID of selection to query RETURNS The number of elements in selection on success, 0 on failure DESCRIPTION Returns the number of elements in current selection for dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ hssize_t H5Sget_select_npoints(hid_t spaceid) { H5S_t *space = NULL; /* Dataspace to modify selection of */ hssize_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5Sget_select_npoints, 0); H5TRACE1("Hs","i",spaceid); /* Check args */ if (H5I_DATASPACE != H5I_get_type(spaceid) || NULL == (space=H5I_object(spaceid))) { HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "not a data space"); } ret_value = H5S_get_select_npoints(space); FUNC_LEAVE (ret_value); } /* H5Sget_select_npoints() */ /*-------------------------------------------------------------------------- NAME H5S_get_select_npoints PURPOSE Get the number of elements in current selection USAGE herr_t H5S_get_select_npoints(ds) H5S_t *ds; IN: Dataspace pointer RETURNS The number of elements in selection on success, 0 on failure DESCRIPTION Returns the number of elements in current selection for dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ hssize_t H5S_get_select_npoints (const H5S_t *space) { hssize_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5S_get_select_npoints, FAIL); assert(space); switch(space->select.type) { case H5S_SEL_POINTS: /* Sequence of points selected */ ret_value=H5S_point_npoints(space); break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_npoints(space); break; case H5S_SEL_ALL: /* Entire extent selected */ ret_value=H5S_all_npoints(space); break; case H5S_SEL_NONE: /* Nothing selected */ ret_value=0; break; case H5S_SEL_ERROR: case H5S_SEL_N: break; } FUNC_LEAVE (ret_value); } /* H5S_get_select_npoints() */ /*-------------------------------------------------------------------------- NAME H5S_sel_iter_release PURPOSE Release selection iterator information for a dataspace USAGE herr_t H5S_sel_iter_release(sel_iter) const H5S_t *space; IN: Pointer to dataspace iterator is for H5S_sel_iter_t *sel_iter; IN: Pointer to selection iterator RETURNS Non-negative on success/Negative on failure DESCRIPTION Releases all information for a dataspace selection iterator GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ herr_t H5S_sel_iter_release (const H5S_t *space, H5S_sel_iter_t *sel_iter) { herr_t ret_value=SUCCEED; /* Return value */ FUNC_ENTER (H5S_sel_iter_release, FAIL); /* Check args */ assert (sel_iter); switch(space->select.type) { case H5S_SEL_POINTS: /* Sequence of points selected */ case H5S_SEL_ALL: /* Entire extent selected */ /* no action needed */ ret_value=SUCCEED; break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_sel_iter_release(sel_iter); break; case H5S_SEL_NONE: /* Nothing selected */ break; case H5S_SEL_ERROR: case H5S_SEL_N: break; } FUNC_LEAVE (ret_value); } /* H5S_sel_iter_release() */ /*-------------------------------------------------------------------------- NAME H5Sselect_valid PURPOSE Check whether the selection fits within the extent, with the current offset defined. USAGE htri_t H5Sselect_void(dsid) hid_t dsid; IN: Dataspace ID 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 offet fits within the extent for the dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ htri_t H5Sselect_valid(hid_t spaceid) { H5S_t *space = NULL; /* Dataspace to modify selection of */ htri_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5Sselect_valid, 0); H5TRACE1("b","i",spaceid); /* Check args */ if (H5I_DATASPACE != H5I_get_type(spaceid) || NULL == (space=H5I_object(spaceid))) { HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "not a data space"); } ret_value = H5S_select_valid(space); FUNC_LEAVE (ret_value); } /* H5Sselect_valid() */ /*-------------------------------------------------------------------------- NAME H5S_select_valid PURPOSE Check whether the selection fits within the extent, with the current offset defined. USAGE htri_t H5Sselect_void(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 offet fits within the extent for the dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ htri_t H5S_select_valid (const H5S_t *space) { htri_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5S_select_valid, FAIL); assert(space); switch(space->select.type) { case H5S_SEL_POINTS: /* Sequence of points selected */ ret_value=H5S_point_select_valid(space); break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_select_valid(space); break; case H5S_SEL_ALL: /* Entire extent selected */ case H5S_SEL_NONE: /* Nothing selected */ ret_value=TRUE; break; case H5S_SEL_ERROR: case H5S_SEL_N: break; } FUNC_LEAVE (ret_value); } /* H5S_select_valid() */ /*-------------------------------------------------------------------------- NAME H5S_select_serial_size PURPOSE Determine the number of bytes needed to serialize the current selection offset defined. USAGE hssize_t H5S_select_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 the current selection information for storage on disk. This routine just hands off to the appropriate routine for each type of selection. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ hssize_t H5S_select_serial_size (const H5S_t *space) { hssize_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5S_select_serial_size, FAIL); assert(space); switch(space->select.type) { case H5S_SEL_POINTS: /* Sequence of points selected */ ret_value=H5S_point_select_serial_size(space); break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_select_serial_size(space); break; case H5S_SEL_ALL: /* Entire extent selected */ case H5S_SEL_NONE: /* Nothing selected */ ret_value=16; /* replace with real function call at some point */ break; case H5S_SEL_ERROR: case H5S_SEL_N: break; } FUNC_LEAVE (ret_value); } /* H5S_select_serial_size() */ /*-------------------------------------------------------------------------- NAME H5S_select_serialize PURPOSE Serialize the current selection into a user-provided buffer. USAGE herr_t H5S_select_serialize(space, buf) H5S_t *space; IN: Dataspace pointer of selection to serialize uint8 *buf; OUT: Buffer to put serialized selection into RETURNS Non-negative on success/Negative on failure DESCRIPTION Serializes the current selection into a buffer. (Primarily for storing on disk). This routine just hands off to the appropriate routine for each type of selection. The serialized information for all types of selections follows this format: = uint32 = uint32 = 4 bytes = uint32 = ? bytes (depends on selection type) GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ herr_t H5S_select_serialize (const H5S_t *space, uint8_t *buf) { herr_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5S_select_serialize, FAIL); assert(space); switch(space->select.type) { case H5S_SEL_POINTS: /* Sequence of points selected */ ret_value=H5S_point_select_serialize(space,buf); break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_select_serialize(space,buf); break; case H5S_SEL_ALL: /* Entire extent selected */ ret_value=H5S_all_select_serialize(space,buf); break; case H5S_SEL_NONE: /* Nothing selected */ ret_value=H5S_none_select_serialize(space,buf); break; case H5S_SEL_ERROR: case H5S_SEL_N: break; } FUNC_LEAVE (ret_value); } /* H5S_select_serialize() */ /*-------------------------------------------------------------------------- NAME H5S_select_deserialize PURPOSE Deserialize the current selection from a user-provided buffer into a real selection in the dataspace. USAGE herr_t H5S_select_deserialize(space, buf) H5S_t *space; IN/OUT: Dataspace pointer to place selection into uint8 *buf; IN: Buffer to retrieve serialized selection from RETURNS Non-negative on success/Negative on failure DESCRIPTION Deserializes the current selection into a buffer. (Primarily for retrieving from disk). This routine just hands off to the appropriate routine for each type of selection. The format of the serialized information is shown in the H5S_select_serialize() header. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ herr_t H5S_select_deserialize (H5S_t *space, const uint8_t *buf) { const uint8_t *tbuf; /* Temporary pointer to the selection type */ uint32_t sel_type; /* Pointer to the selection type */ herr_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5S_select_deserialize, FAIL); assert(space); tbuf=buf; UINT32DECODE(tbuf, sel_type); switch(sel_type) { case H5S_SEL_POINTS: /* Sequence of points selected */ ret_value=H5S_point_select_deserialize(space,buf); break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_select_deserialize(space,buf); break; case H5S_SEL_ALL: /* Entire extent selected */ ret_value=H5S_all_select_deserialize(space,buf); break; case H5S_SEL_NONE: /* Nothing selected */ ret_value=H5S_none_select_deserialize(space,buf); break; default: break; } FUNC_LEAVE (ret_value); } /* H5S_select_deserialize() */ /*-------------------------------------------------------------------------- NAME H5S_get_select_hyper_nblocks PURPOSE Get the number of hyperslab blocks in current hyperslab selection USAGE hssize_t H5S_get_select_hyper_nblocks(space) H5S_t *space; IN: Dataspace ptr of selection to query RETURNS The number of hyperslab blocks in selection on success, negative on failure DESCRIPTION Returns the number of hyperslab blocks in current selection for dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static hssize_t H5S_get_select_hyper_nblocks(H5S_t *space) { hssize_t ret_value=FAIL; /* return value */ unsigned u; /* Counter */ FUNC_ENTER (H5S_get_select_hyper_nblocks, FAIL); assert(space); /* Check for a "regular" hyperslab selection */ if(space->select.sel_info.hslab.diminfo != NULL) { /* Check each dimension */ for(ret_value=1,u=0; uextent.u.simple.rank; u++) ret_value*=space->select.sel_info.hslab.app_diminfo[u].count; } /* end if */ else ret_value = H5S_hyper_span_nblocks(space->select.sel_info.hslab.span_lst); FUNC_LEAVE (ret_value); } /* H5S_get_select_hyper_nblocks() */ /*-------------------------------------------------------------------------- NAME H5Sget_select_hyper_nblocks PURPOSE Get the number of hyperslab blocks in current hyperslab selection USAGE hssize_t H5Sget_select_hyper_nblocks(dsid) hid_t dsid; IN: Dataspace ID of selection to query RETURNS The number of hyperslab blocks in selection on success, negative on failure DESCRIPTION Returns the number of hyperslab blocks in current selection for dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ hssize_t H5Sget_select_hyper_nblocks(hid_t spaceid) { H5S_t *space = NULL; /* Dataspace to modify selection of */ hssize_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5Sget_select_hyper_nblocks, FAIL); H5TRACE1("Hs","i",spaceid); /* Check args */ if (H5I_DATASPACE != H5I_get_type(spaceid) || NULL == (space=H5I_object(spaceid))) { HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space"); } if(space->select.type!=H5S_SEL_HYPERSLABS) HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a hyperslab selection"); ret_value = H5S_get_select_hyper_nblocks(space); FUNC_LEAVE (ret_value); } /* H5Sget_select_hyper_nblocks() */ /*-------------------------------------------------------------------------- NAME H5S_get_select_elem_npoints PURPOSE Get the number of points in current element selection USAGE hssize_t H5S_get_select_elem_npoints(space) H5S_t *space; IN: Dataspace ptr of selection to query RETURNS The number of element points in selection on success, negative on failure DESCRIPTION Returns the number of element points in current selection for dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static hssize_t H5S_get_select_elem_npoints(H5S_t *space) { hssize_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5S_get_select_elem_npoints, FAIL); assert(space); ret_value = space->select.num_elem; FUNC_LEAVE (ret_value); } /* H5Sget_select_elem_npoints() */ /*-------------------------------------------------------------------------- NAME H5Sget_select_elem_npoints PURPOSE Get the number of points in current element selection USAGE hssize_t H5Sget_select_elem_npoints(dsid) hid_t dsid; IN: Dataspace ID of selection to query RETURNS The number of element points in selection on success, negative on failure DESCRIPTION Returns the number of element points in current selection for dataspace. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ hssize_t H5Sget_select_elem_npoints(hid_t spaceid) { H5S_t *space = NULL; /* Dataspace to modify selection of */ hssize_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5Sget_select_elem_npoints, FAIL); H5TRACE1("Hs","i",spaceid); /* Check args */ if (H5I_DATASPACE != H5I_get_type(spaceid) || NULL == (space=H5I_object(spaceid))) { HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space"); } if(space->select.type!=H5S_SEL_POINTS) HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an element selection"); ret_value = H5S_get_select_elem_npoints(space); FUNC_LEAVE (ret_value); } /* H5Sget_select_elem_npoints() */ /*-------------------------------------------------------------------------- NAME H5S_get_select_hyper_blocklist PURPOSE Get the list of hyperslab blocks currently selected USAGE herr_t H5S_get_select_hyper_blocklist(space, startblock, numblocks, buf) H5S_t *space; IN: Dataspace pointer of selection to query hsize_t startblock; IN: Hyperslab block to start with hsize_t numblocks; IN: Number of hyperslab blocks to get hsize_t *buf; OUT: List of hyperslab blocks selected RETURNS Non-negative on success, negative on failure DESCRIPTION Puts a list of the hyperslab blocks into the user's buffer. The blocks start with the 'startblock'th block in the list of blocks and put 'numblocks' number of blocks into the user's buffer (or until the end of the list of blocks, whichever happens first) The block coordinates have the same dimensionality (rank) as the dataspace they are located within. The list of blocks is formatted as follows: <"start" coordinate> immediately followed by <"opposite" corner coordinate>, followed by the next "start" and "opposite" coordinate, etc. until all the block information requested has been put into the user's buffer. No guarantee of any order of the blocks is implied. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S_get_select_hyper_blocklist(H5S_t *space, hsize_t startblock, hsize_t numblocks, hsize_t *buf) { H5S_hyper_dim_t *diminfo; /* Alias for dataspace's diminfo information */ hsize_t tmp_count[H5O_LAYOUT_NDIMS]; /* Temporary hyperslab counts */ hssize_t offset[H5O_LAYOUT_NDIMS]; /* Offset of element in dataspace */ hssize_t start[H5O_LAYOUT_NDIMS]; /* Location of start of hyperslab */ hssize_t end[H5O_LAYOUT_NDIMS]; /* Location of end of hyperslab */ hssize_t temp_off; /* Offset in a given dimension */ int i; /* Counter */ int fast_dim; /* Rank of the fastest changing dimension for the dataspace */ int temp_dim; /* Temporary rank holder */ int ndims; /* Rank of the dataspace */ int done; /* Whether we are done with the iteration */ herr_t ret_value=SUCCEED; /* return value */ FUNC_ENTER (H5S_get_select_hyper_blocklist, FAIL); assert(space); assert(buf); /* Check for a "regular" hyperslab selection */ if(space->select.sel_info.hslab.diminfo != NULL) { /* Set some convienence values */ ndims=space->extent.u.simple.rank; fast_dim=ndims-1; /* * Use the "application dimension information" to pass back to the user * the blocks they set, not the optimized, internal information. */ diminfo=space->select.sel_info.hslab.app_diminfo; /* Build the tables of count sizes as well as the initial offset */ for(i=0; i0) { /* Iterate over the blocks in the fastest dimension */ while(tmp_count[fast_dim]>0 && numblocks>0) { /* Check if we should copy this block information */ if(startblock==0) { /* Copy the starting location */ HDmemcpy(buf,offset,sizeof(hsize_t)*ndims); buf+=ndims; /* Compute the ending location */ HDmemcpy(buf,offset,sizeof(hsize_t)*ndims); for(i=0; i0 && numblocks>0) { /* Reset the block counts */ tmp_count[fast_dim]=diminfo[fast_dim].count; /* Bubble up the decrement to the slower changing dimensions */ temp_dim=fast_dim-1; while(temp_dim>=0 && done==0) { /* Decrement the block count */ tmp_count[temp_dim]--; /* Check if we have more blocks left */ if(tmp_count[temp_dim]>0) break; /* Check for getting out of iterator */ if(temp_dim==0) done=1; /* Reset the block count in this dimension */ tmp_count[temp_dim]=diminfo[temp_dim].count; /* Wrapped a dimension, go up to next dimension */ temp_dim--; } /* end while */ } /* end if */ /* Re-compute offset array */ for(i=0; iselect.sel_info.hslab.span_lst,start,end,(hsize_t)0,&startblock,&numblocks,&buf); } /* end else */ FUNC_LEAVE (ret_value); } /* H5S_get_select_hyper_blocklist() */ /*-------------------------------------------------------------------------- NAME H5Sget_select_hyper_blocklist PURPOSE Get the list of hyperslab blocks currently selected USAGE herr_t H5Sget_select_hyper_blocklist(dsid, startblock, numblocks, buf) hid_t dsid; IN: Dataspace ID of selection to query hsize_t startblock; IN: Hyperslab block to start with hsize_t numblocks; IN: Number of hyperslab blocks to get hsize_t *buf; OUT: List of hyperslab blocks selected RETURNS Non-negative on success, negative on failure DESCRIPTION Puts a list of the hyperslab blocks into the user's buffer. The blocks start with the 'startblock'th block in the list of blocks and put 'numblocks' number of blocks into the user's buffer (or until the end of the list of blocks, whichever happen first) The block coordinates have the same dimensionality (rank) as the dataspace they are located within. The list of blocks is formatted as follows: <"start" coordinate> immediately followed by <"opposite" corner coordinate>, followed by the next "start" and "opposite" coordinate, etc. until all the block information requested has been put into the user's buffer. No guarantee of any order of the blocks is implied. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ herr_t H5Sget_select_hyper_blocklist(hid_t spaceid, hsize_t startblock, hsize_t numblocks, hsize_t *buf) { H5S_t *space = NULL; /* Dataspace to modify selection of */ herr_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5Sget_select_hyper_blocklist, FAIL); H5TRACE4("e","ihh*h",spaceid,startblock,numblocks,buf); /* Check args */ if(buf==NULL) HRETURN_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid pointer"); if (H5I_DATASPACE != H5I_get_type(spaceid) || NULL == (space=H5I_object(spaceid))) { HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space"); } if(space->select.type!=H5S_SEL_HYPERSLABS) HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a hyperslab selection"); /* Go get the correct number of blocks */ if(numblocks>0) ret_value = H5S_get_select_hyper_blocklist(space,startblock,numblocks,buf); else ret_value=SUCCEED; /* Successfully got 0 blocks... */ FUNC_LEAVE (ret_value); } /* H5Sget_select_hyper_blocklist() */ /*-------------------------------------------------------------------------- NAME H5S_get_select_elem_pointlist PURPOSE Get the list of element points currently selected USAGE herr_t H5S_get_select_elem_pointlist(space, hsize_t *buf) H5S_t *space; IN: Dataspace pointer of selection to query hsize_t startpoint; IN: Element point to start with hsize_t numpoints; IN: Number of element points to get hsize_t *buf; OUT: List of element points selected RETURNS Non-negative on success, negative on failure DESCRIPTION Puts a list of the element points into the user's buffer. The points start with the 'startpoint'th block in the list of points and put 'numpoints' number of points into the user's buffer (or until the end of the list of points, whichever happen first) The point coordinates have the same dimensionality (rank) as the dataspace they are located within. The list of points is formatted as follows: followed by the next coordinate, etc. until all the point information in the selection have been put into the user's buffer. The points are returned in the order they will be interated through when a selection is read/written from/to disk. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S_get_select_elem_pointlist(H5S_t *space, hsize_t startpoint, hsize_t numpoints, hsize_t *buf) { H5S_pnt_node_t *node; /* Point node */ int rank; /* Dataspace rank */ herr_t ret_value=SUCCEED; /* return value */ FUNC_ENTER (H5S_get_select_elem_pointlist, FAIL); assert(space); assert(buf); /* Get the dataspace extent rank */ rank=space->extent.u.simple.rank; /* Get the head of the point list */ node=space->select.sel_info.pnt_lst->head; /* Iterate to the first point to return */ while(node!=NULL && startpoint>0) { startpoint--; node=node->next; } /* end while */ /* Iterate through the node, copying each hyperslab's information */ while(node!=NULL && numpoints>0) { HDmemcpy(buf,node->pnt,sizeof(hsize_t)*rank); buf+=rank; numpoints--; node=node->next; } /* end while */ FUNC_LEAVE (ret_value); } /* H5Sget_select_elem_pointlist() */ /*-------------------------------------------------------------------------- NAME H5Sget_select_elem_pointlist PURPOSE Get the list of element points currently selected USAGE herr_t H5Sget_select_elem_pointlist(dsid, hsize_t *buf) hid_t dsid; IN: Dataspace ID of selection to query hsize_t startpoint; IN: Element point to start with hsize_t numpoints; IN: Number of element points to get hsize_t *buf; OUT: List of element points selected RETURNS Non-negative on success, negative on failure DESCRIPTION Puts a list of the element points into the user's buffer. The points start with the 'startpoint'th block in the list of points and put 'numpoints' number of points into the user's buffer (or until the end of the list of points, whichever happen first) The point coordinates have the same dimensionality (rank) as the dataspace they are located within. The list of points is formatted as follows: followed by the next coordinate, etc. until all the point information in the selection have been put into the user's buffer. The points are returned in the order they will be interated through when a selection is read/written from/to disk. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ herr_t H5Sget_select_elem_pointlist(hid_t spaceid, hsize_t startpoint, hsize_t numpoints, hsize_t *buf) { H5S_t *space = NULL; /* Dataspace to modify selection of */ herr_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5Sget_select_elem_pointlist, FAIL); H5TRACE4("e","ihh*h",spaceid,startpoint,numpoints,buf); /* Check args */ if(buf==NULL) HRETURN_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid pointer"); if (H5I_DATASPACE != H5I_get_type(spaceid) || NULL == (space=H5I_object(spaceid))) { HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space"); } if(space->select.type!=H5S_SEL_POINTS) HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a point selection"); ret_value = H5S_get_select_elem_pointlist(space,startpoint,numpoints,buf); FUNC_LEAVE (ret_value); } /* H5Sget_select_elem_pointlist() */ /*-------------------------------------------------------------------------- NAME H5S_get_select_bounds PURPOSE Gets the bounding box containing the selection. USAGE herr_t H5S_get_select_bounds(space, hsize_t *start, hsize_t *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. The bounding box calculations _does_ include the current offset of the selection within the dataspace extent. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ static herr_t H5S_get_select_bounds(H5S_t *space, hsize_t *start, hsize_t *end) { int rank; /* Dataspace rank */ int i; /* index variable */ herr_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5S_get_select_bounds, FAIL); assert(space); assert(start); assert(end); /* Set the start and end arrays up */ rank=space->extent.u.simple.rank; for(i=0; iselect.type) { case H5S_SEL_POINTS: /* Sequence of points selected */ ret_value=H5S_point_bounds(space,start,end); break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_bounds(space,start,end); break; case H5S_SEL_ALL: /* Entire extent selected */ ret_value=H5S_all_bounds(space,start,end); break; case H5S_SEL_NONE: /* Nothing selected */ case H5S_SEL_ERROR: case H5S_SEL_N: break; } FUNC_LEAVE (ret_value); } /* H5S_get_select_bounds() */ /*-------------------------------------------------------------------------- NAME H5Sget_select_bounds PURPOSE Gets the bounding box containing the selection. USAGE herr_t H5S_get_select_bounds(space, start, end) hid_t dsid; IN: Dataspace ID 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. The bounding box calculations _does_ include the current offset of the selection within the dataspace extent. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ herr_t H5Sget_select_bounds(hid_t spaceid, hsize_t *start, hsize_t *end) { H5S_t *space = NULL; /* Dataspace to modify selection of */ herr_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5Sget_select_bounds, FAIL); H5TRACE3("e","i*h*h",spaceid,start,end); /* Check args */ if(start==NULL || end==NULL) HRETURN_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid pointer"); if (H5I_DATASPACE != H5I_get_type(spaceid) || NULL == (space=H5I_object(spaceid))) { HRETURN_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data space"); } ret_value = H5S_get_select_bounds(space,start,end); FUNC_LEAVE (ret_value); } /* H5Sget_select_bounds() */ /*-------------------------------------------------------------------------- NAME H5S_select_contiguous PURPOSE Check if the selection is contiguous within the dataspace extent. USAGE htri_t H5S_select_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 --------------------------------------------------------------------------*/ htri_t H5S_select_contiguous(const H5S_t *space) { htri_t ret_value=FAIL; /* return value */ FUNC_ENTER (H5S_select_contiguous, FAIL); assert(space); switch(space->select.type) { case H5S_SEL_POINTS: /* Sequence of points selected */ ret_value=H5S_point_select_contiguous(space); break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_select_contiguous(space); break; case H5S_SEL_ALL: /* Entire extent selected */ ret_value=TRUE; break; case H5S_SEL_NONE: /* Nothing selected */ ret_value=FALSE; break; case H5S_SEL_ERROR: case H5S_SEL_N: break; } FUNC_LEAVE (ret_value); } /* H5S_select_contiguous() */ /*-------------------------------------------------------------------------- NAME H5S_iterate PURPOSE Iterate over the selected elements in a memory buffer. USAGE herr_t H5S_select_iterate(buf, type_id, space, operator, operator_data) void *buf; IN/OUT: Buffer containing elements to iterate over hid_t type_id; IN: Datatype ID of BUF array. H5S_t *space; IN: Dataspace object containing selection to iterate over H5D_operator_t op; IN: Function pointer to the routine to be called for each element in BUF iterated over. void *operator_data; IN/OUT: Pointer to any user-defined data associated with the operation. RETURNS Returns the return value of the last operator if it was non-zero, or zero if all elements were processed. Otherwise returns a negative value. DESCRIPTION Iterates over the selected elements in a memory buffer, calling the user's callback function for each element. The selection in the dataspace is modified so that any elements already iterated over are removed from the selection if the iteration is interrupted (by the H5D_operator_t function returning non-zero) in the "middle" of the iteration and may be re-started by the user where it left off. NOTE: Until "subtracting" elements from a selection is implemented, the selection is not modified. --------------------------------------------------------------------------*/ herr_t H5S_select_iterate(void *buf, hid_t type_id, H5S_t *space, H5D_operator_t op, void *operator_data) { herr_t ret_value=FAIL; FUNC_ENTER(H5S_select_iterate, FAIL); /* Check args */ assert(buf); assert(space); assert(op); assert(H5I_DATATYPE == H5I_get_type(type_id)); switch(space->select.type) { case H5S_SEL_POINTS: /* Sequence of points selected */ ret_value=H5S_point_select_iterate(buf,type_id,space,op,operator_data); break; case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */ ret_value=H5S_hyper_select_iterate(buf,type_id,space,op,operator_data); break; case H5S_SEL_ALL: /* Entire extent selected */ ret_value=H5S_all_select_iterate(buf,type_id,space,op,operator_data); break; case H5S_SEL_NONE: /* Nothing selected */ ret_value=H5S_none_select_iterate(buf,type_id,space,op,operator_data); break; case H5S_SEL_ERROR: case H5S_SEL_N: break; } FUNC_LEAVE(ret_value); } /* end H5S_select_iterate() */ /*-------------------------------------------------------------------------- NAME H5Sget_select_type PURPOSE Retrieve the type of selection in a dataspace USAGE H5S_sel_type H5Sget_select_type(space_id) hid_t space_id; IN: Dataspace object to reset RETURNS Non-negative on success/Negative on failure. Return value is from the set of values in the H5S_sel_type enumerated type. DESCRIPTION This function retrieves the type of selection currently defined for a dataspace. --------------------------------------------------------------------------*/ H5S_sel_type H5Sget_select_type(hid_t space_id) { H5S_t *space = NULL; /* dataspace to modify */ FUNC_ENTER(H5Sget_select_type, H5S_SEL_ERROR); H5TRACE1("St","i",space_id); /* Check args */ if (H5I_DATASPACE != H5I_get_type(space_id) || NULL == (space = H5I_object(space_id))) HRETURN_ERROR(H5E_ATOM, H5E_BADATOM, H5S_SEL_ERROR, "not a data space"); FUNC_LEAVE(space->select.type); } /* end H5Sget_select_type() */