summaryrefslogtreecommitdiffstats
path: root/src/H5Shyper.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/H5Shyper.c')
-rw-r--r--src/H5Shyper.c80
1 files changed, 52 insertions, 28 deletions
diff --git a/src/H5Shyper.c b/src/H5Shyper.c
index c97c9b6..02d9359 100644
--- a/src/H5Shyper.c
+++ b/src/H5Shyper.c
@@ -1994,7 +1994,7 @@ H5S_hyper_serial_size(const H5S_t *space)
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S_hyper_serialize_helper (const H5S_hyper_span_info_t *spans, hsize_t *start, hsize_t *end, hsize_t rank, uint8_t **buf)
+H5S_hyper_serialize_helper (const H5S_hyper_span_info_t *spans, hsize_t *start, hsize_t *end, hsize_t rank, uint8_t **p)
{
H5S_hyper_span_t *curr; /* Pointer to current hyperslab span */
hsize_t u; /* Index variable */
@@ -2007,7 +2007,7 @@ H5S_hyper_serialize_helper (const H5S_hyper_span_info_t *spans, hsize_t *start,
HDassert(start);
HDassert(end);
HDassert(rank < H5O_LAYOUT_NDIMS);
- HDassert(buf && *buf);
+ HDassert(p && *p);
/* Walk through the list of spans, recursing or outputing them */
curr=spans->head;
@@ -2019,7 +2019,7 @@ H5S_hyper_serialize_helper (const H5S_hyper_span_info_t *spans, hsize_t *start,
end[rank]=curr->high;
/* Recurse down to the next dimension */
- if(H5S_hyper_serialize_helper(curr->down,start,end,rank+1,buf)<0)
+ if(H5S_hyper_serialize_helper(curr->down,start,end,rank+1,p)<0)
HGOTO_ERROR(H5E_INTERNAL, H5E_CANTFREE, FAIL, "failed to release hyperslab spans")
} /* end if */
else {
@@ -2027,17 +2027,17 @@ H5S_hyper_serialize_helper (const H5S_hyper_span_info_t *spans, hsize_t *start,
/* Encode previous starting points */
for(u=0; u<rank; u++)
- UINT32ENCODE(*buf, (uint32_t)start[u]);
+ UINT32ENCODE(*p, (uint32_t)start[u]);
/* Encode starting point for this span */
- UINT32ENCODE(*buf, (uint32_t)curr->low);
+ UINT32ENCODE(*p, (uint32_t)curr->low);
/* Encode previous ending points */
for(u=0; u<rank; u++)
- UINT32ENCODE(*buf, (uint32_t)end[u]);
+ UINT32ENCODE(*p, (uint32_t)end[u]);
/* Encode starting point for this span */
- UINT32ENCODE(*buf, (uint32_t)curr->high);
+ UINT32ENCODE(*p, (uint32_t)curr->high);
} /* end else */
/* Advance to next node */
@@ -2069,7 +2069,7 @@ done:
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S_hyper_serialize (const H5S_t *space, uint8_t *buf)
+H5S_hyper_serialize (const H5S_t *space, uint8_t **p)
{
const H5S_hyper_dim_t *diminfo; /* Alias for dataspace's diminfo information */
hsize_t tmp_count[H5O_LAYOUT_NDIMS]; /* Temporary hyperslab counts */
@@ -2089,11 +2089,11 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t *buf)
HDassert(space);
/* Store the preamble information */
- UINT32ENCODE(buf, (uint32_t)H5S_GET_SELECT_TYPE(space)); /* Store the type of selection */
- UINT32ENCODE(buf, (uint32_t)1); /* Store the version number */
- UINT32ENCODE(buf, (uint32_t)0); /* Store the un-used padding */
- lenp = buf; /* keep the pointer to the length location for later */
- buf += 4; /* skip over space for length */
+ UINT32ENCODE(*p, (uint32_t)H5S_GET_SELECT_TYPE(space)); /* Store the type of selection */
+ UINT32ENCODE(*p, (uint32_t)1); /* Store the version number */
+ UINT32ENCODE(*p, (uint32_t)0); /* Store the un-used padding */
+ lenp = *p; /* keep the pointer to the length location for later */
+ *p += 4; /* skip over space for length */
/* Encode number of dimensions */
UINT32ENCODE(buf, (uint32_t)space->extent.rank);
@@ -2114,7 +2114,7 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t *buf)
/* Encode number of hyperslabs */
H5_CHECK_OVERFLOW(block_count, hsize_t, uint32_t);
- UINT32ENCODE(buf, (uint32_t)block_count);
+ UINT32ENCODE(*p, (uint32_t)block_count);
len+=4;
/* Now serialize the information for the regular hyperslab */
@@ -2137,11 +2137,11 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t *buf)
/* Encode hyperslab starting location */
for(u = 0; u < ndims; u++)
- UINT32ENCODE(buf, (uint32_t)offset[u]);
+ UINT32ENCODE(*p, (uint32_t)offset[u]);
/* Encode hyperslab ending location */
for(u = 0; u < ndims; u++)
- UINT32ENCODE(buf, (uint32_t)(offset[u] + (diminfo[u].block - 1)));
+ UINT32ENCODE(*p, (uint32_t)(offset[u] + (diminfo[u].block - 1)));
/* Move the offset to the next sequence to start */
offset[fast_dim]+=diminfo[fast_dim].stride;
@@ -2192,7 +2192,7 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t *buf)
/* Encode number of hyperslabs */
block_count = H5S_hyper_span_nblocks(space->select.sel_info.hslab->span_lst);
H5_CHECK_OVERFLOW(block_count, hsize_t, uint32_t);
- UINT32ENCODE(buf, (uint32_t)block_count);
+ UINT32ENCODE(*p, (uint32_t)block_count);
len+=4;
/* Add 8 bytes times the rank for each hyperslab selected */
@@ -2200,7 +2200,7 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t *buf)
len += (size_t)(8 * space->extent.rank * block_count);
/* Encode each hyperslab in selection */
- H5S_hyper_serialize_helper(space->select.sel_info.hslab->span_lst, start, end, (hsize_t)0, &buf);
+ H5S_hyper_serialize_helper(space->select.sel_info.hslab->span_lst, start, end, (hsize_t)0, p);
} /* end else */
/* Encode length */
@@ -2230,8 +2230,9 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t *buf)
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S_hyper_deserialize (H5S_t *space, const uint8_t *buf)
+H5S_hyper_deserialize (H5S_t **space, const uint8_t **p)
{
+ H5S_t *tmp_space;
uint32_t rank; /* rank of points */
size_t num_elem=0; /* number of elements in selection */
hsize_t start[H5O_LAYOUT_NDIMS]; /* hyperslab start information */
@@ -2251,14 +2252,29 @@ H5S_hyper_deserialize (H5S_t *space, const uint8_t *buf)
/* Check args */
HDassert(space);
- HDassert(buf);
+ HDassert(p);
+ HDassert(*p);
/* Deserialize slabs to select */
- buf+=16; /* Skip over selection header */
- UINT32DECODE(buf,rank); /* decode the rank of the point selection */
- if(rank!=space->extent.rank)
- HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "rank of pointer does not match dataspace")
- UINT32DECODE(buf,num_elem); /* decode the number of points */
+ *p+=12; /* Skip over remainder of selection header */
+ UINT32DECODE(*p,rank); /* decode the rank of the point selection */
+ UINT32DECODE(*p,num_elem); /* decode the number of points */
+
+ /* 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")
+
+ /* Set rank of dataspace */
+ tmp_space->extent.rank = rank;
+ } /* end if */
+ else {
+ tmp_space = *space;
+
+ /* Verify rank of dataspace */
+ if(rank!=tmp_space->extent.rank)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "rank of pointer does not match dataspace")
+ } /* end else */
/* Set the count & stride for all blocks */
for(tcount=count,tstride=stride,j=0; j<rank; j++,tstride++,tcount++) {
@@ -2270,22 +2286,30 @@ H5S_hyper_deserialize (H5S_t *space, const uint8_t *buf)
for(i=0; i<num_elem; i++) {
/* Decode the starting points */
for(tstart=start,j=0; j<rank; j++,tstart++)
- UINT32DECODE(buf, *tstart);
+ UINT32DECODE(*p, *tstart);
/* Decode the ending points */
for(tend=end,j=0; j<rank; j++,tend++)
- UINT32DECODE(buf, *tend);
+ UINT32DECODE(*p, *tend);
/* Change the ending points into blocks */
for(tblock=block,tstart=start,tend=end,j=0; j<(unsigned)rank; j++,tstart++,tend++,tblock++)
*tblock=(*tend-*tstart)+1;
/* Select or add the hyperslab to the current selection */
- if((ret_value=H5S_select_hyperslab(space,(i==0 ? H5S_SELECT_SET : H5S_SELECT_OR),start,stride,count,block))<0)
+ if((ret_value=H5S_select_hyperslab(tmp_space,(i==0 ? H5S_SELECT_SET : H5S_SELECT_OR),start,stride,count,block))<0)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection")
} /* end for */
+ 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_hyper_deserialize() */
generated by cgit v0.12 at 2024-11-17 02:28:44 (GMT)