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-rw-r--r--src/H5Shyper.c84
1 files changed, 64 insertions, 20 deletions
diff --git a/src/H5Shyper.c b/src/H5Shyper.c
index 4cb5e28..0146bfd 100644
--- a/src/H5Shyper.c
+++ b/src/H5Shyper.c
@@ -95,8 +95,7 @@ static herr_t H5S__hyper_release(H5S_t *space);
static htri_t H5S__hyper_is_valid(const H5S_t *space);
static hssize_t H5S__hyper_serial_size(const H5S_t *space);
static herr_t H5S__hyper_serialize(const H5S_t *space, uint8_t **p);
-static herr_t H5S__hyper_deserialize(H5S_t *space, uint32_t version, uint8_t flags,
- const uint8_t **p);
+static herr_t H5S__hyper_deserialize(H5S_t **space, const uint8_t **p);
static herr_t H5S__hyper_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
static herr_t H5S__hyper_offset(const H5S_t *space, hsize_t *offset);
static int H5S__hyper_unlim_dim(const H5S_t *space);
@@ -3456,7 +3455,7 @@ H5S__hyper_serialize_helper(const H5S_hyper_span_info_t *spans,
static herr_t
H5S__hyper_serialize(const H5S_t *space, uint8_t **p)
{
- uint8_t *pp; /* Local pointer for decoding */
+ uint8_t *pp; /* Local pointer for encoding */
uint8_t *lenp; /* Pointer to length location for later storage */
uint32_t len = 0; /* Number of bytes used */
uint32_t version; /* Version number */
@@ -3636,10 +3635,8 @@ H5S__hyper_serialize(const H5S_t *space, uint8_t **p)
Deserialize the current selection from a user-provided buffer.
USAGE
herr_t H5S__hyper_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.
@@ -3654,27 +3651,65 @@ H5S__hyper_serialize(const H5S_t *space, uint8_t **p)
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S__hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t flags,
- const uint8_t **p)
+H5S__hyper_deserialize(H5S_t **space, const uint8_t **p)
{
- unsigned rank; /* Rank of points */
- const uint8_t *pp; /* Local pointer for decoding */
- hsize_t start[H5S_MAX_RANK]; /* Hyperslab start information */
- hsize_t block[H5S_MAX_RANK]; /* Hyperslab block information */
- unsigned u; /* Local counting variable */
- herr_t ret_value = FAIL; /* Return value */
+ H5S_t *tmp_space = NULL; /* Pointer to actual dataspace to use,
+ either *space or a newly allocated one */
+ hsize_t dims[H5S_MAX_RANK]; /* Dimenion sizes */
+ hsize_t start[H5S_MAX_RANK]; /* Hyperslab start information */
+ hsize_t block[H5S_MAX_RANK]; /* Hyperslab block information */
+ uint32_t version; /* Version number */
+ uint8_t flags = 0; /* Flags */
+ unsigned rank; /* Rank of points */
+ const uint8_t *pp; /* Local pointer for decoding */
+ unsigned u; /* Local counting variable */
+ herr_t ret_value = FAIL; /* Return value */
FUNC_ENTER_STATIC
/* Check args */
- HDassert(space);
HDassert(p);
pp = (*p);
HDassert(pp);
- /* Deserialize slabs to select */
- /* (The header and rank have already beed decoded) */
- rank = space->extent.rank; /* Retrieve rank from space */
+ /* 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 to here.
+ 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(pp, version);
+
+ if(version >= (uint32_t)2) {
+ /* Decode flags */
+ flags = *(pp)++;
+
+ /* Skip over the remainder of the header */
+ pp += 4;
+ } else
+ /* Skip over the remainder of the header */
+ pp += 8;
+
+ /* Decode the rank of the point selection */
+ UINT32DECODE(pp,rank);
+
+ if(!*space) {
+ /* Patch the rank of the allocated dataspace */
+ (void)HDmemset(dims, 0, (size_t)rank * sizeof(dims[0]));
+ if(H5S_set_extent_simple(tmp_space, rank, dims, NULL) < 0)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_CANTINIT, FAIL, "can't set dimensions")
+ } /* end if */
+ else
+ /* Verify the rank of the provided dataspace */
+ if(rank != tmp_space->extent.rank)
+ HGOTO_ERROR(H5E_DATASPACE, H5E_BADRANGE, FAIL, "rank of serialized selection does not match dataspace")
/* If there is an unlimited dimension, only encode opt_unlim_diminfo */
if(flags & H5S_SELECT_FLAG_UNLIM) {
@@ -3695,7 +3730,7 @@ H5S__hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fl
} /* end for */
/* Select the hyperslab to the current selection */
- if((ret_value = H5S_select_hyperslab(space, H5S_SELECT_SET, start, stride, count, block)) < 0)
+ if((ret_value = H5S_select_hyperslab(tmp_space, H5S_SELECT_SET, start, stride, count, block)) < 0)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, FAIL, "can't change selection")
} /* end if */
else {
@@ -3729,7 +3764,7 @@ H5S__hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fl
*tblock = (*tend - *tstart) + 1;
/* Select or add the hyperslab to the current selection */
- if((ret_value = H5S_select_hyperslab(space, (u == 0 ? H5S_SELECT_SET : H5S_SELECT_OR), start, stride, count, block)) < 0)
+ if((ret_value = H5S_select_hyperslab(tmp_space, (u == 0 ? H5S_SELECT_SET : H5S_SELECT_OR), start, stride, count, block)) < 0)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, FAIL, "can't change selection")
} /* end for */
} /* end else */
@@ -3737,7 +3772,16 @@ H5S__hyper_deserialize(H5S_t *space, uint32_t H5_ATTR_UNUSED version, uint8_t fl
/* Update decoding pointer */
*p = pp;
+ /* 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)
} /* end H5S__hyper_deserialize() */