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authorQuincey Koziol <koziol@hdfgroup.org>2015-02-25 18:03:52 (GMT)
committerQuincey Koziol <koziol@hdfgroup.org>2015-02-25 18:03:52 (GMT)
commit3550004b200ef695c973fcf2310e95512c560c73 (patch)
treeb06bb425befa0596ad98fa8a34a6ccbafe635385 /src
parent0ce8fddc735c588dcd5667f9fce44033500a4465 (diff)
downloadhdf5-3550004b200ef695c973fcf2310e95512c560c73.zip
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[svn-r26302] Description:
Revise dataspace encode/decode routines to make them work better with future virtual dataset feature. Tested on: Mac OSX/64 10.10.2 (amazon) w/serial (h5committest forthcoming)
Diffstat (limited to 'src')
-rw-r--r--src/H5R.c4
-rw-r--r--src/H5S.c4
-rw-r--r--src/H5Sall.c41
-rw-r--r--src/H5Shyper.c82
-rw-r--r--src/H5Snone.c35
-rw-r--r--src/H5Spkg.h4
-rw-r--r--src/H5Spoint.c56
-rw-r--r--src/H5Sprivate.h4
-rw-r--r--src/H5Sselect.c81
9 files changed, 190 insertions, 121 deletions
diff --git a/src/H5R.c b/src/H5R.c
index 8396dcc..26f4b9d 100644
--- a/src/H5R.c
+++ b/src/H5R.c
@@ -291,7 +291,7 @@ H5R_create(void *_ref, H5G_loc_t *loc, const char *name, H5R_type_t ref_type, H5
H5F_addr_encode(loc->oloc->file, &p, obj_loc.oloc->addr);
/* Serialize the selection into heap buffer */
- if(H5S_SELECT_SERIALIZE(space, p) < 0)
+ if(H5S_SELECT_SERIALIZE(space, &p) < 0)
HGOTO_ERROR(H5E_REFERENCE, H5E_CANTCOPY, FAIL, "Unable to serialize selection")
/* Save the serialized buffer for later */
@@ -659,7 +659,7 @@ H5R_get_region(H5F_t *file, hid_t dxpl_id, const void *_ref)
HGOTO_ERROR(H5E_DATASPACE, H5E_NOTFOUND, NULL, "not found")
/* Unserialize the selection */
- if(H5S_select_deserialize(ret_value, p) < 0)
+ if(H5S_SELECT_DESERIALIZE(&ret_value, &p) < 0)
HGOTO_ERROR(H5E_REFERENCE, H5E_CANTDECODE, NULL, "can't deserialize selection")
done:
diff --git a/src/H5S.c b/src/H5S.c
index 346e908..a9812695 100644
--- a/src/H5S.c
+++ b/src/H5S.c
@@ -1540,7 +1540,7 @@ H5S_encode(H5S_t *obj, unsigned char *buf, size_t *nalloc)
buf += extent_size;
/* Encode the selection part of dataspace. */
- if(H5S_SELECT_SERIALIZE(obj, buf) < 0)
+ if(H5S_SELECT_SERIALIZE(obj, &buf) < 0)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTENCODE, FAIL, "can't encode select space")
} /* end else */
@@ -1659,7 +1659,7 @@ H5S_decode(const unsigned char *buf)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTSET, NULL, "unable to set all selection")
/* Decode the select part of dataspace. I believe this part always exists. */
- if(H5S_SELECT_DESERIALIZE(ds, buf) < 0)
+ if(H5S_SELECT_DESERIALIZE(&ds, &buf) < 0)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDECODE, NULL, "can't decode space selection")
/* Set return value */
diff --git a/src/H5Sall.c b/src/H5Sall.c
index 24caad2..1105915 100644
--- a/src/H5Sall.c
+++ b/src/H5Sall.c
@@ -39,8 +39,8 @@ static herr_t H5S_all_get_seq_list(const H5S_t *space, unsigned flags,
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 *buf);
-static herr_t H5S_all_deserialize(H5S_t *space, const uint8_t *buf);
+static herr_t H5S_all_serialize(const H5S_t *space, 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 htri_t H5S_all_is_contiguous(const H5S_t *space);
@@ -496,9 +496,11 @@ H5S_all_serial_size (const H5S_t UNUSED *space)
PURPOSE
Serialize the current selection into a user-provided buffer.
USAGE
- herr_t H5S_all_serialize(space, buf)
- H5S_t *space; IN: Dataspace pointer of selection to serialize
- uint8 *buf; OUT: Buffer to put serialized selection into
+ 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
@@ -510,17 +512,19 @@ H5S_all_serial_size (const H5S_t UNUSED *space)
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S_all_serialize (const H5S_t *space, uint8_t *buf)
+H5S_all_serialize (const H5S_t *space, uint8_t **p)
{
FUNC_ENTER_NOAPI_NOINIT_NOERR
HDassert(space);
+ HDassert(p);
+ HDassert(*p);
/* 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 */
- UINT32ENCODE(buf, (uint32_t)0); /* Store the additional information 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 */
+ UINT32ENCODE(*p, (uint32_t)0); /* Store the additional information length */
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5S_all_serialize() */
@@ -532,9 +536,12 @@ H5S_all_serialize (const H5S_t *space, uint8_t *buf)
PURPOSE
Deserialize the current selection from a user-provided buffer.
USAGE
- herr_t H5S_all_deserialize(space, buf)
- H5S_t *space; IN/OUT: Dataspace pointer to place selection into
- uint8 *buf; IN: Buffer to retrieve serialized selection from
+ herr_t H5S_all_deserialize(space, p)
+ H5S_t *space; IN/OUT: Dataspace pointer to place
+ selection into
+ 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
@@ -546,16 +553,18 @@ H5S_all_serialize (const H5S_t *space, uint8_t *buf)
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S_all_deserialize(H5S_t *space, const uint8_t UNUSED *buf)
+H5S_all_deserialize(H5S_t *space, const uint8_t UNUSED **p)
{
- herr_t ret_value; /* return value */
+ herr_t ret_value = SUCCEED; /* return value */
FUNC_ENTER_NOAPI(FAIL)
HDassert(space);
+ HDassert(p);
+ HDassert(*p);
/* Change to "all" selection */
- if((ret_value = H5S_select_all(space, TRUE)) < 0)
+ if(H5S_select_all(space, TRUE) < 0)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTDELETE, FAIL, "can't change selection")
done:
diff --git a/src/H5Shyper.c b/src/H5Shyper.c
index 93a93b7..dfc0d06 100644
--- a/src/H5Shyper.c
+++ b/src/H5Shyper.c
@@ -54,8 +54,8 @@ static herr_t H5S_hyper_get_seq_list(const H5S_t *space, unsigned flags,
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 *buf);
-static herr_t H5S_hyper_deserialize(H5S_t *space, const uint8_t *buf);
+static herr_t H5S_hyper_serialize(const H5S_t *space, 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 htri_t H5S_hyper_is_contiguous(const H5S_t *space);
@@ -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 */
@@ -2055,9 +2055,11 @@ done:
PURPOSE
Serialize the current selection into a user-provided buffer.
USAGE
- herr_t H5S_hyper_serialize(space, buf)
- H5S_t *space; IN: Dataspace pointer of selection to serialize
- uint8 *buf; OUT: Buffer to put serialized selection into
+ herr_t H5S_hyper_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
@@ -2069,7 +2071,7 @@ 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 */
@@ -2089,14 +2091,14 @@ 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);
+ UINT32ENCODE(*p, (uint32_t)space->extent.rank);
len += 4;
/* Check for a "regular" hyperslab selection */
@@ -2114,7 +2116,7 @@ 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 +2139,11 @@ 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;
@@ -2192,15 +2194,15 @@ 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 */
H5_CHECK_OVERFLOW((8 * space->extent.rank * block_count), hsize_t, size_t);
- len += (size_t)(8 * space->extent.rank * block_count);
+ len += (uint32_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 */
@@ -2216,9 +2218,12 @@ H5S_hyper_serialize (const H5S_t *space, uint8_t *buf)
PURPOSE
Deserialize the current selection from a user-provided buffer.
USAGE
- herr_t H5S_hyper_deserialize(space, buf)
- H5S_t *space; IN/OUT: Dataspace pointer to place selection into
- uint8 *buf; IN: Buffer to retrieve serialized selection from
+ herr_t H5S_hyper_deserialize(space, p)
+ H5S_t *space; IN/OUT: Dataspace pointer to place
+ selection into
+ 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
@@ -2230,9 +2235,9 @@ 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)
{
- uint32_t rank; /* rank of points */
+ unsigned rank; /* rank of points */
size_t num_elem=0; /* number of elements in selection */
hsize_t start[H5O_LAYOUT_NDIMS]; /* hyperslab start information */
hsize_t end[H5O_LAYOUT_NDIMS]; /* hyperslab end information */
@@ -2251,14 +2256,13 @@ 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 */
+ /* (The header and rank have already beed decoded) */
+ rank = space->extent.rank; /* Retrieve rank from space */
+ UINT32DECODE(*p,num_elem); /* decode the number of points */
/* Set the count & stride for all blocks */
for(tcount=count,tstride=stride,j=0; j<rank; j++,tstride++,tcount++) {
@@ -2270,14 +2274,14 @@ 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++)
+ for(tblock=block,tstart=start,tend=end,j=0; j<rank; j++,tstart++,tend++,tblock++)
*tblock=(*tend-*tstart)+1;
/* Select or add the hyperslab to the current selection */
diff --git a/src/H5Snone.c b/src/H5Snone.c
index 3c5eccc..c5ec2de 100644
--- a/src/H5Snone.c
+++ b/src/H5Snone.c
@@ -40,8 +40,8 @@ static herr_t H5S_none_get_seq_list(const H5S_t *space, unsigned flags,
static herr_t H5S_none_release(H5S_t *space);
static htri_t H5S_none_is_valid(const H5S_t *space);
static hssize_t H5S_none_serial_size(const H5S_t *space);
-static herr_t H5S_none_serialize(const H5S_t *space, uint8_t *buf);
-static herr_t H5S_none_deserialize(H5S_t *space, const uint8_t *buf);
+static herr_t H5S_none_serialize(const H5S_t *space, uint8_t **p);
+static herr_t H5S_none_deserialize(H5S_t *space, const uint8_t **p);
static herr_t H5S_none_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
static herr_t H5S_none_offset(const H5S_t *space, hsize_t *off);
static htri_t H5S_none_is_contiguous(const H5S_t *space);
@@ -464,9 +464,11 @@ H5S_none_serial_size(const H5S_t UNUSED *space)
PURPOSE
Serialize the current selection into a user-provided buffer.
USAGE
- herr_t H5S_none_serialize(space, buf)
- H5S_t *space; IN: Dataspace pointer of selection to serialize
- uint8 *buf; OUT: Buffer to put serialized selection into
+ herr_t H5S_none_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
@@ -478,17 +480,17 @@ H5S_none_serial_size(const H5S_t UNUSED *space)
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S_none_serialize(const H5S_t *space, uint8_t *buf)
+H5S_none_serialize(const H5S_t *space, uint8_t **p)
{
FUNC_ENTER_NOAPI_NOINIT_NOERR
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 */
- UINT32ENCODE(buf, (uint32_t)0); /* Store the additional information 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 */
+ UINT32ENCODE(*p, (uint32_t)0); /* Store the additional information length */
FUNC_LEAVE_NOAPI(SUCCEED)
} /* H5S_none_serialize() */
@@ -500,9 +502,12 @@ H5S_none_serialize(const H5S_t *space, uint8_t *buf)
PURPOSE
Deserialize the current selection from a user-provided buffer.
USAGE
- herr_t H5S_none_deserialize(space, buf)
- H5S_t *space; IN/OUT: Dataspace pointer to place selection into
- uint8 *buf; IN: Buffer to retrieve serialized selection from
+ herr_t H5S_none_deserialize(space, p)
+ H5S_t *space; IN/OUT: Dataspace pointer to place
+ selection into
+ 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
@@ -514,13 +519,15 @@ H5S_none_serialize(const H5S_t *space, uint8_t *buf)
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S_none_deserialize(H5S_t *space, const uint8_t UNUSED *buf)
+H5S_none_deserialize(H5S_t *space, const uint8_t UNUSED **p)
{
herr_t ret_value = SUCCEED; /* return value */
FUNC_ENTER_NOAPI_NOINIT
HDassert(space);
+ HDassert(p);
+ HDassert(*p);
/* Change to "none" selection */
if(H5S_select_none(space) < 0)
diff --git a/src/H5Spkg.h b/src/H5Spkg.h
index 0a9df69..5f84717 100644
--- a/src/H5Spkg.h
+++ b/src/H5Spkg.h
@@ -130,9 +130,9 @@ typedef htri_t (*H5S_sel_is_valid_func_t)(const H5S_t *space);
/* Method to determine number of bytes required to store current selection */
typedef hssize_t (*H5S_sel_serial_size_func_t)(const H5S_t *space);
/* Method to store current selection in "serialized" form (a byte sequence suitable for storing on disk) */
-typedef herr_t (*H5S_sel_serialize_func_t)(const H5S_t *space, uint8_t *buf);
+typedef herr_t (*H5S_sel_serialize_func_t)(const H5S_t *space, uint8_t **p);
/* Method to store create selection from "serialized" form (a byte sequence suitable for storing on disk) */
-typedef herr_t (*H5S_sel_deserialize_func_t)(H5S_t *space, const uint8_t *buf);
+typedef herr_t (*H5S_sel_deserialize_func_t)(H5S_t *space, const uint8_t **p);
/* Method to determine smallest n-D bounding box containing the current selection */
typedef herr_t (*H5S_sel_bounds_func_t)(const H5S_t *space, hsize_t *start, hsize_t *end);
/* Method to determine linear offset of initial element in selection within dataspace */
diff --git a/src/H5Spoint.c b/src/H5Spoint.c
index 70842df..44e0510 100644
--- a/src/H5Spoint.c
+++ b/src/H5Spoint.c
@@ -41,8 +41,8 @@ static herr_t H5S_point_get_seq_list(const H5S_t *space, unsigned flags,
static herr_t H5S_point_release(H5S_t *space);
static htri_t H5S_point_is_valid(const H5S_t *space);
static hssize_t H5S_point_serial_size(const H5S_t *space);
-static herr_t H5S_point_serialize(const H5S_t *space, uint8_t *buf);
-static herr_t H5S_point_deserialize(H5S_t *space, const uint8_t *buf);
+static herr_t H5S_point_serialize(const H5S_t *space, uint8_t **p);
+static herr_t H5S_point_deserialize(H5S_t *space, const uint8_t **p);
static herr_t H5S_point_bounds(const H5S_t *space, hsize_t *start, hsize_t *end);
static herr_t H5S_point_offset(const H5S_t *space, hsize_t *off);
static htri_t H5S_point_is_contiguous(const H5S_t *space);
@@ -804,9 +804,11 @@ H5S_point_serial_size (const H5S_t *space)
PURPOSE
Serialize the current selection into a user-provided buffer.
USAGE
- herr_t H5S_point_serialize(space, buf)
- H5S_t *space; IN: Dataspace pointer of selection to serialize
- uint8 *buf; OUT: Buffer to put serialized selection into
+ herr_t H5S_point_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
@@ -818,7 +820,7 @@ H5S_point_serial_size (const H5S_t *space)
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S_point_serialize (const H5S_t *space, uint8_t *buf)
+H5S_point_serialize (const H5S_t *space, uint8_t **p)
{
H5S_pnt_node_t *curr; /* Point information nodes */
uint8_t *lenp; /* pointer to length location for later storage */
@@ -830,18 +832,18 @@ H5S_point_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);
+ UINT32ENCODE(*p, (uint32_t)space->extent.rank);
len+=4;
/* Encode number of elements */
- UINT32ENCODE(buf, (uint32_t)space->select.num_elem);
+ UINT32ENCODE(*p, (uint32_t)space->select.num_elem);
len+=4;
/* Encode each point in selection */
@@ -852,7 +854,7 @@ H5S_point_serialize (const H5S_t *space, uint8_t *buf)
/* Encode each point */
for(u=0; u<space->extent.rank; u++)
- UINT32ENCODE(buf, (uint32_t)curr->pnt[u]);
+ UINT32ENCODE(*p, (uint32_t)curr->pnt[u]);
curr=curr->next;
} /* end while */
@@ -870,9 +872,12 @@ H5S_point_serialize (const H5S_t *space, uint8_t *buf)
PURPOSE
Deserialize the current selection from a user-provided buffer.
USAGE
- herr_t H5S_point_deserialize(space, buf)
- H5S_t *space; IN/OUT: Dataspace pointer to place selection into
- uint8 *buf; IN: Buffer to retrieve serialized selection from
+ herr_t H5S_point_deserialize(space, p)
+ H5S_t *space; IN/OUT: Dataspace pointer to place
+ selection into
+ 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
@@ -884,10 +889,10 @@ H5S_point_serialize (const H5S_t *space, uint8_t *buf)
REVISION LOG
--------------------------------------------------------------------------*/
static herr_t
-H5S_point_deserialize (H5S_t *space, const uint8_t *buf)
+H5S_point_deserialize (H5S_t *space, const uint8_t **p)
{
H5S_seloper_t op=H5S_SELECT_SET; /* Selection operation */
- uint32_t rank; /* Rank of points */
+ unsigned rank; /* Rank of points */
size_t num_elem=0; /* Number of elements in selection */
hsize_t *coord=NULL, *tcoord; /* Pointer to array of elements */
unsigned i, j; /* local counting variables */
@@ -897,14 +902,13 @@ H5S_point_deserialize (H5S_t *space, const uint8_t *buf)
/* Check args */
HDassert(space);
- HDassert(buf);
+ HDassert(p);
+ HDassert(*p);
/* Deserialize points 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 */
+ /* (The header and rank have already beed decoded) */
+ rank = space->extent.rank; /* Retrieve rank from space */
+ UINT32DECODE(*p, num_elem); /* decode the number of points */
/* Allocate space for the coordinates */
if(NULL == (coord = (hsize_t *)H5MM_malloc(num_elem * rank * sizeof(hsize_t))))
@@ -913,7 +917,7 @@ H5S_point_deserialize (H5S_t *space, const uint8_t *buf)
/* Retrieve the coordinates from the buffer */
for(tcoord = coord, i = 0; i < num_elem; i++)
for(j = 0; j < (unsigned)rank; j++, tcoord++)
- UINT32DECODE(buf, *tcoord);
+ UINT32DECODE(*p, *tcoord);
/* Select points */
if(H5S_select_elements(space, op, num_elem, (const hsize_t *)coord) < 0)
diff --git a/src/H5Sprivate.h b/src/H5Sprivate.h
index 44cd6c3..7b7b8c6 100644
--- a/src/H5Sprivate.h
+++ b/src/H5Sprivate.h
@@ -206,7 +206,7 @@ H5_DLL int H5S_extent_get_dims(const H5S_extent_t *ext, hsize_t dims[], hsize_t
H5_DLL htri_t H5S_extent_equal(const H5S_t *ds1, const H5S_t *ds2);
/* Operations on selections */
-H5_DLL herr_t H5S_select_deserialize(H5S_t *space, const uint8_t *buf);
+H5_DLL herr_t H5S_select_deserialize(H5S_t **space, const uint8_t **p);
H5_DLL H5S_sel_type H5S_get_select_type(const H5S_t *space);
H5_DLL herr_t H5S_select_iterate(void *buf, hid_t type_id, const H5S_t *space,
H5D_operator_t op, void *operator_data);
@@ -227,7 +227,7 @@ H5_DLL herr_t H5S_select_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);
H5_DLL hssize_t H5S_select_serial_size(const H5S_t *space);
-H5_DLL herr_t H5S_select_serialize(const H5S_t *space, uint8_t *buf);
+H5_DLL herr_t H5S_select_serialize(const H5S_t *space, uint8_t **p);
H5_DLL htri_t H5S_select_is_contiguous(const H5S_t *space);
H5_DLL htri_t H5S_select_is_single(const H5S_t *space);
H5_DLL htri_t H5S_select_is_regular(const H5S_t *space);
diff --git a/src/H5Sselect.c b/src/H5Sselect.c
index 2cb4b38..a4f13d7 100644
--- a/src/H5Sselect.c
+++ b/src/H5Sselect.c
@@ -239,9 +239,11 @@ H5S_select_serial_size(const H5S_t *space)
PURPOSE
Serialize the selection for a dataspace into a buffer
USAGE
- herr_t H5S_select_serialize(space, buf)
+ herr_t H5S_select_serialize(space, p)
const H5S_t *space; IN: Dataspace with selection to serialize
- uint8_t *buf; OUT: Buffer to put serialized selection
+ 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
@@ -256,17 +258,17 @@ H5S_select_serial_size(const H5S_t *space)
REVISION LOG
--------------------------------------------------------------------------*/
herr_t
-H5S_select_serialize(const H5S_t *space, uint8_t *buf)
+H5S_select_serialize(const H5S_t *space, uint8_t **p)
{
herr_t ret_value=SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT_NOERR
HDassert(space);
- HDassert(buf);
+ HDassert(p);
/* Call the selection type's serialize function */
- ret_value=(*space->select.type->serialize)(space,buf);
+ ret_value=(*space->select.type->serialize)(space,p);
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5S_select_serialize() */
@@ -428,9 +430,13 @@ H5S_select_valid(const H5S_t *space)
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
+ herr_t H5S_select_deserialize(space, p)
+ H5S_t **space; IN/OUT: Dataspace pointer to place
+ selection into. Will be allocated if not
+ provided.
+ 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
@@ -444,42 +450,81 @@ H5S_select_valid(const H5S_t *space)
REVISION LOG
--------------------------------------------------------------------------*/
herr_t
-H5S_select_deserialize (H5S_t *space, const uint8_t *buf)
+H5S_select_deserialize (H5S_t **space, const uint8_t **p)
{
- const uint8_t *tbuf; /* Temporary pointer to the selection type */
- uint32_t sel_type; /* Pointer to the selection type */
+ H5S_t *tmp_space; /* Pointer to actual dataspace to use, either
+ *space or a newly allocated one */
+ uint32_t sel_type; /* Pointer to the selection type */
herr_t ret_value=FAIL; /* return value */
FUNC_ENTER_NOAPI(FAIL)
HDassert(space);
- tbuf=buf;
- UINT32DECODE(tbuf, sel_type);
+ /* 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 selection type */
+ UINT32DECODE(*p, sel_type);
+
+ /* Skip over the remainder of the header */
+ *p += 12;
+
+ /* Decode and check or patch rank for point and hyperslab selections */
+ if((sel_type == H5S_SEL_POINTS) || (sel_type == H5S_SEL_HYPERSLABS)) {
+ uint32_t rank; /* Rank of dataspace */
+
+ /* Decode the rank of the point selection */
+ UINT32DECODE(*p,rank);
+
+ if(!*space)
+ /* Patch the rank of the allocated dataspace */
+ tmp_space->extent.rank = rank;
+ 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")
+ } /* end if */
+
+ /* Make routine for selection type */
switch(sel_type) {
case H5S_SEL_POINTS: /* Sequence of points selected */
- ret_value=(*H5S_sel_point->deserialize)(space,buf);
+ ret_value = (*H5S_sel_point->deserialize)(tmp_space, p);
break;
case H5S_SEL_HYPERSLABS: /* Hyperslab selection defined */
- ret_value=(*H5S_sel_hyper->deserialize)(space,buf);
+ ret_value = (*H5S_sel_hyper->deserialize)(tmp_space, p);
break;
case H5S_SEL_ALL: /* Entire extent selected */
- ret_value=(*H5S_sel_all->deserialize)(space,buf);
+ ret_value = (*H5S_sel_all->deserialize)(tmp_space, p);
break;
case H5S_SEL_NONE: /* Nothing selected */
- ret_value=(*H5S_sel_none->deserialize)(space,buf);
+ ret_value = (*H5S_sel_none->deserialize)(tmp_space, p);
break;
default:
break;
}
- if(ret_value<0)
+ if(ret_value < 0)
HGOTO_ERROR(H5E_DATASPACE, H5E_CANTLOAD, FAIL, "can't deserialize 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_select_deserialize() */