diff options
Diffstat (limited to 'src/H5Sselect.c')
| -rw-r--r-- | src/H5Sselect.c | 81 |
1 files changed, 63 insertions, 18 deletions
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() */ |