diff options
Diffstat (limited to 'src/H5Tconv.c')
| -rw-r--r-- | src/H5Tconv.c | 95 |
1 files changed, 63 insertions, 32 deletions
diff --git a/src/H5Tconv.c b/src/H5Tconv.c index 16fc719..00cde28 100644 --- a/src/H5Tconv.c +++ b/src/H5Tconv.c @@ -45,6 +45,9 @@ static int interface_initialize_g = 0; /* Declare a free list to manage pieces of vlen data */ H5FL_BLK_DEFINE_STATIC(vlen_seq); +/* Declare a free list to manage pieces of array data */ +H5FL_BLK_DEFINE_STATIC(array_seq); + /* * These macros are for the bodies of functions that convert buffers of one * integer type to another using hardware. They all start with `H5T_CONV_' @@ -1175,10 +1178,7 @@ H5T_conv_b_b(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, * Purpose: Check whether the source or destination datatypes require a * background buffer for the conversion. * - * Currently, only compound datatypes require a background buffer, - * but since they can be embedded in variable-length or array datatypes, - * those types must ask for a background buffer if they have compound - * components. + * Currently, only compound datatypes require a background buffer. * * Return: Non-negative on success/Negative on failure * @@ -1198,14 +1198,8 @@ H5T_conv_need_bkg (H5T_t *src, H5T_t *dst, H5T_cdata_t *cdata) assert(dst); assert(cdata); - /* Compound datatypes only need a "temp" buffer */ + /* Compound datatypes need a buffer */ if (H5T_detect_class(src,H5T_COMPOUND)==TRUE || H5T_detect_class(dst,H5T_COMPOUND)==TRUE) - cdata->need_bkg = H5T_BKG_TEMP; - - /* Compound datatypes need a "yes" buffer though */ - if (H5T_detect_class(src,H5T_VLEN)==TRUE || H5T_detect_class(dst,H5T_VLEN)==TRUE) - cdata->need_bkg = H5T_BKG_YES; - if (H5T_detect_class(src,H5T_ARRAY)==TRUE || H5T_detect_class(dst,H5T_ARRAY)==TRUE) cdata->need_bkg = H5T_BKG_YES; FUNC_LEAVE (SUCCEED); @@ -2200,7 +2194,7 @@ H5T_conv_enum(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, herr_t H5T_conv_vlen(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, size_t buf_stride, size_t bkg_stride, void *_buf, - void *_bkg, hid_t dset_xfer_plist) + void UNUSED *_bkg, hid_t dset_xfer_plist) { H5T_path_t *tpath; /* Type conversion path */ hid_t tsrc_id = -1, tdst_id = -1;/*temporary type atoms */ @@ -2208,15 +2202,17 @@ H5T_conv_vlen(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, H5T_t *dst = NULL; /*destination data type */ hsize_t olap; /*num overlapping elements */ uint8_t *s, *sp, *d, *dp; /*source and dest traversal ptrs */ - uint8_t **dptr; /*pointer to correct destination pointer*/ + uint8_t **dptr; /*pointer to correct destination pointer*/ size_t src_delta, dst_delta; /*source & destination stride */ - hssize_t seq_len; /*the number of elements in the current sequence*/ + hssize_t seq_len; /*the number of elements in the current sequence*/ size_t src_base_size, dst_base_size;/*source & destination base size*/ - size_t src_size, dst_size;/*source & destination total size in bytes*/ + size_t src_size, dst_size; /*source & destination total size in bytes*/ void *conv_buf=NULL; /*temporary conversion buffer */ - size_t conv_buf_size; /*size of conversion buffer in bytes */ + hsize_t conv_buf_size=0; /*size of conversion buffer in bytes */ + void *bkg_buf=NULL; /*temporary background buffer */ + hsize_t bkg_buf_size=0; /*size of background buffer in bytes */ uint8_t dbuf[64],*dbuf_ptr=dbuf;/*temp destination buffer */ - int direction; /*direction of traversal */ + int direction; /*direction of traversal */ hsize_t elmtno; /*element number counter */ FUNC_ENTER (H5T_conv_vlen, FAIL); @@ -2239,8 +2235,8 @@ H5T_conv_vlen(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, assert (H5T_VLEN==src->type); assert (H5T_VLEN==dst->type); - /* Check if we need a background buffer */ - H5T_conv_need_bkg (src, dst, cdata); + /* Variable-length types don't need a background buffer */ + cdata->need_bkg = H5T_BKG_NO; break; @@ -2320,6 +2316,14 @@ H5T_conv_vlen(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, } } + /* Check if we need a background buffer for this conversion */ + if(tpath->cdata.need_bkg) { + /* Set up initial background buffer */ + bkg_buf_size=MAX(src_base_size,dst_base_size); + if ((bkg_buf=H5FL_BLK_ALLOC(vlen_seq,bkg_buf_size,0))==NULL) + HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for type conversion"); + } /* end if */ + for (elmtno=0; elmtno<nelmts; elmtno++) { s = sp; d = *dptr; @@ -2345,10 +2349,19 @@ H5T_conv_vlen(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, HRETURN_ERROR(H5E_DATATYPE, H5E_READERROR, FAIL, "can't read VL data"); + /* Check if background buffer is large enough, resize if necessary */ + /* (Chain off the conversion buffer size) */ + if(tpath->cdata.need_bkg && bkg_buf_size<conv_buf_size) { + /* Set up initial background buffer */ + bkg_buf_size=conv_buf_size; + if((bkg_buf=H5FL_BLK_REALLOC(vlen_seq,bkg_buf,bkg_buf_size))==NULL) + HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for type conversion"); + } /* end if */ + /* Convert VL sequence */ H5_CHECK_OVERFLOW(seq_len,hssize_t,hsize_t); if (H5T_convert(tpath, tsrc_id, tdst_id, (hsize_t)seq_len, 0, bkg_stride, - conv_buf, _bkg, dset_xfer_plist)<0) + conv_buf, bkg_buf, dset_xfer_plist)<0) HRETURN_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "datatype conversion failed"); @@ -2376,9 +2389,13 @@ H5T_conv_vlen(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, } /* end if */ } - /* Release the conversion buffer */ + /* Release the conversion buffer (always allocated) */ H5FL_BLK_FREE(vlen_seq,conv_buf); + /* Release the background buffer, if we have one */ + if(bkg_buf!=NULL) + H5FL_BLK_FREE(vlen_seq,bkg_buf); + /* Release the temporary datatype IDs used */ if (tsrc_id >= 0) H5I_dec_ref(tsrc_id); @@ -2413,17 +2430,19 @@ H5T_conv_vlen(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, herr_t H5T_conv_array(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, size_t buf_stride, size_t bkg_stride, void *_buf, - void *_bkg, hid_t dset_xfer_plist) + void UNUSED *_bkg, hid_t dset_xfer_plist) { - H5T_path_t *tpath; /* Type conversion path */ - hid_t tsrc_id = -1, tdst_id = -1;/*temporary type atoms */ - H5T_t *src = NULL; /*source data type */ - H5T_t *dst = NULL; /*destination data type */ - uint8_t *sp, *dp; /*source and dest traversal ptrs */ + H5T_path_t *tpath; /* Type conversion path */ + hid_t tsrc_id = -1, tdst_id = -1;/*temporary type atoms */ + H5T_t *src = NULL; /*source data type */ + H5T_t *dst = NULL; /*destination data type */ + uint8_t *sp, *dp; /*source and dest traversal ptrs */ size_t src_delta, dst_delta; /*source & destination stride */ - int direction; /*direction of traversal */ + int direction; /*direction of traversal */ hsize_t elmtno; /*element number counter */ - int i; /* local index variable */ + int i; /* local index variable */ + void *bkg_buf=NULL; /*temporary background buffer */ + hsize_t bkg_buf_size=0; /*size of background buffer in bytes */ FUNC_ENTER (H5T_conv_array, FAIL); @@ -2457,8 +2476,8 @@ H5T_conv_array(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, HRETURN_ERROR(H5E_DATATYPE, H5E_UNSUPPORTED, FAIL, "array datatypes do not have the same dimension permutations"); #endif /* LATER */ - /* Check if we need a background buffer */ - H5T_conv_need_bkg (src, dst, cdata); + /* Array datatypes don't need a background buffer */ + cdata->need_bkg = H5T_BKG_NO; break; @@ -2509,13 +2528,21 @@ H5T_conv_array(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, } } + /* Check if we need a background buffer for this conversion */ + if(tpath->cdata.need_bkg) { + /* Allocate background buffer */ + bkg_buf_size=src->u.array.nelem*MAX(src->size,dst->size); + if ((bkg_buf=H5FL_BLK_ALLOC(array_seq,bkg_buf_size,0))==NULL) + HRETURN_ERROR (H5E_RESOURCE, H5E_NOSPACE, FAIL, "memory allocation failed for type conversion"); + } /* end if */ + /* Perform the actual conversion */ for (elmtno=0; elmtno<nelmts; elmtno++) { /* Copy the source array into the correct location for the destination */ HDmemmove(dp, sp, src->size); /* Convert array */ - if (H5T_convert(tpath, tsrc_id, tdst_id, (hsize_t)src->u.array.nelem, 0, bkg_stride, dp, _bkg, dset_xfer_plist)<0) + if (H5T_convert(tpath, tsrc_id, tdst_id, (hsize_t)src->u.array.nelem, 0, bkg_stride, dp, bkg_buf, dset_xfer_plist)<0) HRETURN_ERROR(H5E_DATATYPE, H5E_CANTINIT, FAIL, "datatype conversion failed"); /* Advance the source & destination pointers */ @@ -2523,6 +2550,10 @@ H5T_conv_array(hid_t src_id, hid_t dst_id, H5T_cdata_t *cdata, hsize_t nelmts, dp += dst_delta; } + /* Release the background buffer, if we have one */ + if(bkg_buf!=NULL) + H5FL_BLK_FREE(array_seq,bkg_buf); + /* Release the temporary datatype IDs used */ if (tsrc_id >= 0) H5I_dec_ref(tsrc_id); |