diff options
| -rw-r--r-- | tools/h5repack/h5repack_copy.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/tools/h5repack/h5repack_copy.c b/tools/h5repack/h5repack_copy.c index 6c47cfb..7d2c929 100644 --- a/tools/h5repack/h5repack_copy.c +++ b/tools/h5repack/h5repack_copy.c @@ -559,6 +559,7 @@ int do_copy_objects(hid_t fidin, named_dt_t *named_dt_head=NULL; /* Pointer to the stack of named datatypes copied */ size_t msize; /* size of type */ hsize_t nelmts; /* number of elements in dataset */ + H5D_space_status_t *space_status; /* determines whether space has been allocated for the dataset */ int rank; /* rank of dataset */ hsize_t dims[H5S_MAX_RANK];/* dimensions of dataset */ hsize_t dsize_in; /* input dataset size before filter */ @@ -746,6 +747,10 @@ int do_copy_objects(hid_t fidin, HDmemset(dims, 0, sizeof dims); if(H5Sget_simple_extent_dims(f_space_id, dims, NULL) < 0) goto error; + + if(H5Dget_space_status(dset_in, &space_status) <0) + goto error; + nelmts = 1; for ( j = 0; j < rank; j++) { @@ -834,9 +839,11 @@ int do_copy_objects(hid_t fidin, * read/write *------------------------------------------------------------------------- */ - if (nelmts) + if (nelmts>0 && space_status!=H5D_SPACE_STATUS_NOT_ALLOCATED) { size_t need = (size_t)(nelmts*msize); /* bytes needed */ + + /* have to read the whole dataset if there is only one element in the dataset */ if ( need < H5TOOLS_MALLOCSIZE ) buf = HDmalloc(need); @@ -847,7 +854,6 @@ int do_copy_objects(hid_t fidin, if (H5Dwrite(dset_out,wtype_id,H5S_ALL,H5S_ALL,H5P_DEFAULT,buf) < 0) goto error; } - else /* possibly not enough memory, read/write by hyperslabs */ { size_t p_type_nbytes = msize; /*size of memory type */ @@ -949,7 +955,7 @@ int do_copy_objects(hid_t fidin, sm_buf=NULL; } } /* hyperslab read */ - }/*nelmts*/ + } /* if (nelmts>0 && space_status==H5D_SPACE_STATUS_NOT_ALLOCATED) */ /*------------------------------------------------------------------------- * amount of compression used |