diff options
Diffstat (limited to 'src/H5Olayout.c')
| -rw-r--r-- | src/H5Olayout.c | 128 |
1 files changed, 97 insertions, 31 deletions
diff --git a/src/H5Olayout.c b/src/H5Olayout.c index 31ddb88..f2af8ef 100644 --- a/src/H5Olayout.c +++ b/src/H5Olayout.c @@ -124,7 +124,7 @@ H5O__layout_decode(H5F_t *f, hid_t H5_ATTR_UNUSED dxpl_id, H5O_t H5_ATTR_UNUSED HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "bad version number for layout message") if(mesg->version < H5O_LAYOUT_VERSION_3) { - unsigned ndims; /* Num dimensions in chunk */ + unsigned ndims; /* Num dimensions in chunk */ /* Dimensionality */ ndims = *p++; @@ -233,26 +233,67 @@ H5O__layout_decode(H5F_t *f, hid_t H5_ATTR_UNUSED dxpl_id, H5O_t H5_ATTR_UNUSED break; case H5D_CHUNKED: - /* Dimensionality */ - mesg->u.chunk.ndims = *p++; - if(mesg->u.chunk.ndims > H5O_LAYOUT_NDIMS) - HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "dimensionality is too large") - - /* B-tree address */ - H5F_addr_decode(f, &p, &(mesg->storage.u.chunk.idx_addr)); - - /* Chunk dimensions */ - for(u = 0; u < mesg->u.chunk.ndims; u++) - UINT32DECODE(p, mesg->u.chunk.dim[u]); - - /* Compute chunk size */ - for(u = 1, mesg->u.chunk.size = mesg->u.chunk.dim[0]; u < mesg->u.chunk.ndims; u++) - mesg->u.chunk.size *= mesg->u.chunk.dim[u]; - - /* Set the chunk operations */ - /* (Only "btree" indexing type supported with v3 of message format) */ - mesg->storage.u.chunk.idx_type = H5D_CHUNK_IDX_BTREE; - mesg->storage.u.chunk.ops = H5D_COPS_BTREE; + if(mesg->version < H5O_LAYOUT_VERSION_4) { + /* Set the chunked layout flags */ + mesg->u.chunk.flags = (uint8_t)0; + + /* Dimensionality */ + mesg->u.chunk.ndims = *p++; + if(mesg->u.chunk.ndims > H5O_LAYOUT_NDIMS) + HGOTO_ERROR(H5E_OHDR, H5E_CANTLOAD, NULL, "dimensionality is too large") + + /* B-tree address */ + H5F_addr_decode(f, &p, &(mesg->storage.u.chunk.idx_addr)); + + /* Chunk dimensions */ + for(u = 0; u < mesg->u.chunk.ndims; u++) + UINT32DECODE(p, mesg->u.chunk.dim[u]); + + /* Compute chunk size */ + for(u = 1, mesg->u.chunk.size = mesg->u.chunk.dim[0]; u < mesg->u.chunk.ndims; u++) + mesg->u.chunk.size *= mesg->u.chunk.dim[u]; + + /* Set the chunk operations */ + /* (Only "btree" indexing type supported with v3 of message format) */ + mesg->storage.u.chunk.idx_type = H5D_CHUNK_IDX_BTREE; + mesg->storage.u.chunk.ops = H5D_COPS_BTREE; + } /* end if */ + else { + /* Get the chunked layout flags */ + mesg->u.chunk.flags = *p++; + + /* Check for valid flags */ + /* (Currently issues an error for all non-zero values, + * until features are added for the flags) + */ + if(mesg->u.chunk.flags & ~H5O_LAYOUT_ALL_CHUNK_FLAGS) + HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, NULL, "bad flag value for message") + + /* Dimensionality */ + mesg->u.chunk.ndims = *p++; + if(mesg->u.chunk.ndims > H5O_LAYOUT_NDIMS) + HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, NULL, "dimensionality is too large") + + /* Encoded # of bytes for each chunk dimension */ + mesg->u.chunk.enc_bytes_per_dim = *p++; + if(mesg->u.chunk.enc_bytes_per_dim == 0 || mesg->u.chunk.enc_bytes_per_dim > 8) + HGOTO_ERROR(H5E_OHDR, H5E_BADVALUE, NULL, "encoded chunk dimension size is too large") + + /* Chunk dimensions */ + for(u = 0; u < mesg->u.chunk.ndims; u++) + UINT64DECODE_VAR(p, mesg->u.chunk.dim[u], mesg->u.chunk.enc_bytes_per_dim); + + /* Compute chunk size */ + for(u = 1, mesg->u.chunk.size = mesg->u.chunk.dim[0]; u < mesg->u.chunk.ndims; u++) + mesg->u.chunk.size *= mesg->u.chunk.dim[u]; + + /* Set the chunk operations */ + mesg->storage.u.chunk.idx_type = H5D_CHUNK_IDX_BTREE; + mesg->storage.u.chunk.ops = H5D_COPS_BTREE; + + /* Chunk index address */ + H5F_addr_decode(f, &p, &(mesg->storage.u.chunk.idx_addr)); + } /* end else */ /* Set the layout operations */ mesg->ops = H5D_LOPS_CHUNK; @@ -457,8 +498,8 @@ H5O__layout_encode(H5F_t *f, hbool_t H5_ATTR_UNUSED disable_shared, uint8_t *p, HDassert(p); /* Message version */ - *p++ = mesg->type == H5D_VIRTUAL ? (uint8_t)H5O_LAYOUT_VERSION_4 - : (uint8_t)H5O_LAYOUT_VERSION_3; + *p++ = (uint8_t)((mesg->version < H5O_LAYOUT_VERSION_3) ? + H5O_LAYOUT_VERSION_3 : mesg->version); /* Layout class */ *p++ = mesg->type; @@ -488,16 +529,41 @@ H5O__layout_encode(H5F_t *f, hbool_t H5_ATTR_UNUSED disable_shared, uint8_t *p, break; case H5D_CHUNKED: - /* Number of dimensions */ - HDassert(mesg->u.chunk.ndims > 0 && mesg->u.chunk.ndims <= H5O_LAYOUT_NDIMS); - *p++ = (uint8_t)mesg->u.chunk.ndims; + if(mesg->version < H5O_LAYOUT_VERSION_4) { + /* Number of dimensions */ + HDassert(mesg->u.chunk.ndims > 0 && mesg->u.chunk.ndims <= H5O_LAYOUT_NDIMS); + *p++ = (uint8_t)mesg->u.chunk.ndims; - /* B-tree address */ - H5F_addr_encode(f, &p, mesg->storage.u.chunk.idx_addr); + /* B-tree address */ + H5F_addr_encode(f, &p, mesg->storage.u.chunk.idx_addr); - /* Dimension sizes */ - for(u = 0; u < mesg->u.chunk.ndims; u++) - UINT32ENCODE(p, mesg->u.chunk.dim[u]); + /* Dimension sizes */ + for(u = 0; u < mesg->u.chunk.ndims; u++) + UINT32ENCODE(p, mesg->u.chunk.dim[u]); + } /* end if */ + else { + /* Chunk feature flags */ + *p++ = mesg->u.chunk.flags; + + /* Number of dimensions */ + HDassert(mesg->u.chunk.ndims > 0 && mesg->u.chunk.ndims <= H5O_LAYOUT_NDIMS); + *p++ = (uint8_t)mesg->u.chunk.ndims; + + /* Encoded # of bytes for each chunk dimension */ + HDassert(mesg->u.chunk.enc_bytes_per_dim > 0 && mesg->u.chunk.enc_bytes_per_dim <= 8); + *p++ = (uint8_t)mesg->u.chunk.enc_bytes_per_dim; + + /* Dimension sizes */ + for(u = 0; u < mesg->u.chunk.ndims; u++) + UINT64ENCODE_VAR(p, mesg->u.chunk.dim[u], mesg->u.chunk.enc_bytes_per_dim); + + /* + * Implicit index: Address of the chunks + * Single chunk index: address of the single chunk + * Other indexes: chunk index address + */ + H5F_addr_encode(f, &p, mesg->storage.u.chunk.idx_addr); + } /* end else */ break; case H5D_VIRTUAL: |