diff options
Diffstat (limited to 'src/H5Dint.c')
| -rw-r--r-- | src/H5Dint.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/H5Dint.c b/src/H5Dint.c index ae25d17..322776b 100644 --- a/src/H5Dint.c +++ b/src/H5Dint.c @@ -2832,6 +2832,126 @@ done: /*------------------------------------------------------------------------- + * Function: H5D__format_convert + * + * Purpose: For chunked: downgrade the chunk indexing type to version 1 B-tree + * For compact/contiguous: downgrade layout version to 3 + * + * Return: Success: Non-negative + * Failure: Negative + * + * Programmer: Vailin Choi + * Feb 2015 + * + *------------------------------------------------------------------------- + */ +herr_t +H5D__format_convert(H5D_t *dataset, hid_t dxpl_id) +{ + H5O_t *oh = NULL; /* Pointer to dataset's object header */ + H5D_chk_idx_info_t new_idx_info; /* Index info for the new layout */ + H5D_chk_idx_info_t idx_info; /* Index info for the current layout */ + H5O_layout_t newlayout; /* The new layout */ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_PACKAGE_TAG(dxpl_id, dataset->oloc.addr, FAIL) + + /* Check args */ + HDassert(dataset); + + switch(dataset->shared->layout.type) { + case H5D_CHUNKED: + HDassert(dataset->shared->layout.u.chunk.idx_type != H5D_CHUNK_IDX_BTREE); + + /* Set up the current index info */ + idx_info.f = dataset->oloc.file; + idx_info.dxpl_id = dxpl_id; + idx_info.pline = &dataset->shared->dcpl_cache.pline; + idx_info.layout = &dataset->shared->layout.u.chunk; + idx_info.storage = &dataset->shared->layout.storage.u.chunk; + + /* Copy the current layout info to the new layout */ + HDmemcpy(&newlayout, &dataset->shared->layout, sizeof(H5O_layout_t)); + + /* Set up info for version 1 B-tree in the new layout */ + newlayout.version = H5O_LAYOUT_VERSION_3; + newlayout.storage.u.chunk.idx_type = H5D_CHUNK_IDX_BTREE; + newlayout.storage.u.chunk.idx_addr = HADDR_UNDEF; + newlayout.storage.u.chunk.ops = H5D_COPS_BTREE; + newlayout.storage.u.chunk.u.btree.shared = NULL; + + /* Set up the index info to version 1 B-tree */ + new_idx_info.f = dataset->oloc.file; + new_idx_info.dxpl_id = dxpl_id; + new_idx_info.pline = &dataset->shared->dcpl_cache.pline; + new_idx_info.layout = &newlayout.u.chunk; + new_idx_info.storage = &newlayout.storage.u.chunk; + + /* Initialize version 1 B-tree */ + if(newlayout.storage.u.chunk.ops->init && (newlayout.storage.u.chunk.ops->init)(&new_idx_info, dataset->shared->space, dataset->oloc.addr) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't initialize indexing information") + + /* If the current chunk index exists */ + if(H5F_addr_defined(dataset->shared->layout.storage.u.chunk.idx_addr)) { + /* Create v1 B-tree chunk index */ + if((newlayout.storage.u.chunk.ops->create)(&new_idx_info) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "can't create chunk index") + + /* Iterate over the chunks in the current index and insert the chunk addresses + * into the version 1 B-tree chunk index */ + if(H5D__chunk_format_convert(dataset, &idx_info, &new_idx_info) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_BADITER, FAIL, "unable to iterate over chunk index to chunk info") + } /* end if */ + + /* Release the old (i.e. current) chunk index */ + if(dataset->shared->layout.storage.u.chunk.ops->dest && (dataset->shared->layout.storage.u.chunk.ops->dest)(&idx_info) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTFREE, FAIL, "unable to release chunk index info") + + /* Delete the "layout" message */ + if(H5O_msg_remove(&dataset->oloc, H5O_LAYOUT_ID, H5O_ALL, TRUE, dxpl_id) < 0) + HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete layout message") + + HDmemcpy(&dataset->shared->layout, &newlayout, sizeof(H5O_layout_t)); + + if(NULL == (oh = H5O_pin(&dataset->oloc, dxpl_id))) + HGOTO_ERROR(H5E_DATASET, H5E_CANTPIN, FAIL, "unable to pin dataset object header") + + /* Append the new layout message to the object header */ + if(H5O_msg_append_oh(dataset->oloc.file, dxpl_id, oh, H5O_LAYOUT_ID, 0, H5O_UPDATE_TIME, &newlayout) < 0) + HGOTO_ERROR(H5E_DATASET, H5E_CANTINIT, FAIL, "unable to update old fill value header message") + + break; + + case H5D_CONTIGUOUS: + case H5D_COMPACT: + HDassert(dataset->shared->layout.version > H5O_LAYOUT_VERSION_DEFAULT); + dataset->shared->layout.version = H5O_LAYOUT_VERSION_DEFAULT; + if(H5O_msg_write(&(dataset->oloc), H5O_LAYOUT_ID, 0, H5O_UPDATE_TIME, &(dataset->shared->layout), dxpl_id) < 0) + HGOTO_ERROR(H5E_FILE, H5E_CANTINIT, FAIL, "unable to update layout message") + break; + + case H5D_VIRTUAL: + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "virtual dataset layout not supported") + + case H5D_LAYOUT_ERROR: + case H5D_NLAYOUTS: + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "invalid dataset layout type") + + default: + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "unknown dataset layout type") + } /* end switch */ + +done: + /* Release pointer to object header */ + if(oh != NULL) + if(H5O_unpin(oh) < 0) + HDONE_ERROR(H5E_DATASET, H5E_CANTUNPIN, FAIL, "unable to unpin dataset object header") + + FUNC_LEAVE_NOAPI_TAG(ret_value, FAIL) +} /* end H5D__format_convert() */ + + +/*------------------------------------------------------------------------- * Function: H5D__mark * * Purpose: Mark some aspect of a dataset as dirty |