diff options
| -rw-r--r-- | src/H5Dchunk.c | 40 | ||||
| -rw-r--r-- | src/H5Dpkg.h | 10 |
2 files changed, 29 insertions, 21 deletions
diff --git a/src/H5Dchunk.c b/src/H5Dchunk.c index 2e000e3..6b99a43 100644 --- a/src/H5Dchunk.c +++ b/src/H5Dchunk.c @@ -1034,9 +1034,8 @@ H5D__chunk_mem_alloc(size_t size, const H5O_pline_t *pline) FUNC_ENTER_STATIC_NOERR HDassert(size); - HDassert(pline); - if(pline->nused > 0) + if(pline && pline->nused) ret_value = H5MM_malloc(size); else ret_value = H5FL_BLK_MALLOC(chunk, size); @@ -1064,10 +1063,8 @@ H5D__chunk_mem_xfree(void *chk, const H5O_pline_t *pline) { FUNC_ENTER_STATIC_NOERR - HDassert(pline); - if(chk) { - if(pline->nused > 0) + if(pline && pline->nused) H5MM_xfree(chk); else chk = H5FL_BLK_FREE(chunk, chk); @@ -1751,6 +1748,7 @@ H5D__chunk_cacheable(const H5D_io_info_t *io_info, haddr_t caddr, hbool_t write_ FUNC_ENTER_PACKAGE + /* Sanity check */ HDassert(io_info); HDassert(dataset); @@ -2551,13 +2549,14 @@ H5D__chunk_lookup(const H5D_t *dset, hid_t dxpl_id, const hsize_t *scaled, H5D_chunk_ud_t *udata) { H5D_rdcc_ent_t *ent = NULL; /* Cache entry */ - hbool_t found = FALSE; /* In cache? */ - unsigned u; /* Counter */ H5O_storage_chunk_t *sc = &(dset->shared->layout.storage.u.chunk); - herr_t ret_value = SUCCEED; /* Return value */ + unsigned idx; /* Index of chunk in cache, if present */ + hbool_t found = FALSE; /* In cache? */ + herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_PACKAGE + /* Sanity checks */ HDassert(dset); HDassert(dset->shared->layout.u.chunk.ndims > 0); H5D_CHUNK_STORAGE_INDEX_CHK(sc); @@ -2567,7 +2566,7 @@ H5D__chunk_lookup(const H5D_t *dset, hid_t dxpl_id, const hsize_t *scaled, /* Initialize the query information about the chunk we are looking for */ udata->common.layout = &(dset->shared->layout.u.chunk); udata->common.storage = &(dset->shared->layout.storage.u.chunk); - udata->common.scaled = scaled; + udata->common.scaled = scaled; /* Reset information about the chunk we are looking for */ udata->chunk_block.offset = HADDR_UNDEF; @@ -2576,19 +2575,29 @@ H5D__chunk_lookup(const H5D_t *dset, hid_t dxpl_id, const hsize_t *scaled, /* Check for chunk in cache */ if(dset->shared->cache.chunk.nslots > 0) { - udata->idx_hint = H5D__chunk_hash_val(dset->shared, scaled); - ent = dset->shared->cache.chunk.slot[udata->idx_hint]; + /* Determine the chunk's location in the hash table */ + idx = H5D__chunk_hash_val(dset->shared, scaled); + + /* Get the chunk cache entry for that location */ + ent = dset->shared->cache.chunk.slot[idx]; + if(ent) { + unsigned u; /* Counter */ + + /* Speculatively set the 'found' flag */ + found = TRUE; - if(ent) - for(u = 0, found = TRUE; u < dset->shared->ndims; u++) + /* Verify that the cache entry is the correct chunk */ + for(u = 0; u < dset->shared->ndims; u++) if(scaled[u] != ent->scaled[u]) { found = FALSE; break; } /* end if */ + } /* end if */ } /* end if */ - /* Find chunk addr */ + /* Retrieve chunk addr */ if(found) { + udata->idx_hint = idx; udata->chunk_block.offset = ent->chunk_block.offset; udata->chunk_block.length = ent->chunk_block.length;; udata->chunk_idx = ent->chunk_idx; @@ -3287,6 +3296,7 @@ H5D__chunk_unlock(const H5D_io_info_t *io_info, const H5D_chunk_ud_t *udata, FUNC_ENTER_PACKAGE + /* Sanity check */ HDassert(io_info); HDassert(udata); @@ -3294,8 +3304,6 @@ H5D__chunk_unlock(const H5D_io_info_t *io_info, const H5D_chunk_ud_t *udata, /* * It's not in the cache, probably because it's too big. If it's * dirty then flush it to disk. In any case, free the chunk. - * Note: we have to copy the layout and filter messages so we - * don't discard the `const' qualifier. */ if(dirty) { H5D_rdcc_ent_t fake_ent; /* "fake" chunk cache entry */ diff --git a/src/H5Dpkg.h b/src/H5Dpkg.h index 06e763c..4e6376b 100644 --- a/src/H5Dpkg.h +++ b/src/H5Dpkg.h @@ -250,7 +250,6 @@ typedef struct H5D_chunk_rec_t { * to which the index points. */ typedef struct H5D_chunk_common_ud_t { - /* downward */ const H5O_layout_chunk_t *layout; /* Chunk layout description */ const H5O_storage_chunk_t *storage; /* Chunk storage description */ const hsize_t *scaled; /* Scaled coordinates for a chunk */ @@ -258,13 +257,14 @@ typedef struct H5D_chunk_common_ud_t { /* B-tree callback info for various operations */ typedef struct H5D_chunk_ud_t { + /* Downward */ H5D_chunk_common_ud_t common; /* Common info for B-tree user data (must be first) */ /* Upward */ - unsigned idx_hint; /*index of chunk in cache, if present */ - H5F_block_t chunk_block; /*offset/length of chunk in file */ - unsigned filter_mask; /*excluded filters */ - hsize_t chunk_idx; /*chunk index for EA, FA indexing */ + unsigned idx_hint; /* Index of chunk in cache, if present */ + H5F_block_t chunk_block; /* Offset/length of chunk in file */ + unsigned filter_mask; /* Excluded filters */ + hsize_t chunk_idx; /* Chunk index for EA, FA indexing */ } H5D_chunk_ud_t; /* Typedef for "generic" chunk callbacks */ |