diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/H5HG.c | 12 | ||||
| -rw-r--r-- | src/H5HGcache.c | 26 |
2 files changed, 24 insertions, 14 deletions
@@ -310,7 +310,7 @@ H5HG_alloc (H5F_t *f, H5HG_heap_t *heap, size_t size, unsigned * heap_flags_ptr) * Find an ID for the new object. ID zero is reserved for the free space * object. */ - if(heap->nused<H5HG_MAXIDX) + if(heap->nused<=H5HG_MAXIDX) idx=heap->nused++; else { for (idx=1; idx<heap->nused; idx++) @@ -326,17 +326,21 @@ H5HG_alloc (H5F_t *f, H5HG_heap_t *heap, size_t size, unsigned * heap_flags_ptr) H5HG_obj_t *new_obj; /* New array of object descriptions */ /* Determine the new number of objects to index */ - new_alloc=MAX(heap->nalloc*2,(idx+1)); - assert(new_alloc<=(H5HG_MAXIDX+1)); + /* nalloc is *not* guaranteed to be a power of 2! - NAF 10/26/09 */ + new_alloc = MIN(MAX(heap->nalloc * 2, (idx + 1)), (H5HG_MAXIDX + 1)); + HDassert(idx < new_alloc); /* Reallocate array of objects */ if (NULL==(new_obj = H5FL_SEQ_REALLOC (H5HG_obj_t, heap->obj, new_alloc))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, 0, "memory allocation failed") + /* Clear newly allocated space */ + HDmemset(&new_obj[heap->nalloc], 0, (new_alloc - heap->nalloc) * sizeof(heap->obj[0])); + /* Update heap information */ heap->nalloc=new_alloc; heap->obj=new_obj; - assert(heap->nalloc>heap->nused); + HDassert(heap->nalloc>heap->nused); } /* end if */ /* Initialize the new object */ diff --git a/src/H5HGcache.c b/src/H5HGcache.c index f3d0f3a..ee318aa 100644 --- a/src/H5HGcache.c +++ b/src/H5HGcache.c @@ -171,11 +171,12 @@ H5HG_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void UNUSED * udata1, /* Decode each object */ p = heap->chunk + H5HG_SIZEOF_HDR(f); nalloc = H5HG_NOBJS(f, heap->size); - if(NULL == (heap->obj = H5FL_SEQ_MALLOC(H5HG_obj_t, nalloc))) + + /* Calloc the obj array because the file format spec makes no guarantee + * about the order of the objects, and unused slots must be set to zero. + */ + if(NULL == (heap->obj = H5FL_SEQ_CALLOC(H5HG_obj_t, nalloc))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") - heap->obj[0].nrefs = 0; - heap->obj[0].size = 0; - heap->obj[0].begin = NULL; heap->nalloc = nalloc; while(p < (heap->chunk + heap->size)) { @@ -202,14 +203,19 @@ H5HG_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void UNUSED * udata1, /* Determine the new number of objects to index */ new_alloc = MAX(heap->nalloc * 2, (idx + 1)); + HDassert(idx < new_alloc); /* Reallocate array of objects */ if(NULL == (new_obj = H5FL_SEQ_REALLOC(H5HG_obj_t, heap->obj, new_alloc))) HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") + /* Clear newly allocated space */ + HDmemset(&new_obj[heap->nalloc], 0, (new_alloc - heap->nalloc) * sizeof(heap->obj[0])); + /* Update heap information */ heap->nalloc = new_alloc; heap->obj = new_obj; + HDassert(heap->nalloc>heap->nused); } /* end if */ UINT16DECODE(p, heap->obj[idx].nrefs); @@ -220,16 +226,16 @@ H5HG_load(H5F_t *f, hid_t dxpl_id, haddr_t addr, const void UNUSED * udata1, /* * The total storage size includes the size of the object header * and is zero padded so the next object header is properly - * aligned. The last bit of space is the free space object whose - * size is never padded and already includes the object header. + * aligned. The entire obj array was calloc'ed, so no need to zero + * the space here. The last bit of space is the free space object + * whose size is never padded and already includes the object + * header. */ if(idx > 0) { need = H5HG_SIZEOF_OBJHDR(f) + H5HG_ALIGN(heap->obj[idx].size); - /* Check for "gap" in index numbers (caused by deletions) and fill in heap object values */ - if(idx > (max_idx + 1)) - HDmemset(&heap->obj[max_idx + 1], 0, sizeof(H5HG_obj_t) * (idx - (max_idx + 1))); - max_idx = idx; + if(idx > max_idx) + max_idx = idx; } /* end if */ else need = heap->obj[idx].size; |