diff options
Diffstat (limited to 'src/H5Cimage.c')
| -rw-r--r-- | src/H5Cimage.c | 588 |
1 files changed, 4 insertions, 584 deletions
diff --git a/src/H5Cimage.c b/src/H5Cimage.c index 6d211a4..df60d00 100644 --- a/src/H5Cimage.c +++ b/src/H5Cimage.c @@ -105,21 +105,11 @@ (cache_ptr)->images_loaded++; \ (cache_ptr)->last_image_size = (cache_ptr)->image_len; \ } -#define H5C__UPDATE_STATS_FOR_PREFETCH(cache_ptr, dirty) \ -{ \ - (cache_ptr)->prefetches++; \ - if (dirty) \ - (cache_ptr)->dirty_prefetches++; \ -} -#define H5C__UPDATE_STATS_FOR_PREFETCH_HIT(cache_ptr) \ - (cache_ptr)->prefetch_hits++; /* clang-format on */ #else /* H5C_COLLECT_CACHE_STATS */ #define H5C__UPDATE_STATS_FOR_CACHE_IMAGE_CREATE(cache_ptr) #define H5C__UPDATE_STATS_FOR_CACHE_IMAGE_READ(cache_ptr) #define H5C__UPDATE_STATS_FOR_CACHE_IMAGE_LOAD(cache_ptr) -#define H5C__UPDATE_STATS_FOR_PREFETCH(cache_ptr, dirty) -#define H5C__UPDATE_STATS_FOR_PREFETCH_HIT(cache_ptr) #endif /* H5C_COLLECT_CACHE_STATS */ /******************/ @@ -138,8 +128,6 @@ static herr_t H5C__decode_cache_image_header(const H5F_t *f, H5C_t *cache_ptr, c static herr_t H5C__decode_cache_image_entry(const H5F_t *f, const H5C_t *cache_ptr, const uint8_t **buf, unsigned entry_num); #endif -static herr_t H5C__destroy_pf_entry_child_flush_deps(H5C_t *cache_ptr, H5C_cache_entry_t *pf_entry_ptr, - H5C_cache_entry_t **fd_children); static herr_t H5C__encode_cache_image_header(const H5F_t *f, const H5C_t *cache_ptr, uint8_t **buf); static herr_t H5C__encode_cache_image_entry(H5F_t *f, H5C_t *cache_ptr, uint8_t **buf, unsigned entry_num); static herr_t H5C__prep_for_file_close__compute_fd_heights(const H5C_t *cache_ptr); @@ -171,7 +159,6 @@ H5FL_DEFINE(H5C_cache_entry_t); /*******************/ /*------------------------------------------------------------------------- - * * Function: H5C_cache_image_pending() * * Purpose: Tests to see if the load of a metadata cache image @@ -460,375 +447,6 @@ done: } /* H5C__generate_cache_image() */ /*------------------------------------------------------------------------- - * Function: H5C__deserialize_prefetched_entry() - * - * Purpose: Deserialize the supplied prefetched entry entry, and return - * a pointer to the deserialized entry in *entry_ptr_ptr. - * If successful, remove the prefetched entry from the cache, - * and free it. Insert the deserialized entry into the cache. - * - * Note that the on disk image of the entry is not freed -- - * a pointer to it is stored in the deserialized entries' - * image_ptr field, and its image_up_to_date field is set to - * TRUE unless the entry is dirtied by the deserialize call. - * - * If the prefetched entry is a flush dependency child, - * destroy that flush dependency prior to calling the - * deserialize callback. If appropriate, the flush dependency - * relationship will be recreated by the cache client. - * - * If the prefetched entry is a flush dependency parent, - * destroy the flush dependency relationship with all its - * children. As all these children must be prefetched entries, - * recreate these flush dependency relationships with - * deserialized entry after it is inserted in the cache. - * - * Since deserializing a prefetched entry is semantically - * equivalent to a load, issue an entry loaded nofification - * if the notify callback is defined. - * - * Return: SUCCEED on success, and FAIL on failure. - * - * Note that *entry_ptr_ptr is undefined on failure. - * - * Programmer: John Mainzer, 8/10/15 - * - *------------------------------------------------------------------------- - */ -herr_t -H5C__deserialize_prefetched_entry(H5F_t *f, H5C_t *cache_ptr, H5C_cache_entry_t **entry_ptr_ptr, - const H5C_class_t *type, haddr_t addr, void *udata) -{ - hbool_t dirty = FALSE; /* Flag indicating whether thing was - * dirtied during deserialize - */ - size_t len; /* Size of image in file */ - void *thing = NULL; /* Pointer to thing loaded */ - H5C_cache_entry_t *pf_entry_ptr; /* pointer to the prefetched entry */ - /* supplied in *entry_ptr_ptr. */ - H5C_cache_entry_t *ds_entry_ptr; /* Alias for thing loaded, as cache - * entry - */ - H5C_cache_entry_t **fd_children = NULL; /* Pointer to a dynamically */ - /* allocated array of pointers to */ - /* the flush dependency children of */ - /* the prefetched entry, or NULL if */ - /* that array does not exist. */ - unsigned flush_flags = (H5C__FLUSH_INVALIDATE_FLAG | H5C__FLUSH_CLEAR_ONLY_FLAG); - int i; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* sanity checks */ - HDassert(f); - HDassert(f->shared); - HDassert(f->shared->cache); - HDassert(f->shared->cache == cache_ptr); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - HDassert(entry_ptr_ptr); - HDassert(*entry_ptr_ptr); - pf_entry_ptr = *entry_ptr_ptr; - HDassert(pf_entry_ptr->magic == H5C__H5C_CACHE_ENTRY_T_MAGIC); - HDassert(pf_entry_ptr->type); - HDassert(pf_entry_ptr->type->id == H5AC_PREFETCHED_ENTRY_ID); - HDassert(pf_entry_ptr->prefetched); - HDassert(pf_entry_ptr->image_up_to_date); - HDassert(pf_entry_ptr->image_ptr); - HDassert(pf_entry_ptr->size > 0); - HDassert(pf_entry_ptr->addr == addr); - HDassert(type); - HDassert(type->id == pf_entry_ptr->prefetch_type_id); - HDassert(type->mem_type == cache_ptr->class_table_ptr[type->id]->mem_type); - - /* verify absence of prohibited or unsupported type flag combinations */ - HDassert(!(type->flags & H5C__CLASS_SKIP_READS)); - - /* Can't see how skip reads could be usefully combined with - * either the speculative read flag. Hence disallow. - */ - HDassert(!((type->flags & H5C__CLASS_SKIP_READS) && (type->flags & H5C__CLASS_SPECULATIVE_LOAD_FLAG))); - HDassert(H5F_addr_defined(addr)); - HDassert(type->get_initial_load_size); - HDassert(type->deserialize); - - /* if *pf_entry_ptr is a flush dependency child, destroy all such - * relationships now. The client will restore the relationship(s) with - * the deserialized entry if appropriate. - */ - HDassert(pf_entry_ptr->fd_parent_count == pf_entry_ptr->flush_dep_nparents); - for (i = (int)(pf_entry_ptr->fd_parent_count) - 1; i >= 0; i--) { - HDassert(pf_entry_ptr->flush_dep_parent); - HDassert(pf_entry_ptr->flush_dep_parent[i]); - HDassert(pf_entry_ptr->flush_dep_parent[i]->magic == H5C__H5C_CACHE_ENTRY_T_MAGIC); - HDassert(pf_entry_ptr->flush_dep_parent[i]->flush_dep_nchildren > 0); - HDassert(pf_entry_ptr->fd_parent_addrs); - HDassert(pf_entry_ptr->flush_dep_parent[i]->addr == pf_entry_ptr->fd_parent_addrs[i]); - - if (H5C_destroy_flush_dependency(pf_entry_ptr->flush_dep_parent[i], pf_entry_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTUNDEPEND, FAIL, "can't destroy pf entry parent flush dependency") - - pf_entry_ptr->fd_parent_addrs[i] = HADDR_UNDEF; - } /* end for */ - HDassert(pf_entry_ptr->flush_dep_nparents == 0); - - /* If *pf_entry_ptr is a flush dependency parent, destroy its flush - * dependency relationships with all its children (which must be - * prefetched entries as well). - * - * These flush dependency relationships will have to be restored - * after the deserialized entry is inserted into the cache in order - * to transfer these relationships to the new entry. Hence save the - * pointers to the flush dependency children of *pf_enty_ptr for later - * use. - */ - if (pf_entry_ptr->fd_child_count > 0) { - if (NULL == (fd_children = (H5C_cache_entry_t **)H5MM_calloc( - sizeof(H5C_cache_entry_t **) * (size_t)(pf_entry_ptr->fd_child_count + 1)))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTALLOC, FAIL, "memory allocation failed for fd child ptr array") - - if (H5C__destroy_pf_entry_child_flush_deps(cache_ptr, pf_entry_ptr, fd_children) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTUNDEPEND, FAIL, - "can't destroy pf entry child flush dependency(s).") - } /* end if */ - - /* Since the size of the on disk image is known exactly, there is - * no need for either a call to the get_initial_load_size() callback, - * or retries if the H5C__CLASS_SPECULATIVE_LOAD_FLAG flag is set. - * Similarly, there is no need to clamp possible reads beyond - * EOF. - */ - len = pf_entry_ptr->size; - - /* Deserialize the prefetched on-disk image of the entry into the - * native memory form - */ - if (NULL == (thing = type->deserialize(pf_entry_ptr->image_ptr, len, udata, &dirty))) - HGOTO_ERROR(H5E_CACHE, H5E_CANTLOAD, FAIL, "Can't deserialize image") - ds_entry_ptr = (H5C_cache_entry_t *)thing; - - /* In general, an entry should be clean just after it is loaded. - * - * However, when this code is used in the metadata cache, it is - * possible that object headers will be dirty at this point, as - * the deserialize function will alter object headers if necessary to - * fix an old bug. - * - * In the following assert: - * - * HDassert( ( dirty == FALSE ) || ( type->id == 5 || type->id == 6 ) ); - * - * note that type ids 5 & 6 are associated with object headers in the - * metadata cache. - * - * When we get to using H5C for other purposes, we may wish to - * tighten up the assert so that the loophole only applies to the - * metadata cache. - * - * Note that at present, dirty can't be set to true with prefetched - * entries. However this may change, so include this functionality - * against that possibility. - * - * Also, note that it is possible for a prefetched entry to be dirty -- - * hence the value assigned to ds_entry_ptr->is_dirty below. - */ - - HDassert((dirty == FALSE) || (type->id == 5 || type->id == 6)); - - ds_entry_ptr->magic = H5C__H5C_CACHE_ENTRY_T_MAGIC; - ds_entry_ptr->cache_ptr = f->shared->cache; - ds_entry_ptr->addr = addr; - ds_entry_ptr->size = len; - HDassert(ds_entry_ptr->size < H5C_MAX_ENTRY_SIZE); - ds_entry_ptr->image_ptr = pf_entry_ptr->image_ptr; - ds_entry_ptr->image_up_to_date = !dirty; - ds_entry_ptr->type = type; - ds_entry_ptr->is_dirty = dirty | pf_entry_ptr->is_dirty; - ds_entry_ptr->dirtied = FALSE; - ds_entry_ptr->is_protected = FALSE; - ds_entry_ptr->is_read_only = FALSE; - ds_entry_ptr->ro_ref_count = 0; - ds_entry_ptr->is_pinned = FALSE; - ds_entry_ptr->in_slist = FALSE; - ds_entry_ptr->flush_marker = FALSE; -#ifdef H5_HAVE_PARALLEL - ds_entry_ptr->clear_on_unprotect = FALSE; - ds_entry_ptr->flush_immediately = FALSE; - ds_entry_ptr->coll_access = FALSE; -#endif /* H5_HAVE_PARALLEL */ - ds_entry_ptr->flush_in_progress = FALSE; - ds_entry_ptr->destroy_in_progress = FALSE; - - ds_entry_ptr->ring = pf_entry_ptr->ring; - - /* Initialize flush dependency height fields */ - ds_entry_ptr->flush_dep_parent = NULL; - ds_entry_ptr->flush_dep_nparents = 0; - ds_entry_ptr->flush_dep_parent_nalloc = 0; - ds_entry_ptr->flush_dep_nchildren = 0; - ds_entry_ptr->flush_dep_ndirty_children = 0; - ds_entry_ptr->flush_dep_nunser_children = 0; - - /* Initialize fields supporting the hash table: */ - ds_entry_ptr->ht_next = NULL; - ds_entry_ptr->ht_prev = NULL; - ds_entry_ptr->il_next = NULL; - ds_entry_ptr->il_prev = NULL; - - /* Initialize fields supporting replacement policies: */ - ds_entry_ptr->next = NULL; - ds_entry_ptr->prev = NULL; -#if H5C_MAINTAIN_CLEAN_AND_DIRTY_LRU_LISTS - ds_entry_ptr->aux_next = NULL; - ds_entry_ptr->aux_prev = NULL; -#endif /* H5C_MAINTAIN_CLEAN_AND_DIRTY_LRU_LISTS */ -#ifdef H5_HAVE_PARALLEL - pf_entry_ptr->coll_next = NULL; - pf_entry_ptr->coll_prev = NULL; -#endif /* H5_HAVE_PARALLEL */ - - /* Initialize cache image related fields */ - ds_entry_ptr->include_in_image = FALSE; - ds_entry_ptr->lru_rank = 0; - ds_entry_ptr->image_dirty = FALSE; - ds_entry_ptr->fd_parent_count = 0; - ds_entry_ptr->fd_parent_addrs = NULL; - ds_entry_ptr->fd_child_count = pf_entry_ptr->fd_child_count; - ds_entry_ptr->fd_dirty_child_count = 0; - ds_entry_ptr->image_fd_height = 0; - ds_entry_ptr->prefetched = FALSE; - ds_entry_ptr->prefetch_type_id = 0; - ds_entry_ptr->age = 0; - ds_entry_ptr->prefetched_dirty = pf_entry_ptr->prefetched_dirty; -#ifndef NDEBUG /* debugging field */ - ds_entry_ptr->serialization_count = 0; -#endif - - H5C__RESET_CACHE_ENTRY_STATS(ds_entry_ptr); - - /* Apply to to the newly deserialized entry */ - if (H5C__tag_entry(cache_ptr, ds_entry_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTTAG, FAIL, "Cannot tag metadata entry") - - /* We have successfully deserialized the prefetched entry. - * - * Before we return a pointer to the deserialized entry, we must remove - * the prefetched entry from the cache, discard it, and replace it with - * the deserialized entry. Note that we do not free the prefetched - * entries image, as that has been transferred to the deserialized - * entry. - * - * Also note that we have not yet restored any flush dependencies. This - * must wait until the deserialized entry is inserted in the cache. - * - * To delete the prefetched entry from the cache: - * - * 1) Set pf_entry_ptr->image_ptr to NULL. Since we have already - * transferred the buffer containing the image to *ds_entry_ptr, - * this is not a memory leak. - * - * 2) Call H5C__flush_single_entry() with the H5C__FLUSH_INVALIDATE_FLAG - * and H5C__FLUSH_CLEAR_ONLY_FLAG flags set. - */ - pf_entry_ptr->image_ptr = NULL; - - if (pf_entry_ptr->is_dirty) { - HDassert(((cache_ptr->slist_enabled) && (pf_entry_ptr->in_slist)) || - ((!cache_ptr->slist_enabled) && (!pf_entry_ptr->in_slist))); - - flush_flags |= H5C__DEL_FROM_SLIST_ON_DESTROY_FLAG; - } /* end if */ - - if (H5C__flush_single_entry(f, pf_entry_ptr, flush_flags) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTEXPUNGE, FAIL, "can't expunge prefetched entry") - -#ifndef NDEGUG /* verify deletion */ - H5C__SEARCH_INDEX(cache_ptr, addr, pf_entry_ptr, FAIL); - - HDassert(NULL == pf_entry_ptr); -#endif - - /* Insert the deserialized entry into the cache. */ - H5C__INSERT_IN_INDEX(cache_ptr, ds_entry_ptr, FAIL) - - HDassert(!ds_entry_ptr->in_slist); - if (ds_entry_ptr->is_dirty) - H5C__INSERT_ENTRY_IN_SLIST(cache_ptr, ds_entry_ptr, FAIL) - - H5C__UPDATE_RP_FOR_INSERTION(cache_ptr, ds_entry_ptr, FAIL) - - /* Deserializing a prefetched entry is the conceptual equivalent of - * loading it from file. If the deserialized entry has a notify callback, - * send an "after load" notice now that the deserialized entry is fully - * integrated into the cache. - */ - if (ds_entry_ptr->type->notify && - (ds_entry_ptr->type->notify)(H5C_NOTIFY_ACTION_AFTER_LOAD, ds_entry_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTNOTIFY, FAIL, "can't notify client about entry loaded into cache") - - /* Restore flush dependencies with the flush dependency children of - * of the prefetched entry. Note that we must protect *ds_entry_ptr - * before the call to avoid triggering sanity check failures, and - * then unprotect it afterwards. - */ - i = 0; - if (fd_children != NULL) { - H5C__UPDATE_RP_FOR_PROTECT(cache_ptr, ds_entry_ptr, FAIL) - ds_entry_ptr->is_protected = TRUE; - while (fd_children[i] != NULL) { - /* Sanity checks */ - HDassert((fd_children[i])->magic == H5C__H5C_CACHE_ENTRY_T_MAGIC); - HDassert((fd_children[i])->prefetched); - HDassert((fd_children[i])->fd_parent_count > 0); - HDassert((fd_children[i])->fd_parent_addrs); - -#ifndef NDEBUG - { - int j; - hbool_t found; - - j = 0; - found = FALSE; - while ((j < (int)((fd_children[i])->fd_parent_count)) && (!found)) { - if ((fd_children[i])->fd_parent_addrs[j] == ds_entry_ptr->addr) - found = TRUE; - - j++; - } /* end while */ - HDassert(found); - } -#endif - - if (H5C_create_flush_dependency(ds_entry_ptr, fd_children[i]) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTDEPEND, FAIL, "Can't restore child flush dependency") - - i++; - } /* end while */ - - H5C__UPDATE_RP_FOR_UNPROTECT(cache_ptr, ds_entry_ptr, FAIL); - ds_entry_ptr->is_protected = FALSE; - } /* end if ( fd_children != NULL ) */ - HDassert((unsigned)i == ds_entry_ptr->fd_child_count); - - ds_entry_ptr->fd_child_count = 0; - H5C__UPDATE_STATS_FOR_PREFETCH_HIT(cache_ptr) - - /* finally, pass ds_entry_ptr back to the caller */ - *entry_ptr_ptr = ds_entry_ptr; - -done: - if (fd_children) - fd_children = (H5C_cache_entry_t **)H5MM_xfree((void *)fd_children); - - /* Release resources on error */ - if (FAIL == ret_value) - if (thing && type->free_icr(thing) < 0) - HDONE_ERROR(H5E_CACHE, H5E_CANTFLUSH, FAIL, "free_icr callback failed") - - FUNC_LEAVE_NOAPI(ret_value) -} /* H5C__deserialize_prefetched_entry() */ - -/*------------------------------------------------------------------------- * Function: H5C__free_image_entries_array * * Purpose: If the image entries array exists, free the image @@ -896,7 +514,7 @@ H5C__free_image_entries_array(H5C_t *cache_ptr) } /* H5C__free_image_entries_array() */ /*------------------------------------------------------------------------- - * Function: H5C_get_cache_image_config + * Function: H5C__get_cache_image_config * * Purpose: Copy the current configuration for cache image generation * on file close into the instance of H5C_cache_image_ctl_t @@ -910,11 +528,11 @@ H5C__free_image_entries_array(H5C_t *cache_ptr) *------------------------------------------------------------------------- */ herr_t -H5C_get_cache_image_config(const H5C_t *cache_ptr, H5C_cache_image_ctl_t *config_ptr) +H5C__get_cache_image_config(const H5C_t *cache_ptr, H5C_cache_image_ctl_t *config_ptr) { herr_t ret_value = SUCCEED; /* Return value */ - FUNC_ENTER_NOAPI(FAIL) + FUNC_ENTER_PACKAGE if ((cache_ptr == NULL) || (cache_ptr->magic != H5C__H5C_T_MAGIC)) HGOTO_ERROR(H5E_CACHE, H5E_BADVALUE, FAIL, "Bad cache_ptr on entry") @@ -925,73 +543,7 @@ H5C_get_cache_image_config(const H5C_t *cache_ptr, H5C_cache_image_ctl_t *config done: FUNC_LEAVE_NOAPI(ret_value) -} /* H5C_get_cache_image_config() */ - -/*------------------------------------------------------------------------- - * Function: H5C_image_stats - * - * Purpose: Prints statistics specific to the cache image. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: John Mainzer - * 10/26/15 - * - *------------------------------------------------------------------------- - */ -herr_t -#if H5C_COLLECT_CACHE_STATS -H5C_image_stats(H5C_t *cache_ptr, hbool_t print_header) -#else /* H5C_COLLECT_CACHE_STATS */ -H5C_image_stats(H5C_t *cache_ptr, hbool_t H5_ATTR_UNUSED print_header) -#endif /* H5C_COLLECT_CACHE_STATS */ -{ -#if H5C_COLLECT_CACHE_STATS - int i; - int64_t total_hits = 0; - int64_t total_misses = 0; - double hit_rate; - double prefetch_use_rate; -#endif /* H5C_COLLECT_CACHE_STATS */ - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_NOAPI(FAIL) - - if (!cache_ptr || cache_ptr->magic != H5C__H5C_T_MAGIC) - HGOTO_ERROR(H5E_CACHE, H5E_SYSTEM, FAIL, "Bad cache_ptr") - -#if H5C_COLLECT_CACHE_STATS - for (i = 0; i <= cache_ptr->max_type_id; i++) { - total_hits += cache_ptr->hits[i]; - total_misses += cache_ptr->misses[i]; - } /* end for */ - - if ((total_hits > 0) || (total_misses > 0)) - hit_rate = 100.0 * ((double)(total_hits)) / ((double)(total_hits + total_misses)); - else - hit_rate = 0.0; - - if (cache_ptr->prefetches > 0) - prefetch_use_rate = 100.0 * ((double)(cache_ptr->prefetch_hits)) / ((double)(cache_ptr->prefetches)); - else - prefetch_use_rate = 0.0; - - if (print_header) { - HDfprintf(stdout, "\nhit prefetches prefetch image pf hit\n"); - HDfprintf(stdout, "rate: total: dirty: hits: flshs: evct: size: rate:\n"); - } /* end if */ - - HDfprintf(stdout, "%3.1lf %5lld %5lld %5lld %5lld %5lld %5lld %3.1lf\n", hit_rate, - (long long)(cache_ptr->prefetches), (long long)(cache_ptr->dirty_prefetches), - (long long)(cache_ptr->prefetch_hits), - (long long)(cache_ptr->flushes[H5AC_PREFETCHED_ENTRY_ID]), - (long long)(cache_ptr->evictions[H5AC_PREFETCHED_ENTRY_ID]), - (long long)(cache_ptr->last_image_size), prefetch_use_rate); -#endif /* H5C_COLLECT_CACHE_STATS */ - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5C_image_stats() */ +} /* H5C__get_cache_image_config() */ /*------------------------------------------------------------------------- * Function: H5C__read_cache_image @@ -2010,138 +1562,6 @@ done: #endif /*------------------------------------------------------------------------- - * Function: H5C__destroy_pf_entry_child_flush_deps() - * - * Purpose: Destroy all flush dependencies in this the supplied - * prefetched entry is the parent. Note that the children - * in these flush dependencies must be prefetched entries as - * well. - * - * As this action is part of the process of transferring all - * such flush dependencies to the deserialized version of the - * prefetched entry, ensure that the data necessary to complete - * the transfer is retained. - * - * Note: The current implementation of this function is - * quite inefficient -- mostly due to the current - * implementation of flush dependencies. This should - * be fixed at some point. - * - * Return: Non-negative on success/Negative on failure - * - * Programmer: John Mainzer - * 8/11/15 - * - *------------------------------------------------------------------------- - */ -static herr_t -H5C__destroy_pf_entry_child_flush_deps(H5C_t *cache_ptr, H5C_cache_entry_t *pf_entry_ptr, - H5C_cache_entry_t **fd_children) -{ - H5C_cache_entry_t *entry_ptr; -#ifndef NDEBUG - unsigned entries_visited = 0; -#endif - int fd_children_found = 0; - hbool_t found; - herr_t ret_value = SUCCEED; /* Return value */ - - FUNC_ENTER_PACKAGE - - /* Sanity checks */ - HDassert(cache_ptr); - HDassert(cache_ptr->magic == H5C__H5C_T_MAGIC); - HDassert(pf_entry_ptr); - HDassert(pf_entry_ptr->magic == H5C__H5C_CACHE_ENTRY_T_MAGIC); - HDassert(pf_entry_ptr->type); - HDassert(pf_entry_ptr->type->id == H5AC_PREFETCHED_ENTRY_ID); - HDassert(pf_entry_ptr->prefetched); - HDassert(pf_entry_ptr->fd_child_count > 0); - HDassert(fd_children); - - /* Scan each entry on the index list */ - entry_ptr = cache_ptr->il_head; - while (entry_ptr != NULL) { - HDassert(entry_ptr->magic == H5C__H5C_CACHE_ENTRY_T_MAGIC); - - /* Here we look at entry_ptr->flush_dep_nparents and not - * entry_ptr->fd_parent_count as it is possible that some - * or all of the prefetched flush dependency child relationships - * have already been destroyed. - */ - if (entry_ptr->prefetched && (entry_ptr->flush_dep_nparents > 0)) { - unsigned u; /* Local index variable */ - - /* Re-init */ - u = 0; - found = FALSE; - - /* Sanity checks */ - HDassert(entry_ptr->type); - HDassert(entry_ptr->type->id == H5AC_PREFETCHED_ENTRY_ID); - HDassert(entry_ptr->fd_parent_count >= entry_ptr->flush_dep_nparents); - HDassert(entry_ptr->fd_parent_addrs); - HDassert(entry_ptr->flush_dep_parent); - - /* Look for correct entry */ - while (!found && (u < entry_ptr->fd_parent_count)) { - /* Sanity check entry */ - HDassert(entry_ptr->flush_dep_parent[u]); - HDassert(entry_ptr->flush_dep_parent[u]->magic == H5C__H5C_CACHE_ENTRY_T_MAGIC); - - /* Correct entry? */ - if (pf_entry_ptr == entry_ptr->flush_dep_parent[u]) - found = TRUE; - - u++; - } /* end while */ - - if (found) { - HDassert(NULL == fd_children[fd_children_found]); - - /* Remove flush dependency */ - fd_children[fd_children_found] = entry_ptr; - fd_children_found++; - if (H5C_destroy_flush_dependency(pf_entry_ptr, entry_ptr) < 0) - HGOTO_ERROR(H5E_CACHE, H5E_CANTUNDEPEND, FAIL, - "can't destroy pf entry child flush dependency") - -#ifndef NDEBUG - /* Sanity check -- verify that the address of the parent - * appears in entry_ptr->fd_parent_addrs. Must do a search, - * as with flush dependency creates and destroys, - * entry_ptr->fd_parent_addrs and entry_ptr->flush_dep_parent - * can list parents in different order. - */ - found = FALSE; - u = 0; - while (!found && u < entry_ptr->fd_parent_count) { - if (pf_entry_ptr->addr == entry_ptr->fd_parent_addrs[u]) - found = TRUE; - u++; - } /* end while */ - HDassert(found); -#endif - } /* end if */ - } /* end if */ - -#ifndef NDEBUG - entries_visited++; -#endif - entry_ptr = entry_ptr->il_next; - } /* end while */ - - /* Post-op sanity checks */ - HDassert(NULL == fd_children[fd_children_found]); - HDassert((unsigned)fd_children_found == pf_entry_ptr->fd_child_count); - HDassert(entries_visited == cache_ptr->index_len); - HDassert(!pf_entry_ptr->is_pinned); - -done: - FUNC_LEAVE_NOAPI(ret_value) -} /* H5C__destroy_pf_entry_child_flush_deps() */ - -/*------------------------------------------------------------------------- * Function: H5C__encode_cache_image_header() * * Purpose: Encode the metadata cache image buffer header in the |