diff options
Diffstat (limited to 'src/H5Cpkg.h')
| -rw-r--r-- | src/H5Cpkg.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/H5Cpkg.h b/src/H5Cpkg.h index 37068f1..909578b 100644 --- a/src/H5Cpkg.h +++ b/src/H5Cpkg.h @@ -282,6 +282,16 @@ * don't use this at present, I hope that this will allow * some optimizations when I get to it. * + * num_last_entries: The number of entries in the cache that can only be + * flushed after all other entries in the cache have + * been flushed. At this time, this will only ever be + * one entry (the superblock), and the code has been + * protected with HDasserts to enforce this. This restraint + * can certainly be relaxed in the future if the need for + * multiple entries being flushed last arises, though + * explicit tests for that case should be added when said + * HDasserts are removed. + * * With the addition of the fractal heap, the cache must now deal with * the case in which entries may be dirtied, moved, or have their sizes * changed during a flush. To allow sanity checks in this situation, the @@ -878,6 +888,7 @@ struct H5C_t int32_t slist_len; size_t slist_size; H5SL_t * slist_ptr; + int32_t num_last_entries; #if H5C_DO_SANITY_CHECKS int64_t slist_len_increase; int64_t slist_size_increase; @@ -1964,6 +1975,10 @@ if ( (cache_ptr)->index_size != \ } else { \ (cache_ptr)->clean_index_size += (entry_ptr)->size; \ } \ + if ((entry_ptr)->flush_me_last) { \ + (cache_ptr)->num_last_entries++; \ + HDassert((cache_ptr)->num_last_entries == 1); \ + } \ H5C__UPDATE_STATS_FOR_HT_INSERTION(cache_ptr) \ } @@ -1993,6 +2008,10 @@ if ( (cache_ptr)->index_size != \ } else { \ (cache_ptr)->clean_index_size -= (entry_ptr)->size; \ } \ + if ((entry_ptr)->flush_me_last) { \ + (cache_ptr)->num_last_entries--; \ + HDassert((cache_ptr)->num_last_entries == 0); \ + } \ H5C__UPDATE_STATS_FOR_HT_DELETION(cache_ptr) \ } |