diff options
Diffstat (limited to 'src/H5Cprivate.h')
| -rw-r--r-- | src/H5Cprivate.h | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/src/H5Cprivate.h b/src/H5Cprivate.h index 1cd1e38..9db33d2 100644 --- a/src/H5Cprivate.h +++ b/src/H5Cprivate.h @@ -70,9 +70,8 @@ #define H5C__CLASS_SPECULATIVE_LOAD_FLAG ((unsigned)0x1) #define H5C__CLASS_COMPRESSED_FLAG ((unsigned)0x2) /* The following flags may only appear in test code */ -#define H5C__CLASS_NO_IO_FLAG ((unsigned)0x4) -#define H5C__CLASS_SKIP_READS ((unsigned)0x8) -#define H5C__CLASS_SKIP_WRITES ((unsigned)0x10) +#define H5C__CLASS_SKIP_READS ((unsigned)0x4) +#define H5C__CLASS_SKIP_WRITES ((unsigned)0x8) /* Flags for pre-serialize callback */ #define H5C__SERIALIZE_NO_FLAGS_SET ((unsigned)0) @@ -365,12 +364,6 @@ typedef struct H5C_t H5C_t; * * The following flags may only appear in test code. * - * H5C__CLASS_NO_IO_FLAG: This flag is intended only for use in test - * code. When it is set, any attempt to load an entry of - * the type with this flag set will trigger an assertion - * failure, and any flush of an entry with this flag set - * will not result in any write to file. - * * H5C__CLASS_SKIP_READS: This flags is intended only for use in test * code. When it is set, reads on load will be skipped, * and an uninitialize buffer will be passed to the @@ -1474,7 +1467,7 @@ typedef int H5C_ring_t; * * Fields supporting the hash table: * - * Fields in the cache are indexed by a more or less conventional hash table. + * Entries in the cache are indexed by a more or less conventional hash table. * If there are multiple entries in any hash bin, they are stored in a doubly * linked list. * @@ -1561,6 +1554,28 @@ typedef int H5C_ring_t; * In either case, when there is no previous item, it should * be NULL. * + * + * Fields supporting tagged entries: + * + * Entries in the cache that belong to a single object in the file are + * joined into a doubly-linked list, and are "tagged" with the object header + * address for that object's base header "chunk" (which is used as the + * canonical address for the object). Global and shared entries are + * not tagged. Tagged entries have a pointer to the tag info for the object, + * which is shared state for all the entries for that object. + * + * tl_next: Pointer to the next entry in the tag list for an object. + * NULL for the tail entry in the list, as well as untagged + * entries. + * + * tl_prev: Pointer to the previous entry in the tag list for an object. + * NULL for the head entry in the list, as well as untagged + * entries. + * + * tag_info: Pointer to the common tag state for all entries belonging to + * an object. NULL for untagged entries. + * + * * Cache entry stats collection fields: * * These fields should only be compiled in when both H5C_COLLECT_CACHE_STATS |