diff options
Diffstat (limited to 'src/H5Dpkg.h')
| -rw-r--r-- | src/H5Dpkg.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/H5Dpkg.h b/src/H5Dpkg.h index 8b88e92..293d869 100644 --- a/src/H5Dpkg.h +++ b/src/H5Dpkg.h @@ -74,10 +74,13 @@ typedef struct H5D_rdcdc_t { } H5D_rdcdc_t; /* - * A dataset is the following struct. + * A dataset is made of two layers, an H5D_t struct that is unique to + * each instance of an opened datset, and a shared struct that is only + * created once for a given dataset. Thus, if a dataset is opened twice, + * there will be two IDs and two H5D_t structs, both sharing one H5D_shared_t. */ -struct H5D_t { - H5G_entry_t ent; /* cached object header stuff */ +typedef struct H5D_shared_t { + size_t fo_count; /* reference count */ hid_t type_id; /* ID for dataset's datatype */ H5T_t *type; /* datatype of this dataset */ H5S_t *space; /* dataspace of this dataset */ @@ -101,6 +104,11 @@ struct H5D_t { */ H5D_rdcc_t chunk; /* Information about chunked data */ }cache; +} H5D_shared_t; + +struct H5D_t { + H5G_entry_t ent; /* cached object header stuff */ + H5D_shared_t *shared; /* cached information from file */ }; /* Enumerated type for allocating dataset's storage */ |