diff options
Diffstat (limited to 'src/H5Fpkg.h')
| -rw-r--r-- | src/H5Fpkg.h | 89 |
1 files changed, 78 insertions, 11 deletions
diff --git a/src/H5Fpkg.h b/src/H5Fpkg.h index d0f1b26..c9d2f46 100644 --- a/src/H5Fpkg.h +++ b/src/H5Fpkg.h @@ -71,6 +71,58 @@ /* Macro to abstract checking whether file is using a free space manager */ #define H5F_HAVE_FREE_SPACE_MANAGER(F) TRUE /* Currently always have a free space manager */ +/* Macros for encoding/decoding superblock */ +#define H5F_MAX_DRVINFOBLOCK_SIZE 1024 /* Maximum size of superblock driver info buffer */ +#define H5F_DRVINFOBLOCK_HDR_SIZE 16 /* Size of superblock driver info header */ + +/* Superblock sizes for various versions */ +#define H5F_SIZEOF_CHKSUM 4 /* Checksum size in the file */ + +/* Fixed-size portion at the beginning of all superblocks */ +#define H5F_SUPERBLOCK_FIXED_SIZE ( H5F_SIGNATURE_LEN \ + + 1) /* superblock version */ + +/* Macros for computing variable-size superblock size */ +#define H5F_SUPERBLOCK_VARLEN_SIZE_COMMON \ + (2 /* freespace, and root group versions */ \ + + 1 /* reserved */ \ + + 3 /* shared header vers, size of address, size of lengths */ \ + + 1 /* reserved */ \ + + 4 /* group leaf k, group internal k */ \ + + 4) /* consistency flags */ +#define H5F_SUPERBLOCK_VARLEN_SIZE_V0(f) \ + ( H5F_SUPERBLOCK_VARLEN_SIZE_COMMON /* Common variable-length info */ \ + + H5F_SIZEOF_ADDR(f) /* base address */ \ + + H5F_SIZEOF_ADDR(f) /* <unused> */ \ + + H5F_SIZEOF_ADDR(f) /* EOF address */ \ + + H5F_SIZEOF_ADDR(f) /* driver block address */ \ + + H5G_SIZEOF_ENTRY(f)) /* root group ptr */ +#define H5F_SUPERBLOCK_VARLEN_SIZE_V1(f) \ + ( H5F_SUPERBLOCK_VARLEN_SIZE_COMMON /* Common variable-length info */ \ + + 2 /* indexed B-tree internal k */ \ + + 2 /* reserved */ \ + + H5F_SIZEOF_ADDR(f) /* base address */ \ + + H5F_SIZEOF_ADDR(f) /* <unused> */ \ + + H5F_SIZEOF_ADDR(f) /* EOF address */ \ + + H5F_SIZEOF_ADDR(f) /* driver block address */ \ + + H5G_SIZEOF_ENTRY(f)) /* root group ptr */ +#define H5F_SUPERBLOCK_VARLEN_SIZE_V2(f) \ + ( 2 /* size of address, size of lengths */ \ + + 1 /* consistency flags */ \ + + H5F_SIZEOF_ADDR(f) /* base address */ \ + + H5F_SIZEOF_ADDR(f) /* superblock extension address */ \ + + H5F_SIZEOF_ADDR(f) /* EOF address */ \ + + H5F_SIZEOF_ADDR(f) /* root group object header address */ \ + + H5F_SIZEOF_CHKSUM) /* superblock checksum (keep this last) */ +#define H5F_SUPERBLOCK_VARLEN_SIZE(v, f) ( \ + (v == 0 ? H5F_SUPERBLOCK_VARLEN_SIZE_V0(f) : 0) \ + + (v == 1 ? H5F_SUPERBLOCK_VARLEN_SIZE_V1(f) : 0) \ + + (v == 2 ? H5F_SUPERBLOCK_VARLEN_SIZE_V2(f) : 0)) + +/* Total size of superblock, depends on superblock version */ +#define H5F_SUPERBLOCK_SIZE(v, f) ( H5F_SUPERBLOCK_FIXED_SIZE \ + + H5F_SUPERBLOCK_VARLEN_SIZE(v, f)) + /* Structure for metadata & "small [raw] data" block aggregation fields */ struct H5F_blk_aggr_t { @@ -113,6 +165,23 @@ typedef struct H5F_mtab_t { H5F_mount_t *child; /* An array of mount records */ } H5F_mtab_t; +/* Structure specifically to store superblock. This was originally + * maintained entirely within H5F_file_t, but is now extracted + * here because the superblock is now handled by the cache */ +typedef struct H5F_super_t { + H5AC_info_t cache_info; /* Cache entry information structure */ + unsigned super_vers; /* Superblock version */ + uint8_t status_flags; /* File status flags */ + unsigned sym_leaf_k; /* Size of leaves in symbol tables */ + unsigned btree_k[H5B_NUM_BTREE_ID]; /* B-tree key values for each type */ + haddr_t base_addr; /* Absolute base address for rel.addrs. */ + /* (superblock for file is at this offset) */ + haddr_t ext_addr; /* Relative address of superblock extension */ + haddr_t driver_addr; /* File driver information block address */ + haddr_t root_addr; /* Root group address */ + H5G_entry_t *root_ent; /* Root group symbol table entry */ +} H5F_super_t; + /* * Define the structure to store the file information for HDF5 files. One of * these structures is allocated per file, not per H5Fopen(). That is, set of @@ -122,23 +191,18 @@ typedef struct H5F_mtab_t { */ typedef struct H5F_file_t { H5FD_t *lf; /* Lower level file handle for I/O */ + H5F_super_t *sblock; /* Pointer to (pinned) superblock for file */ + haddr_t super_addr; /* Address of superblock signature */ unsigned nrefs; /* Ref count for times file is opened */ - uint8_t status_flags; /* File status flags */ unsigned flags; /* Access Permissions for file */ H5F_mtab_t mtab; /* File mount table */ /* Cached values from FCPL/superblock */ - unsigned sym_leaf_k; /* Size of leaves in symbol tables */ - unsigned btree_k[H5B_NUM_BTREE_ID]; /* B-tree key values for each type */ size_t sizeof_addr; /* Size of addresses in file */ size_t sizeof_size; /* Size of offsets in file */ - haddr_t base_addr; /* Absolute base address for rel.addrs. */ - /* (superblock for file is at this offset) */ - haddr_t extension_addr; /* Relative address of superblock extension */ haddr_t sohm_addr; /* Relative address of shared object header message table */ unsigned sohm_vers; /* Version of shared message table on disk */ unsigned sohm_nindexes; /* Number of shared messages indexes in the table */ - haddr_t driver_addr; /* File driver information block address*/ unsigned long feature_flags; /* VFL Driver feature Flags */ haddr_t maxaddr; /* Maximum address for file */ @@ -159,12 +223,9 @@ typedef struct H5F_file_t { unsigned gc_ref; /* Garbage-collect references? */ hbool_t latest_format; /* Always use the latest format? */ hbool_t store_msg_crt_idx; /* Store creation index for object header messages? */ - hbool_t fam_to_sec2; /* Is h5repart changing driver from family to sec2? */ int ncwfs; /* Num entries on cwfs list */ struct H5HG_heap_t **cwfs; /* Global heap cache */ struct H5G_t *root_grp; /* Open root group */ - H5G_entry_t *root_ent; /* Root group symbol table entry */ - haddr_t root_addr; /* Root group address */ H5FO_t *open_objs; /* Open objects in file */ H5RC_t *grp_btree_shared; /* Ref-counted group B-tree node info */ @@ -217,6 +278,8 @@ H5FL_EXTERN(H5F_t); /* Declare a free list to manage the H5F_file_t struct */ H5FL_EXTERN(H5F_file_t); +H5_DLLVAR const H5AC_class_t H5AC_SUPERBLOCK[1]; + /******************************/ /* Package Private Prototypes */ @@ -233,10 +296,14 @@ H5_DLL herr_t H5F_mount_count_ids(H5F_t *f, unsigned *nopen_files, unsigned *nop /* Superblock related routines */ H5_DLL herr_t H5F_super_init(H5F_t *f, hid_t dxpl_id); -H5_DLL herr_t H5F_super_write(H5F_t *f, hid_t dxpl_id); H5_DLL herr_t H5F_super_read(H5F_t *f, hid_t dxpl_id); H5_DLL herr_t H5F_super_size(H5F_t *f, hid_t dxpl_id, hsize_t *super_size, hsize_t *super_ext_size); +/* Superblock extension related routines */ +H5_DLL herr_t H5F_super_ext_open(H5F_t *f, haddr_t ext_addr, H5O_loc_t *ext_ptr); +H5_DLL herr_t H5F_super_ext_write_msg(H5F_t *f, hid_t dxpl_id, void *mesg, unsigned id, hbool_t may_create); +H5_DLL herr_t H5F_super_ext_close(H5F_t *f, H5O_loc_t *ext_ptr); + /* Metadata accumulator routines */ H5_DLL htri_t H5F_accum_read(const H5F_t *f, hid_t dxpl_id, H5FD_mem_t type, haddr_t addr, size_t size, void *buf); |