diff options
Diffstat (limited to 'src/H5C2pkg.h')
| -rw-r--r-- | src/H5C2pkg.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/H5C2pkg.h b/src/H5C2pkg.h index af3ac81..2c49200 100644 --- a/src/H5C2pkg.h +++ b/src/H5C2pkg.h @@ -110,6 +110,33 @@ * * human_readable: Boolean flag that indicates whether the journal file * is to be human readable or machine readable. + * + * offset_width: If human_readable is FALSE, this field contains the + * width of offsets in the HDF5 file in bytes (as + * specified in the superblock -- sizeof_addr in + * H5F_file_t). + * + * If human_readable is TRUE, this field is undefined. + * + * length_width: If human_readable is FALSE, this field contains the + * width of lengths in the HDF5 file in bytes (as + * specified in the super block -- sizeof_size in + * H5F_file_t). + * + * chksum_cur_msg: Boolean flag that is only defined if human_readable + * is false. It is used to indicate whether the current + * journal message must be checksumed. If true, the + * message checksum to date is stored in the msg_chksum + * (discussed below). + * + * If the journal message is being checksumed, this + * field will be set back to FALSE when the checksum + * of the messages is written to buffer. + * + * msg_chksum: uint32_t used to compile the checksum of a binary + * journal file message. Note that not all messages + * are checksumed -- this field is only defined when + * chksum_cur_msg is TRUE. * * journal_is_empty: Boolean flag that indicates if the journal file * associated with the ring buffer is currently @@ -171,6 +198,22 @@ #define H5C2_JNL__JNL_MAGIC_TAG "journal_magic" #define H5C2_JNL__CREATION_DATE_TAG "creation_date" #define H5C2_JNL__HUMAN_READABLE_TAG "human_readable" +#define H5C2_JNL__OFFSET_WIDTH_TAG "offset_width" +#define H5C2_JNL__LENGTH_WIDTH_TAG "length_width" + +/* signatures and versions used to mark the beginnings of journal file + * messages in binary journal files. + */ + +#define H5C2_BJNL__SIG_LEN ((size_t)(4)) +#define H5C2_BJNL__BEGIN_TRANS_SIG "btrn" +#define H5C2_BJNL__BEGIN_TRANS_VER ((uint8_t)(0)) +#define H5C2_BJNL__JOURNAL_ENTRY_SIG "jent" +#define H5C2_BJNL__JOURNAL_ENTRY_VER ((uint8_t)(0)) +#define H5C2_BJNL__END_TRANS_SIG "etrn" +#define H5C2_BJNL__END_TRANS_VER ((uint8_t)(0)) +#define H5C2_BJNL__END_ADDR_SPACE_SIG "eoas" +#define H5C2_BJNL__END_ADDR_SPACE_VER ((uint8_t)(0)) struct H5C2_jbrb_t { @@ -186,6 +229,10 @@ struct H5C2_jbrb_t hbool_t jentry_written; hbool_t use_aio; hbool_t human_readable; + int offset_width; + int length_width; + hbool_t chksum_cur_msg; + uint32_t msg_chksum; hbool_t journal_is_empty; uint64_t cur_trans; uint64_t last_trans_on_disk; |