mtr0types.h

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/** @file include/mtr0types.h
 Mini-transaction buffer global types

 Created 11/26/1995 Heikki Tuuri
 *******************************************************/

#ifndef mtr0types_h
#define mtr0types_h

#include "sync0rw.h"

struct mtr_t;

/** Logging modes for a mini-transaction */
enum mtr_log_t {
  /** Default mode: log all operations modifying disk-based data */
  MTR_LOG_ALL = 0,

  /** Log no operations and dirty pages are not added to the flush list */
  MTR_LOG_NONE = 1,

  /** Don't generate REDO log but add dirty pages to flush list */
  MTR_LOG_NO_REDO = 2,

  /** Inserts are logged in a shorter form */
  MTR_LOG_SHORT_INSERTS = 3,

  /** Last element */
  MTR_LOG_MODE_MAX = 4
};

/** @name Log item types
The log items are declared 'byte' so that the compiler can warn if val
and type parameters are switched in a call to mlog_write_ulint. NOTE!
For 1 - 8 bytes, the flag value must give the length also! @{ */
enum mlog_id_t {
  /** if the mtr contains only one log record for one page,
  i.e., write_initial_log_record has been called only once,
  this flag is ORed to the type of that first log record */
  MLOG_SINGLE_REC_FLAG = 128,

  /** one byte is written */
  MLOG_1BYTE = 1,

  /** 2 bytes ... */
  MLOG_2BYTES = 2,

  /** 4 bytes ... */
  MLOG_4BYTES = 4,

  /** 8 bytes ... */
  MLOG_8BYTES = 8,

  /** Record insert */
  MLOG_REC_INSERT = 9,

  /** Mark clustered index record deleted */
  MLOG_REC_CLUST_DELETE_MARK = 10,

  /** Mark secondary index record deleted */
  MLOG_REC_SEC_DELETE_MARK = 11,

  /** update of a record, preserves record field sizes */
  MLOG_REC_UPDATE_IN_PLACE = 13,

  /*!< Delete a record from a page */
  MLOG_REC_DELETE = 14,

  /** Delete record list end on index page */
  MLOG_LIST_END_DELETE = 15,

  /** Delete record list start on index page */
  MLOG_LIST_START_DELETE = 16,

  /** Copy record list end to a new created index page */
  MLOG_LIST_END_COPY_CREATED = 17,

  /** Reorganize an index page in ROW_FORMAT=REDUNDANT */
  MLOG_PAGE_REORGANIZE = 18,

  /** Create an index page */
  MLOG_PAGE_CREATE = 19,

  /** Insert entry in an undo log */
  MLOG_UNDO_INSERT = 20,

  /** erase an undo log page end */
  MLOG_UNDO_ERASE_END = 21,

  /** initialize a page in an undo log */
  MLOG_UNDO_INIT = 22,

  /** reuse an insert undo log header */
  MLOG_UNDO_HDR_REUSE = 24,

  /** create an undo log header */
  MLOG_UNDO_HDR_CREATE = 25,

  /** mark an index record as the predefined minimum record */
  MLOG_REC_MIN_MARK = 26,

  /** initialize an ibuf bitmap page */
  MLOG_IBUF_BITMAP_INIT = 27,

#ifdef UNIV_LOG_LSN_DEBUG
  /** Current LSN */
  MLOG_LSN = 28,
#endif /* UNIV_LOG_LSN_DEBUG */

  /** this means that a file page is taken into use and the prior
  contents of the page should be ignored: in recovery we must not
  trust the lsn values stored to the file page.
  Note: it's deprecated because it causes crash recovery problem
  in bulk create index, and actually we don't need to reset page
  lsn in recv_recover_page_func() now. */
  MLOG_INIT_FILE_PAGE = 29,

  /** write a string to a page */
  MLOG_WRITE_STRING = 30,

  /** If a single mtr writes several log records, this log
  record ends the sequence of these records */
  MLOG_MULTI_REC_END = 31,

  /** dummy log record used to pad a log block full */
  MLOG_DUMMY_RECORD = 32,

  /** log record about creating an .ibd file, with format */
  MLOG_FILE_CREATE = 33,

  /** rename a tablespace file that starts with (space_id,page_no) */
  MLOG_FILE_RENAME = 34,

  /** delete a tablespace file that starts with (space_id,page_no) */
  MLOG_FILE_DELETE = 35,

  /** mark a compact index record as the predefined minimum record */
  MLOG_COMP_REC_MIN_MARK = 36,

  /** create a compact index page */
  MLOG_COMP_PAGE_CREATE = 37,

  /** compact record insert */
  MLOG_COMP_REC_INSERT = 38,

  /** mark compact clustered index record deleted */
  MLOG_COMP_REC_CLUST_DELETE_MARK = 39,

  /** mark compact secondary index record deleted; this log
  record type is redundant, as MLOG_REC_SEC_DELETE_MARK is
  independent of the record format. */
  MLOG_COMP_REC_SEC_DELETE_MARK = 40,

  /** update of a compact record, preserves record field sizes */
  MLOG_COMP_REC_UPDATE_IN_PLACE = 41,

  /** delete a compact record from a page */
  MLOG_COMP_REC_DELETE = 42,

  /** delete compact record list end on index page */
  MLOG_COMP_LIST_END_DELETE = 43,

  /*** delete compact record list start on index page */
  MLOG_COMP_LIST_START_DELETE = 44,

  /** copy compact record list end to a new created index page */
  MLOG_COMP_LIST_END_COPY_CREATED = 45,

  /** reorganize an index page */
  MLOG_COMP_PAGE_REORGANIZE = 46,

  /** write the node pointer of a record on a compressed
  non-leaf B-tree page */
  MLOG_ZIP_WRITE_NODE_PTR = 48,

  /** write the BLOB pointer of an externally stored column
  on a compressed page */
  MLOG_ZIP_WRITE_BLOB_PTR = 49,

  /** write to compressed page header */
  MLOG_ZIP_WRITE_HEADER = 50,

  /** compress an index page */
  MLOG_ZIP_PAGE_COMPRESS = 51,

  /** compress an index page without logging it's image */
  MLOG_ZIP_PAGE_COMPRESS_NO_DATA = 52,

  /** reorganize a compressed page */
  MLOG_ZIP_PAGE_REORGANIZE = 53,

  /** Create a R-Tree index page */
  MLOG_PAGE_CREATE_RTREE = 57,

  /** create a R-tree compact page */
  MLOG_COMP_PAGE_CREATE_RTREE = 58,

  /** this means that a file page is taken into use.
  We use it to replace MLOG_INIT_FILE_PAGE. */
  MLOG_INIT_FILE_PAGE2 = 59,

  /** Table is being truncated. (Marked only for file-per-table) */
  /* MLOG_TRUNCATE = 60,  Disabled for WL6378 */

  /** notify that an index tree is being loaded without writing
  redo log about individual pages */
  MLOG_INDEX_LOAD = 61,

  /** log for some persistent dynamic metadata change */
  MLOG_TABLE_DYNAMIC_META = 62,

  /** create a SDI index page */
  MLOG_PAGE_CREATE_SDI = 63,

  /** create a SDI compact page */
  MLOG_COMP_PAGE_CREATE_SDI = 64,

  /** Used in tests of redo log. It must never be used outside unit tests. */
  MLOG_TEST = 65,

  /** biggest value (used in assertions) */
  MLOG_BIGGEST_TYPE = MLOG_TEST
};

/* @} */

/** Types for the mlock objects to store in the mtr memo; NOTE that the
first 3 values must be RW_S_LATCH, RW_X_LATCH, RW_NO_LATCH */
enum mtr_memo_type_t {
  MTR_MEMO_PAGE_S_FIX = RW_S_LATCH,

  MTR_MEMO_PAGE_X_FIX = RW_X_LATCH,

  MTR_MEMO_PAGE_SX_FIX = RW_SX_LATCH,

  MTR_MEMO_BUF_FIX = RW_NO_LATCH,

#ifdef UNIV_DEBUG
  MTR_MEMO_MODIFY = 32,
#endif /* UNIV_DEBUG */

  MTR_MEMO_S_LOCK = 64,

  MTR_MEMO_X_LOCK = 128,

  MTR_MEMO_SX_LOCK = 256
};

#ifdef UNIV_DEBUG
#define MTR_MAGIC_N 54551
#endif /* UNIV_DEBUG */

enum mtr_state_t {
  MTR_STATE_INIT = 0,
  MTR_STATE_ACTIVE = 12231,
  MTR_STATE_COMMITTING = 56456,
  MTR_STATE_COMMITTED = 34676
};

#endif /* mtr0types_h */