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4a3a46af13
innobase/btr/btr0btr.c: Eliminate some buf_frame_align() calls. Make use of the page_rec_is_infimum(), page_rec_is_supremum() and page_rec_is_user_rec() functions. Replace some index->table->comp with page_is_comp(). Eliminate some variables to reduce register spilling on x86. Note that page_is_comp() may return nonzero instead of TRUE. Note that rec_offs_comp() may return nonzero instead of TRUE. innobase/btr/btr0cur.c: Eliminate some buf_frame_align() calls. Replace some index->table->comp with page_is_comp() or rec_offs_comp(). Eliminate some variables to reduce register spilling on x86. Note that page_is_comp() may return nonzero instead of TRUE. Note that rec_offs_comp() may return nonzero instead of TRUE. Remove an extra mem_heap_create() call from btr_cur_update_in_place(). Add "page" parameter to lock_rec_store_on_page_infimum(). Add some UNIV_LIKELY() and UNIV_UNLIKELY() hints. btr_estimate_number_of_different_key_vals(): Rename the offsets_* variables to be more descriptive and eliminate one rec_get_offsets() and one page_rec_get_next() call in the loop. innobase/btr/btr0pcur.c: Eliminate some buf_frame_align() calls. Make use of the page_rec_is_infimum(), page_rec_is_supremum() and page_rec_is_user_rec() functions. Replace some index->table->comp with page_is_comp(). Eliminate some variables to reduce register spilling on x86. Note that page_is_comp() may return nonzero instead of TRUE. Make some ut_a() assertions ut_ad() ones to improve performance. Add some UNIV_LIKELY() and UNIV_UNLIKELY() hints. innobase/btr/btr0sea.c: Make use of page_rec_is_infimum() and page_rec_is_supremum(). Eliminate some buf_frame_align() calls. Add some UNIV_UNLIKELY and UNIV_LIKELY hints. Turn some assertions into debug assertions. innobase/dict/dict0crea.c: Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp innobase/ibuf/ibuf0ibuf.c: Make use of page_rec_is_infimum() and page_rec_is_supremum(). Add some UNIV_UNLIKELY and UNIV_LIKELY hints. ibuf_get_merge_page_nos(): Rename parameter "first_rec" to "rec" and eliminate local variable "rec". innobase/include/btr0btr.h: Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp innobase/include/buf0buf.h: Rename buf_frame_get_modify_clock() to buf_block_get_modify_clock(). innobase/include/buf0buf.ic: Rename buf_frame_get_modify_clock() to buf_block_get_modify_clock() and remove the buf_block_align() call. innobase/include/lock0lock.h: lock_rec_store_on_page_infimum(): Add parameter "page" innobase/include/mach0data.h: Add mach_encode_2() and mach_decode_2(). innobase/include/mach0data.ic: Add mach_encode_2() and mach_decode_2(). innobase/include/page0cur.h: Add const qualifier to page_cur_is_before_first() and page_cur_is_after_last(). innobase/include/page0cur.ic: Make use of page_rec_is_infimum() and page_rec_is_supremum(). innobase/include/page0page.h: Remove page_rec_is_first_user_rec() and page_rec_is_last_user_rec(). Add page_rec_is_infimum() and page_rec_is_supremum(). Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp. innobase/include/page0page.ic: Remove page_rec_is_first_user_rec() and page_rec_is_last_user_rec(). Add page_rec_is_infimum() and page_rec_is_supremum(). Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp. Add UNIV_UNLIKELY, UNIV_LIKELY and UNIV_EXPECT hints. Reduce the number of buf_frame_align() calls. innobase/include/rem0rec.ic: rec_offs_comp(): Return zero or nonzero instead of FALSE or TRUE. innobase/include/row0mysql.h: Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp. innobase/lock/lock0lock.c: Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp. Remove parameter "comp" from lock_rec_get_next(), lock_rec_has_expl() and lock_rec_other_has_expl_req(). Add parameter "page" to lock_rec_store_on_page_infimum(). Add UNIV_UNLIKELY hints. Reduce the number of buf_frame_align() calls. Make use of page_rec_is_infimum(), page_rec_is_supremum() and page_rec_is_user_rec(). Move the "comp" flag outside some loops. innobase/mtr/mtr0log.c: Replace index->table->comp with page_rec_is_comp(). innobase/page/page0cur.c: Replace index->table->comp with page_is_comp() or page_rec_is_comp(). Eliminate some buf_frame_align() calls. Add some debug assertions. innobase/page/page0page.c: Optimize page_dir_find_owner_slot(). Compare the record offset 16 bits at a time, because that seems to be the only way to avoid register spilling on x86. Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp. Remove parameter "page" of page_delete_rec_list_write_log(). Make use of page_rec_is_infimum(). innobase/rem/rem0cmp.c: Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp. innobase/row/row0ins.c: Make use of page_rec_is_infimum() and page_rec_is_supremum(). Reduce the amount of buf_frame_align() calls. row_ins_index_entry_low(): Disable assertion about column count unless #ifdef UNIV_DEBUG. innobase/row/row0mysql.c: Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp. innobase/row/row0row.c: Eliminate some buf_frame_align() calls. Make use of page_rec_is_infimum(). innobase/row/row0sel.c: Make use of page_rec_is_supremum() and page_rec_is_infimum(). Turn some assertions into debug assertions. Add UNIV_LIKELY and UNIV_UNLIKELY hints. row_search_for_mysql(): Eliminate local variables "moved", "cons_read_requires_clust_rec", "was_lock_wait", "shortcut", "success" and "comp". Replace some of them with goto's. Disable variable "cnt" unless #ifdef UNIV_SEARCH_DEBUG. innobase/row/row0vers.c: Replace FALSE/TRUE ibool comp with zero/nonzero ulint comp. Replace index->table->comp with page_rec_is_comp(). Eliminate some buf_frame_align() calls.
334 lines
12 KiB
C
334 lines
12 KiB
C
/**********************************************************************
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Utilities for converting data from the database file
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to the machine format.
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(c) 1995 Innobase Oy
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Created 11/28/1995 Heikki Tuuri
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***********************************************************************/
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#ifndef mach0data_h
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#define mach0data_h
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#include "univ.i"
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#include "ut0byte.h"
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/* The data and all fields are always stored in a database file
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in the same format: ascii, big-endian, ... .
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All data in the files MUST be accessed using the functions in this
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module. */
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/***********************************************************
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The following function is used to store data in one byte. */
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UNIV_INLINE
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void
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mach_write_to_1(
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/*============*/
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byte* b, /* in: pointer to byte where to store */
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ulint n); /* in: ulint integer to be stored, >= 0, < 256 */
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/************************************************************
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The following function is used to fetch data from one byte. */
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UNIV_INLINE
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ulint
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mach_read_from_1(
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/*=============*/
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/* out: ulint integer, >= 0, < 256 */
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byte* b); /* in: pointer to byte */
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/***********************************************************
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The following function is used to store data in two consecutive
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bytes. We store the most significant byte to the lower address. */
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UNIV_INLINE
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void
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mach_write_to_2(
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/*============*/
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byte* b, /* in: pointer to two bytes where to store */
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ulint n); /* in: ulint integer to be stored, >= 0, < 64k */
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/************************************************************
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The following function is used to fetch data from two consecutive
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bytes. The most significant byte is at the lowest address. */
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UNIV_INLINE
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ulint
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mach_read_from_2(
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/*=============*/
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/* out: ulint integer, >= 0, < 64k */
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byte* b); /* in: pointer to two bytes */
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/************************************************************
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The following function is used to convert a 16-bit data item
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to the canonical format, for fast bytewise equality test
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against memory. */
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UNIV_INLINE
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uint16
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mach_encode_2(
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/*==========*/
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/* out: 16-bit integer in canonical format */
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ulint n); /* in: integer in machine-dependent format */
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/************************************************************
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The following function is used to convert a 16-bit data item
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from the canonical format, for fast bytewise equality test
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against memory. */
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UNIV_INLINE
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ulint
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mach_decode_2(
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/*==========*/
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/* out: integer in machine-dependent format */
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uint16 n); /* in: 16-bit integer in canonical format */
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/***********************************************************
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The following function is used to store data in 3 consecutive
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bytes. We store the most significant byte to the lowest address. */
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UNIV_INLINE
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void
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mach_write_to_3(
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/*============*/
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byte* b, /* in: pointer to 3 bytes where to store */
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ulint n); /* in: ulint integer to be stored */
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/************************************************************
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The following function is used to fetch data from 3 consecutive
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bytes. The most significant byte is at the lowest address. */
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UNIV_INLINE
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ulint
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mach_read_from_3(
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/*=============*/
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/* out: ulint integer */
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byte* b); /* in: pointer to 3 bytes */
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/***********************************************************
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The following function is used to store data in four consecutive
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bytes. We store the most significant byte to the lowest address. */
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UNIV_INLINE
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void
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mach_write_to_4(
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/*============*/
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byte* b, /* in: pointer to four bytes where to store */
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ulint n); /* in: ulint integer to be stored */
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/************************************************************
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The following function is used to fetch data from 4 consecutive
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bytes. The most significant byte is at the lowest address. */
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UNIV_INLINE
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ulint
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mach_read_from_4(
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/*=============*/
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/* out: ulint integer */
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byte* b); /* in: pointer to four bytes */
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/*************************************************************
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Writes a ulint in a compressed form (1..5 bytes). */
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UNIV_INLINE
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ulint
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mach_write_compressed(
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/*==================*/
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/* out: stored size in bytes */
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byte* b, /* in: pointer to memory where to store */
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ulint n); /* in: ulint integer to be stored */
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/*************************************************************
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Returns the size of an ulint when written in the compressed form. */
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UNIV_INLINE
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ulint
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mach_get_compressed_size(
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/*=====================*/
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/* out: compressed size in bytes */
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ulint n); /* in: ulint integer to be stored */
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/*************************************************************
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Reads a ulint in a compressed form. */
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UNIV_INLINE
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ulint
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mach_read_compressed(
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/*=================*/
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/* out: read integer */
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byte* b); /* in: pointer to memory from where to read */
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/***********************************************************
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The following function is used to store data in 6 consecutive
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bytes. We store the most significant byte to the lowest address. */
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UNIV_INLINE
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void
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mach_write_to_6(
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/*============*/
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byte* b, /* in: pointer to 6 bytes where to store */
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dulint n); /* in: dulint integer to be stored */
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/************************************************************
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The following function is used to fetch data from 6 consecutive
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bytes. The most significant byte is at the lowest address. */
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UNIV_INLINE
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dulint
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mach_read_from_6(
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/*=============*/
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/* out: dulint integer */
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byte* b); /* in: pointer to 6 bytes */
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/***********************************************************
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The following function is used to store data in 7 consecutive
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bytes. We store the most significant byte to the lowest address. */
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UNIV_INLINE
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void
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mach_write_to_7(
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/*============*/
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byte* b, /* in: pointer to 7 bytes where to store */
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dulint n); /* in: dulint integer to be stored */
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/************************************************************
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The following function is used to fetch data from 7 consecutive
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bytes. The most significant byte is at the lowest address. */
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UNIV_INLINE
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dulint
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mach_read_from_7(
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/*=============*/
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/* out: dulint integer */
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byte* b); /* in: pointer to 7 bytes */
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/***********************************************************
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The following function is used to store data in 8 consecutive
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bytes. We store the most significant byte to the lowest address. */
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UNIV_INLINE
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void
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mach_write_to_8(
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/*============*/
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byte* b, /* in: pointer to 8 bytes where to store */
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dulint n); /* in: dulint integer to be stored */
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/************************************************************
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The following function is used to fetch data from 8 consecutive
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bytes. The most significant byte is at the lowest address. */
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UNIV_INLINE
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dulint
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mach_read_from_8(
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/*=============*/
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/* out: dulint integer */
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byte* b); /* in: pointer to 8 bytes */
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/*************************************************************
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Writes a dulint in a compressed form (5..9 bytes). */
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UNIV_INLINE
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ulint
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mach_dulint_write_compressed(
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/*=========================*/
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/* out: size in bytes */
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byte* b, /* in: pointer to memory where to store */
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dulint n); /* in: dulint integer to be stored */
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/*************************************************************
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Returns the size of a dulint when written in the compressed form. */
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UNIV_INLINE
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ulint
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mach_dulint_get_compressed_size(
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/*============================*/
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/* out: compressed size in bytes */
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dulint n); /* in: dulint integer to be stored */
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/*************************************************************
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Reads a dulint in a compressed form. */
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UNIV_INLINE
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dulint
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mach_dulint_read_compressed(
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/*========================*/
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/* out: read dulint */
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byte* b); /* in: pointer to memory from where to read */
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/*************************************************************
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Writes a dulint in a compressed form (1..11 bytes). */
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UNIV_INLINE
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ulint
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mach_dulint_write_much_compressed(
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/*==============================*/
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/* out: size in bytes */
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byte* b, /* in: pointer to memory where to store */
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dulint n); /* in: dulint integer to be stored */
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/*************************************************************
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Returns the size of a dulint when written in the compressed form. */
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UNIV_INLINE
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ulint
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mach_dulint_get_much_compressed_size(
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/*=================================*/
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/* out: compressed size in bytes */
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dulint n); /* in: dulint integer to be stored */
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/*************************************************************
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Reads a dulint in a compressed form. */
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UNIV_INLINE
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dulint
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mach_dulint_read_much_compressed(
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/*=============================*/
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/* out: read dulint */
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byte* b); /* in: pointer to memory from where to read */
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/*************************************************************
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Reads a ulint in a compressed form if the log record fully contains it. */
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byte*
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mach_parse_compressed(
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/*==================*/
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/* out: pointer to end of the stored field, NULL if
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not complete */
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byte* ptr, /* in: pointer to buffer from where to read */
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byte* end_ptr,/* in: pointer to end of the buffer */
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ulint* val); /* out: read value */
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/*************************************************************
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Reads a dulint in a compressed form if the log record fully contains it. */
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byte*
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mach_dulint_parse_compressed(
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/*=========================*/
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/* out: pointer to end of the stored field, NULL if
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not complete */
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byte* ptr, /* in: pointer to buffer from where to read */
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byte* end_ptr,/* in: pointer to end of the buffer */
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dulint* val); /* out: read value */
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/*************************************************************
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Reads a double. It is stored in a little-endian format. */
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UNIV_INLINE
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double
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mach_double_read(
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/*=============*/
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/* out: double read */
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byte* b); /* in: pointer to memory from where to read */
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/*************************************************************
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Writes a double. It is stored in a little-endian format. */
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UNIV_INLINE
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void
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mach_double_write(
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/*==============*/
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byte* b, /* in: pointer to memory where to write */
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double d); /* in: double */
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/*************************************************************
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Reads a float. It is stored in a little-endian format. */
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UNIV_INLINE
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float
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mach_float_read(
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/*=============*/
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/* out: float read */
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byte* b); /* in: pointer to memory from where to read */
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/*************************************************************
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Writes a float. It is stored in a little-endian format. */
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UNIV_INLINE
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void
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mach_float_write(
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/*==============*/
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byte* b, /* in: pointer to memory where to write */
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float d); /* in: float */
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/*************************************************************
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Reads a ulint stored in the little-endian format. */
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UNIV_INLINE
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ulint
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mach_read_from_n_little_endian(
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/*===========================*/
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/* out: unsigned long int */
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byte* buf, /* in: from where to read */
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ulint buf_size); /* in: from how many bytes to read */
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/*************************************************************
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Writes a ulint in the little-endian format. */
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UNIV_INLINE
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void
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mach_write_to_n_little_endian(
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/*==========================*/
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byte* dest, /* in: where to write */
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ulint dest_size, /* in: into how many bytes to write */
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ulint n); /* in: unsigned long int to write */
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/*************************************************************
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Reads a ulint stored in the little-endian format. */
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UNIV_INLINE
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ulint
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mach_read_from_2_little_endian(
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/*===========================*/
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/* out: unsigned long int */
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byte* buf); /* in: from where to read */
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/*************************************************************
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Writes a ulint in the little-endian format. */
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UNIV_INLINE
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void
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mach_write_to_2_little_endian(
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/*==========================*/
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byte* dest, /* in: where to write */
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ulint n); /* in: unsigned long int to write */
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#ifndef UNIV_NONINL
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#include "mach0data.ic"
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#endif
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#endif
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