diff options
Diffstat (limited to 'storage/innobase/page/page0zip.c')
| -rw-r--r-- | storage/innobase/page/page0zip.c | 65 |
1 files changed, 52 insertions, 13 deletions
diff --git a/storage/innobase/page/page0zip.c b/storage/innobase/page/page0zip.c index 92ba0ec768a..aa5e39ff04a 100644 --- a/storage/innobase/page/page0zip.c +++ b/storage/innobase/page/page0zip.c @@ -47,8 +47,10 @@ Created June 2005 by Marko Makela # define buf_LRU_stat_inc_unzip() ((void) 0) #endif /* !UNIV_HOTBACKUP */ +#ifndef UNIV_HOTBACKUP /** Statistics on compression, indexed by page_zip_des_t::ssize - 1 */ UNIV_INTERN page_zip_stat_t page_zip_stat[PAGE_ZIP_NUM_SSIZE - 1]; +#endif /* !UNIV_HOTBACKUP */ /* Please refer to ../include/page0zip.ic for a description of the compressed page format. */ @@ -1144,7 +1146,9 @@ page_zip_compress( ulint* offsets = NULL; ulint n_blobs = 0; byte* storage;/* storage of uncompressed columns */ +#ifndef UNIV_HOTBACKUP ullint usec = ut_time_us(NULL); +#endif /* !UNIV_HOTBACKUP */ #ifdef PAGE_ZIP_COMPRESS_DBG FILE* logfile = NULL; #endif @@ -1208,7 +1212,9 @@ page_zip_compress( } } #endif /* PAGE_ZIP_COMPRESS_DBG */ +#ifndef UNIV_HOTBACKUP page_zip_stat[page_zip->ssize - 1].compressed++; +#endif /* !UNIV_HOTBACKUP */ if (UNIV_UNLIKELY(n_dense * PAGE_ZIP_DIR_SLOT_SIZE >= page_zip_get_size(page_zip))) { @@ -1345,8 +1351,10 @@ err_exit: fclose(logfile); } #endif /* PAGE_ZIP_COMPRESS_DBG */ +#ifndef UNIV_HOTBACKUP page_zip_stat[page_zip->ssize - 1].compressed_usec += ut_time_us(NULL) - usec; +#endif /* !UNIV_HOTBACKUP */ return(FALSE); } @@ -1404,12 +1412,14 @@ err_exit: fclose(logfile); } #endif /* PAGE_ZIP_COMPRESS_DBG */ +#ifndef UNIV_HOTBACKUP { page_zip_stat_t* zip_stat = &page_zip_stat[page_zip->ssize - 1]; zip_stat->compressed_ok++; zip_stat->compressed_usec += ut_time_us(NULL) - usec; } +#endif /* !UNIV_HOTBACKUP */ return(TRUE); } @@ -2811,7 +2821,11 @@ page_zip_decompress( /*================*/ page_zip_des_t* page_zip,/*!< in: data, ssize; out: m_start, m_end, m_nonempty, n_blobs */ - page_t* page) /*!< out: uncompressed page, may be trashed */ + page_t* page, /*!< out: uncompressed page, may be trashed */ + ibool all) /*!< in: TRUE=decompress the whole page; + FALSE=verify but do not copy some + page header fields that should not change + after page creation */ { z_stream d_stream; dict_index_t* index = NULL; @@ -2820,7 +2834,9 @@ page_zip_decompress( ulint trx_id_col = ULINT_UNDEFINED; mem_heap_t* heap; ulint* offsets; +#ifndef UNIV_HOTBACKUP ullint usec = ut_time_us(NULL); +#endif /* !UNIV_HOTBACKUP */ ut_ad(page_zip_simple_validate(page_zip)); UNIV_MEM_ASSERT_W(page, UNIV_PAGE_SIZE); @@ -2839,13 +2855,36 @@ page_zip_decompress( heap = mem_heap_create(n_dense * (3 * sizeof *recs) + UNIV_PAGE_SIZE); recs = mem_heap_alloc(heap, n_dense * (2 * sizeof *recs)); + if (all) { + /* Copy the page header. */ + memcpy(page, page_zip->data, PAGE_DATA); + } else { + /* Check that the bytes that we skip are identical. */ +#if defined UNIV_DEBUG || defined UNIV_ZIP_DEBUG + ut_a(!memcmp(FIL_PAGE_TYPE + page, + FIL_PAGE_TYPE + page_zip->data, + PAGE_HEADER - FIL_PAGE_TYPE)); + ut_a(!memcmp(PAGE_HEADER + PAGE_LEVEL + page, + PAGE_HEADER + PAGE_LEVEL + page_zip->data, + PAGE_DATA - (PAGE_HEADER + PAGE_LEVEL))); +#endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */ + + /* Copy the mutable parts of the page header. */ + memcpy(page, page_zip->data, FIL_PAGE_TYPE); + memcpy(PAGE_HEADER + page, PAGE_HEADER + page_zip->data, + PAGE_LEVEL - PAGE_N_DIR_SLOTS); + +#if defined UNIV_DEBUG || defined UNIV_ZIP_DEBUG + /* Check that the page headers match after copying. */ + ut_a(!memcmp(page, page_zip->data, PAGE_DATA)); +#endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */ + } + #ifdef UNIV_ZIP_DEBUG - /* Clear the page. */ - memset(page, 0x55, UNIV_PAGE_SIZE); + /* Clear the uncompressed page, except the header. */ + memset(PAGE_DATA + page, 0x55, UNIV_PAGE_SIZE - PAGE_DATA); #endif /* UNIV_ZIP_DEBUG */ - UNIV_MEM_INVALID(page, UNIV_PAGE_SIZE); - /* Copy the page header. */ - memcpy(page, page_zip->data, PAGE_DATA); + UNIV_MEM_INVALID(PAGE_DATA + page, UNIV_PAGE_SIZE - PAGE_DATA); /* Copy the page directory. */ if (UNIV_UNLIKELY(!page_zip_dir_decode(page_zip, page, recs, @@ -2976,12 +3015,14 @@ err_exit: page_zip_fields_free(index); mem_heap_free(heap); +#ifndef UNIV_HOTBACKUP { page_zip_stat_t* zip_stat = &page_zip_stat[page_zip->ssize - 1]; zip_stat->decompressed++; zip_stat->decompressed_usec += ut_time_us(NULL) - usec; } +#endif /* !UNIV_HOTBACKUP */ /* Update the stat counter for LRU policy. */ buf_LRU_stat_inc_unzip(); @@ -3084,7 +3125,7 @@ page_zip_validate_low( #endif /* UNIV_DEBUG_VALGRIND */ temp_page_zip = *page_zip; - valid = page_zip_decompress(&temp_page_zip, temp_page); + valid = page_zip_decompress(&temp_page_zip, temp_page, TRUE); if (!valid) { fputs("page_zip_validate(): failed to decompress\n", stderr); goto func_exit; @@ -4362,8 +4403,8 @@ IMPORTANT: if page_zip_reorganize() is invoked on a leaf page of a non-clustered index, the caller must update the insert buffer free bits in the same mini-transaction in such a way that the modification will be redo-logged. -@return TRUE on success, FALSE on failure; page and page_zip will be -left intact on failure. */ +@return TRUE on success, FALSE on failure; page_zip will be left +intact on failure, but page will be overwritten. */ UNIV_INTERN ibool page_zip_reorganize( @@ -4428,9 +4469,6 @@ page_zip_reorganize( if (UNIV_UNLIKELY(!page_zip_compress(page_zip, page, index, mtr))) { - /* Restore the old page and exit. */ - buf_frame_copy(page, temp_page); - #ifndef UNIV_HOTBACKUP buf_block_free(temp_block); #endif /* !UNIV_HOTBACKUP */ @@ -4591,7 +4629,8 @@ corrupt: memcpy(page_zip->data + page_zip_get_size(page_zip) - trailer_size, ptr + 8 + size, trailer_size); - if (UNIV_UNLIKELY(!page_zip_decompress(page_zip, page))) { + if (UNIV_UNLIKELY(!page_zip_decompress(page_zip, page, + TRUE))) { goto corrupt; } |