mirror/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-01-21 22:34:18 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

branches/zip: page_zip_apply_log(): Write the status bits of the record

Browse source 
before invoking rec_get_offsets().
This commit is contained in:
marko 2007-11-07 13:50:53 +00:00
parent 9a9a952c37
commit 98546caa6f
1 changed files with 20 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

35
page/page0zip.c
View file

@ -1713,6 +1713,26 @@ page_zip_apply_log(
/* Determine the heap number and status bits of the record. */
rec = recs[(val >> 1) - 1];
hs = ((val >> 1) + 1) << REC_HEAP_NO_SHIFT;
hs |= heap_status & ((1 << REC_HEAP_NO_SHIFT) - 1);
/* This may either be an old record that is being
overwritten (updated in place, or allocated from
the free list), or a new record, with the next
available_heap_no. */
if (UNIV_UNLIKELY(hs > heap_status)) {
return(NULL);
} else if (hs == heap_status) {
/* A new record was allocated from the heap. */
if (UNIV_UNLIKELY(val & 1)) {
/* Only existing records may be cleared. */
return(NULL);
}
heap_status += 1 << REC_HEAP_NO_SHIFT;
}
mach_write_to_2(rec - REC_NEW_HEAP_NO, hs);
if (val & 1) {
/* Clear the data bytes of the record. */
mem_heap_t* heap = NULL;
@ -1727,21 +1747,6 @@ page_zip_apply_log(
continue;
}
hs = ((val >> 1) + 1) << REC_HEAP_NO_SHIFT;
hs |= heap_status & ((1 << REC_HEAP_NO_SHIFT) - 1);
/* This may either be an old record that is being
overwritten (updated in place, or allocated from
the free list), or a new record, with the next
available_heap_no. */
if (UNIV_UNLIKELY(hs > heap_status)) {
return(NULL);
} else if (hs == heap_status) {
/* A new record was allocated from the heap. */
heap_status += 1 << REC_HEAP_NO_SHIFT;
}
mach_write_to_2(rec - REC_NEW_HEAP_NO, hs);
#if REC_STATUS_NODE_PTR != TRUE
# error "REC_STATUS_NODE_PTR != TRUE"
#endif