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authorunknown <heikki@donna.mysql.fi>2001-08-04 19:36:14 +0300
committerunknown <heikki@donna.mysql.fi>2001-08-04 19:36:14 +0300
commitc67510f0939fbcad4f2f0efcc79272322d5ffa57 (patch)
treee6dc89cb458f496f2b93e907afb60d3cd886cc18 /innobase/include/rem0rec.ic
parentee82985a98c2c302e54a81ef586ffc8a867a550c (diff)
downloadmariadb-git-c67510f0939fbcad4f2f0efcc79272322d5ffa57.tar.gz
srv0srv.h Support raw disk partitions as data files
srv0start.c Support raw disk partitions as data files srv0srv.c Support raw disk partitions as data files row0purge.c < 4 GB rows, doublewrite, hang fixes row0row.c < 4 GB rows, doublewrite, hang fixes row0sel.c < 4 GB rows, doublewrite, hang fixes row0uins.c < 4 GB rows, doublewrite, hang fixes row0umod.c < 4 GB rows, doublewrite, hang fixes row0undo.c < 4 GB rows, doublewrite, hang fixes row0upd.c < 4 GB rows, doublewrite, hang fixes srv0srv.c < 4 GB rows, doublewrite, hang fixes srv0start.c < 4 GB rows, doublewrite, hang fixes sync0rw.c < 4 GB rows, doublewrite, hang fixes sync0sync.c < 4 GB rows, doublewrite, hang fixes trx0purge.c < 4 GB rows, doublewrite, hang fixes trx0rec.c < 4 GB rows, doublewrite, hang fixes trx0sys.c < 4 GB rows, doublewrite, hang fixes btr0btr.c < 4 GB rows, doublewrite, hang fixes btr0cur.c < 4 GB rows, doublewrite, hang fixes buf0buf.c < 4 GB rows, doublewrite, hang fixes buf0flu.c < 4 GB rows, doublewrite, hang fixes buf0rea.c < 4 GB rows, doublewrite, hang fixes data0data.c < 4 GB rows, doublewrite, hang fixes fil0fil.c < 4 GB rows, doublewrite, hang fixes fsp0fsp.c < 4 GB rows, doublewrite, hang fixes ibuf0ibuf.c < 4 GB rows, doublewrite, hang fixes lock0lock.c < 4 GB rows, doublewrite, hang fixes log0log.c < 4 GB rows, doublewrite, hang fixes log0recv.c < 4 GB rows, doublewrite, hang fixes os0file.c < 4 GB rows, doublewrite, hang fixes page0cur.c < 4 GB rows, doublewrite, hang fixes pars0pars.c < 4 GB rows, doublewrite, hang fixes rem0cmp.c < 4 GB rows, doublewrite, hang fixes rem0rec.c < 4 GB rows, doublewrite, hang fixes row0ins.c < 4 GB rows, doublewrite, hang fixes row0mysql.c < 4 GB rows, doublewrite, hang fixes univ.i < 4 GB rows, doublewrite, hang fixes data0data.ic < 4 GB rows, doublewrite, hang fixes mach0data.ic < 4 GB rows, doublewrite, hang fixes rem0rec.ic < 4 GB rows, doublewrite, hang fixes row0upd.ic < 4 GB rows, doublewrite, hang fixes trx0rec.ic < 4 GB rows, doublewrite, hang fixes rem0cmp.h < 4 GB rows, doublewrite, hang fixes rem0rec.h < 4 GB rows, doublewrite, hang fixes row0ins.h < 4 GB rows, doublewrite, hang fixes row0mysql.h < 4 GB rows, doublewrite, hang fixes row0row.h < 4 GB rows, doublewrite, hang fixes row0upd.h < 4 GB rows, doublewrite, hang fixes srv0srv.h < 4 GB rows, doublewrite, hang fixes sync0sync.h < 4 GB rows, doublewrite, hang fixes trx0rec.h < 4 GB rows, doublewrite, hang fixes trx0sys.h < 4 GB rows, doublewrite, hang fixes trx0types.h < 4 GB rows, doublewrite, hang fixes trx0undo.h < 4 GB rows, doublewrite, hang fixes ut0dbg.h < 4 GB rows, doublewrite, hang fixes ut0ut.h < 4 GB rows, doublewrite, hang fixes btr0btr.h < 4 GB rows, doublewrite, hang fixes btr0cur.h < 4 GB rows, doublewrite, hang fixes buf0buf.h < 4 GB rows, doublewrite, hang fixes buf0flu.h < 4 GB rows, doublewrite, hang fixes data0data.h < 4 GB rows, doublewrite, hang fixes dict0mem.h < 4 GB rows, doublewrite, hang fixes fil0fil.h < 4 GB rows, doublewrite, hang fixes fsp0fsp.h < 4 GB rows, doublewrite, hang fixes os0file.h < 4 GB rows, doublewrite, hang fixes innobase/include/btr0btr.h: < 4 GB rows, doublewrite, hang fixes innobase/include/btr0cur.h: < 4 GB rows, doublewrite, hang fixes innobase/include/buf0buf.h: < 4 GB rows, doublewrite, hang fixes innobase/include/buf0flu.h: < 4 GB rows, doublewrite, hang fixes innobase/include/data0data.h: < 4 GB rows, doublewrite, hang fixes innobase/include/dict0mem.h: < 4 GB rows, doublewrite, hang fixes innobase/include/fil0fil.h: < 4 GB rows, doublewrite, hang fixes innobase/include/fsp0fsp.h: < 4 GB rows, doublewrite, hang fixes innobase/include/os0file.h: < 4 GB rows, doublewrite, hang fixes innobase/include/rem0cmp.h: < 4 GB rows, doublewrite, hang fixes innobase/include/rem0rec.h: < 4 GB rows, doublewrite, hang fixes innobase/include/row0ins.h: < 4 GB rows, doublewrite, hang fixes innobase/include/row0mysql.h: < 4 GB rows, doublewrite, hang fixes innobase/include/row0row.h: < 4 GB rows, doublewrite, hang fixes innobase/include/row0upd.h: < 4 GB rows, doublewrite, hang fixes innobase/include/sync0sync.h: < 4 GB rows, doublewrite, hang fixes innobase/include/trx0rec.h: < 4 GB rows, doublewrite, hang fixes innobase/include/trx0sys.h: < 4 GB rows, doublewrite, hang fixes innobase/include/trx0types.h: < 4 GB rows, doublewrite, hang fixes innobase/include/trx0undo.h: < 4 GB rows, doublewrite, hang fixes innobase/include/ut0dbg.h: < 4 GB rows, doublewrite, hang fixes innobase/include/ut0ut.h: < 4 GB rows, doublewrite, hang fixes innobase/include/data0data.ic: < 4 GB rows, doublewrite, hang fixes innobase/include/mach0data.ic: < 4 GB rows, doublewrite, hang fixes innobase/include/rem0rec.ic: < 4 GB rows, doublewrite, hang fixes innobase/include/row0upd.ic: < 4 GB rows, doublewrite, hang fixes innobase/include/trx0rec.ic: < 4 GB rows, doublewrite, hang fixes innobase/include/univ.i: < 4 GB rows, doublewrite, hang fixes innobase/btr/btr0btr.c: < 4 GB rows, doublewrite, hang fixes innobase/btr/btr0cur.c: < 4 GB rows, doublewrite, hang fixes innobase/buf/buf0buf.c: < 4 GB rows, doublewrite, hang fixes innobase/buf/buf0flu.c: < 4 GB rows, doublewrite, hang fixes innobase/buf/buf0rea.c: < 4 GB rows, doublewrite, hang fixes innobase/data/data0data.c: < 4 GB rows, doublewrite, hang fixes innobase/fil/fil0fil.c: < 4 GB rows, doublewrite, hang fixes innobase/fsp/fsp0fsp.c: < 4 GB rows, doublewrite, hang fixes innobase/ibuf/ibuf0ibuf.c: < 4 GB rows, doublewrite, hang fixes innobase/lock/lock0lock.c: < 4 GB rows, doublewrite, hang fixes innobase/log/log0log.c: < 4 GB rows, doublewrite, hang fixes innobase/log/log0recv.c: < 4 GB rows, doublewrite, hang fixes innobase/os/os0file.c: < 4 GB rows, doublewrite, hang fixes innobase/page/page0cur.c: < 4 GB rows, doublewrite, hang fixes innobase/pars/pars0pars.c: < 4 GB rows, doublewrite, hang fixes innobase/rem/rem0cmp.c: < 4 GB rows, doublewrite, hang fixes innobase/rem/rem0rec.c: < 4 GB rows, doublewrite, hang fixes innobase/row/row0ins.c: < 4 GB rows, doublewrite, hang fixes innobase/row/row0mysql.c: < 4 GB rows, doublewrite, hang fixes innobase/row/row0purge.c: < 4 GB rows, doublewrite, hang fixes innobase/row/row0row.c: < 4 GB rows, doublewrite, hang fixes innobase/row/row0sel.c: < 4 GB rows, doublewrite, hang fixes innobase/row/row0uins.c: < 4 GB rows, doublewrite, hang fixes innobase/row/row0umod.c: < 4 GB rows, doublewrite, hang fixes innobase/row/row0undo.c: < 4 GB rows, doublewrite, hang fixes innobase/row/row0upd.c: < 4 GB rows, doublewrite, hang fixes innobase/sync/sync0rw.c: < 4 GB rows, doublewrite, hang fixes innobase/sync/sync0sync.c: < 4 GB rows, doublewrite, hang fixes innobase/trx/trx0purge.c: < 4 GB rows, doublewrite, hang fixes innobase/trx/trx0rec.c: < 4 GB rows, doublewrite, hang fixes innobase/trx/trx0sys.c: < 4 GB rows, doublewrite, hang fixes innobase/srv/srv0srv.c: Support raw disk partitions as data files innobase/srv/srv0start.c: Support raw disk partitions as data files innobase/include/srv0srv.h: Support raw disk partitions as data files
Diffstat (limited to 'innobase/include/rem0rec.ic')
-rw-r--r--innobase/include/rem0rec.ic72
1 files changed, 64 insertions, 8 deletions
diff --git a/innobase/include/rem0rec.ic b/innobase/include/rem0rec.ic
index c63b25374dd..1e9ecb47e2e 100644
--- a/innobase/include/rem0rec.ic
+++ b/innobase/include/rem0rec.ic
@@ -25,12 +25,6 @@ significant bytes and bits are written below less significant.
4 bits info bits
*/
-
-/* Maximum lengths for the data in a physical record if the offsets
-are given as one byte (resp. two byte) format. */
-#define REC_1BYTE_OFFS_LIMIT 0x7F
-#define REC_2BYTE_OFFS_LIMIT 0x7FFF
-
/* We list the byte offsets from the origin of the record, the mask,
and the shift needed to obtain each bit-field of the record. */
@@ -66,6 +60,11 @@ one-byte and two-byte offsets */
#define REC_1BYTE_SQL_NULL_MASK 0x80
#define REC_2BYTE_SQL_NULL_MASK 0x8000
+/* In a 2-byte offset the second most significant bit denotes
+a field stored to another page: */
+
+#define REC_2BYTE_EXTERN_MASK 0x4000
+
/***************************************************************
Sets the value of the ith field SQL null bit. */
@@ -489,7 +488,7 @@ ulint
rec_2_get_field_end_info(
/*=====================*/
/* out: offset of the start of the field, SQL null
- flag ORed */
+ flag and extern storage flag ORed */
rec_t* rec, /* in: record */
ulint n) /* in: field index */
{
@@ -499,6 +498,63 @@ rec_2_get_field_end_info(
return(mach_read_from_2(rec - (REC_N_EXTRA_BYTES + 2 * n + 2)));
}
+/***************************************************************
+Gets the value of the ith field extern storage bit. If it is TRUE
+it means that the field is stored on another page. */
+UNIV_INLINE
+ibool
+rec_get_nth_field_extern_bit(
+/*=========================*/
+ /* in: TRUE or FALSE */
+ rec_t* rec, /* in: record */
+ ulint i) /* in: ith field */
+{
+ ulint info;
+
+ if (rec_get_1byte_offs_flag(rec)) {
+
+ return(FALSE);
+ }
+
+ info = rec_2_get_field_end_info(rec, i);
+
+ if (info & REC_2BYTE_EXTERN_MASK) {
+ return(TRUE);
+ }
+
+ return(FALSE);
+}
+
+/**********************************************************
+Returns TRUE if the extern bit is set in any of the fields
+of rec. */
+UNIV_INLINE
+ibool
+rec_contains_externally_stored_field(
+/*=================================*/
+ /* out: TRUE if a field is stored externally */
+ rec_t* rec) /* in: record */
+{
+ ulint n;
+ ulint i;
+
+ if (rec_get_1byte_offs_flag(rec)) {
+
+ return(FALSE);
+ }
+
+ n = rec_get_n_fields(rec);
+
+ for (i = 0; i < n; i++) {
+ if (rec_get_nth_field_extern_bit(rec, i)) {
+
+ return(TRUE);
+ }
+ }
+
+ return(FALSE);
+}
+
/**********************************************************
Returns the offset of n - 1th field end if the record is stored in the 1-byte
offsets form. If the field is SQL null, the flag is ORed in the returned
@@ -616,7 +672,7 @@ rec_2_get_field_start_offs(
}
return(rec_2_get_prev_field_end_info(rec, n)
- & ~REC_2BYTE_SQL_NULL_MASK);
+ & ~(REC_2BYTE_SQL_NULL_MASK | REC_2BYTE_EXTERN_MASK));
}
/**********************************************************
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