Update of /cvsroot/monetdb/pathfinder/runtime
In directory sfp-cvsdas-1.v30.ch3.sourceforge.com:/tmp/cvs-serv31144/runtime
Modified Files:
Tag: M5XQ
vx_index.mx
Log Message:
propagated changes of Monday Jan 04 2010
from the XQFT branch to the M5XQ branch
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2010/01/04 - sjoerd: runtime/vx_index.mx,1.12.12.2
propagated changes of Monday Jan 04 2010
from the development trunk to the XQFT branch
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2010/01/04 - sjoerd: runtime/vx_index.mx,1.14
Changed the implementation of the offset heap for type string.
Before, the offset heap would contain values of type var_t (typically
equal in size to oid), so if there are lots of entries but not that
many different strings, a lot of space was wasted, since only the
lower few bytes of the values in the offset heap would be used, the
rest being zero.
In this version, the offset heap has a dynamic width. It starts off
as a single byte value, and when the offsets become too large to fit
in a single byte, the heap is upgraded to a short, then an int, and
finally (if the system uses 64 bit oids) to lng.
There are tags to mark this change:
before_variable_string_offset and after_variable_string_offset.
Only MonetDB* and pathfinder needed to be changes, so the tags are
only added there.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Index: vx_index.mx
===================================================================
RCS file: /cvsroot/monetdb/pathfinder/runtime/vx_index.mx,v
retrieving revision 1.12.2.1
retrieving revision 1.12.2.2
diff -u -d -r1.12.2.1 -r1.12.2.2
--- vx_index.mx 9 Dec 2009 14:26:03 -0000 1.12.2.1
+++ vx_index.mx 4 Jan 2010 15:22:05 -0000 1.12.2.2
@@ -90,7 +90,7 @@
var_t *src = (var_t*) Tloc(b, BUNfirst(b));
int *dst = (int*) Tloc(bn, BUNfirst(bn));
for(i=0; i<cnt; i++)
- dst[i] = XQH_H(base + (src[i]<<GDK_VARSHIFT));
+ dst[i] = XQH_H(base + VarHeapVal(src, i, b->T->width));
ALIGNsetH(bn, b);
BATsetcount(bn, cnt);
@@ -593,12 +593,12 @@
* to be only of kind TEXT. This is not true during updates,
* since there might *not* be a text node (deleted).
*/
-pre_hsh[pre] = XQH_H(text_base + (pre_text[pre_prop[pre]]<<GDK_VARSHIFT));
+pre_hsh[pre] = XQH_H(text_base + VarHeapVal(pre_text, pre_prop[pre],
text_width));
cur++;
@= found_update_string
if (pre_kind[pre] == TEXT) {
- pre_hsh[pre] = XQH_H(text_base + (pre_text[pre_prop[pre]]<<GDK_VARSHIFT));
+ pre_hsh[pre] = XQH_H(text_base + VarHeapVal(pre_text, pre_prop[pre],
text_width));
cur++;
} else {
/* deal with non-text nodes */
@@ -609,12 +609,12 @@
* to be only of kind TEXT. This is not true during updates,
* since there might *not* be a text node (deleted).
*/
-pre_state[pre] = dbl_fsm(text_base + (pre_text[pre_prop[pre]] <<
GDK_VARSHIFT));
+pre_state[pre] = dbl_fsm(text_base + VarHeapVal(pre_text, pre_prop[pre],
text_width));
cur++;
@= found_update_dbl
if (pre_kind[pre] == TEXT) {
- pre_state[pre] = dbl_fsm(text_base + (pre_text[pre_prop[pre]] <<
GDK_VARSHIFT));
+ pre_state[pre] = dbl_fsm(text_base + VarHeapVal(pre_text, pre_prop[pre],
text_width));
cur++;
} else {
/* deal with non-text nodes */
@@ -754,10 +754,11 @@
@:declerati...@1_@2()@
/* DOCUMENT: */
oid* pre_prop, /* - pre_prop column */
- var_t* pre_text, /* - fixed-size offsets of the
+ void* pre_text, /* - fixed-size offsets of the
pre_text string column */
char* text_base, /* - base pointer of the
pre_text string heap */
+ unsigned short text_width, /* - width of pre_text column */
unsigned int* pre_size, /* - pre_size column */
unsigned char* pre_level, /* - pre_level column */
unsigned char* pre_kind, /* - pre_kind column */
@@ -914,6 +915,7 @@
pre_prop,
(var_t*) Tloc(prop_text, BUNfirst(prop_text)),
(char*) prop_text->T->vheap->base,
+ prop_text->T->width,
pre_size, pre_level, pre_kind, limit,
context, BATcount(ctx_bat))) {
status = GDK_SUCCEED;
@@ -1006,6 +1008,7 @@
pre_prop,
(var_t*) Tloc(prop_text, BUNfirst(prop_text)),
(char*) prop_text->T->vheap->base,
+ prop_text->T->width,
pre_size, pre_level, pre_kind, limit,
context, BATcount(ctx_bat))) {
status = GDK_SUCCEED;
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