Update of /cvsroot/monetdb/pathfinder/compiler/include
In directory 23jxhf1.ch3.sourceforge.com:/tmp/cvs-serv32624/compiler/include
Modified Files:
Tag: M5XQ
physical.h
Log Message:
propagated changes of Monday Oct 05 2009
from the development trunk to the M5XQ branch
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2009/10/05 - sjoerd: compiler/include/physical.h,1.57
propagated changes of Monday Sep 28 2009 - Monday Oct 05 2009
from the Aug2009_NFI branch to the development trunk
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2009/09/28 - boncz: compiler/include/physical.h,1.56.6.1
optimizations for NFI XIRAF use case -- thanks a great bunch Jan R.!!
- ds_link (already in Stable) optimized for 1-node case
- indices now contain all data (but still not used automatically, nor based
on Lefteris' new indexing schemes)
most prominently though is: subexpression result caching
- caching hints in pragmas
- query enclosed in (# pf:session id:msec ) { query } or (# pf:session-use
id:msec ) { query }
+ queries in the same session use the same working set (documents opened
only once)
+ same working set allows to cache results
+ pf:session-use only uses cache, cannot add to it
- but, multiple pf:session-use can run concurrently; whereas pf:session
is exclusive
- inside a query, an arbitrary number of expressions can be marked up for
caching/reuse
+ (# pf:cache id ) { subexpr }
+ subexpr may not be enclosed by a for-loop
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
U physical.h
Index: physical.h
===================================================================
RCS file: /cvsroot/monetdb/pathfinder/compiler/include/physical.h,v
retrieving revision 1.54.2.2
retrieving revision 1.54.2.3
diff -u -d -r1.54.2.2 -r1.54.2.3
--- physical.h 15 Jun 2009 12:47:31 -0000 1.54.2.2
+++ physical.h 5 Oct 2009 12:15:21 -0000 1.54.2.3
@@ -110,8 +110,10 @@
, pa_content = 130 /**< constructor content operator (elem|doc) */
, pa_slim_content = 131 /**< shallow constructor content operator */
, pa_merge_adjacent = 132
- , pa_error = 139 /**< error operator */
- , pa_nil = 140 /**< end of the list of parameters */
+ , pa_error = 137 /**< error operator */
+ , pa_nil = 138 /**< end of the list of parameters */
+ , pa_cache = 139 /**< cache operator */
+ , pa_cache_border = 140 /**< cache border operator */
, pa_trace = 141 /**< debug operator */
, pa_trace_items = 142 /**< debug operator */
, pa_trace_msg = 143 /**< debug message operator */
@@ -333,6 +335,12 @@
PFalg_col_t col; /**< error: column of error message */
} err;
+ /* semantic content for cache operator */
+ struct {
+ char * id; /**< the cache id */
+ PFalg_col_t item; /**< item column */
+ } cache;
+
/* semantic content for debug relation map operator */
struct {
PFalg_col_t inner; /**< name of the inner column */
@@ -795,6 +803,17 @@
PFpa_op_t *PFpa_nil (void);
/**
+ * Constructor for cache operator
+ */
+PFpa_op_t * PFpa_cache (const PFpa_op_t *n1, const PFpa_op_t *n2,
+ char *id, PFalg_col_t item);
+
+/**
+ * Constructor for cache border operator
+ */
+PFpa_op_t * PFpa_cache_border (const PFpa_op_t *n);
+
+/**
* Constructor for debug operator
*/
PFpa_op_t * PFpa_trace (const PFpa_op_t *n1, const PFpa_op_t *n2);
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