Update of /cvsroot/monetdb/pathfinder/compiler/mil
In directory 23jxhf1.ch3.sourceforge.com:/tmp/cvs-serv2692/compiler/mil
Modified Files:
Tag: Nov2009
mil.c
Log Message:
propagated changes of Monday Sep 28 2009 - Wednesday Oct 07 2009
from the Aug2009_NFI branch to the Nov2009 branch
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2009/09/28 - boncz: compiler/mil/mil.c,1.82.8.1
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 mil.c
Index: mil.c
===================================================================
RCS file: /cvsroot/monetdb/pathfinder/compiler/mil/mil.c,v
retrieving revision 1.82
retrieving revision 1.82.6.1
diff -u -d -r1.82 -r1.82.6.1
--- mil.c 7 May 2009 14:27:42 -0000 1.82
+++ mil.c 7 Oct 2009 13:47:38 -0000 1.82.6.1
@@ -414,6 +414,7 @@
case PF_MIL_VAR_XRPC_HDL: return "xrpc_hdl";
case PF_MIL_VAR_XRPC_SEQNR: return "xrpc_seqnr";
case PF_MIL_VAR_XRPC_TIMEOUT:return "xrpc_timeout";
+ case PF_MIL_VAR_XRPC_COORD: return "xrpc_coord";
case PF_MIL_VAR_XRPC_MODE: return "xrpc_mode";
case PF_MIL_VAR_XRPC_MODULE: return "xrpc_module";
case PF_MIL_VAR_XRPC_METHOD: return "xrpc_method";
@@ -1029,6 +1030,15 @@
}
/**
+ * Monet find function.
+ */
+PFmil_t *
+PFmil_find (const PFmil_t *a, const PFmil_t *b)
+{
+ return wire2 (m_find, a, b);
+}
+
+/**
* enumerate operator, return sequence of integers
* starting from @a a with the length @a l.
*/
@@ -1675,6 +1685,42 @@
}
/**
+ * Free an existing working set
+ */
+PFmil_t *
+PFmil_end_ws (const PFmil_t *ws, const PFmil_t *err)
+{
+ return wire2 (m_end_ws, ws, err);
+}
+
+/**
+ * subexpression cache lookup
+ */
+PFmil_t *
+PFmil_cache_expr (const PFmil_t *ws, const PFmil_t *id)
+{
+ return wire2 (m_cache_expr, ws, id);
+}
+/**
+ * subexpression cache lookup
+ */
+PFmil_t *
+PFmil_cache_get (const PFmil_t *ws, const PFmil_t *id)
+{
+ return wire2 (m_cache_get, ws, id);
+}
+
+/**
+ * subexpression cache store
+ */
+PFmil_t *
+PFmil_cache_put (const PFmil_t *ws, const PFmil_t *id, const PFmil_t *val)
+{
+ return wire3 (m_cache_put, ws, id, val);
+}
+
+
+/**
* Positional multijoin with a working set
*/
PFmil_t *
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