MonetDB: default - First assess before doing the work

[martin kersten]

Changeset: 570757f0ebb7 for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=570757f0ebb7
Modified Files:
        monetdb5/optimizer/opt_multiplex.c
Branch: default
Log Message:

First assess before doing the work


diffs (27 lines):

diff --git a/monetdb5/optimizer/opt_multiplex.c 
b/monetdb5/optimizer/opt_multiplex.c
--- a/monetdb5/optimizer/opt_multiplex.c
+++ b/monetdb5/optimizer/opt_multiplex.c
@@ -220,6 +220,15 @@ OPTmultiplexImplementation(Client cntxt,
 
        (void) stk;
        (void) pci;
+       for (i = 0; i < mb->stop; i++) {
+               p = getInstrPtr(mb,i);
+               if (isMultiplex(p)) {
+                       break;
+               }
+       }
+       if( i == mb->stop){
+               goto wrapup;
+       }
 
        old = mb->stmt;
        limit = mb->stop;
@@ -263,6 +272,7 @@ OPTmultiplexImplementation(Client cntxt,
        if (!msg)
                msg = chkDeclarations(mb);
     }
+wrapup:
     /* keep all actions taken as a post block comment */
        usec = GDKusec()- usec;
     snprintf(buf,256,"%-20s actions=%2d time=" LLFMT " 
usec","multiplex",actions, usec);
_______________________________________________
checkin-list mailing list
checkin-list@monetdb.org
https://www.monetdb.org/mailman/listinfo/checkin-list