From: djk <djk>
Date: Mon, 13 Jul 1998 22:04:45 +0000 (+0000)
Subject: speeded up search and load of dx spots (a lot)
X-Git-Tag: SPIDER_1_5~45
X-Git-Url: http://dxcluster.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=8cc3ac88ee6ba2216a9f19761385c9869a2f91b1;p=spider.git

speeded up search and load of dx spots (a lot)
---

diff --git a/perl/gdx.pl b/perl/gdx.pl
index 8f6f2065..3d311e38 100755
--- a/perl/gdx.pl
+++ b/perl/gdx.pl
@@ -1,3 +1,4 @@
+#!/usr/bin/perl
 #
 # grep for expressions in various fields of the dx file
 #
@@ -8,7 +9,13 @@ use DXDebug;
 use spot;
 
 # initialise spots file
+STDOUT->autoflush(1);
+
+print "reading in spot data ..";
+$t = time;
 $count = spot->init();
+$t = time - $t;
+print "done ($t secs)\n";
 
 dbgadd('spot');
 
@@ -18,8 +25,6 @@ $time = time;
 
 print "$count database records read in\n";
 
-STDOUT->autoflush(1);
-
 #loada();
 for (;;) {
   print "field: ";
diff --git a/perl/spot.pm b/perl/spot.pm
index 811a7080..1d0ac753 100644
--- a/perl/spot.pm
+++ b/perl/spot.pm
@@ -34,11 +34,14 @@ sub init
     my $ref = spot->open(@first);
 	if ($ref) {
 	  my $fh = $ref->{fh};
+	  my @out = ();
 	  while (<$fh>) {
 	    chomp;
 	    my @ent = split /\^/;
-	    unshift @spot::table, [ @ent ];                # stick this ref to anon list on the FRONT of the table
-		++$count;
+
+        push @spot::table, \@ent;                # stick this ref to anon list on the FRONT of the table
+
+	    ++$count;
 	  }
 	}
     @first = julian->add(@first, 1);
@@ -57,7 +60,7 @@ sub new
   $spot[2] = 0 + $spot[2];
   
   # save it on the front of the list
-  unshift @spot::table, [ @spot ];
+  unshift @spot::table,  \@spot;
   
   # compare dates to see whether need to open a other save file
   my @date = julian->unixtoj($spot[2]);
@@ -91,10 +94,11 @@ sub purge
 #
 sub search
 {
-  my ($pkg, $field, $expr) = @_;
+  my ($pkg, $field, $expr, $from, $to) = @_;
   my $eval;
   my @out;
   my $ref;
+  my $i;
  
   dbg('spot', "input expr = $expr\n");
   if ($field == 0 || $field == 2) {              # numeric fields
@@ -106,7 +110,12 @@ sub search
   
   # build up eval to execute
   $eval = qq(foreach \$ref (\@spot::table) {
-    push \@out, \$ref if $expr;
+    next if \$i < \$from;
+	if ($expr) {
+       unshift(\@out, \$ref);
+	   \$i++;
+	   last if \$to && \$i >= \$to;
+	}
   });
   dbg('spot', "eval = $eval\n");
   eval $eval;                                   # execute it