Set parallel merges to a value different from parallel loads.

[remoteglot-book] / opening-stats.pl

diff --git a/opening-stats.pl b/opening-stats.pl
index 1c17f50af253431e7baeb3e38163a5ed20bbc15a..27cdee0a257de70d5a48e27a061204dfb1e7bfa2 100755 (executable)
--- a/opening-stats.pl
+++ b/opening-stats.pl
@@ -5,10 +5,29 @@ use CGI;
 use JSON::XS;
 use lib '..';
 use Position;
+use IPC::Open2;
 
 my $cgi = CGI->new;
 my $fen = $ARGV[0];
+my ($chld_out, $chld_in);
+my $pid = IPC::Open2::open2($chld_out, $chld_in, "./binlookup", "./open.mtbl", "40");
+
+# Root position.
 my $pos = Position->from_fen($fen);
 my $hex = unpack('H*', $pos->bitpacked_fen);
-system("./binlookup", "./open.mtbl", "40", $hex);
+print $chld_in $hex, "\n";
+my $line = <$chld_out>;
+
+print $line;
+chomp $line;
+
+my ($white, $draw, $black, $opening_num, $white_avg_elo, $black_avg_elo, $num_elo, $timestamp, $pgn_file_number, $pgn_start_position, @moves) = split / /, $line;
 
+# Explore one move out.
+for my $move (@moves) {
+       my ($np, $uci_move) = $pos->make_pretty_move($move);
+       my $hex = unpack('H*', $np->bitpacked_fen);
+       print $chld_in $hex, "\n";
+       my $line = <$chld_out>;
+       print "$move $line";
+}