Add script to automate memory usage measurement
diff --git a/scripts/massif_max.pl b/scripts/massif_max.pl
new file mode 100755
index 0000000..df30f0f
--- /dev/null
+++ b/scripts/massif_max.pl
@@ -0,0 +1,31 @@
+#!/usr/bin/perl
+
+# Parse a massif.out.xxx file and output peak total memory usage
+
+use warnings;
+use strict;
+
+use utf8;
+use open qw(:std utf8);
+
+die unless @ARGV == 1;
+
+my @snaps;
+open my $fh, '<', $ARGV[0] or die;
+{ local $/ = 'snapshot='; @snaps = <$fh>; }
+close $fh or die;
+
+my $max = 0;
+for (@snaps)
+{
+ my ($heap, $heap_extra, $stack) = m{
+ mem_heap_B=(\d+)\n
+ mem_heap_extra_B=(\d+)\n
+ mem_stacks_B=(\d+)
+ }xm;
+ next unless defined $heap;
+ my $total = $heap + $heap_extra + $stack;
+ $max = $total if $total > $max;
+}
+
+printf "$max\n";