scripts: add ninja-tsHEADmaster

Add timestamps to every line of STDOUT. Great with serial consoles.

Signed-off-by: Wolfram Sang <wsa@kernel.org>

1 files changed, 33 insertions, 0 deletions

diff --git a/scripts/ninja-ts b/scripts/ninja-ts
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+#!/usr/bin/perl
+# ninja-ts - wsa's Add A Time Stamp Filter V1.1
+# written by Wolfram Sang, (C) 2009 Pengutronix, (C) 2022 Sang Engineering
+# free software - no warranty - WTFPL V2, see http://sam.zoy.org/wtfpl/
+
+use warnings;
+use strict;
+use Time::HiRes qw(gettimeofday tv_interval);
+
+my $arg = defined($ARGV[0]) ? $ARGV[0] : '(?=foo)bar'; # false-branch is a regexp that never matches
+if ($arg eq '--help' or $arg eq '-h') {
+	print "ninja-ts [regexp] - a filter which prepends a timestamp to every line of STDOUT; time will be reset if [regexp] matches\n";
+	print "  Example: picocom <picocom_options> | ninja-ts 'Starting kernel ...'\n";
+	exit 0;
+}
+
+my $old;
+my $base;
+$| = 1; # Flush output immediately
+
+sub reset_time {
+	$old = 0;
+	$base = [gettimeofday()];
+}
+
+reset_time;
+while (<STDIN>) {
+	reset_time if (/$arg/o);
+	my $new = tv_interval($base);
+	my $diff = $new - $old;
+	printf("[%10.6f] <%10.6f> $_", $new, $diff);
+	$old = $new;
+}