[PATCH] Revert "gitweb: Time::HiRes is in core for Perl 5.8"

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On Mon, 23 Jan 2012, Ævar Arnfjörð Bjarmason wrote:
> On Mon, Jan 23, 2012 at 05:50, Hallvard Breien Furuseth <h.b.furuseth@xxxxxxxxxxx> wrote:
> >
> > t9500-gitweb-standalone-no-errors fails: Git 1.7.9.rc2/1.7.8.4, RHEL
> > 6.2, Perl 5.10.1.  Reverting 3962f1d756ab41c1d180e35483d1c8dffe51e0d1
> > fixes it.  The commit expects Time::HiRes to be present, but RedHat
> > has split it out to a separate RPM perl-Time-HiRes.  Better add a
> > comment about that, so it doesn't get re-reverted.
> >
> > Or pacify the test and expect gitweb@RHEL-users to install the RPM:
[...]
 
> This doesn't actually fix the issue, it only sweeps it under the rug
> by making the tests pass, gitweb will still fail to compile on Red
> Hat once installed.

I think you meant "fail to run" here.

> I think the right solution is to partially revert
> 3962f1d756ab41c1d180e35483d1c8dffe51e0d1, but add a comment in the
> code indicating that it's to deal with RedHat's broken fork of Perl.

I have added comment in commit message, but not in code.  I wonder if
it would be enough.

> However even if it's required in an eval it might still fail at
> runtime in the reset_timer() function, which'll need to deal with it
> too.

It shouldn't; everything else related to timer is protected with
'if defined $t0', which is false if Time::HiRes module is not available.

Here is the patch
-- >8 --
From: Jakub Narebski <jnareb@xxxxxxxxx>
Subject: [PATCH] Revert "gitweb: Time::HiRes is in core for Perl 5.8"

This reverts commit 3962f1d756ab41c1d180e35483d1c8dffe51e0d1.

Though Time::HiRes is a core Perl module, it doesn't necessarily mean
that it is included in 'perl' package, and that it is installed if
Perl is installed.

For example RedHat has split it out to a separate RPM perl-Time-HiRes.

Noticed-by: Hallvard Breien Furuseth <h.b.furuseth@xxxxxxxxxxx>
Suggested-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
Signed-off-by: Jakub Narębski <jnareb@xxxxxxxxx>
---
 gitweb/gitweb.perl |   12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index abb5a79..c86224a 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -17,10 +17,12 @@ use Encode;
 use Fcntl ':mode';
 use File::Find qw();
 use File::Basename qw(basename);
-use Time::HiRes qw(gettimeofday tv_interval);
 binmode STDOUT, ':utf8';
 
-our $t0 = [ gettimeofday() ];
+our $t0;
+if (eval { require Time::HiRes; 1; }) {
+	$t0 = [Time::HiRes::gettimeofday()];
+}
 our $number_of_git_cmds = 0;
 
 BEGIN {
@@ -1142,7 +1144,7 @@ sub dispatch {
 }
 
 sub reset_timer {
-	our $t0 = [ gettimeofday() ]
+	our $t0 = [Time::HiRes::gettimeofday()]
 		if defined $t0;
 	our $number_of_git_cmds = 0;
 }
@@ -3974,7 +3976,7 @@ sub git_footer_html {
 		print "<div id=\"generating_info\">\n";
 		print 'This page took '.
 		      '<span id="generating_time" class="time_span">'.
-		      tv_interval($t0, [ gettimeofday() ]).
+		      Time::HiRes::tv_interval($t0, [Time::HiRes::gettimeofday()]).
 		      ' seconds </span>'.
 		      ' and '.
 		      '<span id="generating_cmd">'.
@@ -6253,7 +6255,7 @@ sub git_blame_common {
 		print 'END';
 		if (defined $t0 && gitweb_check_feature('timed')) {
 			print ' '.
-			      tv_interval($t0, [ gettimeofday() ]).
+			      Time::HiRes::tv_interval($t0, [Time::HiRes::gettimeofday()]).
 			      ' '.$number_of_git_cmds;
 		}
 		print "\n";
-- 
1.7.6

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