[RFC PATCHv4 01/17] gitweb: Return or exit after done serving request

[Jakub Narebski <jnareb@gmail.com>]

Check if there is a caller in top frame of gitweb, and either 'return'
if gitweb code is wrapped in subroutine, or 'exit' if it is not.

This should avoid

  gitweb.cgi: Subroutine git_SOMETHING redefined at gitweb.cgi line NNN

warnings in error_log when running gitweb with mod_perl (using
ModPerl::Registry handler)

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
---
 gitweb/gitweb.perl |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index 934aacb..c54a8a8 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -987,7 +987,17 @@ if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
 	die_error(400, "Project needed");
 }
 $actions{$action}->();
+
 DONE_GITWEB:
+if (defined caller) {
+	# wrapped in a subroutine processing requests,
+	# e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
+	return;
+} else {
+	# pure CGI script, serving single request
+	# or 'exit' hijacked approprietly
+	exit;
+}
 1;
 
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1.7.0.1