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Diffstat (limited to 'script/mwrap-perl')
| -rw-r--r-- | script/mwrap-perl | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/script/mwrap-perl b/script/mwrap-perl deleted file mode 100644 index 82629b4..0000000 --- a/script/mwrap-perl +++ /dev/null @@ -1,97 +0,0 @@ -#!/usr/bin/perl -w -# Copyright (C) mwrap hackers <mwrap-perl@80x24.org> -# License: GPL-3.0+ <https://www.gnu.org/licenses/gpl-3.0.txt> -use v5.12; -use Devel::Mwrap; -my ($so) = grep(m!/Mwrap\.so\z!, @DynaLoader::dl_shared_objects); -defined($so) or die 'Mwrap.so not loaded'; -my $cur = $ENV{LD_PRELOAD}; -if (!@ARGV || ($ARGV[0] // '') =~ /\A(?:-h|--help)\z/) { - require Pod::Usage; - Pod::Usage::pod2usage(@ARGV ? 0 : 1); -} -if (defined $cur) { - my @cur = split(/[: \t]+/, $cur); - if (!grep(/\A\Q$so\E\z/, @cur)) { - # drop old redundant versions - my @keep = grep(!m!/Mwrap\.so$!, @cur); - $ENV{LD_PRELOAD} = join(':', $so, @keep); - } -} else { - $ENV{LD_PRELOAD} = $so; -} -exec @ARGV; -__END__ -=head1 NAME - -mwrap-perl - run any command under mwrap - -=head1 SYNOPSIS - - # to trace a long-running program and access it via $DIRECTORY/$PID.sock: - MWRAP=socket_dir:$DIRECTORY mwrap-perl COMMAND - - # to trace a short-lived command and dump its output to a log: - MWRAP=dump_path:$FILENAME mwrap-perl COMMAND - -=head1 DESCRIPTION - -mwrap-perl is a command-line to automatically add Mwrap.so as an -LD_PRELOAD for any command. It will resolve malloc-family calls -to a Perl file and line number, and it can also provide a backtrace -of native (C/C++) functions for non-Perl programs. - -=head1 ENVIRONMENT - -C<MWRAP> is the only environment variable read. It contains multiple -options delimited by C<,> with names and values delimited by C<:> - -=item socket_dir:$DIRECTORY - -This launches an embedded HTTP server in each process and binds it -to C<$DIRECTORY/$PID.sock>. C<curl --unix-socket $DIRECTORY/$PID.sock> -or L<mwrap-rproxy(1p)> may be used to access various endpoints in -the HTTP server. - -=item: bt:$DEPTH - -The backtrace depth for L<backtrace(3)> in addition to the Perl -file and line number where C<$DEPTH> is a non-negative number. - -The maximum allowed value is 32, though values of 5 or less are -typically useful. Increasing this to even 2 or 3 can significantly -increase the amount of memory mwrap (and liburcu) itself uses. - -This is only useful in conjunction with C<socket_dir> - -Default: 0 - -=item dump_path:$FILENAME - -Dumps the output - - total_bytes call_count location - -In the future, dumping to a self-describing CSV will be supported - -=back - -=head1 CONTACT - -Feedback welcome via plain-text mail to L<mailto:mwrap-perl@80x24.org> - -Mail archives are hosted at L<https://80x24.org/mwrap-perl/> - -=head1 COPYRIGHT - -Copyright all contributors L<mailto:mwrap-perl@80x24.org> - -License: GPL-3.0+ L<https://www.gnu.org/licenses/gpl-3.0.txt> - -Source code is at L<https://80x24.org/mwrap-perl.git/> - -=head1 SEE ALSO - -L<mwrap-rproxy(1)>, L<Devel::Mwrap(3pm)> - -=cut |