$GLP_PASS->configure(qw(gnu_getopt no_ignore_case auto_abbrev pass_through));
our %PATH2CFG; # persistent for socket daemon
+our @TO_CLOSE_ATFORK_CHILD;
# TBD: this is a documentation mechanism to show a subcommand
# (may) pass options through to another command:
sub x_it ($$) { # pronounced "exit"
my ($self, $code) = @_;
$self->{1}->autoflush(1); # make sure client sees stdout before exit
- if (my $sig = ($code & 127)) {
- kill($sig, $self->{pid} // $$);
- } else {
- $code >>= 8;
- if (my $sock = $self->{sock}) {
- say $sock "exit=$code";
- } else { # for oneshot
- $quit->($code);
- }
+ my $sig = ($code & 127);
+ $code >>= 8 unless $sig;
+ if (my $sock = $self->{sock}) {
+ say $sock "exit=$code";
+ } else { # for oneshot
+ $quit->($code);
}
}
undef;
}
+sub atfork_prepare_wq {
+ my ($self, $wq) = @_;
+ push @{$wq->{-ipc_atfork_child_close}}, @TO_CLOSE_ATFORK_CHILD,
+ grep { defined } @$self{qw(0 1 2 sock)}
+}
+
+# usage: local %SIG = (%SIG, $lei->atfork_child_wq($wq));
+sub atfork_child_wq {
+ my ($self, $wq) = @_;
+ $self->{sock} //= $wq->{0};
+ $self->{$_} //= $wq->{$_} for (0..2);
+ my $oldpipe = $SIG{PIPE};
+ %PATH2CFG = ();
+ @TO_CLOSE_ATFORK_CHILD = ();
+ (
+ __WARN__ => sub { err($self, @_) },
+ PIPE => sub {
+ $self->x_it(141);
+ $oldpipe->() if ref($oldpipe) eq 'CODE';
+ }
+ );
+}
+
+# usage: ($lei, @io) = $lei->atfork_parent_wq($wq);
+sub atfork_parent_wq {
+ my ($self, $wq) = @_;
+ if ($wq->wq_workers) {
+ my $env = delete $self->{env}; # env is inherited at fork
+ my $ret = bless { %$self }, ref($self);
+ $self->{env} = $env;
+ delete @$ret{qw(-lei_store cfg)};
+ my $in = delete $ret->{0};
+ ($ret, delete($ret->{sock}) // $in, delete @$ret{1, 2});
+ } else {
+ ($self, ($self->{sock} // $self->{0}), @$self{1, 2});
+ }
+}
+
sub _help ($;$) {
my ($self, $errmsg) = @_;
my $cmd = $self->{cmd} // 'COMMAND';
$env->{LV} //= '-c';
$env->{COLUMNS} //= 80; # TODO TIOCGWINSZ
$env->{MORE} //= 'FRX' if $^O eq 'freebsd';
- pipe(my ($r, $w)) or return warn "pipe: $!";
+ pipe(my ($r, $wpager)) or return warn "pipe: $!";
my $rdr = { 0 => $r, 1 => $self->{1}, 2 => $self->{2} };
- $self->{1} = $w;
- $self->{2} = $w if -t $self->{2};
+ $self->{1} = $wpager;
+ $self->{2} = $wpager if -t $self->{2};
my $pid = spawn([$pager], $env, $rdr);
- dwaitpid($pid, undef, $self->{sock});
$env->{GIT_PAGER_IN_USE} = 'true'; # we may spawn git
+ [ $pid, @$rdr{1, 2} ];
}
sub accept_dispatch { # Listener {post_accept} callback
say $sock "request command truncated";
return;
}
- my ($client_pid, $argc, @argv) = split(/\0/, $buf, -1);
+ my ($argc, @argv) = split(/\0/, $buf, -1);
undef $buf;
my %env = map { split(/=/, $_, 2) } splice(@argv, $argc);
if (chdir($env{PWD})) {
local %ENV = %env;
$self->{env} = \%env;
- $self->{pid} = $client_pid + 0;
eval { dispatch($self, @argv) };
say $sock $@ if $@;
} else {
sub noop {}
+our $oldset; sub oldset { $oldset }
+
# lei(1) calls this when it can't connect
sub lazy_start {
my ($path, $errno, $nfd) = @_;
my @st = stat($path) or die "stat($path): $!";
my $dev_ino_expect = pack('dd', $st[0], $st[1]); # dev+ino
pipe(my ($eof_r, $eof_w)) or die "pipe: $!";
- my $oldset = PublicInbox::DS::block_signals();
+ local $oldset = PublicInbox::DS::block_signals();
if ($nfd == 1) {
require PublicInbox::CmdIPC1;
$recv_cmd = PublicInbox::CmdIPC1->can('recv_cmd1');
return if $pid;
$0 = "lei-daemon $path";
local %PATH2CFG;
+ local @TO_CLOSE_ATFORK_CHILD = ($l, $eof_r, $eof_w);
$_->blocking(0) for ($l, $eof_r, $eof_w);
$l = PublicInbox::Listener->new($l, \&accept_dispatch, $l);
my $exit_code;
};
my $sigfd = PublicInbox::Sigfd->new($sig, SFD_NONBLOCK);
local %SIG = (%SIG, %$sig) if !$sigfd;
+ local $SIG{PIPE} = 'IGNORE';
if ($sigfd) { # TODO: use inotify/kqueue to detect unlinked sockets
+ push @TO_CLOSE_ATFORK_CHILD, $sigfd->{sock};
PublicInbox::DS->SetLoopTimeout(5000);
} else {
# wake up every second to accept signals if we don't
local %PATH2CFG;
umask(077) // die("umask(077): $!");
dispatch((bless {
- 0 => *STDIN{IO},
- 1 => *STDOUT{IO},
- 2 => *STDERR{IO},
+ 0 => *STDIN{GLOB},
+ 1 => *STDOUT{GLOB},
+ 2 => *STDERR{GLOB},
env => \%ENV
}, __PACKAGE__), @ARGV);
}