package PublicInbox::IPC;
use strict;
use v5.10.1;
+use parent qw(Exporter);
use Carp qw(confess croak);
use PublicInbox::DS qw(dwaitpid);
use PublicInbox::Spawn;
use Socket qw(AF_UNIX MSG_EOR SOCK_STREAM);
my $SEQPACKET = eval { Socket::SOCK_SEQPACKET() }; # portable enough?
use constant PIPE_BUF => $^O eq 'linux' ? 4096 : POSIX::_POSIX_PIPE_BUF();
+our @EXPORT_OK = qw(ipc_freeze ipc_thaw);
my $WQ_MAX_WORKERS = 4096;
my ($enc, $dec);
# ->imports at BEGIN turns sereal_*_with_object into custom ops on 5.14+
};
if ($enc && $dec) { # should be custom ops
- *freeze = sub ($) { sereal_encode_with_object $enc, $_[0] };
- *thaw = sub ($) { sereal_decode_with_object $dec, $_[0], my $ret };
+ *ipc_freeze = sub ($) { sereal_encode_with_object $enc, $_[0] };
+ *ipc_thaw = sub ($) { sereal_decode_with_object $dec, $_[0], my $ret };
} else {
eval { # some distros have Storable as a separate package from Perl
require Storable;
- Storable->import(qw(freeze thaw));
+ *ipc_freeze = \&Storable::freeze;
+ *ipc_thaw = \&Storable::thaw;
$enc = 1;
} // warn("Storable (part of Perl) missing: $@\n");
}
chop($len) eq "\n" or croak "no LF byte in $len";
defined(my $n = read($r, my $buf, $len)) or croak "read error: $!";
$n == $len or croak "short read: $n != $len";
- thaw($buf);
+ ipc_thaw($buf);
}
sub _pack_rec ($) {
my ($ref) = @_;
- my $buf = freeze($ref);
+ my $buf = ipc_freeze($ref);
length($buf) . "\n" . $buf;
}
}
sub ipc_worker_reap { # dwaitpid callback
- my ($self, $pid) = @_;
+ my ($args, $pid) = @_;
return if !$?;
# TERM(15) is our default exit signal, PIPE(13) is likely w/ pager
my $s = $? & 127;
}
sub wq_wait_old {
- my ($self) = @_;
+ my ($self, $args) = @_;
my $pids = delete $self->{"-wq_old_pids.$$"} or return;
- dwaitpid($_, \&ipc_worker_reap, $self) for @$pids;
+ dwaitpid($_, \&ipc_worker_reap, [$self, $args]) for @$pids;
}
# for base class, override in sub classes
# idempotent, can be called regardless of whether worker is active or not
sub ipc_worker_stop {
- my ($self) = @_;
+ my ($self, $args) = @_;
my ($pid, $ppid) = delete(@$self{qw(-ipc_pid -ipc_ppid)});
my ($w_req, $r_res) = delete(@$self{qw(-ipc_req -ipc_res)});
if (!$w_req && !$r_res) {
$w_req = $r_res = undef;
return if $$ != $ppid;
- dwaitpid($pid, \&ipc_worker_reap, $self);
+ dwaitpid($pid, \&ipc_worker_reap, [$self, $args]);
}
# use this if we have multiple readers reading curl or "pigz -dc"
$n = length($buf);
}
# Sereal dies on truncated data, Storable returns undef
- my $args = thaw($buf) // die "thaw error on buffer of size: $n";
+ my $args = ipc_thaw($buf) // die "thaw error on buffer of size: $n";
undef $buf;
my $sub = shift @$args;
eval { $self->$sub(@$args) };
my ($self, $sub, $ios, @args) = @_;
if (my $s1 = $self->{-wq_s1}) { # run in worker
my $fds = [ map { fileno($_) } @$ios ];
- my $n = $send_cmd->($s1, $fds, freeze([$sub, @args]), MSG_EOR);
+ my $buf = ipc_freeze([$sub, @args]);
+ my $n = $send_cmd->($s1, $fds, $buf, MSG_EOR);
return if defined($n); # likely
croak "sendmsg: $! (check RLIMIT_NOFILE)" if $!{ETOOMANYREFS};
croak "sendmsg: $!" if !$!{EMSGSIZE};
socketpair(my $r, my $w, AF_UNIX, SOCK_STREAM, 0) or
croak "socketpair: $!";
- my $buf = freeze([$sub, @args]);
$n = $send_cmd->($s1, [ fileno($r) ],
- freeze(['do_sock_stream', length($buf)]),
+ ipc_freeze(['do_sock_stream', length($buf)]),
MSG_EOR) // croak "sendmsg: $!";
undef $r;
$n = $send_cmd->($w, $fds, $buf, 0) // croak "sendmsg: $!";
}
# Sereal doesn't have dclone
-sub deep_clone { thaw(freeze($_[-1])) }
+sub deep_clone { ipc_thaw(ipc_freeze($_[-1])) }
1;