X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=lib%2FPublicInbox%2FIPC.pm;h=edc5ba6486f12a888432d3828fdd4e7f354cff75;hb=4a2a95bbc78f99c8c5278cfe29de74bd1483903c;hp=1c699d76fea1578558ec5361ae5d8e19913deef7;hpb=30cc504b0e88302588ca26e91b8005ec62d5d6f2;p=public-inbox.git diff --git a/lib/PublicInbox/IPC.pm b/lib/PublicInbox/IPC.pm index 1c699d76..edc5ba64 100644 --- a/lib/PublicInbox/IPC.pm +++ b/lib/PublicInbox/IPC.pm @@ -1,4 +1,4 @@ -# Copyright (C) 2020-2021 all contributors +# Copyright (C) all contributors # License: AGPL-3.0+ # base class for remote IPC calls and workqueues, requires Storable or Sereal @@ -12,7 +12,7 @@ use strict; use v5.10.1; use parent qw(Exporter); use Carp qw(croak); -use PublicInbox::DS qw(dwaitpid); +use PublicInbox::DS qw(awaitpid); use PublicInbox::Spawn; use PublicInbox::OnDestroy; use PublicInbox::WQWorker; @@ -43,10 +43,14 @@ if ($enc && $dec) { # should be custom ops } my $recv_cmd = PublicInbox::Spawn->can('recv_cmd4'); -my $send_cmd = PublicInbox::Spawn->can('send_cmd4') // do { +our $send_cmd = PublicInbox::Spawn->can('send_cmd4') // do { require PublicInbox::CmdIPC4; $recv_cmd //= PublicInbox::CmdIPC4->can('recv_cmd4'); PublicInbox::CmdIPC4->can('send_cmd4'); +} // do { + require PublicInbox::Syscall; + $recv_cmd //= PublicInbox::Syscall->can('recv_cmd4'); + PublicInbox::Syscall->can('send_cmd4'); }; sub _get_rec ($) { @@ -103,6 +107,7 @@ sub ipc_worker_spawn { my $pid = fork // die "fork: $!"; if ($pid == 0) { srand($seed); + eval { Net::SSLeay::randomize() }; eval { PublicInbox::DS->Reset }; delete @$self{qw(-wq_s1 -wq_s2 -wq_workers -wq_ppid)}; $w_req = $r_res = undef; @@ -115,7 +120,7 @@ sub ipc_worker_spawn { $fields //= {}; local @$self{keys %$fields} = values(%$fields); my $on_destroy = $self->ipc_atfork_child; - local %SIG = %SIG; + local @SIG{keys %SIG} = values %SIG; PublicInbox::DS::sig_setmask($sigset); ipc_worker_loop($self, $r_req, $w_res); }; @@ -128,21 +133,26 @@ sub ipc_worker_spawn { $self->{-ipc_req} = $w_req; $self->{-ipc_res} = $r_res; $self->{-ipc_ppid} = $$; + awaitpid($pid, \&ipc_worker_reap, $self); $self->{-ipc_pid} = $pid; } -sub ipc_worker_reap { # dwaitpid callback - my ($args, $pid) = @_; +sub ipc_worker_reap { # awaitpid callback + my ($pid, $self) = @_; + delete $self->{-wq_workers}->{$pid}; + if (my $cb_args = $self->{-reap_do}) { + return $cb_args->[0]->($pid, $self, @$cb_args[1..$#$cb_args]); + } return if !$?; - # TERM(15) is our default exit signal, PIPE(13) is likely w/ pager my $s = $? & 127; - warn "PID:$pid died with \$?=$?\n" if $s != 15 && $s != 13; + # TERM(15) is our default exit signal, PIPE(13) is likely w/ pager + warn "$self->{-wq_ident} PID:$pid died \$?=$?\n" if $s != 15 && $s != 13 } -sub wq_wait_old { - my ($self, $cb, @args) = @_; - my $pids = delete $self->{"-wq_old_pids.$$"} or return; - dwaitpid($_, $cb // \&ipc_worker_reap, [$self, @args]) for @$pids; +# register wait workers +sub awaitpid_init { + my ($self, @cb_args) = @_; + $self->{-reap_do} = \@cb_args; } # for base class, override in sub classes @@ -159,7 +169,7 @@ sub ipc_atfork_child { # idempotent, can be called regardless of whether worker is active or not sub ipc_worker_stop { - my ($self, $args) = @_; + my ($self) = @_; 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) { @@ -168,9 +178,7 @@ sub ipc_worker_stop { } die 'no PID with IPC pipes' unless $pid; $w_req = $r_res = undef; - - return if $$ != $ppid; - dwaitpid($pid, \&ipc_worker_reap, [$self, $args]); + awaitpid($pid) if $$ == $ppid; # for non-event loop } # use this if we have multiple readers reading curl or "pigz -dc" @@ -240,7 +248,7 @@ sub recv_and_run { undef $buf; my $sub = shift @$args; eval { $self->$sub(@$args) }; - warn "$$ $0 wq_worker: $@" if $@; + warn "$$ $0 wq_worker: $sub: $@" if $@; delete @$self{0..($nfd-1)}; $n; } @@ -250,7 +258,7 @@ sub wq_worker_loop ($$) { my $wqw = PublicInbox::WQWorker->new($self, $self->{-wq_s2}); PublicInbox::WQWorker->new($self, $bcast2) if $bcast2; PublicInbox::DS->SetPostLoopCallback(sub { $wqw->{sock} }); - PublicInbox::DS->EventLoop; + PublicInbox::DS::event_loop(); PublicInbox::DS->Reset; } @@ -337,6 +345,24 @@ sub wq_do { } } +sub prepare_nonblock { + ($_[0]->{-wq_s1} // die 'BUG: no {-wq_s1}')->blocking(0); + $_[0]->{-reap_do} or die 'BUG: {-reap_do} needed for nonblock'; + require PublicInbox::WQBlocked; +} + +sub wq_nonblock_do { # always async + my ($self, $sub, @args) = @_; + my $buf = ipc_freeze([$sub, @args]); + if ($self->{wqb}) { # saturated once, assume saturated forever + $self->{wqb}->flush_send($buf); + } else { + $send_cmd->($self->{-wq_s1}, [], $buf, MSG_EOR) // + ($!{EAGAIN} ? PublicInbox::WQBlocked->new($self, $buf) + : croak("sendmsg: $!")); + } +} + sub _wq_worker_start ($$$$) { my ($self, $oldset, $fields, $one) = @_; my ($bcast1, $bcast2); @@ -346,12 +372,12 @@ sub _wq_worker_start ($$$$) { my $pid = fork // die "fork: $!"; if ($pid == 0) { srand($seed); + eval { Net::SSLeay::randomize() }; undef $bcast1; eval { PublicInbox::DS->Reset }; delete @$self{qw(-wq_s1 -wq_ppid)}; $self->{-wq_worker_nr} = keys %{delete($self->{-wq_workers}) // {}}; - $SIG{$_} = 'IGNORE' for (qw(PIPE)); $SIG{$_} = 'DEFAULT' for (qw(TTOU TTIN TERM QUIT INT CHLD)); local $0 = $one ? $self->{-wq_ident} : "$self->{-wq_ident} $self->{-wq_worker_nr}"; @@ -361,7 +387,7 @@ sub _wq_worker_start ($$$$) { $fields //= {}; local @$self{keys %$fields} = values(%$fields); my $on_destroy = $self->ipc_atfork_child; - local %SIG = %SIG; + local @SIG{keys %SIG} = values %SIG; PublicInbox::DS::sig_setmask($oldset); wq_worker_loop($self, $bcast2); }; @@ -369,6 +395,7 @@ sub _wq_worker_start ($$$$) { undef $end; # trigger exit } else { $self->{-wq_workers}->{$pid} = $bcast1; + awaitpid($pid, \&ipc_worker_reap, $self); } } @@ -393,42 +420,27 @@ sub wq_workers_start { } sub wq_close { - my ($self, $nohang, $cb, @args) = @_; - delete @$self{qw(-wq_s1 -wq_s2)} or return; - my $ppid = delete $self->{-wq_ppid} or return; - my $workers = delete $self->{-wq_workers} // die 'BUG: no wq_workers'; - return if $ppid != $$; # can't reap siblings or parents - my @pids = map { $_ + 0 } keys %$workers; - if ($nohang) { - push @{$self->{"-wq_old_pids.$$"}}, @pids; - } else { - $cb //= \&ipc_worker_reap; - unshift @args, $self; - dwaitpid($_, $cb, \@args) for @pids; + my ($self) = @_; + if (my $wqb = delete $self->{wqb}) { + $self->{-reap_do} or die 'BUG: {-reap_do} unset'; + $wqb->enq_close; } -} - -sub wq_kill_old { - my ($self, $sig) = @_; - my $pids = $self->{"-wq_old_pids.$$"} or return; - kill($sig // 'TERM', @$pids); + delete @$self{qw(-wq_s1 -wq_s2)} or return; + return if $self->{-reap_do}; + awaitpid($_) for keys %{$self->{-wq_workers}}; } sub wq_kill { my ($self, $sig) = @_; - my $workers = $self->{-wq_workers} or return; - kill($sig // 'TERM', keys %$workers); + kill($sig // 'TERM', keys %{$self->{-wq_workers}}); } sub DESTROY { my ($self) = @_; my $ppid = $self->{-wq_ppid}; wq_kill($self) if $ppid && $ppid == $$; - my $err = $?; wq_close($self); - wq_wait_old($self); ipc_worker_stop($self); - $? = $err if $err; } sub detect_nproc () {