* [PATCH 36/36] on_destroy: support PID owner guard
2020-12-31 13:51 6% [PATCH 00/36] another round of lei stuff Eric Wong
@ 2020-12-31 13:51 7% ` Eric Wong
0 siblings, 0 replies; 2+ results
From: Eric Wong @ 2020-12-31 13:51 UTC (permalink / raw)
To: meta
Since we'll be forking for Xapian indexing and maybe
other places, having a simple guard in place to ensure
OnDestroy doesn't unexpectedly unlink files or similar
is a safer option.
---
lib/PublicInbox/LEI.pm | 5 ++---
lib/PublicInbox/Lock.pm | 4 ++--
lib/PublicInbox/OnDestroy.pm | 5 +++++
script/public-inbox-init | 2 +-
t/on_destroy.t | 9 +++++++++
5 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/lib/PublicInbox/LEI.pm b/lib/PublicInbox/LEI.pm
index b84e24ef..4af85d49 100644
--- a/lib/PublicInbox/LEI.pm
+++ b/lib/PublicInbox/LEI.pm
@@ -745,9 +745,8 @@ sub lazy_start {
# reading the <$daemon> pipe.
openlog($path, 'pid', 'user');
local $SIG{__WARN__} = sub { syslog('warning', "@_") };
- my $owner_pid = $$;
- my $on_destroy = PublicInbox::OnDestroy->new(sub {
- syslog('crit', "$@") if $@ && $$ == $owner_pid;
+ my $on_destroy = PublicInbox::OnDestroy->new($$, sub {
+ syslog('crit', "$@") if $@;
});
open STDERR, '>&STDIN' or die "redirect stderr failed: $!";
open STDOUT, '>&STDIN' or die "redirect stdout failed: $!";
diff --git a/lib/PublicInbox/Lock.pm b/lib/PublicInbox/Lock.pm
index f6eaa5ce..1d0b4f9c 100644
--- a/lib/PublicInbox/Lock.pm
+++ b/lib/PublicInbox/Lock.pm
@@ -36,9 +36,9 @@ sub lock_release {
# caller must use return value
sub lock_for_scope {
- my ($self) = @_;
+ my ($self, @single_pid) = @_;
$self->lock_acquire;
- PublicInbox::OnDestroy->new(\&lock_release, $self);
+ PublicInbox::OnDestroy->new(@single_pid, \&lock_release, $self);
}
sub new_tmp {
diff --git a/lib/PublicInbox/OnDestroy.pm b/lib/PublicInbox/OnDestroy.pm
index 841f87d4..65ebd7dc 100644
--- a/lib/PublicInbox/OnDestroy.pm
+++ b/lib/PublicInbox/OnDestroy.pm
@@ -10,6 +10,11 @@ sub new {
sub DESTROY {
my ($cb, @args) = @{$_[0]};
+ if (!ref($cb)) {
+ my $pid = $cb;
+ return if $pid != $$;
+ $cb = shift @args;
+ }
$cb->(@args) if $cb;
}
diff --git a/script/public-inbox-init b/script/public-inbox-init
index 693f5ca1..222d0c60 100755
--- a/script/public-inbox-init
+++ b/script/public-inbox-init
@@ -92,7 +92,7 @@ sysopen($lockfh, $lockfile, O_RDWR|O_CREAT|O_EXCL) or do {
exit(255);
};
require PublicInbox::OnDestroy;
-my $auto_unlink = PublicInbox::OnDestroy->new(sub { unlink $lockfile });
+my $auto_unlink = PublicInbox::OnDestroy->new($$, sub { unlink $lockfile });
my ($perm, %seen);
if (-e $pi_config) {
open(my $oh, '<', $pi_config) or die "unable to read $pi_config: $!\n";
diff --git a/t/on_destroy.t b/t/on_destroy.t
index 8b85b48e..0de67d0b 100644
--- a/t/on_destroy.t
+++ b/t/on_destroy.t
@@ -16,6 +16,15 @@ $od = PublicInbox::OnDestroy->new(sub { @x = @_ }, qw(x y));
undef $od;
is_deeply(\@x, [ 'x', 'y' ], '2 args passed');
+open my $tmp, '+>>', undef or BAIL_OUT $!;
+$tmp->autoflush(1);
+$od = PublicInbox::OnDestroy->new(1, sub { print $tmp "$$ DESTROY\n" });
+undef $od;
+is(-s $tmp, 0, '$tmp is empty on pid mismatch');
+$od = PublicInbox::OnDestroy->new($$, sub { $tmp = $$ });
+undef $od;
+is($tmp, $$, '$tmp set to $$ by callback');
+
if (my $nr = $ENV{TEST_LEAK_NR}) {
for (0..$nr) {
$od = PublicInbox::OnDestroy->new(sub { @x = @_ }, qw(x y));
^ permalink raw reply related [relevance 7%]
* [PATCH 00/36] another round of lei stuff
@ 2020-12-31 13:51 6% Eric Wong
2020-12-31 13:51 7% ` [PATCH 36/36] on_destroy: support PID owner guard Eric Wong
0 siblings, 1 reply; 2+ results
From: Eric Wong @ 2020-12-31 13:51 UTC (permalink / raw)
To: meta
This is against lei branch @ commit
0c8106d44f317175e122744b43407bf067183175 in
https://public-inbox.org/public-inbox.git
Infrastructure stuff for reading + writing local Maildirs and a
bunch of mbox formats are done (including gz/bz2/xz support)
and it's usage should be familiar to mairix(1) users.
Infrastructure for deduplication + augmenting search results
in place and tested.
Going to skip MH and MMDF for now; but IMAP/JMAP might happen
sooner but deduplication needs low-latency.
"extinbox" renamed "external"
Basic infrastructure like PublicInbox::IPC and SharedKV
should've been done and in use ages ago... I look forward to
using them, at least.
Some DS safety fixes since lei will use it in stranger ways
than current.
Bad enough we have messages with duplicate Message-IDs, lei will
need to deal with Unsent/Drafts messages w/o Message-IDs at all!
Eric Wong (36):
import: respect init.defaultBranch
lei_store: use per-machine refname as git HEAD
revert "lei_store: use per-machine refname as git HEAD"
lei_to_mail: initial implementation for writing mbox formats
sharedkv: fork()-friendly key-value store
sharedkv: split out index_values
lei_to_mail: start atomic and compressed mbox writing
mboxreader: new class for reading various mbox formats
lei_to_mail: start --augment, dedupe, bz2 and xz
lei: implement various deduplication strategies
lei_to_mail: lazy-require LeiDedupe
lei_to_mail: support for non-seekable outputs
lei_to_mail: support Maildir, fix+test --augment
ipc: generic IPC dispatch based on Storable
ipc: support Sereal
lei_store: add ->set_eml, ->add_eml can return smsg
lei: rename "extinbox" => "external"
mid: use defined-or with `push' for uniqueness check
mid: hoist out mids_in sub
lei_store: handle messages without Message-ID at all
ipc: use shutdown(2), base atfork* callback
lei_to_mail: unlink mboxes if not augmenting
lei: add --mfolder as an option
spawn: move run_die here from PublicInbox::Import
init: remove embedded UnlinkMe package
t/run.perl: avoid uninitialized var on incomplete test
gcf2client: reap process on DESTROY
lei_to_mail: open FIFOs O_WRONLY so we block
searchidxshard: call DS->Reset at worker start
t/ipc.t: test for references via `die'
use PublicInbox::DS for dwaitpid
syscall: SFD_NONBLOCK can be a constant, again
lei: avoid Spawn package when starting daemon
avoid calling waitpid from children in DESTROY
ds: clobber $in_loop first at reset
on_destroy: support PID owner guard
MANIFEST | 12 +-
lib/PublicInbox/DS.pm | 42 +-
lib/PublicInbox/DSKQXS.pm | 4 +-
lib/PublicInbox/Daemon.pm | 4 +-
lib/PublicInbox/Gcf2Client.pm | 18 +-
lib/PublicInbox/Git.pm | 7 +-
lib/PublicInbox/IPC.pm | 165 ++++++++
lib/PublicInbox/Import.pm | 36 +-
lib/PublicInbox/LEI.pm | 44 +--
lib/PublicInbox/LeiDedupe.pm | 100 +++++
.../{LeiExtinbox.pm => LeiExternal.pm} | 18 +-
lib/PublicInbox/LeiStore.pm | 32 +-
lib/PublicInbox/LeiToMail.pm | 361 ++++++++++++++++++
lib/PublicInbox/LeiXSearch.pm | 2 +-
lib/PublicInbox/Lock.pm | 17 +-
lib/PublicInbox/MID.pm | 15 +-
lib/PublicInbox/MboxReader.pm | 127 ++++++
lib/PublicInbox/OnDestroy.pm | 5 +
lib/PublicInbox/OverIdx.pm | 2 +
lib/PublicInbox/ProcessPipe.pm | 34 +-
lib/PublicInbox/Qspawn.pm | 43 +--
lib/PublicInbox/SearchIdxShard.pm | 1 +
lib/PublicInbox/SharedKV.pm | 148 +++++++
lib/PublicInbox/Sigfd.pm | 4 +-
lib/PublicInbox/Smsg.pm | 6 +-
lib/PublicInbox/Spawn.pm | 9 +-
lib/PublicInbox/Syscall.pm | 4 +-
lib/PublicInbox/TestCommon.pm | 25 +-
lib/PublicInbox/V2Writable.pm | 10 +-
script/lei | 17 +-
script/public-inbox-init | 32 +-
script/public-inbox-watch | 4 +-
t/convert-compact.t | 4 +-
t/index-git-times.t | 3 +-
t/ipc.t | 80 ++++
t/lei.t | 22 +-
t/lei_dedupe.t | 59 +++
t/lei_store.t | 47 ++-
t/lei_to_mail.t | 246 ++++++++++++
t/lei_xsearch.t | 2 +-
t/mbox_reader.t | 75 ++++
t/on_destroy.t | 9 +
t/plack.t | 4 +-
t/run.perl | 3 +-
t/shared_kv.t | 58 +++
t/sigfd.t | 6 +-
46 files changed, 1755 insertions(+), 211 deletions(-)
create mode 100644 lib/PublicInbox/IPC.pm
create mode 100644 lib/PublicInbox/LeiDedupe.pm
rename lib/PublicInbox/{LeiExtinbox.pm => LeiExternal.pm} (75%)
create mode 100644 lib/PublicInbox/LeiToMail.pm
create mode 100644 lib/PublicInbox/MboxReader.pm
create mode 100644 lib/PublicInbox/SharedKV.pm
create mode 100644 t/ipc.t
create mode 100644 t/lei_dedupe.t
create mode 100644 t/lei_to_mail.t
create mode 100644 t/mbox_reader.t
create mode 100644 t/shared_kv.t
^ permalink raw reply [relevance 6%]
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2020-12-31 13:51 6% [PATCH 00/36] another round of lei stuff Eric Wong
2020-12-31 13:51 7% ` [PATCH 36/36] on_destroy: support PID owner guard Eric Wong
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