user/dev discussion of public-inbox itself
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From: Eric Wong <e@80x24.org>
To: meta@public-inbox.org
Subject: [PATCH 5/4] DS: workaround IO::Kqueue EINTR (mis-)handling
Date: Sun, 5 May 2019 04:56:14 +0000
Message-ID: <20190505045614.GA7031@ailurophile> (raw)
In-Reply-To: <20190505005219.31772-2-e@80x24.org>

IO::Kqueue seems unmaintained, so workaround a long-standing
bug where it falls over on signals:
https://rt.cpan.org/Ticket/Display.html?id=116615
---
 TODO                  |  4 ----
 lib/PublicInbox/DS.pm | 10 +++++++++-
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/TODO b/TODO
index ac255b8..d947b0f 100644
--- a/TODO
+++ b/TODO
@@ -52,10 +52,6 @@ all need to be considered for everything we introduce)
 
   cf.  https://public-inbox.org/git/20160814012706.GA18784@starla/
 
-* portability to FreeBSD (and other Free Software *BSDs)
-  ugh... https://rt.cpan.org/Ticket/Display.html?id=116615
-  (IO::KQueue is broken with Danga::Socket / PublicInbox::DS)
-
 * improve documentation
 
 * linkify thread skeletons better
diff --git a/lib/PublicInbox/DS.pm b/lib/PublicInbox/DS.pm
index 7bd5d42..ea09fc9 100644
--- a/lib/PublicInbox/DS.pm
+++ b/lib/PublicInbox/DS.pm
@@ -428,7 +428,15 @@ sub KQueueEventLoop {
 
     while (1) {
         my $timeout = RunTimers();
-        my @ret = $KQueue->kevent($timeout);
+        my @ret = eval { $KQueue->kevent($timeout) };
+        if (my $err = $@) {
+            # workaround https://rt.cpan.org/Ticket/Display.html?id=116615
+            if ($err =~ /Interrupted system call/) {
+                @ret = ();
+            } else {
+                die $err;
+            }
+        }
 
         foreach my $kev (@ret) {
             my ($fd, $filter, $flags, $fflags) = @$kev;
-- 

  reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-05  0:52 [PATCH 0/4] bundle Danga::Socket and Sys::Syscall Eric Wong
2019-05-05  0:52 ` [PATCH 1/4] " Eric Wong
2019-05-05  4:56   ` Eric Wong [this message]
2019-05-08  9:07   ` [PATCH 6/4] DS: handle EINTR in IO::Poll path, too Eric Wong
2019-05-05  0:52 ` [PATCH 2/4] listener: use EPOLLEXCLUSIVE for listen sockets Eric Wong
2019-05-05  0:52 ` [PATCH 3/4] DS: remove unused fields and functions Eric Wong
2019-05-05  0:52 ` [PATCH 4/4] DS: drop profiling support Eric Wong
2019-05-08 19:18 ` [PATCH 0/4] Danga::Socket bundling cleanups Eric Wong
2019-05-08 19:18   ` [PATCH 1/4] build: do not manify DS and Syscall pods Eric Wong
2019-05-08 19:18   ` [PATCH 2/4] syscall: drop readahead wrapper Eric Wong
2019-05-08 19:18   ` [PATCH 3/4] DS: drop unused "_undef" sub Eric Wong
2019-05-08 19:18   ` [PATCH 4/4] DS: epoll: fix misordered EPOLL_CTL_DEL call Eric Wong

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