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From: Eric Wong <e@80x24.org>
To: meta@public-inbox.org
Subject: [PATCH 16/19] lei q: SIGWINCH process group with the terminal
Date: Sun,  7 Feb 2021 08:51:58 +0000	[thread overview]
Message-ID: <20210207085201.13871-17-e@80x24.org> (raw)
In-Reply-To: <20210207085201.13871-1-e@80x24.org>

While using utime on the destination Maildir is enough for mutt
to eventually notice new mail, "eventually" isn't good enough.

Send a SIGWINCH to wake mutt (and likely other MUAs)
immediately.  This is more portable than relying on MUAs to
support inotify or EVFILT_VNODE.
---
 lib/PublicInbox/LEI.pm        | 11 +++++++++++
 lib/PublicInbox/LeiXSearch.pm |  7 ++++++-
 script/lei                    |  8 +++++---
 3 files changed, 22 insertions(+), 4 deletions(-)

diff --git a/lib/PublicInbox/LEI.pm b/lib/PublicInbox/LEI.pm
index e52154e5..00affe82 100644
--- a/lib/PublicInbox/LEI.pm
+++ b/lib/PublicInbox/LEI.pm
@@ -746,6 +746,17 @@ sub start_mua {
 	}
 }
 
+sub poke_mua { # forces terminal MUAs to wake up and hopefully notice new mail
+	my ($self) = @_;
+	return unless $self->{opt}->{mua} && -t $self->{1};
+	# hit the process group that started the MUA
+	if (my $s = $self->{sock}) {
+		send($s, '-WINCH', MSG_EOR);
+	} elsif ($self->{oneshot}) {
+		kill('-WINCH', $$);
+	}
+}
+
 # caller needs to "-t $self->{1}" to check if tty
 sub start_pager {
 	my ($self) = @_;
diff --git a/lib/PublicInbox/LeiXSearch.pm b/lib/PublicInbox/LeiXSearch.pm
index 0e99e4b4..a7668a17 100644
--- a/lib/PublicInbox/LeiXSearch.pm
+++ b/lib/PublicInbox/LeiXSearch.pm
@@ -321,7 +321,12 @@ Error closing $lei->{ovv}->{dst}: $!
 			}
 			$lei->{1} = $out;
 		}
-		$l2m->lock_free ? $l2m->poke_dst : $lei->start_mua;
+		if ($l2m->lock_free) {
+			$l2m->poke_dst;
+			$lei->poke_mua;
+		} else { # mbox users
+			$lei->start_mua;
+		}
 	}
 	$lei->{-progress} and
 		$lei->err('# ', $lei->{-mset_total} // 0, " matches");
diff --git a/script/lei b/script/lei
index b7f21f14..0b0e2976 100755
--- a/script/lei
+++ b/script/lei
@@ -105,13 +105,15 @@ Falling back to (slow) one-shot mode
 			die "recvmsg: $!";
 		}
 		last if $buf eq '';
-		if ($buf =~ /\Ax_it ([0-9]+)\z/) {
+		if ($buf =~ /\Aexec (.+)\z/) {
+			$exec_cmd->(\@fds, split(/\0/, $1));
+		} elsif ($buf eq '-WINCH') {
+			kill($buf, $$); # for MUA
+		} elsif ($buf =~ /\Ax_it ([0-9]+)\z/) {
 			$x_it_code = $1 + 0;
 			last;
 		} elsif ($buf =~ /\Achild_error ([0-9]+)\z/) {
 			$x_it_code = $1 + 0;
-		} elsif ($buf =~ /\Aexec (.+)\z/) {
-			$exec_cmd->(\@fds, split(/\0/, $1));
 		} else {
 			$sigchld->();
 			die $buf;

  parent reply	other threads:[~2021-02-07  8:52 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-07  8:51 [PATCH 00/19] lei import Maildir, remote mboxrd fixes Eric Wong
2021-02-07  8:51 ` [PATCH 01/19] spawn: pi_fork_exec: restore parent sigmask in child Eric Wong
2021-02-07  8:51 ` [PATCH 02/19] spawn: pi_fork_exec: support "pgid" Eric Wong
2021-02-07 23:10   ` dprintf(3) portability? [was [02/19] spawn: pi_fork_exec: support "pgid"] Eric Wong
2021-02-07  8:51 ` [PATCH 03/19] lei add-external: handle interrupts with --mirror Eric Wong
2021-02-07  8:51 ` [PATCH 04/19] spawn_pp: die more consistently in child Eric Wong
2021-02-07  8:51 ` [PATCH 05/19] ipc: do not die inside wq_worker child process Eric Wong
2021-02-07  8:51 ` [PATCH 06/19] ipc: trim down the Storable checks Eric Wong
2021-02-07  8:51 ` [PATCH 07/19] Makefile.PL: depend on IO::Uncompress::Gunzip Eric Wong
2021-02-07  8:51 ` [PATCH 08/19] xapcmd: avoid potential die surprise in children Eric Wong
2021-02-07  8:51 ` [PATCH 09/19] tests: guard setup_public_inboxes for SQLite and Xapian Eric Wong
2021-02-07  8:51 ` [PATCH 10/19] Revert "ipc: add support for asynchronous callbacks" Eric Wong
2021-02-07  8:51 ` [PATCH 11/19] ipc: wq_do => wq_io_do Eric Wong
2021-02-07  8:51 ` [PATCH 12/19] lei: more consistent IPC exit and error handling Eric Wong
2021-02-07  8:51 ` [PATCH 13/19] lei: remove --mua-cmd alias for --mua Eric Wong
2021-02-07  8:51 ` [PATCH 14/19] lei: replace --thread with --threads Eric Wong
2021-02-07  8:51 ` [PATCH 15/19] lei q: improve remote mboxrd UX Eric Wong
2021-02-07  9:32   ` [PATCH 20/19] lei_xsearch: allow quieting regular mset progress, too Eric Wong
2021-02-07  8:51 ` Eric Wong [this message]
2021-02-07  8:51 ` [PATCH 17/19] lei import: support Maildirs Eric Wong
2021-02-07  8:52 ` [PATCH 18/19] imap: avoid unnecessary on-stack delete Eric Wong
2021-02-07  8:52 ` [PATCH 19/19] httpd/async: " Eric Wong
2021-02-07 10:40 ` [PATCH 21/19] lei q: fix arbitrary --mua command handling Eric Wong

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