X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=t%2Fspawn.t;h=a0019202a85aaf8da3958c86a94423fe8ce82ab8;hb=03c9119ec613fa43dcf0a50b5f35754f13228bc8;hp=c31c4f193a4fd2379df35252cec28aab425dc754;hpb=267371b1273b518215939e817e53733584b68af7;p=public-inbox.git
diff --git a/t/spawn.t b/t/spawn.t
index c31c4f19..a0019202 100644
--- a/t/spawn.t
+++ b/t/spawn.t
@@ -1,9 +1,10 @@
-# Copyright (C) 2015-2019 all contributors
+# Copyright (C) 2015-2020 all contributors
# License: AGPL-3.0+
use strict;
use warnings;
use Test::More;
use PublicInbox::Spawn qw(which spawn popen_rd);
+use PublicInbox::Sigfd;
{
my $true = which('true');
@@ -17,6 +18,32 @@ use PublicInbox::Spawn qw(which spawn popen_rd);
is($?, 0, 'true exited successfully');
}
+{ # ensure waitpid(-1, 0) and SIGCHLD works in spawned process
+ my $script = <<'EOF';
+$| = 1; # unbuffer stdout
+defined(my $pid = fork) or die "fork: $!";
+if ($pid == 0) { exit }
+elsif ($pid > 0) {
+ my $waited = waitpid(-1, 0);
+ $waited == $pid or die "mismatched child $pid != $waited";
+ $? == 0 or die "child err: $>";
+ $SIG{CHLD} = sub { print "HI\n"; exit };
+ print "RDY $$\n";
+ select(undef, undef, undef, 0.01) while 1;
+}
+EOF
+ my $oldset = PublicInbox::Sigfd::block_signals();
+ my $rd = popen_rd([$^X, '-e', $script]);
+ diag 'waiting for child to reap grandchild...';
+ chomp(my $line = readline($rd));
+ my ($rdy, $pid) = split(' ', $line);
+ is($rdy, 'RDY', 'got ready signal, waitpid(-1) works in child');
+ ok(kill('CHLD', $pid), 'sent SIGCHLD to child');
+ is(readline($rd), "HI\n", '$SIG{CHLD} works in child');
+ ok(close $rd, 'popen_rd close works');
+ PublicInbox::Sigfd::sig_setmask($oldset);
+}
+
{
my ($r, $w);
pipe $r, $w or die "pipe failed: $!";