note
ikegami
The parent is notified of which signal killed a child. If you wanted to monitor that, you could write a wrapper.
<c>
use IPC::Open3 qw( open3 );
my $child_pid = open3(
'<&STDIN',
'>&STDOUT',
*CHILD_ERROR,
@ARGV
);
my $error = '';
1 while read(CHILD_ERROR, $error, 64*1024, length($error));
$error .= "\n"
if length($error) && substr($error, -1) ne "\n";
waitpid($child_pid, 0);
my $code = 0;
if ($? & 0x7F) {
$error .= "Child killed by signal ".( $? & 0x7F )."\n";
$code = 0x80 | $?;
}
elsif ($? >> 8) {
$error .= "Child exited with error ".( $? >> 8 )."\n";
$code = $? >> 8;
}
if (length($error)) {
# Email $error here.
}
exit($code);
</c>
<p>(As you can see, you no longer need custom handlers for warnings and exceptions in the script itself, unless you want to add stack backtraces.)
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