Bug #40399 Please make mtr print stack trace after every failure

SIGABRT is sent to relevant processes after a timeout


client/mysqltest.cc:
  Fixed signal handlers to mysqltest actually dumps core
mysql-test/lib/My/CoreDump.pm:
  Added support for dbx
mysql-test/lib/My/SafeProcess.pm:
  Added dump_core to force process to dump core
mysql-test/lib/My/SafeProcess/safe_process.cc:
  Traps SIGABRT and sends this on to child
mysql-test/mysql-test-run.pl:
  When test times out, force core dumps on mysqltest and servers

1 files changed, 12 insertions, 1 deletions

diff --git a/mysql-test/lib/My/SafeProcess.pm b/mysql-test/lib/My/SafeProcess.pm
index cb68b323d5e..0e3aa968052 100644
--- a/mysql-test/lib/My/SafeProcess.pm
+++ b/mysql-test/lib/My/SafeProcess.pm
@@ -349,13 +349,24 @@ sub start_kill {
   {
     $pid= $self->{SAFE_PID};
     die "Can't kill not started process" unless defined $pid;
-    $ret= kill(15, $pid);
+    $ret= kill("TERM", $pid);
   }
 
   return $ret;
 }
 
 
+sub dump_core {
+  my ($self)= @_;
+  return if IS_WINDOWS;
+  my $pid= $self->{SAFE_PID};
+  die "Can't cet core from not started process" unless defined $pid;
+  _verbose("Sending ABRT to $self");
+  kill ("ABRT", $pid);
+  return 1;
+}
+
+
 #
 # Kill the process as fast as possible
 # and wait for it to return