From b7294a28afab44c2294bf70baa296bdb81b847c3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Markus=20M=C3=A4kel=C3=A4?= <markus.makela@mariadb.com>
Date: Tue, 18 Jun 2019 07:23:16 +0300
Subject: [PATCH] MXS-2547: Assert that workers aren't stopped

If a worker is stopped, none of the Worker::execute or post_message
methods should be called.
---
 server/core/worker.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/server/core/worker.cc b/server/core/worker.cc
index 728cbca72..6d6990caa 100644
--- a/server/core/worker.cc
+++ b/server/core/worker.cc
@@ -718,6 +718,8 @@ size_t Worker::execute_concurrently(Task& task)
 
 bool Worker::post_message(uint32_t msg_id, intptr_t arg1, intptr_t arg2)
 {
+    ss_dassert(state() != Worker::STOPPED);
+
     // NOTE: No logging here, this function must be signal safe.
     MessageQueue::Message message(msg_id, arg1, arg2);