From bb5441791c8d2da7ce9734b5ae980cdf2e7bbb03 Mon Sep 17 00:00:00 2001
From: Ladyslaw Wlodarski <69821285+ladwlo@users.noreply.github.com>
Date: Tue, 22 Sep 2020 10:16:26 +0200
Subject: [PATCH] Synchronizing on a public object, for true thread-safety
 (issue #21)

---
 .../main/java/org/codehaus/gmaven/plugin/MojoSupport.java | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/gmaven-plugin/src/main/java/org/codehaus/gmaven/plugin/MojoSupport.java b/gmaven-plugin/src/main/java/org/codehaus/gmaven/plugin/MojoSupport.java
index 4276a44e..a9c4f811 100644
--- a/gmaven-plugin/src/main/java/org/codehaus/gmaven/plugin/MojoSupport.java
+++ b/gmaven-plugin/src/main/java/org/codehaus/gmaven/plugin/MojoSupport.java
@@ -63,12 +63,16 @@ public abstract class MojoSupport
      */
     protected MavenProject project;
 
+    private static final Object lock = new Object();
+
     /**
      * Main Mojo execution hook.  Sub-class should use {@link #doExecute} instead.
      */
-    public synchronized void execute() throws MojoExecutionException, MojoFailureException {
+    public void execute() throws MojoExecutionException, MojoFailureException {
         try {
-            doExecute();
+            synchronized(lock) {
+                doExecute();
+            }
         }
         catch (Exception e) {
             //