commit d475cd8e51cec3aca9e541396f0928377d9771c1
Author: Jaikiran Pai <jaikiran.pai@gmail.com>
Date:   Fri Jun 7 20:40:58 2024 +0530

    7903746: jtreg tests run extremely slow on some environments due to hostname lookups

diff --git a/src/share/classes/com/sun/javatest/regtest/config/RegressionParameters.java b/src/share/classes/com/sun/javatest/regtest/config/RegressionParameters.java
index 5a64bd7..7a5877c 100644
--- a/src/share/classes/com/sun/javatest/regtest/config/RegressionParameters.java
+++ b/src/share/classes/com/sun/javatest/regtest/config/RegressionParameters.java
@@ -27,8 +27,10 @@ package com.sun.javatest.regtest.config;
 
 import java.io.File;
 import java.io.IOException;
+import java.net.InetAddress;
 import java.net.MalformedURLException;
 import java.net.URL;
+import java.net.UnknownHostException;
 import java.nio.file.Files;
 import java.nio.file.InvalidPathException;
 import java.nio.file.Path;
@@ -169,12 +171,14 @@ public final class RegressionParameters
 
     @Override
     public TestEnvironment getEnv() {
+        final TestEnvironment testEnv;
         try {
-            return new RegressionEnvironment(this);
-        }
-        catch (com.sun.javatest.TestEnvironment.Fault e) {
+            testEnv = new RegressionEnvironment(this);
+        } catch (com.sun.javatest.TestEnvironment.Fault e) {
             return null;
         }
+        testEnv.put("hostname", LazyHostNameLookup.HOST_NAME);
+        return testEnv;
     }
 
     @Override
@@ -1487,4 +1491,18 @@ public final class RegressionParameters
     private Pattern retainFilesPattern;
 
     private static final I18NResourceBundle i18n = I18NResourceBundle.getBundleForClass(RegressionParameters.class);
+
+    private static final class LazyHostNameLookup {
+        private static final String HOST_NAME;
+
+        static {
+            String hostname;
+            try {
+                hostname = InetAddress.getLocalHost().getCanonicalHostName();
+            } catch (UnknownHostException e) {
+                hostname = "127.0.0.1";
+            }
+            HOST_NAME = hostname;
+        }
+    }
 }
diff --git a/src/share/classes/com/sun/javatest/regtest/exec/RegressionScript.java b/src/share/classes/com/sun/javatest/regtest/exec/RegressionScript.java
index 095f259..203964f 100644
--- a/src/share/classes/com/sun/javatest/regtest/exec/RegressionScript.java
+++ b/src/share/classes/com/sun/javatest/regtest/exec/RegressionScript.java
@@ -128,14 +128,9 @@ public class RegressionScript extends Script {
         // defaults
 
         testResult = getTestResult();
-
-        String hostname;
-        try {
-            hostname = InetAddress.getLocalHost().getCanonicalHostName();
-        } catch (UnknownHostException e) {
-            hostname = "127.0.0.1";
-        }
-        testResult.putProperty("hostname", hostname);
+        String[] vals = regEnv.getExtraValues().get("hostname");
+        String hostName = (vals == null || vals.length == 0) ? "127.0.0.1" : vals[0];
+        testResult.putProperty("hostname", hostName);
         String[] props = { "user.name" };
         for (String p: props) {
             testResult.putProperty(p, System.getProperty(p));