jdk/test/java/lang/ProcessBuilder/Basic.java

rev 11228 : 8054494: Remove sun.misc.Unsafe.monitorEnter, monitorExit and tryMonitorEnter
Reviewed-by: dholmes

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.

@@ -24,11 +24,11 @@
 /*
  * @test
  * @bug 4199068 4738465 4937983 4930681 4926230 4931433 4932663 4986689
  *      5026830 5023243 5070673 4052517 4811767 6192449 6397034 6413313
  *      6464154 6523983 6206031 4960438 6631352 6631966 6850957 6850958
- *      4947220 7018606 7034570 4244896 5049299 8003488
+ *      4947220 7018606 7034570 4244896 5049299 8003488 8054494
  * @summary Basic tests for Process and Environment Variable code
  * @run main/othervm/timeout=300 Basic
  * @run main/othervm/timeout=300 -Djdk.lang.Process.launchMechanism=fork Basic
  * @author Martin Buchholz
  */

@@ -2057,17 +2057,15 @@
 
                     while (useCountField.getInt(deferred) <= 0) {
                         Thread.yield();
                     }
                 } else if (s instanceof BufferedInputStream) {
-                    Field f = Unsafe.class.getDeclaredField("theUnsafe");
-                    f.setAccessible(true);
-                    Unsafe unsafe = (Unsafe)f.get(null);
-
-                    while (unsafe.tryMonitorEnter(s)) {
-                        unsafe.monitorExit(s);
-                        Thread.sleep(1);
+                    // Wait until after the s.read occurs in "thread" by
+                    // checking when the input stream monitor is acquired
+                    // (BufferedInputStream.read is synchronized)
+                    while (!isLocked(s, 10)) {
+                        Thread.sleep(100);
                     }
                 }
                 p.destroy();
                 thread.join();
             }

@@ -2563,6 +2561,23 @@
         for (Fun f : fs)
             try { f.f(); fail("Expected " + k.getName() + " not thrown"); }
             catch (Throwable t) {
                 if (k.isAssignableFrom(t.getClass())) pass();
                 else unexpected(t);}}
+
+    static boolean isLocked(final Object monitor, final long millis) throws InterruptedException {
+        return new Thread() {
+            volatile boolean unlocked;
+
+            @Override
+            public void run() {
+                synchronized (monitor) { unlocked = true; }
+            }
+
+            boolean isLocked() throws InterruptedException {
+                start();
+                join(millis);
+                return !unlocked;
+            }
+        }.isLocked();
+    }
 }