From 6585a9ce5478bca1ac9361f12542c00ba120bf63 Mon Sep 17 00:00:00 2001
From: Stefan Ring <stefan@complang.tuwien.ac.at>
Date: Wed, 30 Apr 2008 20:39:51 +0200
Subject: [PATCH] * tests/weakref.java: New test for weak references.

---
 tests/weakref.java | 71 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 tests/weakref.java

diff --git a/tests/weakref.java b/tests/weakref.java
new file mode 100644
index 000000000..547c8e5b8
--- /dev/null
+++ b/tests/weakref.java
@@ -0,0 +1,71 @@
+import java.lang.ref.*;
+import java.util.HashSet;
+
+class weakref {
+	class OtherThread extends Thread {
+		public volatile boolean quitNow = false;
+		private final ReferenceQueue q;
+		private final HashSet h;
+		public OtherThread(ReferenceQueue q, HashSet h) {
+			this.q = q;
+			this.h = h;
+		}
+		public void run() {
+			while (!quitNow) {
+				try {
+					MyRef r = (MyRef) q.remove();
+					h.remove(r);
+					System.out.println("Integer: " + Integer.toString(r.val));
+				} catch (InterruptedException e) {
+				}
+			}
+		}
+	}
+
+	class MyRef extends WeakReference {
+		public final int val;
+		MyRef(Object o, ReferenceQueue q, int val) {
+			super(o, q);
+			this.val = val;
+		}
+	}
+
+	private void test() {
+		System.out.println("This should print a long list of Integers if weak references are working.");
+		ReferenceQueue q = new ReferenceQueue();
+		HashSet h = new HashSet();
+		OtherThread t = new OtherThread(q, h);
+		t.start();
+		for (int i=0; i<1000000; i++) {
+			Object o = new Integer(i);
+			Reference r = new MyRef(o, q, i);
+			h.add(r);
+		}
+		Runtime.getRuntime().gc();
+		try {
+			Thread.sleep(1000);
+			t.quitNow = true;
+			t.interrupt();
+			t.join();
+		} catch (InterruptedException e) {
+		}
+	}
+
+	public static void main(String[] args) {
+		new weakref().test();
+	}
+}
+
+/*
+ * These are local overrides for various environment variables in Emacs.
+ * Please do not remove this and leave it at the end of the file, where
+ * Emacs will automagically detect them.
+ * ---------------------------------------------------------------------
+ * Local variables:
+ * mode: java
+ * indent-tabs-mode: t
+ * c-basic-offset: 4
+ * tab-width: 4
+ * End:
+ * vim:noexpandtab:sw=4:ts=4:
+ */
-- 
2.25.1