Run-test for suspend in an infinite loop.

Make sure that we can break out of an infinite loop for
gc or other purposes.

Change-Id: I467a5f4383707b2952901d90444ef95e21a0caba

diff --git a/tests/097-suspend-check/expected.txt b/tests/097-suspend-check/expected.txt
new file mode 100644 (file)
index 0000000..07cc825
--- /dev/null
+++ b/tests/097-suspend-check/expected.txt
@@ -0,0 +1,7 @@
+Running (5 seconds) ...
+.
+.
+.
+.
+.
+Done.

diff --git a/tests/097-suspend-check/info.txt b/tests/097-suspend-check/info.txt
new file mode 100644 (file)
index 0000000..d89d66a
--- /dev/null
+++ b/tests/097-suspend-check/info.txt
@@ -0,0 +1,2 @@
+To support garbage collection, debugging and profiling the VM must be able to send all threads
+to a safepoint.  This tests the ability of the VM to do this for a tight loop.

diff --git a/tests/097-suspend-check/src/Main.java b/tests/097-suspend-check/src/Main.java
new file mode 100644 (file)
index 0000000..d92b9e5
--- /dev/null
+++ b/tests/097-suspend-check/src/Main.java
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+public class Main {
+    private static final int TEST_TIME = 5;
+
+    public static void main(String[] args) {
+        System.out.println("Running (" + TEST_TIME + " seconds) ...");
+        InfiniteForLoop forLoop = new InfiniteForLoop();
+        InfiniteWhileLoop whileLoop = new InfiniteWhileLoop();
+        InfiniteDoWhileLoop doWhileLoop = new InfiniteDoWhileLoop();
+        MakeGarbage garbage = new MakeGarbage();
+        forLoop.start();
+        whileLoop.start();
+        doWhileLoop.start();
+        garbage.start();
+        for (int i = 0; i < TEST_TIME; i++) {
+          System.gc();
+          System.out.println(".");
+          sleep(1000);
+        }
+        forLoop.stopNow();
+        whileLoop.stopNow();
+        doWhileLoop.stopNow();
+        garbage.stopNow();
+        System.out.println("Done.");
+    }
+
+    public static void sleep(int ms) {
+        try {
+            Thread.sleep(ms);
+        } catch (InterruptedException ie) {
+            System.err.println("sleep was interrupted");
+        }
+    }
+}
+
+class InfiniteWhileLoop extends Thread {
+  volatile private boolean keepGoing = true;
+  public void run() {
+    int i = 0;
+    while (keepGoing) {
+      i++;
+    }
+  }
+  public void stopNow() {
+    keepGoing = false;
+  }
+}
+
+class InfiniteDoWhileLoop extends Thread {
+  volatile private boolean keepGoing = true;
+  public void run() {
+    int i = 0;
+    do {
+      i++;
+    } while (keepGoing);
+  }
+  public void stopNow() {
+    keepGoing = false;
+  }
+}
+
+class InfiniteForLoop extends Thread {
+  int count = 100000;
+  volatile private boolean keepGoing = true;
+  public void run() {
+    int i = 0;
+    for (int j = 0; keepGoing; j++) {
+      i += j;
+    }
+  }
+  public void stopNow() {
+    keepGoing = false;
+  }
+}
+
+
+class MakeGarbage extends Thread {
+  volatile private boolean keepGoing = true;
+  public void run() {
+    while (keepGoing) {
+      byte[] garbage = new byte[100000];
+    }
+  }
+  public void stopNow() {
+    keepGoing = false;
+  }
+}