ART: Refactor test 911

Break out the different test cases. As the stack traces print line
numbers, this will reduce the amount of expected.txt churn when
new tests are added.

Bug: 31684812
Test: m test-art-host-run-test-911-get-stack-trace
Change-Id: I3b4cb80ec5dd851ebbdf25fd660038d20a9daa9e
diff --git a/test/911-get-stack-trace/src/PrintThread.java b/test/911-get-stack-trace/src/PrintThread.java
new file mode 100644
index 0000000..97815cc
--- /dev/null
+++ b/test/911-get-stack-trace/src/PrintThread.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class PrintThread {
+  public static void print(String[][] stack) {
+    System.out.println("---------");
+    for (String[] stackElement : stack) {
+      for (String part : stackElement) {
+        System.out.print(' ');
+        System.out.print(part);
+      }
+      System.out.println();
+    }
+  }
+
+  public static void print(Thread t, int start, int max) {
+    print(getStackTrace(t, start, max));
+  }
+
+  public static void printAll(Object[][] stacks) {
+    List<String> stringified = new ArrayList<String>(stacks.length);
+
+    for (Object[] stackInfo : stacks) {
+      Thread t = (Thread)stackInfo[0];
+      String name = (t != null) ? t.getName() : "null";
+      String stackSerialization;
+      if (name.contains("Daemon")) {
+        // Do not print daemon stacks, as they're non-deterministic.
+        stackSerialization = "<not printed>";
+      } else {
+        StringBuilder sb = new StringBuilder();
+        for (String[] stackElement : (String[][])stackInfo[1]) {
+          for (String part : stackElement) {
+            sb.append(' ');
+            sb.append(part);
+          }
+          sb.append('\n');
+        }
+        stackSerialization = sb.toString();
+      }
+      stringified.add(name + "\n" + stackSerialization);
+    }
+
+    Collections.sort(stringified);
+
+    for (String s : stringified) {
+      System.out.println("---------");
+      System.out.println(s);
+    }
+  }
+
+  public static native String[][] getStackTrace(Thread thread, int start, int max);
+}
\ No newline at end of file