8059550: JEP-JDK-8043304: Test task: segment overflow w/ empty others

Reviewed-by: kvn, thartmann, iignatyev

hotspot/test/compiler/codecache/OverflowCodeCacheTest.java

@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2014, 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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+import java.lang.management.MemoryPoolMXBean;
+import java.util.EnumSet;
+import java.util.ArrayList;
+
+import sun.hotspot.WhiteBox;
+import sun.hotspot.code.BlobType;
+import sun.hotspot.code.CodeBlob;
+import com.oracle.java.testlibrary.Asserts;
+
+/*
+ * @test OverflowCodeCacheTest
+ * @bug 8059550
+ * @library /testlibrary /testlibrary/whitebox
+ * @build OverflowCodeCacheTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ *                              sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::*
+ *                   -XX:-SegmentedCodeCache OverflowCodeCacheTest
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,null::*
+ *                   -XX:+SegmentedCodeCache OverflowCodeCacheTest
+ * @summary testing of code cache segments overflow
+ */
+public class OverflowCodeCacheTest {
+    private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
+
+    public static void main(String[] args) {
+        EnumSet<BlobType> blobTypes = BlobType.getAvailable();
+        for (BlobType type : blobTypes) {
+            new OverflowCodeCacheTest(type).test();
+        }
+    }
+
+    private final BlobType type;
+    private final MemoryPoolMXBean bean;
+    private OverflowCodeCacheTest(BlobType type) {
+        this.type = type;
+        this.bean = type.getMemoryPool();
+    }
+
+    private void test() {
+        System.out.printf("type %s%n", type);
+        System.out.println("allocating till possible...");
+        ArrayList<Long> blobs = new ArrayList<>();
+        try {
+            long addr;
+            int size = (int) (getHeapSize() >> 7);
+            while ((addr = WHITE_BOX.allocateCodeBlob(size, type.id)) != 0) {
+                blobs.add(addr);
+
+                BlobType actualType = CodeBlob.getCodeBlob(addr).code_blob_type;
+                if (actualType != type) {
+                    // check we got allowed overflow handling
+                    Asserts.assertTrue(type.allowTypeWhenOverflow(actualType),
+                            type + " doesn't allow using " + actualType + " when overflow");
+                }
+            }
+            Asserts.assertNotEquals(WHITE_BOX.getCompilationActivityMode(), 1 /* run_compilation*/,
+                    "Compilation must be disabled when CodeCache(CodeHeap) overflows");
+        } finally {
+            for (Long blob : blobs) {
+                WHITE_BOX.freeCodeBlob(blob);
+            }
+        }
+    }
+
+    private long getHeapSize() {
+        return bean.getUsage().getMax();
+    }
+
+}