/*

 * Copyright (c) 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.

 *

 * 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.

 *

 */

/*

 * @test

 * @bug 8136421

 * @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"

 * @library /testlibrary /../../test/lib /

 * @compile ../common/CompilerToVMHelper.java

 * @build sun.hotspot.WhiteBox

 *        compiler.jvmci.compilerToVM.DisassembleCodeBlobTest

 * @run main ClassFileInstaller sun.hotspot.WhiteBox

 *                              sun.hotspot.WhiteBox$WhiteBoxPermission

 *                              jdk.vm.ci.hotspot.CompilerToVMHelper

 * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI

 *      -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:.

 *      compiler.jvmci.compilerToVM.DisassembleCodeBlobTest

 */

package compiler.jvmci.compilerToVM;

import jdk.vm.ci.hotspot.CompilerToVMHelper;

import jdk.test.lib.Asserts;

import sun.hotspot.code.NMethod;

import java.util.List;

public class DisassembleCodeBlobTest {

    public static void main(String[] args) {

        DisassembleCodeBlobTest test

                = new DisassembleCodeBlobTest();

        List<CompileCodeTestCase> testCases

                = CompileCodeTestCase.generate(/* bci = */ -1);

        testCases.addAll(CompileCodeTestCase.generate(/* bci = */ 0));

        testCases.forEach(test::check);

        test.checkNull();

    }

    private void checkNull() {

        String str = CompilerToVMHelper.disassembleCodeBlob(0L);

        Asserts.assertNull(str, "not null string returned for null pointer");

    }

    private void check(CompileCodeTestCase testCase) {

        System.out.println(testCase);

        // to have a clean state

        NMethod nMethod = testCase.deoptimizeAndCompile();

        if (nMethod == null) {

            throw new Error(testCase + " : method is not compiled");

        }

        String str = CompilerToVMHelper.disassembleCodeBlob(nMethod.address);

        if (str != null) {

            Asserts.assertGT(str.length(), 0,

                   testCase +  " : returned string has to be non-zero length");

        }

        String str2 = CompilerToVMHelper.disassembleCodeBlob(nMethod.address);

        Asserts.assertEQ(str, str2,

                testCase + " : 2nd invocation returned different value");

    }

}