ClearMethodStateTest.java revision 6865:d5d005f1d973 
1/*
2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24import java.util.function.Function;
25
26/*
27 * @test ClearMethodStateTest
28 * @bug 8006683 8007288 8022832
29 * @library /testlibrary /testlibrary/whitebox
30 * @ignore 8046268
31 * @build ClearMethodStateTest
32 * @run main ClassFileInstaller sun.hotspot.WhiteBox
33 *                              sun.hotspot.WhiteBox$WhiteBoxPermission
34 * @run main/othervm -Xbootclasspath/a:. -Xmixed -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* ClearMethodStateTest
35 * @summary testing of WB::clearMethodState()
36 * @author igor.ignatyev@oracle.com
37 */
38public class ClearMethodStateTest extends CompilerWhiteBoxTest {
39
40    public static void main(String[] args) throws Exception {
41        CompilerWhiteBoxTest.main(ClearMethodStateTest::new, args);
42    }
43
44    private ClearMethodStateTest(TestCase testCase) {
45        super(testCase);
46        // to prevent inlining of #method
47        WHITE_BOX.testSetDontInlineMethod(method, true);
48    }
49
50
51    /**
52     * Tests {@code WB::clearMethodState()} by calling it before/after
53     * compilation. For non-tiered, checks that counters will be rested after
54     * clearing of method state.
55     *
56     * @throws Exception if one of the checks fails.
57     */
58    @Override
59    protected void test() throws Exception {
60        checkNotCompiled();
61        compile();
62        WHITE_BOX.clearMethodState(method);
63        checkCompiled();
64        WHITE_BOX.clearMethodState(method);
65        deoptimize();
66        checkNotCompiled();
67
68        if (testCase.isOsr()) {
69            // part test isn't applicable for OSR test case
70            return;
71        }
72        if (!TIERED_COMPILATION) {
73            WHITE_BOX.clearMethodState(method);
74            compile(COMPILE_THRESHOLD);
75            checkCompiled();
76
77            deoptimize();
78            checkNotCompiled();
79            WHITE_BOX.clearMethodState(method);
80
81            // invoke method one less time than needed to compile
82            if (COMPILE_THRESHOLD > 1) {
83                compile(COMPILE_THRESHOLD - 1);
84                checkNotCompiled();
85            } else {
86                System.err.println("Warning: 'CompileThreshold' <= 1");
87            }
88
89            compile(1);
90            checkCompiled();
91        } else {
92            System.err.println(
93                    "Warning: part of test is not applicable in Tiered");
94        }
95    }
96}
97