1 /*

     2  * Copyright (c) 2017, 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

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    23 

    24 /*

    25  * @test TestConcurrentPhaseControlG1

    26  * @bug 8169517

    27  * @requires vm.gc.G1

    28  * @summary Test of WhiteBox concurrent GC phase control for G1.

    29  * @key gc

    30  * @modules java.base

    31  * @library /test/lib /

    32  * @build sun.hotspot.WhiteBox

    33  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    34  *    sun.hotspot.WhiteBox$WhiteBoxPermission

    35  * @run driver TestConcurrentPhaseControlG1

    36  */

    37 

    38 import gc.concurrent_phase_control.CheckControl;

    39 

    40 public class TestConcurrentPhaseControlG1 {

    41 

    42     // Pairs of phase name and regex to match log stringm for stepping through,

    43     private static final String[][] g1PhaseInfo = {

    44         // Step through the phases in order.

    45         {"IDLE", null},

    46         {"CONCURRENT_CYCLE", "Concurrent Cycle"},

    47         {"IDLE", null},  // Resume IDLE before testing subphases

    48         {"CLEAR_CLAIMED_MARKS", "Concurrent Clear Claimed Marks"},

    49         {"SCAN_ROOT_REGIONS", "Concurrent Scan Root Regions"},

    50         // ^F so not "From Roots", ^R so not "Restart"

    51         {"CONCURRENT_MARK", "Concurrent Mark [^FR]"},

    52         {"IDLE", null},  // Resume IDLE before testing subphases

    53         {"MARK_FROM_ROOTS", "Concurrent Mark From Roots"},

    54         {"BEFORE_REMARK", null},

    55         {"REMARK", "Pause Remark"},

    56         {"CREATE_LIVE_DATA", "Concurrent Create Live Data"},

    57         // "COMPLETE_CLEANUP",  -- optional phase, not reached by this test

    58         {"CLEANUP_FOR_NEXT_MARK", "Concurrent Cleanup for Next Mark"},

    59         // Clear request

    60         {"IDLE", null},

    61         {"ANY", null},

    62         // Request a phase.

    63         {"MARK_FROM_ROOTS", "Concurrent Mark From Roots"},

    64         // Request an earlier phase, to ensure loop rather than stuck at idle.

    65         {"SCAN_ROOT_REGIONS", "Concurrent Scan Root Regions"},

    66         // Clear request, to unblock service.

    67         {"IDLE", null},

    68         {"ANY", null},

    69     };

    70 

    71     private static final String[] g1Options =

    72         new String[]{"-XX:+UseG1GC",  "-Xlog:gc,gc+marking"};

    73 

    74     private static final String g1Name = "G1";

    75 

    76     public static void main(String[] args) throws Exception {

    77         CheckControl.check(g1Name, g1Options, g1PhaseInfo);

    78     }

    79 }