jdk8-mips64-public/hotspot: test/gc/g1/TestLargePageUseForAuxMemory.java@6cbff0651f1a (annotated)

test/gc/g1/TestLargePageUseForAuxMemory.java@6cbff0651f1a (annotated)

test/gc/g1/TestLargePageUseForAuxMemory.java

Mon, 06 Nov 2017 16:51:47 +0800

author: aoqi
date: Mon, 06 Nov 2017 16:51:47 +0800
changeset 7997: 6cbff0651f1a
parent 7786: 0956bdcc671e
permissions: -rw-r--r--

[Code Reorganization] remove trailing whitespace to pass jcheck test

 /*
  * 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 TestLargePageUseForAuxMemory.java
  * @bug 8058354
  * @key gc
  * @library /testlibrary /testlibrary/whitebox
  * @requires (vm.gc=="G1" | vm.gc=="null")
  * @build TestLargePageUseForAuxMemory
  * @run main ClassFileInstaller sun.hotspot.WhiteBox
  *                              sun.hotspot.WhiteBox$WhiteBoxPermission
  * @summary Test that auxiliary data structures are allocated using large pages if available.
  * @run main/othervm -Xbootclasspath/a:. -XX:+UseG1GC -XX:+WhiteBoxAPI -XX:+IgnoreUnrecognizedVMOptions -XX:+UseLargePages TestLargePageUseForAuxMemory
  */
 import com.oracle.java.testlibrary.*;
 import sun.hotspot.WhiteBox;
 public class TestLargePageUseForAuxMemory {
     static final int HEAP_REGION_SIZE = 4 * 1024 * 1024;
     static long largePageSize;
     static long smallPageSize;
     static void checkSmallTables(OutputAnalyzer output, long expectedPageSize) throws Exception {
         output.shouldContain("G1 'Block offset table': pg_sz=" + expectedPageSize);
         output.shouldContain("G1 'Card counts table': pg_sz=" + expectedPageSize);
     }
     static void checkBitmaps(OutputAnalyzer output, long expectedPageSize) throws Exception {
         output.shouldContain("G1 'Prev Bitmap': pg_sz=" + expectedPageSize);
         output.shouldContain("G1 'Next Bitmap': pg_sz=" + expectedPageSize);
     }
     static void testVM(long heapsize, boolean cardsShouldUseLargePages, boolean bitmapShouldUseLargePages) throws Exception {
         ProcessBuilder pb;
         // Test with large page enabled.
         pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
                                                    "-XX:G1HeapRegionSize=" + HEAP_REGION_SIZE,
                                                    "-Xms" + 10 * HEAP_REGION_SIZE,
                                                    "-Xmx" + heapsize,
                                                    "-XX:+TracePageSizes",
                                                    "-XX:+UseLargePages",
                                                    "-XX:+IgnoreUnrecognizedVMOptions",  // there is on ObjectAlignmentInBytes in 32 bit builds
                                                    "-XX:ObjectAlignmentInBytes=8",
                                                    "-version");
         OutputAnalyzer output = new OutputAnalyzer(pb.start());
         checkSmallTables(output, (cardsShouldUseLargePages ? largePageSize : smallPageSize));
         checkBitmaps(output, (bitmapShouldUseLargePages ? largePageSize : smallPageSize));
         output.shouldHaveExitValue(0);
         // Test with large page disabled.
         pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
                                                    "-XX:G1HeapRegionSize=" + HEAP_REGION_SIZE,
                                                    "-Xms" + 10 * HEAP_REGION_SIZE,
                                                    "-Xmx" + heapsize,
                                                    "-XX:+TracePageSizes",
                                                    "-XX:-UseLargePages",
                                                    "-XX:+IgnoreUnrecognizedVMOptions",  // there is on ObjectAlignmentInBytes in 32 bit builds
                                                    "-XX:ObjectAlignmentInBytes=8",
                                                    "-version");
         output = new OutputAnalyzer(pb.start());
         checkSmallTables(output, smallPageSize);
         checkBitmaps(output, smallPageSize);
         output.shouldHaveExitValue(0);
     }
     public static void main(String[] args) throws Exception {
         if (!Platform.isDebugBuild()) {
             System.out.println("Skip tests on non-debug builds because the required option TracePageSizes is a debug-only option.");
             return;
         }
         WhiteBox wb = WhiteBox.getWhiteBox();
         smallPageSize = wb.getVMPageSize();
         largePageSize = wb.getVMLargePageSize();
         if (largePageSize == 0) {
             System.out.println("Skip tests because large page support does not seem to be available on this platform.");
             return;
         }
         // To get large pages for the card table etc. we need at least a 1G heap (with 4k page size).
         // 32 bit systems will have problems reserving such an amount of contiguous space, so skip the
         // test there.
         if (!Platform.is32bit()) {
             // Size that a single card covers.
             final int cardSize = 512;
             final long heapSizeForCardTableUsingLargePages = largePageSize * cardSize;
             testVM(heapSizeForCardTableUsingLargePages, true, true);
             testVM(heapSizeForCardTableUsingLargePages + HEAP_REGION_SIZE, true, true);
             testVM(heapSizeForCardTableUsingLargePages - HEAP_REGION_SIZE, false, true);
         }
         // Minimum heap requirement to get large pages for bitmaps is 128M heap. This seems okay to test
         // everywhere.
         final int bitmapTranslationFactor = 8 * 8; // ObjectAlignmentInBytes * BitsPerByte
         final long heapSizeForBitmapUsingLargePages = largePageSize * bitmapTranslationFactor;
         testVM(heapSizeForBitmapUsingLargePages, false, true);
         testVM(heapSizeForBitmapUsingLargePages + HEAP_REGION_SIZE, false, true);
         testVM(heapSizeForBitmapUsingLargePages - HEAP_REGION_SIZE, false, false);
     }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/gc/g1/TestLargePageUseForAuxMemory.java@6cbff0651f1a (annotated)

test/gc/g1/TestLargePageUseForAuxMemory.java