117 lines
5.6 KiB
Java
117 lines
5.6 KiB
Java
/*
|
|
* Copyright (c) 2014, 2020, 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 SpaceUtilizationCheck
|
|
* @summary Check if the space utilization for shared spaces is adequate
|
|
* @requires vm.cds
|
|
* @library /test/lib
|
|
* @build sun.hotspot.WhiteBox
|
|
* @run driver ClassFileInstaller sun.hotspot.WhiteBox
|
|
* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI SpaceUtilizationCheck
|
|
*/
|
|
|
|
import jdk.test.lib.cds.CDSTestUtils;
|
|
import jdk.test.lib.cds.CDSOptions;
|
|
import jdk.test.lib.process.OutputAnalyzer;
|
|
import sun.hotspot.WhiteBox;
|
|
|
|
import java.util.regex.Pattern;
|
|
import java.util.regex.Matcher;
|
|
import java.util.ArrayList;
|
|
import java.util.Hashtable;
|
|
import java.lang.Integer;
|
|
|
|
public class SpaceUtilizationCheck {
|
|
// For the MC/RW/RO regions:
|
|
// [1] Each region must have strictly less than
|
|
// WhiteBox.metaspaceReserveAlignment() bytes of unused space.
|
|
// [2] There must be no gap between two consecutive regions.
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
// (1) Default VM arguments
|
|
test("-Xlog:cds=debug");
|
|
|
|
// (2) Use the now deprecated VM arguments. They should have no effect.
|
|
test("-Xlog:cds=debug",
|
|
"-XX:SharedReadWriteSize=128M",
|
|
"-XX:SharedReadOnlySize=128M",
|
|
"-XX:SharedMiscDataSize=128M",
|
|
"-XX:SharedMiscCodeSize=128M");
|
|
}
|
|
|
|
static void test(String... extra_options) throws Exception {
|
|
CDSOptions opts = new CDSOptions();
|
|
opts.addSuffix(extra_options);
|
|
OutputAnalyzer output = CDSTestUtils.createArchive(opts);
|
|
CDSTestUtils.checkDump(output);
|
|
Pattern pattern = Pattern.compile("(..) space: *([0-9]+).* out of *([0-9]+) bytes .* at 0x([0-9a0-f]+)");
|
|
WhiteBox wb = WhiteBox.getWhiteBox();
|
|
long reserve_alignment = wb.metaspaceReserveAlignment();
|
|
System.out.println("Metaspace::reserve_alignment() = " + reserve_alignment);
|
|
|
|
// Look for output like this. The pattern will only match the first 3 regions, which is what we need to check
|
|
//
|
|
// [4.682s][debug][cds] mc space: 24912 [ 0.2% of total] out of 28672 bytes [ 86.9% used] at 0x0000000800000000
|
|
// [4.682s][debug][cds] rw space: 4391632 [ 33.7% of total] out of 4395008 bytes [ 99.9% used] at 0x0000000800007000
|
|
// [4.682s][debug][cds] ro space: 7570632 [ 58.0% of total] out of 7573504 bytes [100.0% used] at 0x0000000800438000
|
|
// [4.682s][debug][cds] bm space: 213528 [ 1.6% of total] out of 213528 bytes [100.0% used]
|
|
// [4.682s][debug][cds] ca0 space: 507904 [ 3.9% of total] out of 507904 bytes [100.0% used] at 0x00000000fff00000
|
|
// [4.682s][debug][cds] oa0 space: 327680 [ 2.5% of total] out of 327680 bytes [100.0% used] at 0x00000000ffe00000
|
|
// [4.682s][debug][cds] total : 13036288 [100.0% of total] out of 13049856 bytes [ 99.9% used]
|
|
|
|
long last_region = -1;
|
|
Hashtable<String,String> checked = new Hashtable<>();
|
|
for (String line : output.getStdout().split("\n")) {
|
|
if (line.contains(" space:") && !line.contains("st space:")) {
|
|
Matcher matcher = pattern.matcher(line);
|
|
if (matcher.find()) {
|
|
String name = matcher.group(1);
|
|
System.out.println("Checking " + name + " in : " + line);
|
|
checked.put(name, name);
|
|
long used = Long.parseLong(matcher.group(2));
|
|
long capacity = Long.parseLong(matcher.group(3));
|
|
long address = Long.parseLong(matcher.group(4), 16);
|
|
long unused = capacity - used;
|
|
if (unused < 0) {
|
|
throw new RuntimeException("Unused space (" + unused + ") less than 0");
|
|
}
|
|
if (unused > reserve_alignment) {
|
|
// [1] Check for unused space
|
|
throw new RuntimeException("Unused space (" + unused + ") must be smaller than Metaspace::reserve_alignment() (" +
|
|
reserve_alignment + ")");
|
|
}
|
|
if (last_region >= 0 && address != last_region) {
|
|
// [2] Check for no-gap
|
|
throw new RuntimeException("Region 0x" + address + " should have started at 0x" + Long.toString(last_region, 16));
|
|
}
|
|
last_region = address + capacity;
|
|
}
|
|
}
|
|
}
|
|
if (checked.size() != 3) {
|
|
throw new RuntimeException("Must have 3 consecutive, fully utilized regions"); // MC,RW,RO
|
|
}
|
|
}
|
|
}
|