--- a/hotspot/test/gc/g1/plab/TestPLABPromotion.java Thu Mar 24 10:40:23 2016 +0100
+++ b/hotspot/test/gc/g1/plab/TestPLABPromotion.java Thu Mar 24 13:09:16 2016 +0000
@@ -41,17 +41,16 @@
package gc.g1.plab;
import java.util.List;
-import java.util.Map;
import java.util.Arrays;
import java.io.PrintStream;
import gc.g1.plab.lib.AppPLABPromotion;
import gc.g1.plab.lib.LogParser;
import gc.g1.plab.lib.PLABUtils;
+import gc.g1.plab.lib.PlabInfo;
import jdk.test.lib.OutputAnalyzer;
import jdk.test.lib.ProcessTools;
-import jdk.test.lib.Platform;
/**
* Test checks PLAB promotion of different size objects.
@@ -63,6 +62,12 @@
// GC ID with old PLAB statistics
private final static long GC_ID_OLD_STATS = 2l;
+ private final static String PLAB_USED_FIELD_NAME = "used";
+ private final static String PLAB_DIRECT_ALLOCATED_FIELD_NAME = "direct allocated";
+ private final static List<String> FIELDS_TO_EXTRACT = Arrays.asList(PLAB_USED_FIELD_NAME, PLAB_DIRECT_ALLOCATED_FIELD_NAME);
+
+ private static String output;
+
// Allowable difference for memory consumption (percentage)
private final static long MEM_DIFFERENCE_PCT = 5;
@@ -120,11 +125,12 @@
System.out.println(out.getOutput());
throw new RuntimeException("Expect exit code 0.");
}
- checkResults(out.getOutput(), testCase);
+ output = out.getOutput();
+ checkResults(testCase);
}
}
- private static void checkResults(String output, TestCase testCase) {
+ private static void checkResults(TestCase testCase) {
long plabAllocatedSurvivor;
long directAllocatedSurvivor;
long plabAllocatedOld;
@@ -132,65 +138,89 @@
long memAllocated = testCase.getMemToFill();
LogParser logParser = new LogParser(output);
- Map<String, Long> survivorStats = getPlabStats(logParser, LogParser.ReportType.SURVIVOR_STATS, GC_ID_SURVIVOR_STATS);
- Map<String, Long> oldStats = getPlabStats(logParser, LogParser.ReportType.OLD_STATS, GC_ID_OLD_STATS);
+ PlabInfo survivorPlabInfo = logParser.getSpecifiedStats(GC_ID_SURVIVOR_STATS, LogParser.ReportType.SURVIVOR_STATS, FIELDS_TO_EXTRACT);
+ PlabInfo oldPlabInfo = logParser.getSpecifiedStats(GC_ID_OLD_STATS, LogParser.ReportType.OLD_STATS, FIELDS_TO_EXTRACT);
- plabAllocatedSurvivor = survivorStats.get("used");
- directAllocatedSurvivor = survivorStats.get("direct allocated");
- plabAllocatedOld = oldStats.get("used");
- directAllocatedOld = oldStats.get("direct allocated");
+ checkFields(survivorPlabInfo);
+ checkFields(oldPlabInfo);
+
+ plabAllocatedSurvivor = survivorPlabInfo.get(PLAB_USED_FIELD_NAME);
+ directAllocatedSurvivor = survivorPlabInfo.get(PLAB_DIRECT_ALLOCATED_FIELD_NAME);
+ plabAllocatedOld = oldPlabInfo.get(PLAB_USED_FIELD_NAME);
+ directAllocatedOld = oldPlabInfo.get(PLAB_DIRECT_ALLOCATED_FIELD_NAME);
System.out.printf("Survivor PLAB allocated:%17d Direct allocated: %17d Mem consumed:%17d%n", plabAllocatedSurvivor, directAllocatedSurvivor, memAllocated);
System.out.printf("Old PLAB allocated:%17d Direct allocated: %17d Mem consumed:%17d%n", plabAllocatedOld, directAllocatedOld, memAllocated);
// Unreachable objects case
if (testCase.isDeadObjectCase()) {
- // No dead objects should be promoted
- if (!(checkRatio(plabAllocatedSurvivor, memAllocated) && checkRatio(directAllocatedSurvivor, memAllocated))) {
- System.out.println(output);
- throw new RuntimeException("Unreachable objects should not be allocated using PLAB or direct allocated to Survivor");
- }
- if (!(checkRatio(plabAllocatedOld, memAllocated) && checkRatio(directAllocatedOld, memAllocated))) {
- System.out.println(output);
- throw new RuntimeException("Unreachable objects should not be allocated using PLAB or direct allocated to Old");
- }
+ checkDeadObjectsPromotion(plabAllocatedSurvivor, directAllocatedSurvivor, memAllocated);
+ checkDeadObjectsPromotion(plabAllocatedOld, directAllocatedOld, memAllocated);
+
} else {
// Live objects case
if (testCase.isPromotedByPLAB()) {
- // All live small objects should be promoted using PLAB
- if (!checkDifferenceRatio(plabAllocatedSurvivor, memAllocated)) {
- System.out.println(output);
- throw new RuntimeException("Expect that Survivor PLAB allocation are similar to all mem consumed");
- }
- if (!checkDifferenceRatio(plabAllocatedOld, memAllocated)) {
- System.out.println(output);
- throw new RuntimeException("Expect that Old PLAB allocation are similar to all mem consumed");
- }
+ checkLiveObjectsPromotion(plabAllocatedSurvivor, memAllocated, "Expect that Survivor PLAB allocation are similar to all mem consumed");
+ checkLiveObjectsPromotion(plabAllocatedOld, memAllocated, "Expect that Old PLAB allocation are similar to all mem consumed");
} else {
// All big objects should be directly allocated
- if (!checkDifferenceRatio(directAllocatedSurvivor, memAllocated)) {
- System.out.println(output);
- throw new RuntimeException("Test fails. Expect that Survivor direct allocation are similar to all mem consumed");
- }
- if (!checkDifferenceRatio(directAllocatedOld, memAllocated)) {
- System.out.println(output);
- throw new RuntimeException("Test fails. Expect that Old direct allocation are similar to all mem consumed");
- }
+ checkLiveObjectsPromotion(directAllocatedSurvivor, memAllocated, "Expect that Survivor direct allocation are similar to all mem consumed");
+ checkLiveObjectsPromotion(directAllocatedOld, memAllocated, "Expect that Old direct allocation are similar to all mem consumed");
}
- // All promoted objects size should be similar to all consumed memory
- if (!checkDifferenceRatio(plabAllocatedSurvivor + directAllocatedSurvivor, memAllocated)) {
- System.out.println(output);
- throw new RuntimeException("Test fails. Expect that Survivor gen total allocation are similar to all mem consumed");
- }
- if (!checkDifferenceRatio(plabAllocatedOld + directAllocatedOld, memAllocated)) {
- System.out.println(output);
- throw new RuntimeException("Test fails. Expect that Old gen total allocation are similar to all mem consumed");
- }
+ checkTotalPromotion(plabAllocatedSurvivor, directAllocatedSurvivor, memAllocated, "Expect that Survivor gen total allocation are similar to all mem consumed");
+ checkTotalPromotion(plabAllocatedOld, directAllocatedOld, memAllocated, "Expect that Old gen total allocation are similar to all mem consumed");
}
System.out.println("Test passed!");
}
+ private static void checkTotalPromotion(long plabAllocatedSurvivor, long directAllocatedSurvivor, long memAllocated, String exceptionMessage) {
+ // All promoted objects size should be similar to all consumed memory
+ if (!checkDifferenceRatio(plabAllocatedSurvivor + directAllocatedSurvivor, memAllocated)) {
+ System.out.println(output);
+ throw new RuntimeException(exceptionMessage);
+ }
+ }
+
+ /**
+ * Checks that live objects were promoted as expected.
+ * @param plabAllocated
+ * @param totalMemAllocated
+ * @param exceptionMessage
+ */
+ private static void checkLiveObjectsPromotion(long plabAllocated, long totalMemAllocated, String exceptionMessage) {
+ // All live small objects should be promoted using PLAB
+ if (!checkDifferenceRatio(plabAllocated, totalMemAllocated)) {
+ System.out.println(output);
+ throw new RuntimeException(exceptionMessage);
+ }
+ }
+
+ /**
+ * Checks that dead objects are not promoted.
+ * @param plabPromoted promoted by PLAB
+ * @param directlyPromoted
+ * @param memoryAllocated total memory allocated
+ */
+ private static void checkDeadObjectsPromotion(long plabPromoted, long directlyPromoted, long memoryAllocated) {
+ // No dead objects should be promoted
+ if (!(checkRatio(plabPromoted, memoryAllocated) && checkRatio(directlyPromoted, memoryAllocated))) {
+ System.out.println(output);
+ throw new RuntimeException("Unreachable objects should not be allocated using PLAB or directly allocated to Survivor/Old");
+ }
+ }
+
+ /**
+ * Checks that PLAB statistics contains expected fields.
+ * @param info
+ */
+ private static void checkFields(PlabInfo info) {
+ if (!info.checkFields(FIELDS_TO_EXTRACT)) {
+ System.out.println(output);
+ throw new RuntimeException("PLAB log does not contain expected fields");
+ }
+ }
+
/**
* Returns true if checkedValue is less than MEM_DIFFERENCE_PCT percent of controlValue.
*
@@ -215,14 +245,6 @@
return (Math.abs(checkedValue - controlValue) / controlValue) * 100L < MEM_DIFFERENCE_PCT;
}
- private static Map<String, Long> getPlabStats(LogParser logParser, LogParser.ReportType type, long gc_id) {
-
- Map<String, Long> survivorStats = logParser.getEntries()
- .get(gc_id)
- .get(type);
- return survivorStats;
- }
-
/**
* Description of one test case.
*/
--- a/hotspot/test/gc/g1/plab/TestPLABResize.java Thu Mar 24 10:40:23 2016 +0100
+++ b/hotspot/test/gc/g1/plab/TestPLABResize.java Thu Mar 24 13:09:16 2016 +0000
@@ -41,16 +41,15 @@
*/
package gc.g1.plab;
-import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
-import java.util.Map;
import java.util.stream.Collectors;
import java.io.PrintStream;
import gc.g1.plab.lib.LogParser;
import gc.g1.plab.lib.PLABUtils;
import gc.g1.plab.lib.AppPLABResize;
+import gc.g1.plab.lib.PlabReport;
import jdk.test.lib.OutputAnalyzer;
import jdk.test.lib.ProcessTools;
@@ -74,6 +73,8 @@
private static final int ITERATIONS_MEDIUM = 5;
private static final int ITERATIONS_HIGH = 8;
+ private static final String PLAB_SIZE_FIELD_NAME = "actual";
+
private final static TestCase[] TEST_CASES = {
new TestCase(WASTE_PCT_SMALL, OBJECT_SIZE_SMALL, GC_NUM_SMALL, ITERATIONS_MEDIUM),
new TestCase(WASTE_PCT_SMALL, OBJECT_SIZE_MEDIUM, GC_NUM_HIGH, ITERATIONS_SMALL),
@@ -109,16 +110,14 @@
*/
private static void checkResults(String output, TestCase testCase) {
final LogParser log = new LogParser(output);
- final Map<Long, Map<LogParser.ReportType, Map<String, Long>>> entries = log.getEntries();
+ final PlabReport report = log.getEntries();
- final ArrayList<Long> plabSizes = entries.entrySet()
- .stream()
- .map(item -> {
- return item.getValue()
- .get(LogParser.ReportType.SURVIVOR_STATS)
- .get("actual");
- })
- .collect(Collectors.toCollection(ArrayList::new));
+ final List<Long> plabSizes = report.entryStream()
+ .map(item -> item.getValue()
+ .get(LogParser.ReportType.SURVIVOR_STATS)
+ .get(PLAB_SIZE_FIELD_NAME)
+ )
+ .collect(Collectors.toList());
// Check that desired plab size was changed during iterations.
// The test case does 3 rounds of allocations. The second round of N allocations and GC's
--- a/hotspot/test/gc/g1/plab/lib/LogParser.java Thu Mar 24 10:40:23 2016 +0100
+++ b/hotspot/test/gc/g1/plab/lib/LogParser.java Thu Mar 24 13:09:16 2016 +0000
@@ -22,13 +22,15 @@
*/
package gc.g1.plab.lib;
-import java.util.EnumMap;
+import java.util.Arrays;
import java.util.HashMap;
+import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
+import java.util.stream.Collectors;
/**
* LogParser class parses VM output to get PLAB and ConsumptionStats values.
@@ -44,9 +46,6 @@
*/
final public class LogParser {
- // Name for GC ID field in report.
- public final static String GC_ID = "gc_id";
-
/**
* Type of parsed log element.
*/
@@ -58,7 +57,7 @@
private final String log;
// Contains Map of PLAB statistics for given log.
- private final Map<Long, Map<ReportType, Map<String, Long>>> report;
+ private final PlabReport report;
// GC ID
private static final Pattern GC_ID_PATTERN = Pattern.compile("\\[gc,plab\\s*\\] GC\\((\\d+)\\)");
@@ -91,56 +90,107 @@
*
* @return The log entries for the Survivor and Old stats.
*/
- public Map<Long, Map<ReportType, Map<String, Long>>> getEntries() {
+ public PlabReport getEntries() {
return report;
}
- private Map<Long, Map<ReportType, Map<String, Long>>> parseLines() throws NumberFormatException {
+ private PlabReport parseLines() throws NumberFormatException {
Scanner lineScanner = new Scanner(log);
- Map<Long, Map<ReportType, Map<String, Long>>> allocationStatistics = new HashMap<>();
+ PlabReport plabReport = new PlabReport();
Optional<Long> gc_id;
while (lineScanner.hasNextLine()) {
String line = lineScanner.nextLine();
- gc_id = getGcId(line);
+ gc_id = getGcId(line, GC_ID_PATTERN);
if (gc_id.isPresent()) {
Matcher matcher = PAIRS_PATTERN.matcher(line);
if (matcher.find()) {
- Map<ReportType, Map<String, Long>> oneReportItem;
- ReportType reportType;
-
- if (!allocationStatistics.containsKey(gc_id.get())) {
- allocationStatistics.put(gc_id.get(), new EnumMap<>(ReportType.class));
+ if (!plabReport.containsKey(gc_id.get())) {
+ plabReport.put(gc_id.get(), new PlabGCStatistics());
}
+ ReportType reportType = line.contains("Young") ? ReportType.SURVIVOR_STATS : ReportType.OLD_STATS;
- if (line.contains("Young")) {
- reportType = ReportType.SURVIVOR_STATS;
- } else {
- reportType = ReportType.OLD_STATS;
- }
-
- oneReportItem = allocationStatistics.get(gc_id.get());
- if (!oneReportItem.containsKey(reportType)) {
- oneReportItem.put(reportType, new HashMap<>());
+ PlabGCStatistics gcStat = plabReport.get(gc_id.get());
+ if (!gcStat.containsKey(reportType)) {
+ gcStat.put(reportType, new PlabInfo());
}
// Extract all pairs from log.
- Map<String, Long> plabStats = oneReportItem.get(reportType);
+ PlabInfo plabInfo = gcStat.get(reportType);
do {
String pair = matcher.group();
String[] nameValue = pair.replaceAll(": ", ":").split(":");
- plabStats.put(nameValue[0].trim(), Long.parseLong(nameValue[1]));
+ plabInfo.put(nameValue[0].trim(), Long.parseLong(nameValue[1]));
} while (matcher.find());
}
}
}
- return allocationStatistics;
+ return plabReport;
}
- private Optional<Long> getGcId(String line) {
- Matcher number = GC_ID_PATTERN.matcher(line);
+ private static Optional<Long> getGcId(String line, Pattern pattern) {
+ Matcher number = pattern.matcher(line);
if (number.find()) {
return Optional.of(Long.parseLong(number.group(1)));
}
return Optional.empty();
}
+
+ /**
+ * Extracts GC ID from log.
+ *
+ * @param line - one line of log.
+ * @return GC ID
+ */
+ public static Long getGcIdFromLine(String line, Pattern pattern) {
+ Optional<Long> gcId = getGcId(line, pattern);
+ if (!gcId.isPresent()) {
+ System.out.println(line);
+ throw new RuntimeException("Cannot find GC ID in log.");
+ }
+ return gcId.get();
+ }
+
+ /**
+ * Returns Map<Long,PlabStatistics> which contains specified statistics for specified gc ids.
+ * @param specifiedGcId gc id to get
+ * @param type PLAB type
+ * @param fieldsName name of fields in PlabStatistics
+ * @return
+ **/
+ public Map<Long, PlabInfo> getSpecifiedStats(List<Long> specifiedGcId, LogParser.ReportType type, List<String> fieldsName) {
+ return getSpecifiedStats(specifiedGcId, type, fieldsName, true);
+ }
+
+ /**
+ * Returns PlabStatistics for specified GC ID.
+ * @param specifiedGcId
+ * @param type type of statistics
+ * @param fieldsName name of fields in PlabStatistics
+ * @return
+ **/
+ public PlabInfo getSpecifiedStats(long specifiedGcId, LogParser.ReportType type, List<String> fieldsName) {
+ return getSpecifiedStats(Arrays.asList(specifiedGcId), type, fieldsName, true).get(specifiedGcId);
+ }
+
+ /**
+ * Returns Map<Long,PlabStatistics> which contains specified statistics. Filters out specified gc ids.
+ * @param specifiedGcIdForExclude
+ * @param type
+ * @param fieldsName
+ * @return
+ **/
+ public Map<Long, PlabInfo> getExcludedSpecifiedStats(List<Long> specifiedGcIdForExclude, LogParser.ReportType type, List<String> fieldsName) {
+ return getSpecifiedStats(specifiedGcIdForExclude, type, fieldsName, false);
+ }
+
+ private Map<Long, PlabInfo> getSpecifiedStats(List<Long> gcIds, LogParser.ReportType type, List<String> fieldNames, boolean extractId) {
+ return new HashMap<>(
+ getEntries().entryStream()
+ .filter(gcLogItem -> extractId == gcIds.contains(gcLogItem.getKey()))
+ .collect(Collectors.toMap(gcLogItem -> gcLogItem.getKey(),
+ gcLogItem -> gcLogItem.getValue().get(type).filter(fieldNames)
+ )
+ )
+ );
+ }
}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/g1/plab/lib/PlabGCStatistics.java Thu Mar 24 13:09:16 2016 +0000
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2016, 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.
+ */
+package gc.g1.plab.lib;
+
+import java.util.EnumMap;
+import java.util.Map;
+
+import gc.g1.plab.lib.LogParser.ReportType;
+
+/**
+ * Class that represents PLAB statistics for a single GC.
+ * It includes both Survivor and Old PLAB statistics.
+ */
+public class PlabGCStatistics {
+
+ private final Map<ReportType, PlabInfo> plabGCStatistics;
+
+ public PlabGCStatistics() {
+ plabGCStatistics = new EnumMap<>(ReportType.class);
+ }
+
+ /**
+ * Checks if the statistics contains the requested type.
+ * @param reportType
+ * @returns true, if contains, false otherwise
+ */
+ public boolean containsKey(ReportType reportType) {
+ return plabGCStatistics.containsKey(reportType);
+ }
+
+ /**
+ * Put pair of ReportType and PlabInfo to statistics.
+ * @param reportType
+ * @param plabInfo
+ */
+ public void put(ReportType reportType, PlabInfo plabInfo) {
+ plabGCStatistics.put(reportType, plabInfo);
+ }
+
+ /**
+ * Returns PlabInfo of specified type
+ * @param reportType
+ * @return
+ */
+ public PlabInfo get(ReportType reportType) {
+ return plabGCStatistics.get(reportType);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/g1/plab/lib/PlabInfo.java Thu Mar 24 13:09:16 2016 +0000
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2016, 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.
+ */
+package gc.g1.plab.lib;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class PlabInfo {
+
+ private final Map<String, Long> plabInfo;
+
+ public PlabInfo() {
+ plabInfo = new HashMap<>();
+ }
+
+ private PlabInfo(Map<String, Long> map) {
+ plabInfo = new HashMap<>(map);
+ }
+
+ /**
+ * Add key and value to underlying Map.
+ * @param key PLAB info field name
+ * @param value PLAB info value for field
+ */
+ public void put(String key, long value) {
+ plabInfo.put(key, value);
+ }
+
+ /**
+ * Get stream of Map.Entry representing underlying Map with PLAB information.
+ */
+ public Stream<Map.Entry<String, Long>> entryStream() {
+ return plabInfo.entrySet().stream();
+ }
+
+ /**
+ * Returns the PlabInfo narrowed for the given fields only
+ * @param fields
+ * @return PlabInfo
+ */
+ public PlabInfo filter(List<String> fields) {
+ return new PlabInfo(entryStream()
+ .filter(field -> fields.contains(field.getKey()))
+ .collect(Collectors.toMap(
+ item -> item.getKey(),
+ item -> item.getValue())
+ )
+ );
+ }
+
+ /**
+ * Checks if statistic contains expected fields.
+ * @param fields fields which should be in statistic
+ * @return true if all fields are in statistic, false otherwise
+ */
+ public boolean checkFields(List<String> fields) {
+ for (String key : fields) {
+ if (!plabInfo.containsKey(key)) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Return a collection of the values.
+ * @return collection of values
+ */
+ public Collection<Long> values() {
+ return plabInfo.values();
+ }
+
+ /**
+ * Get value for specified field.
+ * @param field
+ * @return long value which is contained in specified field
+ */
+ public long get(String field) {
+ return plabInfo.get(field);
+ }
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/g1/plab/lib/PlabReport.java Thu Mar 24 13:09:16 2016 +0000
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2016, 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.
+ */
+package gc.g1.plab.lib;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Stream;
+
+/**
+ * Class contains representation of GC PLAB log.
+ */
+public class PlabReport {
+
+ private final Map<Long, PlabGCStatistics> report = new HashMap<>();
+
+ public PlabReport() {
+ }
+
+ /**
+ * Checks if underlying Map contains requested GC ID.
+ */
+ public boolean containsKey(Long gcId) {
+ return report.containsKey(gcId);
+ }
+
+ /**
+ * Puts GC ID and PlabGCStatistics to underlying Map.
+ */
+ public void put(Long gcId, PlabGCStatistics plabStat) {
+ report.put(gcId, plabStat);
+ }
+
+ /**
+ * Returns PlabGCStatistics for specified GC ID.
+ */
+ public PlabGCStatistics get(Long gcId) {
+ return report.get(gcId);
+ }
+
+ /**
+ * Returns Stream of Map.Entry of underlying Map.
+ */
+ public Stream<Map.Entry<Long, PlabGCStatistics>> entryStream() {
+ return report.entrySet().stream();
+ }
+}