29 import java.io.Reader;
30 import java.util.ArrayList;
31 import java.util.Arrays;
32 import java.util.List;
33 import java.util.LinkedHashMap;
34 import java.util.Map;
35 import java.util.StringTokenizer;
36 import java.util.function.Predicate;
37 import jdk.test.lib.OutputAnalyzer;
38 import jdk.test.lib.Platform;
39 import jdk.test.lib.ProcessTools;
40
41 public class JVMOptionsUtils {
42
43 /* Java option which print options with ranges */
44 private static final String PRINT_FLAGS_RANGES = "-XX:+PrintFlagsRanges";
45
46 /* StringBuilder to accumulate failed message */
47 private static final StringBuilder finalFailedMessage = new StringBuilder();
48
49 /**
50 * Add dependency for option depending on it's name. E.g. enable G1 GC for
51 * G1 options or add prepend options to not hit constraints.
52 *
53 * @param option option
54 */
55 private static void addNameDependency(JVMOption option) {
56 String name = option.getName();
57
58 if (name.startsWith("G1")) {
59 option.addPrepend("-XX:+UseG1GC");
60 }
61
62 if (name.startsWith("CMS")) {
63 option.addPrepend("-XX:+UseConcMarkSweepGC");
64 }
65
66 switch (name) {
67 case "MinHeapFreeRatio":
68 option.addPrepend("-XX:MaxHeapFreeRatio=100");
314 * @param withRanges true if needed options with defined ranges inside JVM
315 * @param acceptOrigin predicate for option origins. Origins can be
316 * "product", "diagnostic" etc. Accept option only if acceptOrigin evaluates
317 * to true.
318 * @param additionalArgs additional arguments to the Java process which ran
319 * with "-XX:+PrintFlagsRanges"
320 * @return map from option name to the JVMOption object
321 * @throws Exception if a new process can not be created or an error
322 * occurred while reading the data
323 */
324 public static Map<String, JVMOption> getOptionsAsMap(boolean withRanges, Predicate<String> acceptOrigin,
325 String... additionalArgs) throws Exception {
326 Map<String, JVMOption> result;
327 Process p;
328 List<String> runJava = new ArrayList<>();
329
330 if (additionalArgs.length > 0) {
331 runJava.addAll(Arrays.asList(additionalArgs));
332 }
333
334 if (Platform.isClient()) {
335 runJava.add("-client");
336 }
337
338 runJava.add(PRINT_FLAGS_RANGES);
339 runJava.add("-version");
340
341 p = ProcessTools.createJavaProcessBuilder(runJava.toArray(new String[0])).start();
342
343 result = getJVMOptions(new InputStreamReader(p.getInputStream()), withRanges, acceptOrigin);
344
345 p.waitFor();
346
347 return result;
348 }
349
350 /**
351 * Get JVM options as list. Can return options with defined ranges or
352 * options without range depending on "withRanges" argument. "acceptOrigin"
353 * predicate can be used to filter option origin.
354 *
355 * @param withRanges true if needed options with defined ranges inside JVM
356 * @param acceptOrigin predicate for option origins. Origins can be
357 * "product", "diagnostic" etc. Accept option only if acceptOrigin evaluates
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29 import java.io.Reader;
30 import java.util.ArrayList;
31 import java.util.Arrays;
32 import java.util.List;
33 import java.util.LinkedHashMap;
34 import java.util.Map;
35 import java.util.StringTokenizer;
36 import java.util.function.Predicate;
37 import jdk.test.lib.OutputAnalyzer;
38 import jdk.test.lib.Platform;
39 import jdk.test.lib.ProcessTools;
40
41 public class JVMOptionsUtils {
42
43 /* Java option which print options with ranges */
44 private static final String PRINT_FLAGS_RANGES = "-XX:+PrintFlagsRanges";
45
46 /* StringBuilder to accumulate failed message */
47 private static final StringBuilder finalFailedMessage = new StringBuilder();
48
49 /* Used to start the JVM with the same type as current */
50 static String VMType;
51
52 static {
53 if (Platform.isServer()) {
54 VMType = "-server";
55 } else if (Platform.isClient()) {
56 VMType = "-client";
57 } else if (Platform.isMinimal()) {
58 VMType = "-minimal";
59 } else if (Platform.isGraal()) {
60 VMType = "-graal";
61 } else {
62 VMType = null;
63 }
64 }
65
66 /**
67 * Add dependency for option depending on it's name. E.g. enable G1 GC for
68 * G1 options or add prepend options to not hit constraints.
69 *
70 * @param option option
71 */
72 private static void addNameDependency(JVMOption option) {
73 String name = option.getName();
74
75 if (name.startsWith("G1")) {
76 option.addPrepend("-XX:+UseG1GC");
77 }
78
79 if (name.startsWith("CMS")) {
80 option.addPrepend("-XX:+UseConcMarkSweepGC");
81 }
82
83 switch (name) {
84 case "MinHeapFreeRatio":
85 option.addPrepend("-XX:MaxHeapFreeRatio=100");
331 * @param withRanges true if needed options with defined ranges inside JVM
332 * @param acceptOrigin predicate for option origins. Origins can be
333 * "product", "diagnostic" etc. Accept option only if acceptOrigin evaluates
334 * to true.
335 * @param additionalArgs additional arguments to the Java process which ran
336 * with "-XX:+PrintFlagsRanges"
337 * @return map from option name to the JVMOption object
338 * @throws Exception if a new process can not be created or an error
339 * occurred while reading the data
340 */
341 public static Map<String, JVMOption> getOptionsAsMap(boolean withRanges, Predicate<String> acceptOrigin,
342 String... additionalArgs) throws Exception {
343 Map<String, JVMOption> result;
344 Process p;
345 List<String> runJava = new ArrayList<>();
346
347 if (additionalArgs.length > 0) {
348 runJava.addAll(Arrays.asList(additionalArgs));
349 }
350
351 if (VMType != null) {
352 runJava.add(VMType);
353 }
354 runJava.add(PRINT_FLAGS_RANGES);
355 runJava.add("-version");
356
357 p = ProcessTools.createJavaProcessBuilder(runJava.toArray(new String[0])).start();
358
359 result = getJVMOptions(new InputStreamReader(p.getInputStream()), withRanges, acceptOrigin);
360
361 p.waitFor();
362
363 return result;
364 }
365
366 /**
367 * Get JVM options as list. Can return options with defined ranges or
368 * options without range depending on "withRanges" argument. "acceptOrigin"
369 * predicate can be used to filter option origin.
370 *
371 * @param withRanges true if needed options with defined ranges inside JVM
372 * @param acceptOrigin predicate for option origins. Origins can be
373 * "product", "diagnostic" etc. Accept option only if acceptOrigin evaluates
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