1 /*
2 * Copyright (c) 2017, 2018, 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
21 * questions.
22 */
23
24 package compiler.valhalla.valuetypes;
25
26 import compiler.whitebox.CompilerWhiteBoxTest;
27 import jdk.test.lib.Asserts;
28 import jdk.test.lib.management.InputArguments;
29 import jdk.test.lib.Platform;
30 import jdk.test.lib.process.ProcessTools;
31 import jdk.test.lib.process.OutputAnalyzer;
32 import jdk.test.lib.Utils;
33 import sun.hotspot.WhiteBox;
34
35 import java.lang.annotation.Retention;
36 import java.lang.annotation.RetentionPolicy;
37 import java.lang.annotation.Repeatable;
38 import java.lang.invoke.*;
39 import java.lang.reflect.Method;
40 import java.util.ArrayList;
41 import java.util.Arrays;
42 import java.util.Hashtable;
43 import java.util.LinkedHashMap;
44 import java.util.List;
45 import java.util.Map;
46 import java.util.regex.Matcher;
47 import java.util.regex.Pattern;
48 import java.util.TreeMap;
49
50 // Mark method as test
51 @Retention(RetentionPolicy.RUNTIME)
52 @Repeatable(Tests.class)
53 @interface Test {
54 // Regular expression used to match forbidden IR nodes
55 // in the C2 IR emitted for this test.
56 String failOn() default "";
57 // Regular expressions used to match and count IR nodes.
58 String[] match() default { };
59 int[] matchCount() default { };
60 int valid() default ValueTypeTest.AllFlags;
61 }
62
63 @Retention(RetentionPolicy.RUNTIME)
64 @interface Tests {
65 Test[] value();
66 }
67
68 // Force method inlining during compilation
69 @Retention(RetentionPolicy.RUNTIME)
70 @interface ForceInline { }
71
72 // Prevent method inlining during compilation
73 @Retention(RetentionPolicy.RUNTIME)
74 @interface DontInline { }
75
76 // Prevent method compilation
77 @Retention(RetentionPolicy.RUNTIME)
78 @interface DontCompile { }
79
80 // Number of warmup iterations
81 @Retention(RetentionPolicy.RUNTIME)
82 @interface Warmup {
83 int value();
84 }
85
86 public abstract class ValueTypeTest {
87 // Run "jtreg -Dtest.c1=true" to enable experimental C1 testing.
88 static final boolean TEST_C1 = Boolean.getBoolean("test.c1");
89
90 // Random test values
91 public static final int rI = Utils.getRandomInstance().nextInt() % 1000;
92 public static final long rL = Utils.getRandomInstance().nextLong() % 1000;
93
94 // User defined settings
95 private static final boolean PRINT_GRAPH = true;
96 private static final boolean PRINT_TIMES = Boolean.parseBoolean(System.getProperty("PrintTimes", "false"));
97 private static boolean VERIFY_IR = Boolean.parseBoolean(System.getProperty("VerifyIR", "true")) && (!TEST_C1);
98 private static final boolean VERIFY_VM = Boolean.parseBoolean(System.getProperty("VerifyVM", "false"));
99 private static final String SCENARIOS = System.getProperty("Scenarios", "");
100 private static final String TESTLIST = System.getProperty("Testlist", "");
101 private static final String EXCLUDELIST = System.getProperty("Exclude", "");
102 private static final int WARMUP = Integer.parseInt(System.getProperty("Warmup", "251"));
103 private static final boolean DUMP_REPLAY = Boolean.parseBoolean(System.getProperty("DumpReplay", "false"));
104
105 // Pre-defined settings
106 private static final List<String> defaultFlags = Arrays.asList(
107 "-XX:-BackgroundCompilation", "-XX:CICompilerCount=1",
108 "-XX:+PrintCompilation", "-XX:+PrintIdeal", "-XX:+PrintOptoAssembly",
109 "-XX:CompileCommand=quiet",
110 "-XX:CompileCommand=compileonly,java.lang.invoke.*::*",
111 "-XX:CompileCommand=compileonly,java.lang.Long::sum",
112 "-XX:CompileCommand=compileonly,java.lang.Object::<init>",
113 "-XX:CompileCommand=compileonly,compiler.valhalla.valuetypes.*::*");
114 private static final List<String> verifyFlags = Arrays.asList(
115 "-XX:+VerifyOops", "-XX:+VerifyStack", "-XX:+VerifyLastFrame", "-XX:+VerifyBeforeGC", "-XX:+VerifyAfterGC",
116 "-XX:+VerifyDuringGC", "-XX:+VerifyAdapterSharing", "-XX:+StressValueTypeReturnedAsFields");
117
118 protected static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
119 protected static final int ValueTypePassFieldsAsArgsOn = 0x1;
120 protected static final int ValueTypePassFieldsAsArgsOff = 0x2;
121 protected static final int ValueTypeArrayFlattenOn = 0x4;
122 protected static final int ValueTypeArrayFlattenOff = 0x8;
123 protected static final int ValueTypeReturnedAsFieldsOn = 0x10;
124 protected static final int ValueTypeReturnedAsFieldsOff = 0x20;
125 static final int AllFlags = ValueTypePassFieldsAsArgsOn | ValueTypePassFieldsAsArgsOff | ValueTypeArrayFlattenOn | ValueTypeArrayFlattenOff | ValueTypeReturnedAsFieldsOn;
126 protected static final boolean ValueTypePassFieldsAsArgs = (Boolean)WHITE_BOX.getVMFlag("ValueTypePassFieldsAsArgs");
127 protected static final boolean ValueTypeArrayFlatten = (Boolean)WHITE_BOX.getVMFlag("ValueArrayFlatten");
128 protected static final boolean ValueTypeReturnedAsFields = (Boolean)WHITE_BOX.getVMFlag("ValueTypeReturnedAsFields");
129 protected static final int COMP_LEVEL_ANY = -2;
130 protected static final int COMP_LEVEL_FULL_OPTIMIZATION = TEST_C1 ? 1 : 4;
131 protected static final Hashtable<String, Method> tests = new Hashtable<String, Method>();
132 protected static final boolean USE_COMPILER = WHITE_BOX.getBooleanVMFlag("UseCompiler");
133 protected static final boolean PRINT_IDEAL = WHITE_BOX.getBooleanVMFlag("PrintIdeal");
134 protected static final boolean XCOMP = Platform.isComp();
135
136 // Regular expressions used to match nodes in the PrintIdeal output
137 protected static final String START = "(\\d+\\t(.*";
138 protected static final String MID = ".*)+\\t===.*";
139 protected static final String END = ")|";
140 protected static final String ALLOC = "(.*precise klass compiler/valhalla/valuetypes/MyValue.*\\R(.*(nop|spill).*\\R)*.*_new_instance_Java" + END;
141 protected static final String ALLOCA = "(.*precise klass \\[Lcompiler/valhalla/valuetypes/MyValue.*\\R(.*(nop|spill).*\\R)*.*_new_array_Java" + END;
142 protected static final String LOAD = START + "Load(B|S|I|L|F|D|P|N)" + MID + "@compiler/valhalla/valuetypes/MyValue.*" + END;
143 protected static final String LOADK = START + "LoadK" + MID + END;
144 protected static final String STORE = START + "Store(B|S|I|L|F|D|P|N)" + MID + "@compiler/valhalla/valuetypes/MyValue.*" + END;
145 protected static final String LOOP = START + "Loop" + MID + "" + END;
146 protected static final String TRAP = START + "CallStaticJava" + MID + "uncommon_trap.*(unstable_if|predicate)" + END;
147 protected static final String RETURN = START + "Return" + MID + "returns" + END;
148 protected static final String LINKTOSTATIC = START + "CallStaticJava" + MID + "linkToStatic" + END;
149 protected static final String NPE = START + "CallStaticJava" + MID + "null_check" + END;
150 protected static final String CALL = START + "CallStaticJava" + MID + END;
151 protected static final String STOREVALUETYPEFIELDS = START + "CallStaticJava" + MID + "store_value_type_fields" + END;
152 protected static final String SCOBJ = "(.*# ScObj.*" + END;
153
154 public static String[] concat(String prefix[], String... extra) {
155 ArrayList<String> list = new ArrayList<String>();
156 if (prefix != null) {
157 for (String s : prefix) {
158 list.add(s);
159 }
160 }
161 if (extra != null) {
162 for (String s : extra) {
163 list.add(s);
164 }
165 }
166
167 return list.toArray(new String[list.size()]);
168 }
169
170 /**
171 * Override getNumScenarios and getVMParameters if you want to run with more than
172 * the 5 built-in scenarios
173 */
174 public int getNumScenarios() {
175 if (TEST_C1) {
176 return 1;
177 } else {
178 return 5;
179 }
180 }
181
182 /**
183 * VM paramaters for the 5 built-in test scenarios. If your test needs to append
184 * extra parameters for (some of) these scenarios, override getExtraVMParameters().
185 */
186 public String[] getVMParameters(int scenario) {
187 if (TEST_C1) {
188 return new String[] {
189 "-XX:+EnableValhallaC1",
190 };
191 }
192
193 switch (scenario) {
194 case 0: return new String[] {
195 "-XX:+AlwaysIncrementalInline",
196 "-XX:ValueArrayElemMaxFlatOops=-1",
197 "-XX:ValueArrayElemMaxFlatSize=-1",
198 "-XX:+ValueArrayFlatten",
199 "-XX:ValueFieldMaxFlatSize=-1",
200 "-XX:+ValueTypePassFieldsAsArgs",
201 "-XX:+ValueTypeReturnedAsFields"};
202 case 1: return new String[] {
203 "-XX:-UseCompressedOops",
204 "-XX:ValueArrayElemMaxFlatOops=-1",
205 "-XX:ValueArrayElemMaxFlatSize=-1",
206 "-XX:+ValueArrayFlatten",
207 "-XX:ValueFieldMaxFlatSize=-1",
208 "-XX:-ValueTypePassFieldsAsArgs",
209 "-XX:-ValueTypeReturnedAsFields"};
210 case 2: return new String[] {
211 "-DVerifyIR=false",
212 "-XX:-UseCompressedOops",
213 "-XX:ValueArrayElemMaxFlatOops=0",
214 "-XX:ValueArrayElemMaxFlatSize=0",
215 "-XX:-ValueArrayFlatten",
216 "-XX:ValueFieldMaxFlatSize=0",
217 "-XX:+ValueTypePassFieldsAsArgs",
218 "-XX:+ValueTypeReturnedAsFields"};
219 case 3: return new String[] {
220 "-DVerifyIR=false",
221 "-XX:+AlwaysIncrementalInline",
222 "-XX:ValueArrayElemMaxFlatOops=0",
223 "-XX:ValueArrayElemMaxFlatSize=0",
224 "-XX:ValueFieldMaxFlatSize=0",
225 "-XX:-ValueTypePassFieldsAsArgs",
226 "-XX:-ValueTypeReturnedAsFields"};
227 case 4: return new String[] {
228 "-DVerifyIR=false",
229 "-XX:ValueArrayElemMaxFlatOops=-1",
230 "-XX:ValueArrayElemMaxFlatSize=-1",
231 "-XX:+ValueArrayFlatten",
232 "-XX:ValueFieldMaxFlatSize=0",
233 "-XX:+ValueTypePassFieldsAsArgs",
234 "-XX:-ValueTypeReturnedAsFields"};
235 }
236
237 return null;
238 }
239
240 /**
241 * Override this method to provide extra parameters for selected scenarios
242 */
243 public String[] getExtraVMParameters(int scenario) {
244 return null;
245 }
246
247 public static void main(String[] args) throws Throwable {
248 if (args.length != 1) {
249 throw new RuntimeException("Usage: @run main/othervm/timeout=120 -Xbootclasspath/a:. -ea" +
250 " -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockDiagnosticVMOptions" +
251 " -XX:+UnlockExperimentalVMOptions -XX:+WhiteBoxAPI -XX:+EnableValhalla" +
252 " compiler.valhalla.valuetypes.ValueTypeTest <YourTestMainClass>");
253 }
254 String testMainClassName = args[0];
255 Class testMainClass = Class.forName(testMainClassName);
256 ValueTypeTest test = (ValueTypeTest)testMainClass.newInstance();
257 List<String> scenarios = null;
258 if (!SCENARIOS.isEmpty()) {
259 scenarios = Arrays.asList(SCENARIOS.split(","));
260 }
261 for (int i=0; i<test.getNumScenarios(); i++) {
262 if (scenarios == null || scenarios.contains(Integer.toString(i))) {
263 System.out.println("Scenario #" + i + " -------- ");
264 String[] cmds = InputArguments.getVmInputArgs();
265 cmds = concat(cmds, test.getVMParameters(i));
266 cmds = concat(cmds, test.getExtraVMParameters(i));
267 cmds = concat(cmds, testMainClassName);
268
269 OutputAnalyzer oa = ProcessTools.executeTestJvm(cmds);
270 String output = oa.getOutput();
271 oa.shouldHaveExitValue(0);
272 System.out.println(output);
273 } else {
274 System.out.println("Scenario #" + i + " is skipped due to -Dscenarios=" + SCENARIOS);
275 }
276 }
277 }
278
279 protected ValueTypeTest() {
280 List<String> list = null;
281 List<String> exclude = null;
282 if (!TESTLIST.isEmpty()) {
283 list = Arrays.asList(TESTLIST.split(","));
284 }
285 if (!EXCLUDELIST.isEmpty()) {
286 exclude = Arrays.asList(EXCLUDELIST.split(","));
287 }
288 // Gather all test methods and put them in Hashtable
289 for (Method m : getClass().getDeclaredMethods()) {
290 Test[] annos = m.getAnnotationsByType(Test.class);
291 if (annos.length != 0 &&
292 ((list == null || list.contains(m.getName())) && (exclude == null || !exclude.contains(m.getName())))) {
293 tests.put(getClass().getSimpleName() + "::" + m.getName(), m);
294 }
295 }
296 }
297
298 protected void run(String[] args, Class<?>... classes) throws Throwable {
299 if (args.length == 0) {
300 // Spawn a new VM instance
301 execute_vm();
302 } else {
303 // Execute tests
304 run(classes);
305 }
306 }
307
308 private void execute_vm() throws Throwable {
309 Asserts.assertFalse(tests.isEmpty(), "no tests to execute");
310 ArrayList<String> args = new ArrayList<String>(defaultFlags);
311 String[] vmInputArgs = InputArguments.getVmInputArgs();
312 if (VERIFY_IR) {
313 for (String arg : vmInputArgs) {
314 if (arg.startsWith("-XX:CompileThreshold")) {
315 // Disable IR verification if
316 VERIFY_IR = false;
317 }
318 // Check if the JVM supports value type specific default arguments from the test's run commands
319 if (arg.startsWith("-XX:+ValueTypePassFieldsAsArgs") ||
320 arg.startsWith("-XX:+ValueTypeReturnedAsFields")) {
321 Boolean value = (Boolean)WHITE_BOX.getVMFlag(arg.substring(5));
322 if (!value) {
323 System.out.println("WARNING: could not enable " + arg.substring(5) + ". Skipping IR verification.");
324 VERIFY_IR = false;
325 }
326 } else if (arg.startsWith("-XX:-ValueTypePassFieldsAsArgs") ||
327 arg.startsWith("-XX:-ValueTypeReturnedAsFields")) {
328 Boolean value = (Boolean)WHITE_BOX.getVMFlag(arg.substring(5));
329 if (value) {
330 System.out.println("WARNING: could not disable " + arg.substring(5) + ". Skipping IR verification.");
331 VERIFY_IR = false;
332 }
333 }
334 }
335 // Always trap for exception throwing to not confuse IR verification
336 args.add("-XX:-OmitStackTraceInFastThrow");
337 }
338 if (VERIFY_VM) {
339 args.addAll(verifyFlags);
340 }
341 // Run tests in own process and verify output
342 args.add(getClass().getName());
343 args.add("run");
344 // Spawn process with default JVM options from the test's run command
345 String[] cmds = Arrays.copyOf(vmInputArgs, vmInputArgs.length + args.size());
346 System.arraycopy(args.toArray(), 0, cmds, vmInputArgs.length, args.size());
347 OutputAnalyzer oa = ProcessTools.executeTestJvm(cmds);
348 // If ideal graph printing is enabled/supported, verify output
349 String output = oa.getOutput();
350 oa.shouldHaveExitValue(0);
351 if (VERIFY_IR) {
352 if (output.contains("PrintIdeal enabled")) {
353 parseOutput(output);
354 } else {
355 System.out.println(output);
356 System.out.println("WARNING: IR verification failed! Running with -Xint, -Xcomp or release build?");
357 }
358 }
359 }
360
361 private void parseOutput(String output) throws Exception {
362 Pattern comp_re = Pattern.compile("\\n\\s+\\d+\\s+\\d+\\s+(%| )(s| )(!| )b(n| )\\s+\\S+\\.(?<name>[^.]+::\\S+)\\s+(?<osr>@ \\d+\\s+)?[(]\\d+ bytes[)]\\n");
363 Matcher m = comp_re.matcher(output);
364 Map<String,String> compilations = new LinkedHashMap<>();
365 int prev = 0;
366 String methodName = null;
367 while (m.find()) {
368 if (prev == 0) {
369 // Print header
370 System.out.print(output.substring(0, m.start()+1));
371 } else if (methodName != null) {
372 compilations.put(methodName, output.substring(prev, m.start()+1));
373 }
374 if (m.group("osr") != null) {
375 methodName = null;
376 } else {
377 methodName = m.group("name");
378 }
379 prev = m.end();
380 }
381 if (prev == 0) {
382 // Print header
383 System.out.print(output);
384 } else if (methodName != null) {
385 compilations.put(methodName, output.substring(prev));
386 }
387 // Iterate over compilation output
388 for (String testName : compilations.keySet()) {
389 Method test = tests.get(testName);
390 if (test == null) {
391 // Skip helper methods
392 continue;
393 }
394 String graph = compilations.get(testName);
395 if (PRINT_GRAPH) {
396 System.out.println("\nGraph for " + testName + "\n" + graph);
397 }
398 // Parse graph using regular expressions to determine if it contains forbidden nodes
399 Test[] annos = test.getAnnotationsByType(Test.class);
400 Test anno = null;
401 for (Test a : annos) {
402 if ((a.valid() & ValueTypePassFieldsAsArgsOn) != 0 && ValueTypePassFieldsAsArgs) {
403 assert anno == null;
404 anno = a;
405 } else if ((a.valid() & ValueTypePassFieldsAsArgsOff) != 0 && !ValueTypePassFieldsAsArgs) {
406 assert anno == null;
407 anno = a;
408 } else if ((a.valid() & ValueTypeArrayFlattenOn) != 0 && ValueTypeArrayFlatten) {
409 assert anno == null;
410 anno = a;
411 } else if ((a.valid() & ValueTypeArrayFlattenOff) != 0 && !ValueTypeArrayFlatten) {
412 assert anno == null;
413 anno = a;
414 } else if ((a.valid() & ValueTypeReturnedAsFieldsOn) != 0 && ValueTypeReturnedAsFields) {
415 assert anno == null;
416 anno = a;
417 } else if ((a.valid() & ValueTypeReturnedAsFieldsOff) != 0 && !ValueTypeReturnedAsFields) {
418 assert anno == null;
419 anno = a;
420 }
421 }
422 assert anno != null;
423 String regexFail = anno.failOn();
424 if (!regexFail.isEmpty()) {
425 Pattern pattern = Pattern.compile(regexFail.substring(0, regexFail.length()-1));
426 Matcher matcher = pattern.matcher(graph);
427 boolean found = matcher.find();
428 Asserts.assertFalse(found, "Graph for '" + testName + "' contains forbidden node:\n" + (found ? matcher.group() : ""));
429 }
430 String[] regexMatch = anno.match();
431 int[] matchCount = anno.matchCount();
432 for (int i = 0; i < regexMatch.length; ++i) {
433 Pattern pattern = Pattern.compile(regexMatch[i].substring(0, regexMatch[i].length()-1));
434 Matcher matcher = pattern.matcher(graph);
435 int count = 0;
436 String nodes = "";
437 while (matcher.find()) {
438 count++;
439 nodes += matcher.group() + "\n";
440 }
441 if (matchCount[i] < 0) {
442 Asserts.assertLTE(Math.abs(matchCount[i]), count, "Graph for '" + testName + "' contains different number of match nodes:\n" + nodes);
443 } else {
444 Asserts.assertEQ(matchCount[i], count, "Graph for '" + testName + "' contains different number of match nodes:\n" + nodes);
445 }
446 }
447 tests.remove(testName);
448 System.out.println(testName + " passed");
449 }
450 // Check if all tests were compiled
451 if (tests.size() != 0) {
452 for (String name : tests.keySet()) {
453 System.out.println("Test '" + name + "' not compiled!");
454 }
455 throw new RuntimeException("Not all tests were compiled");
456 }
457 }
458
459 private void setup(Class<?> clazz) {
460 if (XCOMP) {
461 // Don't control compilation if -Xcomp is enabled
462 return;
463 }
464 if (DUMP_REPLAY) {
465 // Generate replay compilation files
466 String directive = "[{ match: \"*.*\", DumpReplay: true }]";
467 if (WHITE_BOX.addCompilerDirective(directive) != 1) {
468 throw new RuntimeException("Failed to add compiler directive");
469 }
470 }
471
472 Method[] methods = clazz.getDeclaredMethods();
473 for (Method m : methods) {
474 if (m.isAnnotationPresent(Test.class)) {
475 // Don't inline tests
476 WHITE_BOX.testSetDontInlineMethod(m, true);
477 }
478 if (m.isAnnotationPresent(DontCompile.class)) {
479 WHITE_BOX.makeMethodNotCompilable(m, COMP_LEVEL_ANY, true);
480 WHITE_BOX.makeMethodNotCompilable(m, COMP_LEVEL_ANY, false);
481 WHITE_BOX.testSetDontInlineMethod(m, true);
482 }
483 if (m.isAnnotationPresent(ForceInline.class)) {
484 WHITE_BOX.testSetForceInlineMethod(m, true);
485 } else if (m.isAnnotationPresent(DontInline.class)) {
486 WHITE_BOX.testSetDontInlineMethod(m, true);
487 }
488 }
489
490 // Compile class initializers
491 WHITE_BOX.enqueueInitializerForCompilation(clazz, COMP_LEVEL_FULL_OPTIMIZATION);
492 }
493
494 private void run(Class<?>... classes) throws Exception {
495 if (USE_COMPILER && PRINT_IDEAL && !XCOMP) {
496 System.out.println("PrintIdeal enabled");
497 }
498 System.out.format("rI = %d, rL = %d\n", rI, rL);
499
500 setup(getClass());
501 for (Class<?> clazz : classes) {
502 setup(clazz);
503 }
504
505 // Execute tests
506 TreeMap<Long, String> durations = PRINT_TIMES ? new TreeMap<Long, String>() : null;
507 for (Method test : tests.values()) {
508 long startTime = System.nanoTime();
509 Method verifier = getClass().getMethod(test.getName() + "_verifier", boolean.class);
510 // Warmup using verifier method
511 Warmup anno = test.getAnnotation(Warmup.class);
512 int warmup = anno == null ? WARMUP : anno.value();
513 for (int i = 0; i < warmup; ++i) {
514 verifier.invoke(this, true);
515 }
516 // Trigger compilation
517 WHITE_BOX.enqueueMethodForCompilation(test, COMP_LEVEL_FULL_OPTIMIZATION);
518 Asserts.assertTrue(!USE_COMPILER || WHITE_BOX.isMethodCompiled(test, false), test + " not compiled");
519 // Check result
520 verifier.invoke(this, false);
521 if (PRINT_TIMES) {
522 long endTime = System.nanoTime();
523 long duration = (endTime - startTime);
524 durations.put(duration, test.getName());
525 }
526 }
527
528 // Print execution times
529 if (PRINT_TIMES) {
530 System.out.println("\n\nTest execution times:");
531 for (Map.Entry<Long, String> entry : durations.entrySet()) {
532 System.out.format("%-10s%15d ns\n", entry.getValue() + ":", entry.getKey());
533 }
534 }
535 }
536 }