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…ctedConst * spockframework/master: Use multiple locks in ByteBuddyMockFactory to reduce lock contention (spockframework#1778) Fixup LICENSE file after change to geantyref (spockframework#1773) # Conflicts: # spock-core/src/main/java/org/spockframework/mock/runtime/ByteBuddyMockFactory.java
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146 changes: 146 additions & 0 deletions
146
...src/test/groovy/org/spockframework/mock/runtime/ByteBuddyMockFactoryConcurrentSpec.groovy
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| /* | ||
| * Copyright 2023 the original author or authors. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package org.spockframework.mock.runtime | ||
|
|
||
| import groovy.transform.Canonical | ||
| import spock.lang.Shared | ||
| import spock.lang.Specification | ||
| import spock.lang.Timeout | ||
|
|
||
| import java.util.concurrent.CompletableFuture | ||
| import java.util.concurrent.Phaser | ||
| import java.util.concurrent.TimeUnit | ||
| import java.util.function.Function | ||
|
|
||
| class ByteBuddyMockFactoryConcurrentSpec extends Specification { | ||
| private static final String IfA = "IfA" | ||
| private static final String IfB = "IfB" | ||
| private static final String IfC = "IfC" | ||
| @Shared | ||
| final IProxyBasedMockInterceptor interceptor = Stub() | ||
|
|
||
| def "ensure lockMask bit patterns"() { | ||
| expect: | ||
| 1 << Integer.bitCount(ByteBuddyMockFactory.CACHE_LOCK_MASK) - 1 == Integer.highestOneBit(ByteBuddyMockFactory.CACHE_LOCK_MASK) | ||
| } | ||
|
|
||
| // Just to be save to abort, normally the tests run in 2 secs. | ||
| @Timeout(40) | ||
| def "cacheLockingStressTest #test"() { | ||
| given: | ||
| int iterations = 5_000 | ||
| def tempClassLoader = new ByteBuddyTestClassLoader() | ||
| MockFeatures featA = toMockFeatures(mockSpecA, tempClassLoader) | ||
| MockFeatures featB = toMockFeatures(mockSpecB, tempClassLoader) | ||
| ByteBuddyMockFactory mockFactory = new ByteBuddyMockFactory() | ||
|
|
||
| Phaser phaser = new Phaser(4) | ||
| Function<Runnable, CompletableFuture<Void>> runCode = { Runnable code -> | ||
| CompletableFuture.runAsync { | ||
| phaser.arriveAndAwaitAdvance() | ||
| try { | ||
| for (int i = 0; i < iterations; i++) { | ||
| code.run() | ||
| } | ||
| } finally { | ||
| phaser.arrive() | ||
| } | ||
| } | ||
| } | ||
| when: | ||
| def mockFeatAFuture = runCode.apply { | ||
| Class<?> mockClass = mockClass(mockFactory, tempClassLoader, featA) | ||
| assertValidMockClass(featA, mockClass, tempClassLoader) | ||
| } | ||
|
|
||
| def mockFeatBFuture = runCode.apply { | ||
| Class<?> mockClass = mockClass(mockFactory, tempClassLoader, featB) | ||
| assertValidMockClass(featB, mockClass, tempClassLoader) | ||
| } | ||
|
|
||
| def cacheFuture = runCode.apply { mockFactory.CACHE.clear() } | ||
|
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||
| phaser.arriveAndAwaitAdvance() | ||
| // Wait for test to end | ||
| int phase = phaser.arrive() | ||
| try { | ||
| phaser.awaitAdvanceInterruptibly(phase, 30, TimeUnit.SECONDS) | ||
| } finally { | ||
| // Collect exceptions from the futures, to make issues visible. | ||
| mockFeatAFuture.getNow(null) | ||
| mockFeatBFuture.getNow(null) | ||
| cacheFuture.getNow(null) | ||
| } | ||
| then: | ||
| noExceptionThrown() | ||
|
|
||
| where: | ||
| test | mockSpecA | mockSpecB | ||
| "same hashcode different mockType" | mockSpec(IfA, IfB) | mockSpec(IfB, IfA) | ||
| "same hashcode same mockType" | mockSpec(IfA) | mockSpec(IfA) | ||
| "different hashcode different interfaces" | mockSpec(IfA, IfB) | mockSpec(IfB, IfC) | ||
| "unrelated classes" | mockSpec(IfA) | mockSpec(IfB) | ||
| } | ||
|
|
||
| private Class<?> mockClass(ByteBuddyMockFactory mockFactory, ClassLoader cl, MockFeatures feature) { | ||
| return mockFactory.createMock( | ||
| feature.mockType, | ||
| feature.interfaces, | ||
| null, | ||
| interceptor, | ||
| cl, | ||
| false) | ||
| .getClass() | ||
| } | ||
|
|
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| private static MockSpec mockSpec(String mockedType, String... interfaces) { | ||
| return new MockSpec(mockedType, interfaces as List) | ||
| } | ||
|
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| private void assertValidMockClass(MockFeatures mockFeature, Class<?> mockClass, ClassLoader classLoader) { | ||
| assert mockClass.classLoader == classLoader | ||
| assert mockFeature.mockType.isAssignableFrom(mockClass) | ||
| mockFeature.interfaces.each { | ||
| assert it.isAssignableFrom(mockClass) | ||
| } | ||
| } | ||
|
|
||
| MockFeatures toMockFeatures(MockSpec mockFeaturesString, ByteBuddyTestClassLoader classLoader) { | ||
| def mockType = classLoader.defineInterface(mockFeaturesString.mockType) | ||
| def interfaces = mockFeaturesString.interfaces.collect { classLoader.defineInterface(it) } | ||
| return new MockFeatures(mockType, interfaces) | ||
| } | ||
|
|
||
| /** | ||
| * Class holding the loaded classes to mock. | ||
| */ | ||
| @Canonical | ||
| private static class MockFeatures { | ||
| final Class<?> mockType | ||
| final List<Class<?>> interfaces | ||
| } | ||
|
|
||
| /** | ||
| * Class holding the class names to mock. | ||
| * Which will be converted into a {@link MockFeatures} during test. | ||
| */ | ||
| @Canonical | ||
| private static class MockSpec { | ||
| final String mockType | ||
| final List<String> interfaces | ||
| } | ||
| } |
55 changes: 55 additions & 0 deletions
55
spock-specs/src/test/groovy/org/spockframework/mock/runtime/ByteBuddyTestClassLoader.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,55 @@ | ||
| /* | ||
| * Copyright 2023 the original author or authors. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * https://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
||
| package org.spockframework.mock.runtime; | ||
|
|
||
| import net.bytebuddy.ByteBuddy; | ||
| import net.bytebuddy.description.type.TypeDescription; | ||
| import net.bytebuddy.dynamic.loading.ClassLoadingStrategy; | ||
|
|
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
|
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| final class ByteBuddyTestClassLoader extends ClassLoader { | ||
| private final Map<String, Class<?>> cache = new HashMap<>(); | ||
|
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| private final ClassLoadingStrategy<ByteBuddyTestClassLoader> loadingStrategy = (loader, types) -> { | ||
| Map<TypeDescription, Class<?>> result = new HashMap<>(); | ||
| for (Map.Entry<TypeDescription, byte[]> entry : types.entrySet()) { | ||
| TypeDescription description = entry.getKey(); | ||
| byte[] bytes = entry.getValue(); | ||
| Class<?> clazz = defineClass(description.getName(), bytes, 0, bytes.length); | ||
| result.put(description, clazz); | ||
| } | ||
| return result; | ||
| }; | ||
|
|
||
| /** | ||
| * Defines an empty interface with the passed {@code node}. | ||
| * | ||
| * @param name the name of the interface | ||
| * @return the loaded {@code Class} | ||
| */ | ||
| synchronized Class<?> defineInterface(String name) { | ||
| //noinspection resource | ||
| return cache.computeIfAbsent(name, nameKey -> new ByteBuddy() | ||
| .makeInterface() | ||
| .name(nameKey) | ||
| .make() | ||
| .load(this, loadingStrategy) | ||
| .getLoaded()); | ||
| } | ||
| } |