/*
* Copyright 2012-2017 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
*
* http://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.glowroot.agent.weaving;
import java.util.LinkedHashMap;
import java.util.List;
import javax.annotation.Nullable;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.Lists;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
// "There are some things that agents are allowed to do that simply should not be permitted"
//
// -- http://mail.openjdk.java.net/pipermail/hotspot-dev/2012-March/005464.html
//
// in particular (at least prior to parallel class loading in JDK 7) initializing other classes
// inside of a ClassFileTransformer.transform() method occasionally leads to deadlocks
//
// this is still a problem in JDK 7+, since parallel class loading must be opted in to by custom
// class loaders, see ClassLoader.registerAsParallelCapable()
//
// to avoid initializing other classes inside of the transform() method, all classes referenced from
// WeavingClassFileTransformer are pre-initialized (and all classes referenced from those classes,
// etc)
public class PreInitializeWeavingClasses {
private static final Logger logger = LoggerFactory.getLogger(PreInitializeWeavingClasses.class);
// this is probably not needed, since preInitializeLinkedHashMapKeySetAndKeySetIterator() is
// only called a single time, but just to be safe ...
public static volatile @Nullable Object toPreventDeadCodeElimination;
private PreInitializeWeavingClasses() {}
public static void preInitializeClasses() {
ClassLoader loader = PreInitializeWeavingClasses.class.getClassLoader();
for (String type : usedTypes()) {
initialize(type, loader, true);
}
for (String type : maybeUsedTypes()) {
initialize(type, loader, false);
}
for (String type : javaUsedTypes()) {
// passing warnOnNotExists=false since ThreadLocalRandom only exists in jdk 1.7+
initialize(type, loader, false);
}
preInitializeLinkedHashMapKeySetAndKeySetIterator();
}
private static void initialize(String type, @Nullable ClassLoader loader,
boolean warnOnNotExists) {
try {
Class.forName(type, true, loader);
} catch (ClassNotFoundException e) {
if (warnOnNotExists) {
logger.warn("class not found: {}", type);
}
// log exception at trace level
logger.trace(e.getMessage(), e);
}
}
@VisibleForTesting
static List<String> usedTypes() {
List<String> types = Lists.newArrayList();
types.addAll(getGuavaUsedTypes());
types.add("com.google.protobuf.Internal$EnumLite");
types.add("com.google.protobuf.Internal$EnumLiteMap");
types.add("com.google.protobuf.ProtocolMessageEnum");
types.addAll(getGlowrootUsedTypes());
types.addAll(getAsmUsedTypes());
return types;
}
private static List<String> getGuavaUsedTypes() {
List<String> types = Lists.newArrayList();
types.add("com.google.common.base.Charsets");
types.add("com.google.common.base.ExtraObjectsMethodsForWeb");
types.add("com.google.common.base.Function");
types.add("com.google.common.base.Joiner");
types.add("com.google.common.base.Joiner$1");
types.add("com.google.common.base.Joiner$MapJoiner");
types.add("com.google.common.base.MoreObjects");
types.add("com.google.common.base.MoreObjects$1");
types.add("com.google.common.base.MoreObjects$ToStringHelper");
types.add("com.google.common.base.MoreObjects$ToStringHelper$ValueHolder");
types.add("com.google.common.base.Objects");
types.add("com.google.common.base.PatternCompiler");
types.add("com.google.common.base.Platform");
types.add("com.google.common.base.Platform$1");
types.add("com.google.common.base.Platform$JdkPatternCompiler");
types.add("com.google.common.base.Preconditions");
types.add("com.google.common.base.Predicate");
types.add("com.google.common.base.Predicates");
types.add("com.google.common.base.Predicates$1");
types.add("com.google.common.base.Predicates$IsEqualToPredicate");
types.add("com.google.common.base.Predicates$ObjectPredicate");
types.add("com.google.common.base.Predicates$ObjectPredicate$1");
types.add("com.google.common.base.Predicates$ObjectPredicate$2");
types.add("com.google.common.base.Predicates$ObjectPredicate$3");
types.add("com.google.common.base.Predicates$ObjectPredicate$4");
types.add("com.google.common.base.StandardSystemProperty");
types.add("com.google.common.base.Supplier");
types.add("com.google.common.base.Throwables");
types.add("com.google.common.base.Ticker");
types.add("com.google.common.base.Ticker$1");
types.add("com.google.common.collect.AbstractIndexedListIterator");
types.add("com.google.common.collect.AbstractMapEntry");
types.add("com.google.common.collect.BiMap");
types.add("com.google.common.collect.ByFunctionOrdering");
types.add("com.google.common.collect.CollectPreconditions");
types.add("com.google.common.collect.Collections2");
types.add("com.google.common.collect.ComparatorOrdering");
types.add("com.google.common.collect.DescendingImmutableSortedSet");
types.add("com.google.common.collect.Hashing");
types.add("com.google.common.collect.ImmutableAsList");
types.add("com.google.common.collect.ImmutableBiMap");
types.add("com.google.common.collect.ImmutableCollection");
types.add("com.google.common.collect.ImmutableCollection$ArrayBasedBuilder");
types.add("com.google.common.collect.ImmutableCollection$Builder");
types.add("com.google.common.collect.ImmutableEntry");
types.add("com.google.common.collect.ImmutableEnumMap");
types.add("com.google.common.collect.ImmutableEnumSet");
types.add("com.google.common.collect.ImmutableList");
types.add("com.google.common.collect.ImmutableList$1");
types.add("com.google.common.collect.ImmutableList$Builder");
types.add("com.google.common.collect.ImmutableList$ReverseImmutableList");
types.add("com.google.common.collect.ImmutableList$SubList");
types.add("com.google.common.collect.ImmutableMap");
types.add("com.google.common.collect.ImmutableMap$1");
types.add("com.google.common.collect.ImmutableMap$Builder");
types.add("com.google.common.collect.ImmutableMap$IteratorBasedImmutableMap");
types.add("com.google.common.collect.ImmutableMap$IteratorBasedImmutableMap$1EntrySetImpl");
types.add("com.google.common.collect.ImmutableMapEntry");
types.add("com.google.common.collect.ImmutableMapEntry$NonTerminalImmutableMapEntry");
types.add("com.google.common.collect.ImmutableMapEntrySet");
types.add("com.google.common.collect.ImmutableMapEntrySet$RegularEntrySet");
types.add("com.google.common.collect.ImmutableMapKeySet");
types.add("com.google.common.collect.ImmutableMapValues");
types.add("com.google.common.collect.ImmutableMapValues$1");
types.add("com.google.common.collect.ImmutableMapValues$2");
types.add("com.google.common.collect.ImmutableSet");
types.add("com.google.common.collect.ImmutableSet$Builder");
types.add("com.google.common.collect.ImmutableSet$Indexed");
types.add("com.google.common.collect.ImmutableSet$Indexed$1");
types.add("com.google.common.collect.ImmutableSortedAsList");
types.add("com.google.common.collect.ImmutableSortedMap");
types.add("com.google.common.collect.ImmutableSortedMap$1EntrySet");
types.add("com.google.common.collect.ImmutableSortedMap$1EntrySet$1");
types.add("com.google.common.collect.ImmutableSortedMapFauxverideShim");
types.add("com.google.common.collect.ImmutableSortedSet");
types.add("com.google.common.collect.ImmutableSortedSetFauxverideShim");
types.add("com.google.common.collect.Iterables");
types.add("com.google.common.collect.Iterators");
types.add("com.google.common.collect.Iterators$1");
types.add("com.google.common.collect.Iterators$10");
types.add("com.google.common.collect.Iterators$11");
types.add("com.google.common.collect.Iterators$2");
types.add("com.google.common.collect.Iterators$3");
types.add("com.google.common.collect.Iterators$PeekingImpl");
types.add("com.google.common.collect.Lists");
types.add("com.google.common.collect.Lists$RandomAccessReverseList");
types.add("com.google.common.collect.Lists$ReverseList");
types.add("com.google.common.collect.Lists$ReverseList$1");
types.add("com.google.common.collect.Maps");
types.add("com.google.common.collect.Maps$1");
types.add("com.google.common.collect.Maps$5");
types.add("com.google.common.collect.Maps$6");
types.add("com.google.common.collect.Maps$EntryFunction");
types.add("com.google.common.collect.Maps$EntryFunction$1");
types.add("com.google.common.collect.Maps$EntryFunction$2");
types.add("com.google.common.collect.Multiset");
types.add("com.google.common.collect.NaturalOrdering");
types.add("com.google.common.collect.ObjectArrays");
types.add("com.google.common.collect.Ordering");
types.add("com.google.common.collect.PeekingIterator");
types.add("com.google.common.collect.Platform");
types.add("com.google.common.collect.RegularImmutableAsList");
types.add("com.google.common.collect.RegularImmutableBiMap");
types.add("com.google.common.collect.RegularImmutableBiMap$1");
types.add("com.google.common.collect.RegularImmutableBiMap$Inverse");
types.add("com.google.common.collect.RegularImmutableBiMap$Inverse$InverseEntrySet");
types.add("com.google.common.collect.RegularImmutableBiMap$Inverse$InverseEntrySet$1");
types.add("com.google.common.collect.RegularImmutableList");
types.add("com.google.common.collect.RegularImmutableMap");
types.add("com.google.common.collect.RegularImmutableMap$KeySet");
types.add("com.google.common.collect.RegularImmutableMap$Values");
types.add("com.google.common.collect.RegularImmutableSet");
types.add("com.google.common.collect.RegularImmutableSortedSet");
types.add("com.google.common.collect.ReverseNaturalOrdering");
types.add("com.google.common.collect.ReverseOrdering");
types.add("com.google.common.collect.Sets");
types.add("com.google.common.collect.SingletonImmutableBiMap");
types.add("com.google.common.collect.SingletonImmutableList");
types.add("com.google.common.collect.SingletonImmutableSet");
types.add("com.google.common.collect.SortedIterable");
types.add("com.google.common.collect.SortedIterables");
types.add("com.google.common.collect.SortedLists");
types.add("com.google.common.collect.SortedLists$1");
types.add("com.google.common.collect.SortedLists$KeyAbsentBehavior");
types.add("com.google.common.collect.SortedLists$KeyAbsentBehavior$1");
types.add("com.google.common.collect.SortedLists$KeyAbsentBehavior$2");
types.add("com.google.common.collect.SortedLists$KeyAbsentBehavior$3");
types.add("com.google.common.collect.SortedLists$KeyPresentBehavior");
types.add("com.google.common.collect.SortedLists$KeyPresentBehavior$1");
types.add("com.google.common.collect.SortedLists$KeyPresentBehavior$2");
types.add("com.google.common.collect.SortedLists$KeyPresentBehavior$3");
types.add("com.google.common.collect.SortedLists$KeyPresentBehavior$4");
types.add("com.google.common.collect.SortedLists$KeyPresentBehavior$5");
types.add("com.google.common.collect.TransformedIterator");
types.add("com.google.common.collect.TreeTraverser");
types.add("com.google.common.collect.UnmodifiableIterator");
types.add("com.google.common.collect.UnmodifiableListIterator");
types.add("com.google.common.io.ByteSink");
types.add("com.google.common.io.ByteSource");
types.add("com.google.common.io.ByteStreams");
types.add("com.google.common.io.ByteStreams$1");
types.add("com.google.common.io.Closeables");
types.add("com.google.common.io.Closer");
types.add("com.google.common.io.Closer$LoggingSuppressor");
types.add("com.google.common.io.Closer$SuppressingSuppressor");
types.add("com.google.common.io.Closer$Suppressor");
types.add("com.google.common.io.Files");
types.add("com.google.common.io.Files$1");
types.add("com.google.common.io.Files$2");
types.add("com.google.common.io.Files$FileByteSink");
types.add("com.google.common.io.FileWriteMode");
types.add("com.google.common.io.LineProcessor");
types.add("com.google.common.io.Resources");
types.add("com.google.common.io.Resources$1");
types.add("com.google.common.io.Resources$UrlByteSource");
types.add("com.google.common.primitives.Booleans");
types.add("com.google.common.primitives.Bytes");
types.add("com.google.common.primitives.Ints");
return types;
}
private static List<String> getGlowrootUsedTypes() {
List<String> types = Lists.newArrayList();
types.add("org.glowroot.agent.config.ImmutableInstrumentationConfig");
types.add("org.glowroot.agent.config.ImmutableInstrumentationConfig$Builder");
types.add("org.glowroot.agent.config.ImmutableInstrumentationConfig$InitShim");
types.add("org.glowroot.agent.config.InstrumentationConfig");
types.add("org.glowroot.agent.impl.OptionalThreadContextImpl");
types.add("org.glowroot.agent.impl.NestedTimerMap");
types.add("org.glowroot.agent.impl.ThreadContextImpl");
types.add("org.glowroot.agent.impl.TimerImpl");
types.add("org.glowroot.agent.impl.TransactionRegistry");
types.add("org.glowroot.agent.impl.TransactionRegistry$TransactionRegistryHolder");
types.add("org.glowroot.agent.impl.TransactionServiceImpl");
types.add("org.glowroot.agent.impl.TransactionServiceImpl$TransactionServiceHolder");
types.add("org.glowroot.agent.model.CommonTimerImpl");
types.add("org.glowroot.agent.model.ThreadContextPlus");
types.add("org.glowroot.agent.model.TimerNameImpl");
types.add("org.glowroot.agent.plugin.api.MessageSupplier");
types.add("org.glowroot.agent.plugin.api.MessageSupplier$1");
types.add("org.glowroot.agent.plugin.api.OptionalThreadContext");
types.add("org.glowroot.agent.plugin.api.ThreadContext");
types.add("org.glowroot.agent.plugin.api.Timer");
types.add("org.glowroot.agent.plugin.api.TimerName");
types.add("org.glowroot.agent.plugin.api.config.ConfigListener");
types.add("org.glowroot.agent.plugin.api.util.FastThreadLocal");
types.add("org.glowroot.agent.plugin.api.util.FastThreadLocal$Holder");
types.add("org.glowroot.agent.plugin.api.weaving.BindClassMeta");
types.add("org.glowroot.agent.plugin.api.weaving.BindMethodMeta");
types.add("org.glowroot.agent.plugin.api.weaving.BindMethodName");
types.add("org.glowroot.agent.plugin.api.weaving.BindOptionalReturn");
types.add("org.glowroot.agent.plugin.api.weaving.BindParameter");
types.add("org.glowroot.agent.plugin.api.weaving.BindParameterArray");
types.add("org.glowroot.agent.plugin.api.weaving.BindReceiver");
types.add("org.glowroot.agent.plugin.api.weaving.BindReturn");
types.add("org.glowroot.agent.plugin.api.weaving.BindThrowable");
types.add("org.glowroot.agent.plugin.api.weaving.BindTraveler");
types.add("org.glowroot.agent.plugin.api.weaving.IsEnabled");
types.add("org.glowroot.agent.plugin.api.weaving.MethodModifier");
types.add("org.glowroot.agent.plugin.api.weaving.OnAfter");
types.add("org.glowroot.agent.plugin.api.weaving.OnBefore");
types.add("org.glowroot.agent.plugin.api.weaving.OnReturn");
types.add("org.glowroot.agent.plugin.api.weaving.OnThrow");
types.add("org.glowroot.agent.plugin.api.weaving.Pointcut");
types.add("org.glowroot.agent.plugin.api.weaving.Shim");
types.add("org.glowroot.agent.util.Tickers");
types.add("org.glowroot.agent.util.Tickers$DummyTicker");
types.add("org.glowroot.agent.weaving.Advice");
types.add("org.glowroot.agent.weaving.AdviceGenerator");
types.add("org.glowroot.agent.weaving.Advice$AdviceOrdering");
types.add("org.glowroot.agent.weaving.Advice$AdviceParameter");
types.add("org.glowroot.agent.weaving.Advice$ParameterKind");
types.add("org.glowroot.agent.weaving.AdviceAdapter");
types.add("org.glowroot.agent.weaving.AdviceBuilder");
types.add("org.glowroot.agent.weaving.AdviceBuilder$1");
types.add("org.glowroot.agent.weaving.AdviceBuilder$AdviceConstructionException");
types.add("org.glowroot.agent.weaving.AdviceMatcher");
types.add("org.glowroot.agent.weaving.AnalyzedClass");
types.add("org.glowroot.agent.weaving.AnalyzedMethod");
types.add("org.glowroot.agent.weaving.AnalyzedWorld");
types.add("org.glowroot.agent.weaving.AnalyzedWorld$ParseContext");
types.add("org.glowroot.agent.weaving.BootstrapMetaHolders");
types.add("org.glowroot.agent.weaving.BootstrapMetaHolders$ClassMetaHolder");
types.add("org.glowroot.agent.weaving.BootstrapMetaHolders$MethodMetaHolder");
types.add("org.glowroot.agent.weaving.ClassAnalyzer");
types.add("org.glowroot.agent.weaving.ClassAnalyzer$AnalyzedMethodKey");
types.add("org.glowroot.agent.weaving.ClassAnalyzer$BridgeMethodClassVisitor");
types.add("org.glowroot.agent.weaving.ClassAnalyzer$BridgeMethodClassVisitor"
+ "$BridgeMethodVisitor");
types.add("org.glowroot.agent.weaving.ClassLoaders");
types.add("org.glowroot.agent.weaving.ClassLoaders$LazyDefinedClass");
types.add("org.glowroot.agent.weaving.ClassNames");
types.add("org.glowroot.agent.weaving.Weaver$FelixOsgiHackClassVisitor");
types.add("org.glowroot.agent.weaving.Weaver$FelixOsgiHackMethodVisitor");
types.add("org.glowroot.agent.weaving.Weaver$JBoss4HackClassVisitor");
types.add("org.glowroot.agent.weaving.Weaver$JBoss4HackMethodVisitor");
types.add("org.glowroot.agent.weaving.GeneratedBytecodeUtil");
types.add("org.glowroot.agent.weaving.ImmutableAdvice");
types.add("org.glowroot.agent.weaving.ImmutableAdvice$Builder");
types.add("org.glowroot.agent.weaving.ImmutableAdvice$InitShim");
types.add("org.glowroot.agent.weaving.ImmutableAdviceMatcher");
types.add("org.glowroot.agent.weaving.ImmutableAdviceParameter");
types.add("org.glowroot.agent.weaving.ImmutableAdviceParameter$Builder");
types.add("org.glowroot.agent.weaving.ImmutableAnalyzedClass");
types.add("org.glowroot.agent.weaving.ImmutableAnalyzedClass$Builder");
types.add("org.glowroot.agent.weaving.ImmutableAnalyzedMethod");
types.add("org.glowroot.agent.weaving.ImmutableAnalyzedMethod$Builder");
types.add("org.glowroot.agent.weaving.ImmutableAnalyzedMethodKey");
types.add("org.glowroot.agent.weaving.ImmutableAnalyzedMethodKey$Builder");
types.add("org.glowroot.agent.weaving.ImmutableCatchHandler");
types.add("org.glowroot.agent.weaving.ImmutableLazyDefinedClass");
types.add("org.glowroot.agent.weaving.ImmutableLazyDefinedClass$Builder");
types.add("org.glowroot.agent.weaving.ImmutableMethodMetaGroup");
types.add("org.glowroot.agent.weaving.ImmutableMethodMetaGroup$Builder");
types.add("org.glowroot.agent.weaving.ImmutableParseContext");
types.add("org.glowroot.agent.weaving.ImmutablePublicFinalMethod");
types.add("org.glowroot.agent.weaving.ImmutablePublicFinalMethod$Builder");
types.add("org.glowroot.agent.weaving.ImmutableThinClass");
types.add("org.glowroot.agent.weaving.ImmutableThinClass$Builder");
types.add("org.glowroot.agent.weaving.ImmutableThinMethod");
types.add("org.glowroot.agent.weaving.ImmutableThinMethod$Builder");
types.add("org.glowroot.agent.weaving.InstrumentationSeekerClassVisitor");
types.add("org.glowroot.agent.weaving.InstrumentationSeekerClassVisitor"
+ "$InstrumentationAnnotationMethodVisitor");
types.add("org.glowroot.agent.weaving.InstrumentationSeekerClassVisitor"
+ "$TimerAnnotationVisitor");
types.add("org.glowroot.agent.weaving.InstrumentationSeekerClassVisitor"
+ "$TraceEntryAnnotationVisitor");
types.add("org.glowroot.agent.weaving.InstrumentationSeekerClassVisitor"
+ "$TransactionAnnotationVisitor");
types.add("org.glowroot.agent.weaving.MixinType");
types.add("org.glowroot.agent.weaving.PublicFinalMethod");
types.add("org.glowroot.agent.weaving.ShimType");
types.add("org.glowroot.agent.weaving.ThinClassVisitor");
types.add("org.glowroot.agent.weaving.ThinClassVisitor$AnnotationCaptureMethodVisitor");
types.add("org.glowroot.agent.weaving.ThinClassVisitor$ThinClass");
types.add("org.glowroot.agent.weaving.ThinClassVisitor$ThinMethod");
types.add("org.glowroot.agent.weaving.Weaver");
types.add("org.glowroot.agent.weaving.Weaver$ComputeFramesClassWriter");
types.add("org.glowroot.agent.weaving.Weaver$JSRInlinerClassVisitor");
types.add("org.glowroot.agent.weaving.WeavingClassFileTransformer");
types.add("org.glowroot.agent.weaving.WeavingClassVisitor");
types.add("org.glowroot.agent.weaving.WeavingClassVisitor$InitMixins");
types.add("org.glowroot.agent.weaving.WeavingClassVisitor$MethodMetaGroup");
types.add("org.glowroot.agent.weaving.WeavingMethodVisitor");
types.add("org.glowroot.agent.weaving.WeavingMethodVisitor$CatchHandler");
types.add("org.glowroot.common.util.Patterns");
types.add("org.glowroot.wire.api.model.AgentConfigOuterClass$AgentConfig"
+ "$InstrumentationConfig$CaptureKind");
types.add("org.glowroot.wire.api.model.AgentConfigOuterClass$AgentConfig"
+ "$InstrumentationConfig$CaptureKind$1");
return types;
}
private static List<String> getAsmUsedTypes() {
List<String> types = Lists.newArrayList();
types.add("org.objectweb.asm.AnnotationVisitor");
types.add("org.objectweb.asm.AnnotationWriter");
types.add("org.objectweb.asm.Attribute");
types.add("org.objectweb.asm.ByteVector");
types.add("org.objectweb.asm.ClassReader");
types.add("org.objectweb.asm.ClassVisitor");
types.add("org.objectweb.asm.ClassWriter");
types.add("org.objectweb.asm.Context");
types.add("org.objectweb.asm.CurrentFrame");
types.add("org.objectweb.asm.Edge");
types.add("org.objectweb.asm.FieldVisitor");
types.add("org.objectweb.asm.FieldWriter");
types.add("org.objectweb.asm.Frame");
types.add("org.objectweb.asm.Handle");
types.add("org.objectweb.asm.Handler");
types.add("org.objectweb.asm.Item");
types.add("org.objectweb.asm.Label");
types.add("org.objectweb.asm.MethodVisitor");
types.add("org.objectweb.asm.MethodWriter");
types.add("org.objectweb.asm.Opcodes");
types.add("org.objectweb.asm.Type");
types.add("org.objectweb.asm.TypePath");
types.add("org.objectweb.asm.TypeReference");
types.add("org.objectweb.asm.commons.AdviceAdapter");
types.add("org.objectweb.asm.commons.AnnotationRemapper");
types.add("org.objectweb.asm.commons.GeneratorAdapter");
types.add("org.objectweb.asm.commons.JSRInlinerAdapter");
types.add("org.objectweb.asm.commons.JSRInlinerAdapter$Instantiation");
types.add("org.objectweb.asm.commons.LocalVariablesSorter");
types.add("org.objectweb.asm.commons.Method");
types.add("org.objectweb.asm.commons.MethodRemapper");
types.add("org.objectweb.asm.commons.Remapper");
types.add("org.objectweb.asm.commons.SignatureRemapper");
types.add("org.objectweb.asm.commons.SimpleRemapper");
types.add("org.objectweb.asm.signature.SignatureReader");
types.add("org.objectweb.asm.signature.SignatureVisitor");
types.add("org.objectweb.asm.signature.SignatureWriter");
types.add("org.objectweb.asm.tree.analysis.Analyzer");
types.add("org.objectweb.asm.tree.analysis.AnalyzerException");
types.add("org.objectweb.asm.tree.analysis.BasicInterpreter");
types.add("org.objectweb.asm.tree.analysis.BasicValue");
types.add("org.objectweb.asm.tree.analysis.BasicVerifier");
types.add("org.objectweb.asm.tree.analysis.Frame");
types.add("org.objectweb.asm.tree.analysis.Interpreter");
types.add("org.objectweb.asm.tree.analysis.SimpleVerifier");
types.add("org.objectweb.asm.tree.analysis.Subroutine");
types.add("org.objectweb.asm.tree.analysis.Value");
types.add("org.objectweb.asm.tree.AbstractInsnNode");
types.add("org.objectweb.asm.tree.AnnotationNode");
types.add("org.objectweb.asm.tree.ClassNode");
types.add("org.objectweb.asm.tree.FieldInsnNode");
types.add("org.objectweb.asm.tree.FieldNode");
types.add("org.objectweb.asm.tree.FrameNode");
types.add("org.objectweb.asm.tree.IincInsnNode");
types.add("org.objectweb.asm.tree.InnerClassNode");
types.add("org.objectweb.asm.tree.InsnList");
types.add("org.objectweb.asm.tree.InsnNode");
types.add("org.objectweb.asm.tree.IntInsnNode");
types.add("org.objectweb.asm.tree.InvokeDynamicInsnNode");
types.add("org.objectweb.asm.tree.JumpInsnNode");
types.add("org.objectweb.asm.tree.LabelNode");
types.add("org.objectweb.asm.tree.LdcInsnNode");
types.add("org.objectweb.asm.tree.LineNumberNode");
types.add("org.objectweb.asm.tree.LocalVariableAnnotationNode");
types.add("org.objectweb.asm.tree.LocalVariableNode");
types.add("org.objectweb.asm.tree.LookupSwitchInsnNode");
types.add("org.objectweb.asm.tree.MethodInsnNode");
types.add("org.objectweb.asm.tree.MethodNode");
types.add("org.objectweb.asm.tree.MethodNode$1");
types.add("org.objectweb.asm.tree.MultiANewArrayInsnNode");
types.add("org.objectweb.asm.tree.ParameterNode");
types.add("org.objectweb.asm.tree.TableSwitchInsnNode");
types.add("org.objectweb.asm.tree.TryCatchBlockNode");
types.add("org.objectweb.asm.tree.TypeAnnotationNode");
types.add("org.objectweb.asm.tree.TypeInsnNode");
types.add("org.objectweb.asm.tree.VarInsnNode");
types.add("org.objectweb.asm.util.CheckAnnotationAdapter");
types.add("org.objectweb.asm.util.CheckClassAdapter");
types.add("org.objectweb.asm.util.CheckFieldAdapter");
types.add("org.objectweb.asm.util.CheckMethodAdapter");
types.add("org.objectweb.asm.util.CheckMethodAdapter$1");
types.add("org.objectweb.asm.util.Printer");
types.add("org.objectweb.asm.util.Textifiable");
types.add("org.objectweb.asm.util.Textifier");
types.add("org.objectweb.asm.util.TraceAnnotationVisitor");
types.add("org.objectweb.asm.util.TraceMethodVisitor");
types.add("org.objectweb.asm.util.TraceSignatureVisitor");
return types;
}
@VisibleForTesting
static List<String> maybeUsedTypes() {
List<String> types = Lists.newArrayList();
// these are special classes generated by javac (but not by the eclipse compiler) to handle
// accessing the private constructor in an enclosed type
// (see http://stackoverflow.com/questions/2883181)
types.add("org.glowroot.agent.config.ImmutableInstrumentationConfig$1");
types.add("org.glowroot.agent.model.NestedTimerMap$1");
types.add("org.glowroot.agent.util.Tickers$1");
types.add("org.glowroot.agent.weaving.Advice$1");
types.add("org.glowroot.agent.weaving.AnalyzedClass$1");
types.add("org.glowroot.agent.weaving.AnalyzedMethod$1");
types.add("org.glowroot.agent.weaving.AnalyzedMethodKey$1");
types.add("org.glowroot.agent.weaving.BootstrapMetaHolders$1");
types.add("org.glowroot.agent.weaving.ClassAnalyzer$1");
types.add("org.glowroot.agent.weaving.ClassAnalyzer$BridgeMethodClassVisitor$1");
types.add("org.glowroot.agent.weaving.ImmutableAnalyzedClass$1");
types.add("org.glowroot.agent.weaving.ImmutableAnalyzedMethod$1");
types.add("org.glowroot.agent.weaving.ImmutableAnalyzedMethodKey$1");
types.add("org.glowroot.agent.weaving.ImmutableAdvice$1");
types.add("org.glowroot.agent.weaving.ImmutableAdviceParameter$1");
types.add("org.glowroot.agent.weaving.ImmutableLazyDefinedClass$1");
types.add("org.glowroot.agent.weaving.ImmutableMethodMetaGroup$1");
types.add("org.glowroot.agent.weaving.ImmutablePublicFinalMethod$1");
types.add("org.glowroot.agent.weaving.ImmutableThinClass$1");
types.add("org.glowroot.agent.weaving.ImmutableThinMethod$1");
types.add("org.glowroot.agent.weaving.InstrumentationSeekerClassVisitor$1");
types.add("org.glowroot.agent.weaving.MethodMetaGroup$1");
types.add("org.glowroot.agent.weaving.ThinClassVisitor$1");
types.add("org.glowroot.agent.weaving.Weaver$1");
types.add("org.glowroot.agent.weaving.Weaver$FelixOsgiHackClassVisitor$1");
types.add("org.glowroot.agent.weaving.WeavingClassVisitor$1");
// this is a special class generated by javac (but not by the eclipse compiler) to handle
// enum switch statements
// (see http://stackoverflow.com/questions/1834632/java-enum-and-additional-class-files)
types.add("org.glowroot.agent.weaving.AdviceMatcher$1");
types.add("org.glowroot.agent.weaving.WeavingMethodVisitor$1");
// used when agent is shaded
types.add("org.glowroot.agent.jul.Logger");
types.add("org.glowroot.agent.jul.Level");
return types;
}
// for the most part, adding used java types is not needed and will just slow down startup
// exceptions can be added here
private static List<String> javaUsedTypes() {
List<String> types = Lists.newArrayList();
// pre-initialize ThreadLocalRandom to avoid this error that occurred once during
// integration tests (ClassLoaderLeakTest):
//
// java.lang.ClassCircularityError: sun/nio/ch/Interruptible
//
// java.lang.Class.getDeclaredFields0(Native Method)[na:1.8.0_20]
// java.lang.Class.privateGetDeclaredFields(Class.java:2570)[na:1.8.0_20]
// java.lang.Class.getDeclaredField(Class.java:2055)[na:1.8.0_20]
// java.util.concurrent.ThreadLocalRandom.<clinit>(ThreadLocalRandom.java:1092)~[na:1.8.0_20]
// java.util.concurrent.ConcurrentHashMap.fullAddCount(ConcurrentHashMap.java:2526)~[na:1.8.0_20]
// java.util.concurrent.ConcurrentHashMap.addCount(ConcurrentHashMap.java:2266)~[na:1.8.0_20]
// java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1070)~[na:1.8.0_20]
// java.util.concurrent.ConcurrentHashMap.put(ConcurrentHashMap.java:1006)~[na:1.8.0_20]
// org.glowroot.weaving.AnalyzedWorld.add(AnalyzedWorld.java:156)~[na:0.5-SNAPSHOT]
// org.glowroot.weaving.AnalyzingClassVisitor.visitEndReturningAnalyzedClass(AnalyzingClassVisitor.java:160)~[na:0.5-SNAPSHOT]
// org.glowroot.weaving.WeavingClassVisitor.visitEnd(WeavingClassVisitor.java:229)~[na:0.5-SNAPSHOT]
// org.glowroot.shaded.objectweb.asm.ClassVisitor.visitEnd(Unknown Source)~[na:0.5-SNAPSHOT]
// org.glowroot.shaded.objectweb.asm.ClassReader.accept(Unknown Source)~[na:0.5-SNAPSHOT]
// org.glowroot.shaded.objectweb.asm.ClassReader.accept(Unknown Source)~[na:0.5-SNAPSHOT]
// org.glowroot.weaving.Weaver.weaveInternal(Weaver.java:115)[na:0.5-SNAPSHOT]
// org.glowroot.weaving.Weaver.weave$glowroot$timer$glowroot$weaving$0(Weaver.java:88)[na:0.5-SNAPSHOT]
// org.glowroot.weaving.Weaver.weave(Weaver.java:78)[na:0.5-SNAPSHOT]
// org.glowroot.weaving.WeavingClassFileTransformer.transformInternal(WeavingClassFileTransformer.java:113)[na:0.5-SNAPSHOT]
// org.glowroot.weaving.WeavingClassFileTransformer.transform(WeavingClassFileTransformer.java:76)[na:0.5-SNAPSHOT]
// sun.instrument.TransformerManager.transform(TransformerManager.java:188)[na:1.8.0_20]
// sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:428)[na:1.8.0_20]
// java.lang.Class.getDeclaredFields0(Native Method)[na:1.8.0_20]
// java.lang.Class.privateGetDeclaredFields(Class.java:2570)[na:1.8.0_20]
// java.lang.Class.getDeclaredField(Class.java:2055)[na:1.8.0_20]
// java.util.concurrent.locks.LockSupport.<clinit>(LockSupport.java:404)[na:1.8.0_20]
// java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)[na:1.8.0_20]
// java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1088)[na:1.8.0_20]
// java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)[na:1.8.0_20]
// java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1067)[na:1.8.0_20]
// java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)[na:1.8.0_20]
// java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[na:1.8.0_20]
// java.lang.Thread.run(Thread.java:745)[na:1.8.0_20]
types.add("java.util.concurrent.ThreadLocalRandom");
return types;
}
private static void preInitializeLinkedHashMapKeySetAndKeySetIterator() {
// Resources.toByteArray(), which is used during weaving (see AnalyzedWorld), calls
// java.io.ExpiringCache.get(), which every 300 executions calls
// java.io.ExpiringCache.cleanup() (see stacktrace below)
//
// sometimes this leads to a ClassCircularityError, e.g.
//
// java.lang.ClassCircularityError: java/util/LinkedHashMap$LinkedKeyIterator
// java.util.LinkedHashMap$LinkedKeySet.iterator(LinkedHashMap.java:539)
// java.io.ExpiringCache.cleanup(ExpiringCache.java:119)
// java.io.ExpiringCache.get(ExpiringCache.java:76)
// java.io.UnixFileSystem.canonicalize(UnixFileSystem.java:152)
// java.io.File.getCanonicalPath(File.java:618)
// java.io.FilePermission$1.run(FilePermission.java:215)
// java.io.FilePermission$1.run(FilePermission.java:203)
// java.security.AccessController.doPrivileged(Native Method)
// java.io.FilePermission.init(FilePermission.java:203)
// java.io.FilePermission.<init>(FilePermission.java:277)
// sun.net.www.protocol.file.FileURLConnection.getPermission(FileURLConnection.java:225)
// sun.net.www.protocol.jar.JarFileFactory.getPermission(JarFileFactory.java:156)
// sun.net.www.protocol.jar.JarFileFactory.getCachedJarFile(JarFileFactory.java:126)
// sun.net.www.protocol.jar.JarFileFactory.get(JarFileFactory.java:81)
// sun.net.www.protocol.jar.JarURLConnection.connect(JarURLConnection.java:122)
// sun.net.www.protocol.jar.JarURLConnection.getInputStream(JarURLConnection.java:150)
// java.net.URL.openStream(URL.java:1038)
// com.google.common.io.Resources$UrlByteSource.openStream(Resources.java:72)
// com.google.common.io.ByteSource.read(ByteSource.java:285)
// com.google.common.io.Resources.toByteArray(Resources.java:98)
// org.glowroot.agent.weaving.AnalyzedWorld.createAnalyzedClass(AnalyzedWorld.java:320)
// org.glowroot.agent.weaving.AnalyzedWorld.getOrCreateAnalyzedClass(AnalyzedWorld.java:232)
// org.glowroot.agent.weaving.AnalyzedWorld.getSuperClasses(AnalyzedWorld.java:189)
// org.glowroot.agent.weaving.AnalyzedWorld.getAnalyzedHierarchy(AnalyzedWorld.java:139)
// org.glowroot.agent.weaving.ClassAnalyzer.<init>(ClassAnalyzer.java:108)
// org.glowroot.agent.weaving.Weaver.weaveUnderTimer(Weaver.java:144)
// org.glowroot.agent.weaving.Weaver.weave(Weaver.java:95)
// org.glowroot.agent.weaving.WeavingClassFileTransformer.transformInternal(WeavingClassFileTransformer.java:86)
// org.glowroot.agent.weaving.WeavingClassFileTransformer.transform(WeavingClassFileTransformer.java:65)
// sun.instrument.TransformerManager.transform(TransformerManager.java:188)
// sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:428)
//
// but different Java versions have different private implementation classes for
// LinkedHashMap "key set" and "key set iterator", e.g.
// Java 8 uses java.util.LinkedHashMap$LinkedKeySet and
// java.util.LinkedHashMap$LinkedKeyIterator
// while Java 6 and 7 use java.util.HashMap$KeySet and java.util.LinkedHashMap$KeyIterator
//
// so using this code to load the "occasional" dependencies of java.io.ExpiringCache
// instead of loading them by class name
toPreventDeadCodeElimination = new LinkedHashMap<Object, Object>().keySet().iterator();
}
}