https://github.com/spring-projects/spring-framework: Spring Context (Spring IO)
  • Juergen Hoeller 
public class org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver implements org.springframework.instrument.classloading.LoadTimeWeaver
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver
  super_class: java.lang.Object
{
  private static final boolean AGENT_CLASS_PRESENT;
    descriptor: Z
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private final java.lang.ClassLoader classLoader;
    descriptor: Ljava/lang/ClassLoader;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    RuntimeVisibleAnnotations: 
      org.springframework.lang.Nullable()

  private final java.lang.instrument.Instrumentation instrumentation;
    descriptor: Ljava/lang/instrument/Instrumentation;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    RuntimeVisibleAnnotations: 
      org.springframework.lang.Nullable()

  private final java.util.List<java.lang.instrument.ClassFileTransformer> transformers;
    descriptor: Ljava/util/List;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/List<Ljava/lang/instrument/ClassFileTransformer;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 53
            ldc "org.springframework.instrument.InstrumentationSavingAgent"
         1: .line 54
            ldc Lorg/springframework/instrument/classloading/InstrumentationLoadTimeWeaver;
            invokevirtual java.lang.Class.getClassLoader:()Ljava/lang/ClassLoader;
         2: .line 52
            invokestatic org.springframework.util.ClassUtils.isPresent:(Ljava/lang/String;Ljava/lang/ClassLoader;)Z
            putstatic org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.AGENT_CLASS_PRESENT:Z
         3: .line 54
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
         0: .line 70
            aload 0 /* this */
            invokestatic org.springframework.util.ClassUtils.getDefaultClassLoader:()Ljava/lang/ClassLoader;
            invokespecial org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.<init>:(Ljava/lang/ClassLoader;)V
         1: .line 71
            return
        end local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/springframework/instrument/classloading/InstrumentationLoadTimeWeaver;

  public void <init>(java.lang.ClassLoader);
    descriptor: (Ljava/lang/ClassLoader;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
        start local 1 // java.lang.ClassLoader classLoader
         0: .line 77
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 63
            aload 0 /* this */
            new java.util.ArrayList
            dup
            iconst_4
            invokespecial java.util.ArrayList.<init>:(I)V
            putfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.transformers:Ljava/util/List;
         2: .line 78
            aload 0 /* this */
            aload 1 /* classLoader */
            putfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.classLoader:Ljava/lang/ClassLoader;
         3: .line 79
            aload 0 /* this */
            invokestatic org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.getInstrumentation:()Ljava/lang/instrument/Instrumentation;
            putfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.instrumentation:Ljava/lang/instrument/Instrumentation;
         4: .line 80
            return
        end local 1 // java.lang.ClassLoader classLoader
        end local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    5     0         this  Lorg/springframework/instrument/classloading/InstrumentationLoadTimeWeaver;
            0    5     1  classLoader  Ljava/lang/ClassLoader;
    RuntimeVisibleParameterAnnotations: 
      0:
        org.springframework.lang.Nullable()
    MethodParameters:
             Name  Flags
      classLoader  

  public void addTransformer(java.lang.instrument.ClassFileTransformer);
    descriptor: (Ljava/lang/instrument/ClassFileTransformer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=4, args_size=2
        start local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
        start local 1 // java.lang.instrument.ClassFileTransformer transformer
         0: .line 85
            aload 1 /* transformer */
            ldc "Transformer must not be null"
            invokestatic org.springframework.util.Assert.notNull:(Ljava/lang/Object;Ljava/lang/String;)V
         1: .line 87
            new org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$FilteringClassFileTransformer
            dup
            aload 1 /* transformer */
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.classLoader:Ljava/lang/ClassLoader;
            invokespecial org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$FilteringClassFileTransformer.<init>:(Ljava/lang/instrument/ClassFileTransformer;Ljava/lang/ClassLoader;)V
         2: .line 86
            astore 2 /* actualTransformer */
        start local 2 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$FilteringClassFileTransformer actualTransformer
         3: .line 88
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.transformers:Ljava/util/List;
            dup
            astore 3
            monitorenter
         4: .line 89
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.instrumentation:Ljava/lang/instrument/Instrumentation;
            ifnull 5
            iconst_1
            goto 6
      StackMap locals: org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$FilteringClassFileTransformer java.util.List
      StackMap stack:
         5: iconst_0
         6: .line 90
      StackMap locals:
      StackMap stack: int
            ldc "Must start with Java agent to use InstrumentationLoadTimeWeaver. See Spring documentation."
         7: .line 89
            invokestatic org.springframework.util.Assert.state:(ZLjava/lang/String;)V
         8: .line 91
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.instrumentation:Ljava/lang/instrument/Instrumentation;
            aload 2 /* actualTransformer */
            invokeinterface java.lang.instrument.Instrumentation.addTransformer:(Ljava/lang/instrument/ClassFileTransformer;)V
         9: .line 92
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.transformers:Ljava/util/List;
            aload 2 /* actualTransformer */
            invokeinterface java.util.List.add:(Ljava/lang/Object;)Z
            pop
        10: .line 88
            aload 3
            monitorexit
        11: goto 14
      StackMap locals:
      StackMap stack: java.lang.Throwable
        12: aload 3
            monitorexit
        13: athrow
        14: .line 94
      StackMap locals:
      StackMap stack:
            return
        end local 2 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$FilteringClassFileTransformer actualTransformer
        end local 1 // java.lang.instrument.ClassFileTransformer transformer
        end local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
      LocalVariableTable:
        Start  End  Slot               Name  Signature
            0   15     0               this  Lorg/springframework/instrument/classloading/InstrumentationLoadTimeWeaver;
            0   15     1        transformer  Ljava/lang/instrument/ClassFileTransformer;
            3   15     2  actualTransformer  Lorg/springframework/instrument/classloading/InstrumentationLoadTimeWeaver$FilteringClassFileTransformer;
      Exception table:
        from    to  target  type
           4    11      12  any
          12    13      12  any
    MethodParameters:
             Name  Flags
      transformer  

  public java.lang.ClassLoader getInstrumentableClassLoader();
    descriptor: ()Ljava/lang/ClassLoader;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
         0: .line 103
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.classLoader:Ljava/lang/ClassLoader;
            ifnull 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: ldc "No ClassLoader available"
            invokestatic org.springframework.util.Assert.state:(ZLjava/lang/String;)V
         3: .line 104
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.classLoader:Ljava/lang/ClassLoader;
            areturn
        end local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/springframework/instrument/classloading/InstrumentationLoadTimeWeaver;

  public java.lang.ClassLoader getThrowawayClassLoader();
    descriptor: ()Ljava/lang/ClassLoader;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
         0: .line 112
            new org.springframework.instrument.classloading.SimpleThrowawayClassLoader
            dup
            aload 0 /* this */
            invokevirtual org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.getInstrumentableClassLoader:()Ljava/lang/ClassLoader;
            invokespecial org.springframework.instrument.classloading.SimpleThrowawayClassLoader.<init>:(Ljava/lang/ClassLoader;)V
            areturn
        end local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/springframework/instrument/classloading/InstrumentationLoadTimeWeaver;

  public void removeTransformers();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=1
        start local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
         0: .line 119
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.transformers:Ljava/util/List;
            dup
            astore 1
            monitorenter
         1: .line 120
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.instrumentation:Ljava/lang/instrument/Instrumentation;
            ifnull 8
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.transformers:Ljava/util/List;
            invokeinterface java.util.List.isEmpty:()Z
            ifne 8
         2: .line 121
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.transformers:Ljava/util/List;
            invokeinterface java.util.List.size:()I
            iconst_1
            isub
            istore 2 /* i */
        start local 2 // int i
         3: goto 6
         4: .line 122
      StackMap locals: java.util.List int
      StackMap stack:
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.instrumentation:Ljava/lang/instrument/Instrumentation;
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.transformers:Ljava/util/List;
            iload 2 /* i */
            invokeinterface java.util.List.get:(I)Ljava/lang/Object;
            checkcast java.lang.instrument.ClassFileTransformer
            invokeinterface java.lang.instrument.Instrumentation.removeTransformer:(Ljava/lang/instrument/ClassFileTransformer;)Z
            pop
         5: .line 121
            iinc 2 /* i */ -1
      StackMap locals:
      StackMap stack:
         6: iload 2 /* i */
            ifge 4
        end local 2 // int i
         7: .line 124
            aload 0 /* this */
            getfield org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.transformers:Ljava/util/List;
            invokeinterface java.util.List.clear:()V
         8: .line 119
      StackMap locals:
      StackMap stack:
            aload 1
            monitorexit
         9: goto 12
      StackMap locals:
      StackMap stack: java.lang.Throwable
        10: aload 1
            monitorexit
        11: athrow
        12: .line 127
      StackMap locals:
      StackMap stack:
            return
        end local 0 // org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0   13     0  this  Lorg/springframework/instrument/classloading/InstrumentationLoadTimeWeaver;
            3    7     2     i  I
      Exception table:
        from    to  target  type
           1     9      10  any
          10    11      10  any

  public static boolean isInstrumentationAvailable();
    descriptor: ()Z
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 135
            invokestatic org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.getInstrumentation:()Ljava/lang/instrument/Instrumentation;
            ifnull 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private static java.lang.instrument.Instrumentation getInstrumentation();
    descriptor: ()Ljava/lang/instrument/Instrumentation;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 145
            getstatic org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver.AGENT_CLASS_PRESENT:Z
            ifeq 2
         1: .line 146
            invokestatic org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$InstrumentationAccessor.getInstrumentation:()Ljava/lang/instrument/Instrumentation;
            areturn
         2: .line 149
      StackMap locals:
      StackMap stack:
            aconst_null
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    RuntimeVisibleAnnotations: 
      org.springframework.lang.Nullable()
}
SourceFile: "InstrumentationLoadTimeWeaver.java"
NestMembers:
  org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$FilteringClassFileTransformer  org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$InstrumentationAccessor
InnerClasses:
  private FilteringClassFileTransformer = org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$FilteringClassFileTransformer of org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver
  private InstrumentationAccessor = org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver$InstrumentationAccessor of org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver