http://metrics.dropwizard.io/metrics-core: Metrics is a Java library which gives you unparalleled insight into what your code does in production. Metrics provides a powerful toolkit of ways to measure the behavior of critical components in your production environment.
  • Coda Hale
  • Ryan Tenney
  • Artem Prigoda 
public class com.codahale.metrics.WeightedSnapshot extends com.codahale.metrics.Snapshot
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.codahale.metrics.WeightedSnapshot
  super_class: com.codahale.metrics.Snapshot
{
  private final long[] values;
    descriptor: [J
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final double[] normWeights;
    descriptor: [D
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final double[] quantiles;
    descriptor: [D
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public void <init>(java.util.Collection<com.codahale.metrics.WeightedSnapshot$WeightedSample>);
    descriptor: (Ljava/util/Collection;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=9, args_size=2
        start local 0 // com.codahale.metrics.WeightedSnapshot this
        start local 1 // java.util.Collection values
         0: .line 39
            aload 0 /* this */
            invokespecial com.codahale.metrics.Snapshot.<init>:()V
         1: .line 40
            aload 1 /* values */
            iconst_0
            anewarray com.codahale.metrics.WeightedSnapshot$WeightedSample
            invokeinterface java.util.Collection.toArray:([Ljava/lang/Object;)[Ljava/lang/Object;
            checkcast com.codahale.metrics.WeightedSnapshot$WeightedSample[]
            astore 2 /* copy */
        start local 2 // com.codahale.metrics.WeightedSnapshot$WeightedSample[] copy
         2: .line 42
            aload 2 /* copy */
            invokedynamic applyAsLong()Ljava/util/function/ToLongFunction;
              Bootstrap: invokestatic java.lang.invoke.LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
                Method arguments:
                  (Ljava/lang/Object;)J
                  com/codahale/metrics/WeightedSnapshot.lambda$0(Lcom/codahale/metrics/WeightedSnapshot$WeightedSample;)J (6)
                  (Lcom/codahale/metrics/WeightedSnapshot$WeightedSample;)J
            invokestatic java.util.Comparator.comparingLong:(Ljava/util/function/ToLongFunction;)Ljava/util/Comparator;
            invokestatic java.util.Arrays.sort:([Ljava/lang/Object;Ljava/util/Comparator;)V
         3: .line 44
            aload 0 /* this */
            aload 2 /* copy */
            arraylength
            newarray 11
            putfield com.codahale.metrics.WeightedSnapshot.values:[J
         4: .line 45
            aload 0 /* this */
            aload 2 /* copy */
            arraylength
            newarray 7
            putfield com.codahale.metrics.WeightedSnapshot.normWeights:[D
         5: .line 46
            aload 0 /* this */
            aload 2 /* copy */
            arraylength
            newarray 7
            putfield com.codahale.metrics.WeightedSnapshot.quantiles:[D
         6: .line 48
            dconst_0
            dstore 3 /* sumWeight */
        start local 3 // double sumWeight
         7: .line 49
            aload 2 /* copy */
            dup
            astore 8
            arraylength
            istore 7
            iconst_0
            istore 6
            goto 11
      StackMap locals: com.codahale.metrics.WeightedSnapshot java.util.Collection com.codahale.metrics.WeightedSnapshot$WeightedSample[] double top int int com.codahale.metrics.WeightedSnapshot$WeightedSample[]
      StackMap stack:
         8: aload 8
            iload 6
            aaload
            astore 5 /* sample */
        start local 5 // com.codahale.metrics.WeightedSnapshot$WeightedSample sample
         9: .line 50
            dload 3 /* sumWeight */
            aload 5 /* sample */
            getfield com.codahale.metrics.WeightedSnapshot$WeightedSample.weight:D
            dadd
            dstore 3 /* sumWeight */
        end local 5 // com.codahale.metrics.WeightedSnapshot$WeightedSample sample
        10: .line 49
            iinc 6 1
      StackMap locals:
      StackMap stack:
        11: iload 6
            iload 7
            if_icmplt 8
        12: .line 53
            iconst_0
            istore 5 /* i */
        start local 5 // int i
        13: goto 19
        14: .line 54
      StackMap locals: com.codahale.metrics.WeightedSnapshot java.util.Collection com.codahale.metrics.WeightedSnapshot$WeightedSample[] double int
      StackMap stack:
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            iload 5 /* i */
            aload 2 /* copy */
            iload 5 /* i */
            aaload
            getfield com.codahale.metrics.WeightedSnapshot$WeightedSample.value:J
            lastore
        15: .line 55
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.normWeights:[D
            iload 5 /* i */
            dload 3 /* sumWeight */
            dconst_0
            dcmpl
            ifeq 16
            aload 2 /* copy */
            iload 5 /* i */
            aaload
            getfield com.codahale.metrics.WeightedSnapshot$WeightedSample.weight:D
            dload 3 /* sumWeight */
            ddiv
            goto 17
      StackMap locals: com.codahale.metrics.WeightedSnapshot java.util.Collection com.codahale.metrics.WeightedSnapshot$WeightedSample[] double int
      StackMap stack: double[] int
        16: dconst_0
      StackMap locals: com.codahale.metrics.WeightedSnapshot java.util.Collection com.codahale.metrics.WeightedSnapshot$WeightedSample[] double int
      StackMap stack: double[] int double
        17: dastore
        18: .line 53
            iinc 5 /* i */ 1
      StackMap locals:
      StackMap stack:
        19: iload 5 /* i */
            aload 2 /* copy */
            arraylength
            if_icmplt 14
        end local 5 // int i
        20: .line 58
            iconst_1
            istore 5 /* i */
        start local 5 // int i
        21: goto 24
        22: .line 59
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.quantiles:[D
            iload 5 /* i */
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.quantiles:[D
            iload 5 /* i */
            iconst_1
            isub
            daload
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.normWeights:[D
            iload 5 /* i */
            iconst_1
            isub
            daload
            dadd
            dastore
        23: .line 58
            iinc 5 /* i */ 1
      StackMap locals:
      StackMap stack:
        24: iload 5 /* i */
            aload 2 /* copy */
            arraylength
            if_icmplt 22
        end local 5 // int i
        25: .line 61
            return
        end local 3 // double sumWeight
        end local 2 // com.codahale.metrics.WeightedSnapshot$WeightedSample[] copy
        end local 1 // java.util.Collection values
        end local 0 // com.codahale.metrics.WeightedSnapshot this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   26     0       this  Lcom/codahale/metrics/WeightedSnapshot;
            0   26     1     values  Ljava/util/Collection<Lcom/codahale/metrics/WeightedSnapshot$WeightedSample;>;
            2   26     2       copy  [Lcom/codahale/metrics/WeightedSnapshot$WeightedSample;
            7   26     3  sumWeight  D
            9   10     5     sample  Lcom/codahale/metrics/WeightedSnapshot$WeightedSample;
           13   20     5          i  I
           21   25     5          i  I
    Signature: (Ljava/util/Collection<Lcom/codahale/metrics/WeightedSnapshot$WeightedSample;>;)V
    MethodParameters:
        Name  Flags
      values  

  public double getValue(double);
    descriptor: (D)D
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=4, args_size=2
        start local 0 // com.codahale.metrics.WeightedSnapshot this
        start local 1 // double quantile
         0: .line 71
            dload 1 /* quantile */
            dconst_0
            dcmpg
            iflt 1
            dload 1 /* quantile */
            dconst_1
            dcmpl
            ifgt 1
            dload 1 /* quantile */
            invokestatic java.lang.Double.isNaN:(D)Z
            ifeq 2
         1: .line 72
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            dload 1 /* quantile */
            invokestatic java.lang.String.valueOf:(D)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " is not in [0..1]"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 75
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            ifne 4
         3: .line 76
            dconst_0
            dreturn
         4: .line 79
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.quantiles:[D
            dload 1 /* quantile */
            invokestatic java.util.Arrays.binarySearch:([DD)I
            istore 3 /* posx */
        start local 3 // int posx
         5: .line 80
            iload 3 /* posx */
            ifge 7
         6: .line 81
            iload 3 /* posx */
            ineg
            iconst_1
            isub
            iconst_1
            isub
            istore 3 /* posx */
         7: .line 83
      StackMap locals: int
      StackMap stack:
            iload 3 /* posx */
            iconst_1
            if_icmpge 9
         8: .line 84
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            iconst_0
            laload
            l2d
            dreturn
         9: .line 87
      StackMap locals:
      StackMap stack:
            iload 3 /* posx */
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            if_icmplt 11
        10: .line 88
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            iconst_1
            isub
            laload
            l2d
            dreturn
        11: .line 91
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            iload 3 /* posx */
            laload
            l2d
            dreturn
        end local 3 // int posx
        end local 1 // double quantile
        end local 0 // com.codahale.metrics.WeightedSnapshot this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   12     0      this  Lcom/codahale/metrics/WeightedSnapshot;
            0   12     1  quantile  D
            5   12     3      posx  I
    MethodParameters:
          Name  Flags
      quantile  

  public int size();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.codahale.metrics.WeightedSnapshot this
         0: .line 101
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            ireturn
        end local 0 // com.codahale.metrics.WeightedSnapshot this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/codahale/metrics/WeightedSnapshot;

  public long[] getValues();
    descriptor: ()[J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.codahale.metrics.WeightedSnapshot this
         0: .line 111
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            invokestatic java.util.Arrays.copyOf:([JI)[J
            areturn
        end local 0 // com.codahale.metrics.WeightedSnapshot this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/codahale/metrics/WeightedSnapshot;

  public long getMax();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // com.codahale.metrics.WeightedSnapshot this
         0: .line 121
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            ifne 2
         1: .line 122
            lconst_0
            lreturn
         2: .line 124
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            iconst_1
            isub
            laload
            lreturn
        end local 0 // com.codahale.metrics.WeightedSnapshot this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/codahale/metrics/WeightedSnapshot;

  public long getMin();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.codahale.metrics.WeightedSnapshot this
         0: .line 134
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            ifne 2
         1: .line 135
            lconst_0
            lreturn
         2: .line 137
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            iconst_0
            laload
            lreturn
        end local 0 // com.codahale.metrics.WeightedSnapshot this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lcom/codahale/metrics/WeightedSnapshot;

  public double getMean();
    descriptor: ()D
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=4, args_size=1
        start local 0 // com.codahale.metrics.WeightedSnapshot this
         0: .line 147
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            ifne 2
         1: .line 148
            dconst_0
            dreturn
         2: .line 151
      StackMap locals:
      StackMap stack:
            dconst_0
            dstore 1 /* sum */
        start local 1 // double sum
         3: .line 152
            iconst_0
            istore 3 /* i */
        start local 3 // int i
         4: goto 7
         5: .line 153
      StackMap locals: double int
      StackMap stack:
            dload 1 /* sum */
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            iload 3 /* i */
            laload
            l2d
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.normWeights:[D
            iload 3 /* i */
            daload
            dmul
            dadd
            dstore 1 /* sum */
         6: .line 152
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
         7: iload 3 /* i */
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            if_icmplt 5
        end local 3 // int i
         8: .line 155
            dload 1 /* sum */
            dreturn
        end local 1 // double sum
        end local 0 // com.codahale.metrics.WeightedSnapshot this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    9     0  this  Lcom/codahale/metrics/WeightedSnapshot;
            3    9     1   sum  D
            4    8     3     i  I

  public double getStdDev();
    descriptor: ()D
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=8, args_size=1
        start local 0 // com.codahale.metrics.WeightedSnapshot this
         0: .line 167
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            iconst_1
            if_icmpgt 2
         1: .line 168
            dconst_0
            dreturn
         2: .line 171
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            invokevirtual com.codahale.metrics.WeightedSnapshot.getMean:()D
            dstore 1 /* mean */
        start local 1 // double mean
         3: .line 172
            dconst_0
            dstore 3 /* variance */
        start local 3 // double variance
         4: .line 174
            iconst_0
            istore 5 /* i */
        start local 5 // int i
         5: goto 9
         6: .line 175
      StackMap locals: double double int
      StackMap stack:
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            iload 5 /* i */
            laload
            l2d
            dload 1 /* mean */
            dsub
            dstore 6 /* diff */
        start local 6 // double diff
         7: .line 176
            dload 3 /* variance */
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.normWeights:[D
            iload 5 /* i */
            daload
            dload 6 /* diff */
            dmul
            dload 6 /* diff */
            dmul
            dadd
            dstore 3 /* variance */
        end local 6 // double diff
         8: .line 174
            iinc 5 /* i */ 1
      StackMap locals:
      StackMap stack:
         9: iload 5 /* i */
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            arraylength
            if_icmplt 6
        end local 5 // int i
        10: .line 179
            dload 3 /* variance */
            invokestatic java.lang.Math.sqrt:(D)D
            dreturn
        end local 3 // double variance
        end local 1 // double mean
        end local 0 // com.codahale.metrics.WeightedSnapshot this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   11     0      this  Lcom/codahale/metrics/WeightedSnapshot;
            3   11     1      mean  D
            4   11     3  variance  D
            5   10     5         i  I
            7    8     6      diff  D

  public void dump(java.io.OutputStream);
    descriptor: (Ljava/io/OutputStream;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=10, args_size=2
        start local 0 // com.codahale.metrics.WeightedSnapshot this
        start local 1 // java.io.OutputStream output
         0: .line 189
            aconst_null
            astore 2
            aconst_null
            astore 3
         1: new java.io.PrintWriter
            dup
            new java.io.OutputStreamWriter
            dup
            aload 1 /* output */
            getstatic java.nio.charset.StandardCharsets.UTF_8:Ljava/nio/charset/Charset;
            invokespecial java.io.OutputStreamWriter.<init>:(Ljava/io/OutputStream;Ljava/nio/charset/Charset;)V
            invokespecial java.io.PrintWriter.<init>:(Ljava/io/Writer;)V
            astore 4 /* out */
        start local 4 // java.io.PrintWriter out
         2: .line 190
            aload 0 /* this */
            getfield com.codahale.metrics.WeightedSnapshot.values:[J
            dup
            astore 9
            arraylength
            istore 8
            iconst_0
            istore 7
            goto 6
      StackMap locals: com.codahale.metrics.WeightedSnapshot java.io.OutputStream java.lang.Throwable java.lang.Throwable java.io.PrintWriter top top int int long[]
      StackMap stack:
         3: aload 9
            iload 7
            laload
            lstore 5 /* value */
        start local 5 // long value
         4: .line 191
            aload 4 /* out */
            ldc "%d%n"
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
            lload 5 /* value */
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            aastore
            invokevirtual java.io.PrintWriter.printf:(Ljava/lang/String;[Ljava/lang/Object;)Ljava/io/PrintWriter;
            pop
        end local 5 // long value
         5: .line 190
            iinc 7 1
      StackMap locals:
      StackMap stack:
         6: iload 7
            iload 8
            if_icmplt 3
         7: .line 193
            aload 4 /* out */
            ifnull 13
            aload 4 /* out */
            invokevirtual java.io.PrintWriter.close:()V
            goto 13
      StackMap locals: com.codahale.metrics.WeightedSnapshot java.io.OutputStream java.lang.Throwable java.lang.Throwable java.io.PrintWriter
      StackMap stack: java.lang.Throwable
         8: astore 2
            aload 4 /* out */
            ifnull 9
            aload 4 /* out */
            invokevirtual java.io.PrintWriter.close:()V
        end local 4 // java.io.PrintWriter out
      StackMap locals:
      StackMap stack:
         9: aload 2
            athrow
      StackMap locals:
      StackMap stack: java.lang.Throwable
        10: astore 3
            aload 2
            ifnonnull 11
            aload 3
            astore 2
            goto 12
      StackMap locals:
      StackMap stack:
        11: aload 2
            aload 3
            if_acmpeq 12
            aload 2
            aload 3
            invokevirtual java.lang.Throwable.addSuppressed:(Ljava/lang/Throwable;)V
      StackMap locals:
      StackMap stack:
        12: aload 2
            athrow
        13: .line 194
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.io.OutputStream output
        end local 0 // com.codahale.metrics.WeightedSnapshot this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   14     0    this  Lcom/codahale/metrics/WeightedSnapshot;
            0   14     1  output  Ljava/io/OutputStream;
            2    9     4     out  Ljava/io/PrintWriter;
            4    5     5   value  J
      Exception table:
        from    to  target  type
           2     7       8  any
           1    10      10  any
    MethodParameters:
        Name  Flags
      output  

  private static long lambda$0(com.codahale.metrics.WeightedSnapshot$WeightedSample);
    descriptor: (Lcom/codahale/metrics/WeightedSnapshot$WeightedSample;)J
    flags: (0x100a) ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // com.codahale.metrics.WeightedSnapshot$WeightedSample w
         0: .line 42
            aload 0 /* w */
            getfield com.codahale.metrics.WeightedSnapshot$WeightedSample.value:J
            lreturn
        end local 0 // com.codahale.metrics.WeightedSnapshot$WeightedSample w
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0     w  Lcom/codahale/metrics/WeightedSnapshot$WeightedSample;
}
SourceFile: "WeightedSnapshot.java"
NestMembers:
  com.codahale.metrics.WeightedSnapshot$WeightedSample
InnerClasses:
  public WeightedSample = com.codahale.metrics.WeightedSnapshot$WeightedSample of com.codahale.metrics.WeightedSnapshot
  public final Lookup = java.lang.invoke.MethodHandles$Lookup of java.lang.invoke.MethodHandles