https://cassandra.apache.org: The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
  • Andres de la Peña
  • Avinash Lakshman
  • Aleksey Yeschenko
  • Aaron Morton
  • Ariel Weisberg
  • Blake Eggleston
  • Benedict Elliott Smith
  • Benjamin Lerer
  • Branimir Lambov
  • Brandon Williams
  • Carl Yeksigian
  • David Brosiusd
  • Dikang Gu
  • Eric Evans
  • Gary Dusbabek
  • Chris Goffinet
  • Alex Petrov
  • Laine Jaakko Olavi
  • T Jake Luciani
  • Jason Brown
  • Jonathan Ellis
  • Jake Farrell
  • Jeff Jirsa
  • Joel Knighton
  • Josh McKenzie
  • Johan Oskarsson
  • Jun Rao
  • Jay Zhuang
  • Sankalp Kohli
  • Marcus Eriksson
  • Michael Semb Wever
  • Mikhail Stepura
  • Michael Shuler
  • Paulo Motta
  • Prashant Malik
  • Robert Stupp
  • Peter Schuller
  • Sam Tunnicliffe
  • Sylvain Lebresne
  • Stefania Alborghetti
  • Tyler Hobbs
  • Vijay Parthasarathy
  • Pavel Yaskevich
  • Yuki Morishita
  • Nate McCall 
public class org.apache.cassandra.metrics.RestorableMeter
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.cassandra.metrics.RestorableMeter
  super_class: java.lang.Object
{
  private static final long TICK_INTERVAL;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final double NANOS_PER_SECOND;
    descriptor: D
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private final org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA m15Rate;
    descriptor: Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA m120Rate;
    descriptor: Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final java.util.concurrent.atomic.AtomicLong count;
    descriptor: Ljava/util/concurrent/atomic/AtomicLong;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final long startTime;
    descriptor: J
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final java.util.concurrent.atomic.AtomicLong lastTick;
    descriptor: Ljava/util/concurrent/atomic/AtomicLong;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final com.codahale.metrics.Clock clock;
    descriptor: Lcom/codahale/metrics/Clock;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 38
            getstatic java.util.concurrent.TimeUnit.SECONDS:Ljava/util/concurrent/TimeUnit;
            ldc 5
            invokevirtual java.util.concurrent.TimeUnit.toNanos:(J)J
            putstatic org.apache.cassandra.metrics.RestorableMeter.TICK_INTERVAL:J
         1: .line 39
            getstatic java.util.concurrent.TimeUnit.SECONDS:Ljava/util/concurrent/TimeUnit;
            lconst_1
            invokevirtual java.util.concurrent.TimeUnit.toNanos:(J)J
            l2d
            putstatic org.apache.cassandra.metrics.RestorableMeter.NANOS_PER_SECOND:D
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=1, args_size=1
        start local 0 // org.apache.cassandra.metrics.RestorableMeter this
         0: .line 52
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 44
            aload 0 /* this */
            new java.util.concurrent.atomic.AtomicLong
            dup
            invokespecial java.util.concurrent.atomic.AtomicLong.<init>:()V
            putfield org.apache.cassandra.metrics.RestorableMeter.count:Ljava/util/concurrent/atomic/AtomicLong;
         2: .line 47
            aload 0 /* this */
            invokestatic com.codahale.metrics.Clock.defaultClock:()Lcom/codahale/metrics/Clock;
            putfield org.apache.cassandra.metrics.RestorableMeter.clock:Lcom/codahale/metrics/Clock;
         3: .line 54
            aload 0 /* this */
            new org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA
            dup
            getstatic java.util.concurrent.TimeUnit.MINUTES:Ljava/util/concurrent/TimeUnit;
            ldc 15
            invokevirtual java.util.concurrent.TimeUnit.toSeconds:(J)J
            invokespecial org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.<init>:(J)V
            putfield org.apache.cassandra.metrics.RestorableMeter.m15Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
         4: .line 55
            aload 0 /* this */
            new org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA
            dup
            getstatic java.util.concurrent.TimeUnit.MINUTES:Ljava/util/concurrent/TimeUnit;
            ldc 120
            invokevirtual java.util.concurrent.TimeUnit.toSeconds:(J)J
            invokespecial org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.<init>:(J)V
            putfield org.apache.cassandra.metrics.RestorableMeter.m120Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
         5: .line 56
            aload 0 /* this */
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.clock:Lcom/codahale/metrics/Clock;
            invokevirtual com.codahale.metrics.Clock.getTick:()J
            putfield org.apache.cassandra.metrics.RestorableMeter.startTime:J
         6: .line 57
            aload 0 /* this */
            new java.util.concurrent.atomic.AtomicLong
            dup
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.startTime:J
            invokespecial java.util.concurrent.atomic.AtomicLong.<init>:(J)V
            putfield org.apache.cassandra.metrics.RestorableMeter.lastTick:Ljava/util/concurrent/atomic/AtomicLong;
         7: .line 58
            return
        end local 0 // org.apache.cassandra.metrics.RestorableMeter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    8     0  this  Lorg/apache/cassandra/metrics/RestorableMeter;

  public void <init>(double, double);
    descriptor: (DD)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=5, args_size=3
        start local 0 // org.apache.cassandra.metrics.RestorableMeter this
        start local 1 // double lastM15Rate
        start local 3 // double lastM120Rate
         0: .line 65
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 44
            aload 0 /* this */
            new java.util.concurrent.atomic.AtomicLong
            dup
            invokespecial java.util.concurrent.atomic.AtomicLong.<init>:()V
            putfield org.apache.cassandra.metrics.RestorableMeter.count:Ljava/util/concurrent/atomic/AtomicLong;
         2: .line 47
            aload 0 /* this */
            invokestatic com.codahale.metrics.Clock.defaultClock:()Lcom/codahale/metrics/Clock;
            putfield org.apache.cassandra.metrics.RestorableMeter.clock:Lcom/codahale/metrics/Clock;
         3: .line 67
            aload 0 /* this */
            new org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA
            dup
            dload 1 /* lastM15Rate */
            getstatic java.util.concurrent.TimeUnit.MINUTES:Ljava/util/concurrent/TimeUnit;
            ldc 15
            invokevirtual java.util.concurrent.TimeUnit.toSeconds:(J)J
            invokespecial org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.<init>:(DJ)V
            putfield org.apache.cassandra.metrics.RestorableMeter.m15Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
         4: .line 68
            aload 0 /* this */
            new org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA
            dup
            dload 3 /* lastM120Rate */
            getstatic java.util.concurrent.TimeUnit.MINUTES:Ljava/util/concurrent/TimeUnit;
            ldc 120
            invokevirtual java.util.concurrent.TimeUnit.toSeconds:(J)J
            invokespecial org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.<init>:(DJ)V
            putfield org.apache.cassandra.metrics.RestorableMeter.m120Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
         5: .line 69
            aload 0 /* this */
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.clock:Lcom/codahale/metrics/Clock;
            invokevirtual com.codahale.metrics.Clock.getTick:()J
            putfield org.apache.cassandra.metrics.RestorableMeter.startTime:J
         6: .line 70
            aload 0 /* this */
            new java.util.concurrent.atomic.AtomicLong
            dup
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.startTime:J
            invokespecial java.util.concurrent.atomic.AtomicLong.<init>:(J)V
            putfield org.apache.cassandra.metrics.RestorableMeter.lastTick:Ljava/util/concurrent/atomic/AtomicLong;
         7: .line 71
            return
        end local 3 // double lastM120Rate
        end local 1 // double lastM15Rate
        end local 0 // org.apache.cassandra.metrics.RestorableMeter this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    8     0          this  Lorg/apache/cassandra/metrics/RestorableMeter;
            0    8     1   lastM15Rate  D
            0    8     3  lastM120Rate  D
    MethodParameters:
              Name  Flags
      lastM15Rate   
      lastM120Rate  

  private void tickIfNecessary();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=6, locals=13, args_size=1
        start local 0 // org.apache.cassandra.metrics.RestorableMeter this
         0: .line 78
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.lastTick:Ljava/util/concurrent/atomic/AtomicLong;
            invokevirtual java.util.concurrent.atomic.AtomicLong.get:()J
            lstore 1 /* oldTick */
        start local 1 // long oldTick
         1: .line 79
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.clock:Lcom/codahale/metrics/Clock;
            invokevirtual com.codahale.metrics.Clock.getTick:()J
            lstore 3 /* newTick */
        start local 3 // long newTick
         2: .line 80
            lload 3 /* newTick */
            lload 1 /* oldTick */
            lsub
            lstore 5 /* age */
        start local 5 // long age
         3: .line 81
            lload 5 /* age */
            getstatic org.apache.cassandra.metrics.RestorableMeter.TICK_INTERVAL:J
            lcmp
            ifle 13
         4: .line 83
            lload 3 /* newTick */
            lload 5 /* age */
            getstatic org.apache.cassandra.metrics.RestorableMeter.TICK_INTERVAL:J
            lrem
            lsub
            lstore 7 /* newIntervalStartTick */
        start local 7 // long newIntervalStartTick
         5: .line 84
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.lastTick:Ljava/util/concurrent/atomic/AtomicLong;
            lload 1 /* oldTick */
            lload 7 /* newIntervalStartTick */
            invokevirtual java.util.concurrent.atomic.AtomicLong.compareAndSet:(JJ)Z
            ifeq 13
         6: .line 86
            lload 5 /* age */
            getstatic org.apache.cassandra.metrics.RestorableMeter.TICK_INTERVAL:J
            ldiv
            lstore 9 /* requiredTicks */
        start local 9 // long requiredTicks
         7: .line 87
            lconst_0
            lstore 11 /* i */
        start local 11 // long i
         8: goto 12
         9: .line 89
      StackMap locals: org.apache.cassandra.metrics.RestorableMeter long long long long long long
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.m15Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
            invokevirtual org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.tick:()V
        10: .line 90
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.m120Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
            invokevirtual org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.tick:()V
        11: .line 87
            lload 11 /* i */
            lconst_1
            ladd
            lstore 11 /* i */
      StackMap locals:
      StackMap stack:
        12: lload 11 /* i */
            lload 9 /* requiredTicks */
            lcmp
            iflt 9
        end local 11 // long i
        end local 9 // long requiredTicks
        end local 7 // long newIntervalStartTick
        13: .line 94
      StackMap locals:
      StackMap stack:
            return
        end local 5 // long age
        end local 3 // long newTick
        end local 1 // long oldTick
        end local 0 // org.apache.cassandra.metrics.RestorableMeter this
      LocalVariableTable:
        Start  End  Slot                  Name  Signature
            0   14     0                  this  Lorg/apache/cassandra/metrics/RestorableMeter;
            1   14     1               oldTick  J
            2   14     3               newTick  J
            3   14     5                   age  J
            5   13     7  newIntervalStartTick  J
            7   13     9         requiredTicks  J
            8   13    11                     i  J

  public void mark();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.apache.cassandra.metrics.RestorableMeter this
         0: .line 101
            aload 0 /* this */
            lconst_1
            invokevirtual org.apache.cassandra.metrics.RestorableMeter.mark:(J)V
         1: .line 102
            return
        end local 0 // org.apache.cassandra.metrics.RestorableMeter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/cassandra/metrics/RestorableMeter;

  public void mark(long);
    descriptor: (J)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // org.apache.cassandra.metrics.RestorableMeter this
        start local 1 // long n
         0: .line 111
            aload 0 /* this */
            invokevirtual org.apache.cassandra.metrics.RestorableMeter.tickIfNecessary:()V
         1: .line 112
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.count:Ljava/util/concurrent/atomic/AtomicLong;
            lload 1 /* n */
            invokevirtual java.util.concurrent.atomic.AtomicLong.addAndGet:(J)J
            pop2
         2: .line 113
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.m15Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
            lload 1 /* n */
            invokevirtual org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.update:(J)V
         3: .line 114
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.m120Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
            lload 1 /* n */
            invokevirtual org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.update:(J)V
         4: .line 115
            return
        end local 1 // long n
        end local 0 // org.apache.cassandra.metrics.RestorableMeter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lorg/apache/cassandra/metrics/RestorableMeter;
            0    5     1     n  J
    MethodParameters:
      Name  Flags
      n     

  public double fifteenMinuteRate();
    descriptor: ()D
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.apache.cassandra.metrics.RestorableMeter this
         0: .line 122
            aload 0 /* this */
            invokevirtual org.apache.cassandra.metrics.RestorableMeter.tickIfNecessary:()V
         1: .line 123
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.m15Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
            invokevirtual org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.rate:()D
            dreturn
        end local 0 // org.apache.cassandra.metrics.RestorableMeter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/cassandra/metrics/RestorableMeter;

  public double twoHourRate();
    descriptor: ()D
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.apache.cassandra.metrics.RestorableMeter this
         0: .line 131
            aload 0 /* this */
            invokevirtual org.apache.cassandra.metrics.RestorableMeter.tickIfNecessary:()V
         1: .line 132
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.m120Rate:Lorg/apache/cassandra/metrics/RestorableMeter$RestorableEWMA;
            invokevirtual org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA.rate:()D
            dreturn
        end local 0 // org.apache.cassandra.metrics.RestorableMeter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/cassandra/metrics/RestorableMeter;

  public long count();
    descriptor: ()J
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.apache.cassandra.metrics.RestorableMeter this
         0: .line 141
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.count:Ljava/util/concurrent/atomic/AtomicLong;
            invokevirtual java.util.concurrent.atomic.AtomicLong.get:()J
            lreturn
        end local 0 // org.apache.cassandra.metrics.RestorableMeter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/cassandra/metrics/RestorableMeter;

  public double meanRate();
    descriptor: ()D
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=1
        start local 0 // org.apache.cassandra.metrics.RestorableMeter this
         0: .line 151
            aload 0 /* this */
            invokevirtual org.apache.cassandra.metrics.RestorableMeter.count:()J
            lconst_0
            lcmp
            ifne 2
         1: .line 153
            dconst_0
            dreturn
         2: .line 155
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.clock:Lcom/codahale/metrics/Clock;
            invokevirtual com.codahale.metrics.Clock.getTick:()J
            aload 0 /* this */
            getfield org.apache.cassandra.metrics.RestorableMeter.startTime:J
            lsub
            lstore 1 /* elapsed */
        start local 1 // long elapsed
         3: .line 156
            aload 0 /* this */
            invokevirtual org.apache.cassandra.metrics.RestorableMeter.count:()J
            l2d
            lload 1 /* elapsed */
            l2d
            ddiv
            getstatic org.apache.cassandra.metrics.RestorableMeter.NANOS_PER_SECOND:D
            dmul
            dreturn
        end local 1 // long elapsed
        end local 0 // org.apache.cassandra.metrics.RestorableMeter this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    4     0     this  Lorg/apache/cassandra/metrics/RestorableMeter;
            3    4     1  elapsed  J
}
SourceFile: "RestorableMeter.java"
NestMembers:
  org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA
InnerClasses:
  RestorableEWMA = org.apache.cassandra.metrics.RestorableMeter$RestorableEWMA of org.apache.cassandra.metrics.RestorableMeter