FsStatistics (TrueZIP Kernel 7.1.3 API)

java.lang.Object
- de.schlichtherle.truezip.fs.FsStatistics

```
@ThreadSafe
public final class FsStatistics
extends Object
```
Provides statistics for the federated file systems managed by a single file system manager.

Author:

Christian Schlichtherle

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`private class`	`FsStatistics.CountingInputStream`
`private class`	`FsStatistics.CountingOutputStream`
`private class`	`FsStatistics.CountingReadOnlyFile`

Field Summary

Fields
Modifier and Type Field and Description

private FsStatisticsManager manager

private long read

private long written

Fields
Modifier and Type	Field and Description
`private FsStatisticsManager`	`manager`
`private long`	`read`
`private long`	`written`

Constructor Summary

Constructors
Constructor and Description

FsStatistics(FsStatisticsManager manager)

Constructors
Constructor and Description
`FsStatistics(FsStatisticsManager manager)`

Method Summary

Methods
Modifier and Type	Method and Description
`(package private) InputStream`	`countBytes(InputStream in)`
`(package private) OutputStream`	`countBytes(OutputStream out)`
`(package private) ReadOnlyFile`	`countBytes(ReadOnlyFile rof)`
`int`	`getFileSystemsTotal()` Returns the total number of managed federated file systems.
`int`	`getFileSystemsTouched()` Returns the number of managed federated file systems which have been touched and need synchronization by calling `FsStatisticsManager.sync(de.schlichtherle.truezip.util.BitField<de.schlichtherle.truezip.fs.FsSyncOption>, de.schlichtherle.truezip.util.ExceptionHandler<? super java.io.IOException, X>)`.
`int`	`getTopLevelFileSystemsTotal()` Returns the total number of managed top level federated file systems.
`int`	`getTopLevelFileSystemsTouched()` Returns the number of managed top level federated file systems which have been touched and need synchronization by calling `FsStatisticsManager.sync(de.schlichtherle.truezip.util.BitField<de.schlichtherle.truezip.fs.FsSyncOption>, de.schlichtherle.truezip.util.ExceptionHandler<? super java.io.IOException, X>)`.
`long`	`getTopLevelRead()` Returns the total number of bytes read from all managed top level federated file systems, i.e. all managed federated file systems which have a parent file system which is not a member of another parent file system.
`long`	`getTopLevelWritten()` Returns the total number of bytes written to all managed top level federated file systems, i.e. all managed federated file systems which have a parent file system which is not a member of another parent file system.
`boolean`	`isClosed()` Returns `true` iff this statistics instance has been closed and should not receive any more updates.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - manager
```
private final FsStatisticsManager manager
```
  - read
```
private volatile long read
```
  - written
```
private volatile long written
```
- Constructor Detail
  - FsStatistics
```
FsStatistics(FsStatisticsManager manager)
```
- Method Detail
  - getFileSystemsTotal
```
public int getFileSystemsTotal()
```
    Returns the total number of managed federated file systems.
  - getFileSystemsTouched
```
public int getFileSystemsTouched()
```
    Returns the number of managed federated file systems which have been touched and need synchronization by calling FsStatisticsManager.sync(de.schlichtherle.truezip.util.BitField<de.schlichtherle.truezip.fs.FsSyncOption>, de.schlichtherle.truezip.util.ExceptionHandler<? super java.io.IOException, X>).
    Note that you should not use the returned value to synchronize conditionally - this is unreliable!
  - getTopLevelFileSystemsTotal
```
public int getTopLevelFileSystemsTotal()
```
    Returns the total number of managed top level federated file systems.
  - getTopLevelFileSystemsTouched
```
public int getTopLevelFileSystemsTouched()
```
    Returns the number of managed top level federated file systems which have been touched and need synchronization by calling FsStatisticsManager.sync(de.schlichtherle.truezip.util.BitField<de.schlichtherle.truezip.fs.FsSyncOption>, de.schlichtherle.truezip.util.ExceptionHandler<? super java.io.IOException, X>).
  - countBytes
```
ReadOnlyFile countBytes(ReadOnlyFile rof)
```
  - countBytes
```
InputStream countBytes(InputStream in)
```
  - getTopLevelRead
```
public long getTopLevelRead()
```
    Returns the total number of bytes read from all managed top level federated file systems, i.e. all managed federated file systems which have a parent file system which is not a member of another parent file system.
    This method is intended to be used to monitor the progress of the method FsStatisticsManager.sync(de.schlichtherle.truezip.util.BitField<de.schlichtherle.truezip.fs.FsSyncOption>, de.schlichtherle.truezip.util.ExceptionHandler<? super java.io.IOException, X>).
  - countBytes
```
OutputStream countBytes(OutputStream out)
```
  - getTopLevelWritten
```
public long getTopLevelWritten()
```
    Returns the total number of bytes written to all managed top level federated file systems, i.e. all managed federated file systems which have a parent file system which is not a member of another parent file system.
    This method is intended to be used to monitor the progress of the method FsStatisticsManager.sync(de.schlichtherle.truezip.util.BitField<de.schlichtherle.truezip.fs.FsSyncOption>, de.schlichtherle.truezip.util.ExceptionHandler<? super java.io.IOException, X>).
  - isClosed
```
public boolean isClosed()
```
    Returns true iff this statistics instance has been closed and should not receive any more updates.
    
    Returns:
    true iff this statistics instance has been closed and should not receive any more updates.

Class FsStatistics

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

manager

read

written

Constructor Detail

FsStatistics

Method Detail

getFileSystemsTotal

getFileSystemsTouched

getTopLevelFileSystemsTotal

getTopLevelFileSystemsTouched

countBytes

countBytes

getTopLevelRead

countBytes

getTopLevelWritten

isClosed