java.lang.Object
- com.tangosol.util.Base
- - com.tangosol.io.nio.AbstractBufferManager
  - - com.tangosol.io.nio.DirectBufferManager

All Implemented Interfaces:

ByteBufferManager
```
@Deprecated
public class DirectBufferManager
extends AbstractBufferManager
```
Deprecated.
use JournalBinaryStore instead

Manages a growable direct ByteBuffer.

Since:

Coherence 2.2

Author:

cp 2002.09.16

See Also:

ByteBuffer

Nested Class Summary
- Nested classes/interfaces inherited from class com.tangosol.util.Base
  Base.LoggingWriter

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`CLEANUP_FINALIZERS`	Deprecated. Use Runtime.runFinalization() to trigger finalization (default).
`static int`	`CLEANUP_GC`	Deprecated. Use Runtime.gc() to trigger finalization.
`static int`	`CLEANUP_NONE`	Deprecated. Do not perform any buffer cleanup.
`protected static boolean`	`MODE_DEBUG`	Deprecated. Set to true to use on-heap storage, false to use off-heap.
`protected static long`	`s_cbUncollected`	Deprecated. Total amount of memory that have not been collected yet.

Fields inherited from class com.tangosol.util.Base
LOG_ALWAYS, LOG_CONFIG, LOG_DEBUG, LOG_ERR, LOG_INFO, LOG_MAX, LOG_MIN, LOG_QUIET, LOG_WARN, POWER_0, POWER_G, POWER_K, POWER_M, POWER_T, UNIT_D, UNIT_H, UNIT_M, UNIT_MS, UNIT_NS, UNIT_S, UNIT_US

Constructor Summary

Constructors
Constructor	Description
`DirectBufferManager(int cbInitial, int cbMaximum)`	Deprecated. Construct a DirectBufferManager that supports a buffer of a certain initial and maximum size.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`protected void`	`allocateBuffer()`	Deprecated. Allocate a new buffer, copying old data if there is any.
`protected void`	`cleanupBuffers()`	Deprecated. Determines if and how to induce the JVM to run finalizers.
`static int`	`getAllocations()`	Deprecated. Return the total number of buffers allocated by the DirectBufferManager.
`static int`	`getCleanupMethod()`	Deprecated. Return the method used for buffers cleanup when the threshold is met.
`static float`	`getCleanupThreshold()`	Deprecated. Return the value used to calculate the size threshold for the uncollected buffers that triggers a cleanup operation.
`static long`	`getTotalAllocationTime()`	Deprecated. Return the total time spent allocating buffers, copying the previous content and cleaning up uncollected buffers.
`protected static void`	`setCleanupMethod(int nCleanupMethod)`	Deprecated. Set the method to be used for buffers cleanup when the threshold is met.
`protected static void`	`setCleanupThreshold(float flCleanupThreshold)`	Deprecated. Determines how often, to run the `cleanupBuffers()` method.

Methods inherited from class com.tangosol.io.nio.AbstractBufferManager
calibrate, getBuffer, getCapacity, getGrowthThreshold, getMaxCapacity, getMaxIncrement, getMinCapacity, getShrinkageThreshold, grow, setBuffer, setCapacity, setGrowthThreshold, setMaxCapacity, setMinCapacity, setShrinkageThreshold, shrink

Methods inherited from class com.tangosol.util.Base
azzert, azzert, azzert, azzertFailed, breakLines, breakLines, capitalize, checkNotEmpty, checkNotNull, checkRange, computeSafeWaitTime, decimalValue, dup, dup, ensureBigDecimal, ensureClassLoader, ensureRuntimeException, ensureRuntimeException, equals, equalsDeep, err, err, err, err, err, escape, formatDateTime, getCallerStackFrame, getCommonMonitor, getCommonMonitor, getCommonMonitor, getContextClassLoader, getContextClassLoader, getDeepMessage, getErr, getLastSafeTimeMillis, getLog, getMaxDecDigits, getMaxHexDigits, getOriginalException, getOut, getProcessRandom, getRandom, getRandomBinary, getRandomBinary, getRandomString, getSafeTimeMillis, getStackFrame, getStackFrames, getStackTrace, getStackTrace, getStackTrace, getThreadFactory, getTimeZone, getUpTimeMillis, hashCode, hexValue, indentString, indentString, isDecimal, isHex, isLogEcho, isOctal, log, log, log, log, log, makeInteger, makeLong, makeThread, mergeArray, mergeBooleanArray, mergeByteArray, mergeCharArray, mergeDoubleArray, mergeFloatArray, mergeIntArray, mergeLongArray, mod, mod, octalValue, out, out, out, out, out, pad, parseBandwidth, parseBandwidth, parseDelimitedString, parseHex, parseHex, parseMemorySize, parseMemorySize, parsePercentage, parseTime, parseTime, parseTimeNanos, parseTimeNanos, printStackTrace, randomize, randomize, randomize, randomize, read, read, read, read, read, read, read, replace, setErr, setLog, setLogEcho, setOut, sleep, toBandwidthString, toBandwidthString, toCharEscape, toCrc, toCrc, toCrc, toCrc, toCrc, toDecString, toDelimitedString, toDelimitedString, toDelimitedString, toDelimitedString, toHex, toHex, toHexDump, toHexEscape, toHexEscape, toHexEscape, toHexEscape, toHexString, toMemorySizeString, toMemorySizeString, toQuotedCharEscape, toQuotedStringEscape, toSqlString, toString, toString, toStringEscape, toUnicodeEscape, trace, trace, trace, trace, trace, trace, trace, trace, trace, truncateString, truncateString, wait

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

- Field Detail
  - CLEANUP_NONE
```
public static final int CLEANUP_NONE
```
    Deprecated.
    
    Do not perform any buffer cleanup.
    
    See Also:
    
    Constant Field Values
  - CLEANUP_FINALIZERS
```
public static final int CLEANUP_FINALIZERS
```
    Deprecated.
    
    Use Runtime.runFinalization() to trigger finalization (default).
    
    See Also:
    
    Constant Field Values
  - CLEANUP_GC
```
public static final int CLEANUP_GC
```
    Deprecated.
    
    Use Runtime.gc() to trigger finalization.
    
    See Also:
    
    Constant Field Values
  - MODE_DEBUG
```
protected static final boolean MODE_DEBUG
```
    Deprecated.
    
    Set to true to use on-heap storage, false to use off-heap.
    
    See Also:
    
    Constant Field Values
  - s_cbUncollected
```
protected static volatile long s_cbUncollected
```
    Deprecated.
    
    Total amount of memory that have not been collected yet.
- Constructor Detail
  - DirectBufferManager
```
public DirectBufferManager(int cbInitial,
                           int cbMaximum)
```
    Deprecated.
    
    Construct a DirectBufferManager that supports a buffer of a certain initial and maximum size.
    
    Parameters:
    
    cbInitial - the initial size
    
    cbMaximum - the maximum size
- Method Detail
  - allocateBuffer
```
protected void allocateBuffer()
```
    Deprecated.
    
    Allocate a new buffer, copying old data if there is any.
    
    Specified by:
    
    allocateBuffer in class AbstractBufferManager
    
    See Also:
    
    ByteBuffer.allocateDirect()
  - cleanupBuffers
```
protected void cleanupBuffers()
```
    Deprecated.
    
    Determines if and how to induce the JVM to run finalizers. This allows to somewhat mitigate a known JDK bug.
    When the amount of uncollected garbage reaches the threshold indicated by the cleanup threshold frequency, induce the GC. In a 64-bit VMs this issue is probably reduced to a minimum.
  - getTotalAllocationTime
```
public static long getTotalAllocationTime()
```
    Deprecated.
    
    Return the total time spent allocating buffers, copying the previous content and cleaning up uncollected buffers.
    
    Returns:
    
    the number of milliseconds spent in allocating, copying and cleaning up uncollected buffers
  - getAllocations
```
public static int getAllocations()
```
    Deprecated.
    
    Return the total number of buffers allocated by the DirectBufferManager.
    
    Returns:
    
    the total number of allocations
  - getCleanupMethod
```
public static int getCleanupMethod()
```
    Deprecated.
    Return the method used for buffers cleanup when the threshold is met.
    The possible return values are:
    
    CLEANUP_FINALIZERS - use Runtime.runFinalization() (default);
    
    CLEANUP_GC - use Runtime.gc();
    
    CLEANUP_NONE - do not perform any cleanup.
    Returns:
    
    one of the CLEANUP_* constants representing the cleanup method
  - setCleanupMethod
```
protected static void setCleanupMethod(int nCleanupMethod)
```
    Deprecated.
    
    Set the method to be used for buffers cleanup when the threshold is met.
    
    Parameters:
    
    nCleanupMethod - a value representing the cleanup method; valid values are the CLEANUP_* constants
    
    Throws:
    
    IllegalArgumentException - if passed value is not a valid CLEANUP_* constant
  - getCleanupThreshold
```
public static float getCleanupThreshold()
```
    Deprecated.
    
    Return the value used to calculate the size threshold for the uncollected buffers that triggers a cleanup operation. Cleanup is performed when the total size of uncollected memory has grown over the product of this value and the maximum Java heap size.
    
    Returns:
    
    a value between 0.0 and 1.0 used to calculate the cleanup frequency
  - setCleanupThreshold
```
protected static void setCleanupThreshold(float flCleanupThreshold)
```
    Deprecated.
    
    Determines how often, to run the cleanupBuffers() method. Cleanup is performed when the uncollected memory has grown over the product of this value and the maximum Java heap size.
    
    Parameters:
    
    flCleanupThreshold - a value between 0.0 and 1.0 used to calculate the cleanup frequency
    
    Throws:
    
    IllegalArgumentException - if the passed value is not valid

Class DirectBufferManager

Nested Class Summary

Nested classes/interfaces inherited from class com.tangosol.util.Base

Field Summary

Fields inherited from class com.tangosol.util.Base

Constructor Summary

Method Summary

Methods inherited from class com.tangosol.io.nio.AbstractBufferManager

Methods inherited from class com.tangosol.util.Base

Methods inherited from class java.lang.Object

Field Detail

CLEANUP_NONE

CLEANUP_FINALIZERS

CLEANUP_GC

MODE_DEBUG

s_cbUncollected

Constructor Detail

DirectBufferManager

Method Detail

allocateBuffer

cleanupBuffers

getTotalAllocationTime

getAllocations

getCleanupMethod

setCleanupMethod

getCleanupThreshold

setCleanupThreshold