UtlConstants (Rumi 4.0.595 API)

java.lang.Object
- com.neeve.util.UtlConstants

```
public class UtlConstants
extends Object
```
Defines configuration properties and constants for the 'com.neeve.util' package.
This class IS supported for use by end users.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`BYTE_SIZE_IN_BYTES` The size of a `Byte` in bytes
`static int`	`CHAR_SIZE_IN_BYTES` The size of a `Character` in bytes
`static int`	`DOUBLE_SIZE_IN_BYTES` The size of a `Double` in bytes
`static boolean`	`FILE_USENATIVE_DEFAULT` The default value for `FILE_USENATIVE_PROPNAME` ("nv.file.usenative"): true.
`static String`	`FILE_USENATIVE_PROPNAME` Property that controls whether file io uses Rumi native libraries (if available).
`static int`	`FLOAT_SIZE_IN_BYTES` The size of a `Float` in bytes
`static int`	`INT_SIZE_IN_BYTES` The size of a `Integer` in bytes
`static int`	`LONG_SIZE_IN_BYTES` The size of a `Long` in bytes
`static String`	`POOL_DETACHEDWASH_CPUAFFINITIYMASK_PROPNAME` Property that controls the cpu affinitiy mask of the detached pool washer when enabled.
`static boolean`	`POOL_DETACHEDWASH_DEFAULT` The default value for `POOL_DETACHEDWASH_PROPNAME` ("nv.pool.detachedwash"): false.
`static String`	`POOL_DETACHEDWASH_PROPNAME` Property that controls whether objects returned to a pool a washed in a detached thread.
`static int`	`POOL_DETACHEDWASH_QUEUEDEPTH_DEFAULT` The default value for `POOL_DETACHEDWASH_QUEUEDEPTH_PROPNAME` ("nv.pool.detachedwash.queueDepth"): 1024.
`static String`	`POOL_DETACHEDWASH_QUEUEDEPTH_PROPNAME` Property that controls the queue depth of the detached pool washer when enabled.
`static String`	`POOL_DETACHEDWASH_WAITSTRATEGY_DEFAULT` The default value for `POOL_DETACHEDWASH_WAITSTRATEGY_PROPNAME` ("nv.pool.detachedwash.waitstrategy"): "Blocking".
`static String`	`POOL_DETACHEDWASH_WAITSTRATEGY_PROPNAME` Property that controls the wait strategy for the detached pool washer thread when enabled.
`static boolean`	`POOL_LEAKTRACKING_ENABLED_DEFAULT` The default value for `POOL_LEAKTRACKING_ENABLED_PROPNAME` ("nv.tuning.memory.pool.leaktracking.enabled"): false.
`static String`	`POOL_LEAKTRACKING_ENABLED_PROPNAME` Property that controls whether pool leak tracking is enabled.
`static String`	`POOL_LEAKTRACKING_ENABLED_TYPES_DEFAULT` The default value for `POOL_LEAKTRACKING_ENABLED_PROPNAME` ("nv.tuning.memory.pool.leaktracking.enabled"): false (none).
`static String`	`POOL_LEAKTRACKING_ENABLED_TYPES_PROPNAME` Property that can be used to selective enable pool leak tracking for specific types.
`static int`	`POOL_LEAKTRACKING_HISTORYSIZE_DEFAULT` The default value for `POOL_LEAKTRACKING_HISTORYSIZE_PROPNAME` ("nv.tuning.memory.pool.leaktracking.historySize"): 100.
`static String`	`POOL_LEAKTRACKING_HISTORYSIZE_PROPNAME` Property that controls the number of pool misses that are retained for diagnosing pool leaks.
`static int`	`POOL_LEAKTRACKING_TRIGGER_THRESHOLD_DEFAULT` The default value for `POOL_LEAKTRACKING_HISTORYSIZE_PROPNAME` ("nv.tuning.memory.pool.leaktracking.triggerThreshold"): 100000.
`static String`	`POOL_LEAKTRACKING_TRIGGER_THRESHOLD_PROPNAME` Property that controls the trigger threshold on which to dump pool leaks.
`static String`	`POOL_LOCKINGSTRATEGY_DEFAULT` The default value for `POOL_LOCKINGSTRATEGY_PROPNAME` ("nv.tuning.performance.pool.lockingstrategy"): "Mutex".
`static String`	`POOL_LOCKINGSTRATEGY_PROPNAME` Property that controls the locking strategy to use for threaded pools.
`static boolean`	`POOL_OVERRIDE_PARAMS_FROM_ENV_DEFAULT` The default value for `POOL_OVERRIDE_PARAMS_FROM_ENV_PROPNAME` ("nv.tuning.memory.pool.overrideparamsfromenv"): false.
`static String`	`POOL_OVERRIDE_PARAMS_FROM_ENV_PROPNAME` Property that controls whether pool parameters can be overridden from the environment.
`static boolean`	`POOL_SHOULD_POOL_DEFAULT` The default value for `POOL_SHOULD_POOL_PROPNAME` ("nv.tuning.memory.pool.shouldpool"): true.
`static String`	`POOL_SHOULD_POOL_PROPNAME` Property that controls whether pool is enabled.
`static boolean`	`POOL_SOURCE_PARAMS_FROM_ENV_DEFAULT` The default value for `POOL_SOURCE_PARAMS_FROM_ENV_PROPNAME` ("nv.tuning.memory.pool.sourceparamsfromenv"): true.
`static String`	`POOL_SOURCE_PARAMS_FROM_ENV_PROPNAME` Property that controls whether pool parameters can be sourced from the environment.
`static boolean`	`REFTRACKING_ENABLED_DEFAULT` The default value for `REFTRACKING_ENABLED_PROPNAME` ("nv.reftracking.enabled"): false.
`static String`	`REFTRACKING_ENABLED_PROPNAME` Globally enables reference tracking for pooled objects.
`static int`	`REFTRACKING_HISTORYSIZE_DEFAULT` The default value for `REFTRACKING_HISTORYSIZE_PROPNAME` ("nv.reftracking.historysize"): 5 (none).
`static String`	`REFTRACKING_HISTORYSIZE_PROPNAME` Property that controls the history size to maintain for reference tracked pool items.
`static String`	`REFTRACKING_TYPES_DEFAULT` The default value for `REFTRACKING_TYPES_PROPNAME` ("nv.reftracking.types"): null (none).
`static String`	`REFTRACKING_TYPES_PROPNAME` Enables reference tracking for specific types of pooled elements Enabling reference tracking captures and stores stack traces on acquire and dispose of pooled objects.
`static int`	`SHORT_SIZE_IN_BYTES` The size of a `Short` in bytes
`static String`	`THREAD_DEFAULTCPUAFFINITYMASK_DEFAULT` The default value for `THREAD_DEFAULTCPUAFFINITYMASK_PROPNAME` ("nv.tuning.cpu.defaultaffinitymask"): "0".
`static String`	`THREAD_DEFAULTCPUAFFINITYMASK_PROPNAME` Property that controls the default affinity mask set by `UtlThread.setDefaultCPUAffinityMask()`.
`static boolean`	`THREAD_ENABLECPUAFFINITYMASKS_DEFAULT` The default value for `THREAD_ENABLECPUAFFINITYMASKS_PROPNAME` ("nv.tuning.cpu.enableaffinitymasks"): false.
`static String`	`THREAD_ENABLECPUAFFINITYMASKS_PROPNAME` Property that controls whether or not thread cpu affinitization is enabled.
`static String`	`THREAD_WAIT_STATS_ENABLE` Property that controls whether or not thread spin loop stats are enabled.
`static boolean`	`THREAD_WAIT_STATS_ENABLE_DEFAULT` The default value for `THREAD_WAIT_STATS_ENABLE` ("nv.threadwaitstatsenabled"): true.
`static String`	`TIME_FORMAT_DEFAULT` The default value for `TIME_FORMAT_PROPNAME` ("nv.time.format"): "yyyyMMdd-HH:mm:ss.SSS".
`static String`	`TIME_FORMAT_PROPNAME` Property that controls default format for timestamps.
`static String`	`TIME_TIMEZONEFORMAT_DEFAULT` The default value for `TIME_TIMEZONEFORMAT_PROPNAME` ("nv.time.timezoneformat"): "GMT".
`static String`	`TIME_TIMEZONEFORMAT_PROPNAME` Property that controls default timezone used for formatting timestamps.
`static boolean`	`TIME_USENATIVE_DEFAULT` The default value for `TIME_USENATIVE_PROPNAME` ("nv.time.usenative"): false.
`static String`	`TIME_USENATIVE_PROPNAME` Property that controls whether `UtlTime.now()` uses native libraries to obtain current time.

Constructor Summary

Constructors
Constructor and Description

UtlConstants()

Constructors
Constructor and Description
`UtlConstants()`

Method Summary
- Methods inherited from class java.lang.Object
  equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - TIME_USENATIVE_PROPNAME
```
public static final String TIME_USENATIVE_PROPNAME
```
    Property that controls whether UtlTime.now() uses native libraries to obtain current time.
    Property Name: "nv.time.usenative"
    Default value: false
    
    See Also:
    
    Constant Field Values
  - TIME_USENATIVE_DEFAULT
```
public static final boolean TIME_USENATIVE_DEFAULT
```
    The default value for TIME_USENATIVE_PROPNAME ("nv.time.usenative"): false.
    
    See Also:
    
    Constant Field Values
  - TIME_FORMAT_PROPNAME
```
public static final String TIME_FORMAT_PROPNAME
```
    Property that controls default format for timestamps.
    Controls the default output format of timestamps formatted via UtlTime.format(Date). This format will be used until UtlTime.setTimestampFormat(String) changes it.
    The value supplied must be a format that can be parsed by the SimpleDateFormat(String) constructor.
    Property Name: "nv.time.format"
    Default value: "yyyyMMdd-HH:mm:ss.SSS"
    
    See Also:
    
    Constant Field Values
  - TIME_FORMAT_DEFAULT
```
public static final String TIME_FORMAT_DEFAULT
```
    The default value for TIME_FORMAT_PROPNAME ("nv.time.format"): "yyyyMMdd-HH:mm:ss.SSS".
    
    See Also:
    
    Constant Field Values
  - TIME_TIMEZONEFORMAT_PROPNAME
```
public static final String TIME_TIMEZONEFORMAT_PROPNAME
```
    Property that controls default timezone used for formatting timestamps.
    Controls the default format of timezones formatted via UtlTime.format(Date). This format will be used until UtlTime.setTimestampFormatTimeZone(String) or UtlTime.setTimestampFormatTimeZone(TimeZone) changes it.
    The value supplied must be a format that can be parsed by the DateFormat.setTimeZone(TimeZone).
    Property Name: "nv.time.timezoneformat"
    Default value: "GMT"
    
    See Also:
    
    Constant Field Values
  - TIME_TIMEZONEFORMAT_DEFAULT
```
public static final String TIME_TIMEZONEFORMAT_DEFAULT
```
    The default value for TIME_TIMEZONEFORMAT_PROPNAME ("nv.time.timezoneformat"): "GMT".
    
    See Also:
    
    Constant Field Values
  - FILE_USENATIVE_PROPNAME
```
public static final String FILE_USENATIVE_PROPNAME
```
    Property that controls whether file io uses Rumi native libraries (if available).
    Property Name: "nv.file.usenative"
    Default value: true
    
    See Also:
    
    Constant Field Values
  - FILE_USENATIVE_DEFAULT
```
public static final boolean FILE_USENATIVE_DEFAULT
```
    The default value for FILE_USENATIVE_PROPNAME ("nv.file.usenative"): true.
    
    See Also:
    
    Constant Field Values
  - POOL_SHOULD_POOL_PROPNAME
```
public static final String POOL_SHOULD_POOL_PROPNAME
```
    Property that controls whether pool is enabled.
    This property can be used to globally enable or disable pools. Globally disabling pools is not usually recommended as it can have adverse consequences on memory management in the platform. This property is mainly provided for troubleshooting purposes.
    Property Name: "nv.tuning.memory.pool.shouldpool"
    Default value: true
    
    See Also:
    
    Constant Field Values
  - POOL_SHOULD_POOL_DEFAULT
```
public static final boolean POOL_SHOULD_POOL_DEFAULT
```
    The default value for POOL_SHOULD_POOL_PROPNAME ("nv.tuning.memory.pool.shouldpool"): true.
    
    See Also:
    
    Constant Field Values
  - POOL_LOCKINGSTRATEGY_PROPNAME
```
public static final String POOL_LOCKINGSTRATEGY_PROPNAME
```
    Property that controls the locking strategy to use for threaded pools.
    The value provided must be one of UtlPool.LockingStrategy, case sensitive.
    Property Name: "nv.tuning.performance.pool.lockingstrategy"
    Default value: "Mutex"
    
    See Also:
    
    Constant Field Values
  - POOL_LOCKINGSTRATEGY_DEFAULT
```
public static final String POOL_LOCKINGSTRATEGY_DEFAULT
```
    The default value for POOL_LOCKINGSTRATEGY_PROPNAME ("nv.tuning.performance.pool.lockingstrategy"): "Mutex".
    
    See Also:
    
    Constant Field Values
  - POOL_LEAKTRACKING_ENABLED_PROPNAME
```
public static final String POOL_LEAKTRACKING_ENABLED_PROPNAME
```
    Property that controls whether pool leak tracking is enabled.
    Pool leak tracking can be enabled as a diagnostic measure that records stack traces as items are taken and returned to a pool. When enabled and a given number of pool misses occur that cause a new item to be allocated, a history of recent items taken from the pool is dumped which can be used to determine what points in the code is causing the allocations.
    Most often it is helpful to additionally enable reference tracking on the object. When reference tracking is enabled for an item that is leaking from a pool, the reference history for the item is displayed along with the pool leak history. This allows one to see what caused item historically take from the pool not to be disposed and returned to the pool.
    Related Properties
    - POOL_LEAKTRACKING_ENABLED_TYPES_PROPNAME - can be used to enable pool leak tracking on a type by type basis (to reduce overhead)
    - POOL_LEAKTRACKING_HISTORYSIZE_DEFAULT - can be used to control the size of the history maintained when a dump is triggered.
    - POOL_LEAKTRACKING_TRIGGER_THRESHOLD_PROPNAME - can be used to control the threshold of misses on which to trigger a dump.
    WARNING: Pool leak tracking has very high overhead. It is intended only for use in a diagnostic scenarios and should never be enabled for production. The overhead of enabling pool leak tracking can be mitigated by using POOL_LEAKTRACKING_ENABLED_TYPES_PROPNAME, but it may also be necessary to reduce the throughput of the application to collect meaningful results
    This property must be set as a system property on the jvm command line
    Property Name: "nv.tuning.memory.pool.leaktracking.enabled"
    Default value: false
    See Also:
    
    Constant Field Values
  - POOL_LEAKTRACKING_ENABLED_DEFAULT
```
public static final boolean POOL_LEAKTRACKING_ENABLED_DEFAULT
```
    The default value for POOL_LEAKTRACKING_ENABLED_PROPNAME ("nv.tuning.memory.pool.leaktracking.enabled"): false.
    
    See Also:
    
    Constant Field Values
  - POOL_LEAKTRACKING_ENABLED_TYPES_PROPNAME
```
public static final String POOL_LEAKTRACKING_ENABLED_TYPES_PROPNAME
```
    Property that can be used to selective enable pool leak tracking for specific types.
    While POOL_LEAKTRACKING_ENABLED_PROPNAME enables pool leak tracking for all pools, this property configures pool leak tracking for a specific types.
    Usage
    -Dnv.pool.leaktracking.types=fullyQualifiedClass1|fullyQualifiedClassN
    Specifying:
```
-Dnv.pool.leaktracking.types=*
```
    enables pool leak tracking for all types.
    Related Properties
    - POOL_LEAKTRACKING_ENABLED_TYPES_PROPNAME - can be used to enable pool leak tracking on a type by type basis (to reduce overhead)
    - POOL_LEAKTRACKING_HISTORYSIZE_DEFAULT - can be used to control the size of the history maintained when a dump is triggered.
    - POOL_LEAKTRACKING_TRIGGER_THRESHOLD_PROPNAME - can be used to control the threshold of misses on which to trigger a dump.
    WARNING: Pool leak tracking has very high overhead. It is intended only for use in a diagnostic scenarios and should never be enabled for production. It may also be necessary to reduce the throughput of the application to collect meaningful results.
    This property must be set as a system property on the jvm command line
    Property Name: "nv.tuning.memory.pool.leaktracking.types"
    Default value: "nv.tuning.memory.pool.leaktracking.types"
    See Also:
    
    Constant Field Values
  - POOL_LEAKTRACKING_ENABLED_TYPES_DEFAULT
```
public static final String POOL_LEAKTRACKING_ENABLED_TYPES_DEFAULT
```
    The default value for POOL_LEAKTRACKING_ENABLED_PROPNAME ("nv.tuning.memory.pool.leaktracking.enabled"): false (none).
  - POOL_LEAKTRACKING_HISTORYSIZE_PROPNAME
```
public static final String POOL_LEAKTRACKING_HISTORYSIZE_PROPNAME
```
    Property that controls the number of pool misses that are retained for diagnosing pool leaks.
    If the throughput of pool misses is high increasing this value will show older misses in the diagnostic dump which may be necessary to diagnose problematic pool misses.
    This property must be set as a system property on the jvm command line
    Property Name: "nv.tuning.memory.pool.leaktracking.historySize"
    Default value: 100
    
    See Also:
    
    Constant Field Values
  - POOL_LEAKTRACKING_HISTORYSIZE_DEFAULT
```
public static final int POOL_LEAKTRACKING_HISTORYSIZE_DEFAULT
```
    The default value for POOL_LEAKTRACKING_HISTORYSIZE_PROPNAME ("nv.tuning.memory.pool.leaktracking.historySize"): 100.
    
    See Also:
    
    Constant Field Values
  - POOL_LEAKTRACKING_TRIGGER_THRESHOLD_PROPNAME
```
public static final String POOL_LEAKTRACKING_TRIGGER_THRESHOLD_PROPNAME
```
    Property that controls the trigger threshold on which to dump pool leaks.
    Decreasing this value is useful to trigger a pool leak dump faster, but choosing a value too low can trigger the dump too early in the case where the size of a healthy pool is dynamically stabilizing. For example, if pool items are held outside of the pool for a relatively long time prior to be returned a large number of pool misses initially is okay while the pool grows to size.
    This property must be set as a system property on the jvm command line
    Property Name: "nv.tuning.memory.pool.leaktracking.triggerThreshold"
    Default value: 100000
    
    See Also:
    
    Constant Field Values
  - POOL_LEAKTRACKING_TRIGGER_THRESHOLD_DEFAULT
```
public static final int POOL_LEAKTRACKING_TRIGGER_THRESHOLD_DEFAULT
```
    The default value for POOL_LEAKTRACKING_HISTORYSIZE_PROPNAME ("nv.tuning.memory.pool.leaktracking.triggerThreshold"): 100000.
    
    See Also:
    
    Constant Field Values
  - POOL_DETACHEDWASH_PROPNAME
```
public static final String POOL_DETACHEDWASH_PROPNAME
```
    Property that controls whether objects returned to a pool a washed in a detached thread.
    When a pool item is returned to its pool its init() method is called to clean up the item for reuse. By default this is done by the thread that is returning the Item to the pool. Enabling a detached wash thread allows the item cleanup to be done on a separate thread which can improve latency for the thread returning the Item.
    Property Name: "nv.pool.detachedwash"
    Default value: false
    
    See Also:
    
    Constant Field Values
  - POOL_DETACHEDWASH_DEFAULT
```
public static final boolean POOL_DETACHEDWASH_DEFAULT
```
    The default value for POOL_DETACHEDWASH_PROPNAME ("nv.pool.detachedwash"): false.
    
    See Also:
    
    Constant Field Values
  - POOL_DETACHEDWASH_CPUAFFINITIYMASK_PROPNAME
```
public static final String POOL_DETACHEDWASH_CPUAFFINITIYMASK_PROPNAME
```
    Property that controls the cpu affinitiy mask of the detached pool washer when enabled. Property Name: "nv.pool.detachedwash.cpuaffinitymask"
    Default value: Default CPU affinity mask
    
    See Also:
    
    Constant Field Values
  - POOL_DETACHEDWASH_QUEUEDEPTH_PROPNAME
```
public static final String POOL_DETACHEDWASH_QUEUEDEPTH_PROPNAME
```
    Property that controls the queue depth of the detached pool washer when enabled. Property Name: "nv.pool.detachedwash.queueDepth"
    Default value: 1024
    
    See Also:
    
    Constant Field Values
  - POOL_DETACHEDWASH_QUEUEDEPTH_DEFAULT
```
public static final int POOL_DETACHEDWASH_QUEUEDEPTH_DEFAULT
```
    The default value for POOL_DETACHEDWASH_QUEUEDEPTH_PROPNAME ("nv.pool.detachedwash.queueDepth"): 1024.
    
    See Also:
    
    Constant Field Values
  - POOL_DETACHEDWASH_WAITSTRATEGY_PROPNAME
```
public static final String POOL_DETACHEDWASH_WAITSTRATEGY_PROPNAME
```
    Property that controls the wait strategy for the detached pool washer thread when enabled. Property Name: "nv.pool.detachedwash.waitstrategy"
    Default value: "Blocking"
    
    See Also:
    
    Constant Field Values
  - POOL_DETACHEDWASH_WAITSTRATEGY_DEFAULT
```
public static final String POOL_DETACHEDWASH_WAITSTRATEGY_DEFAULT
```
    The default value for POOL_DETACHEDWASH_WAITSTRATEGY_PROPNAME ("nv.pool.detachedwash.waitstrategy"): "Blocking".
    
    See Also:
    
    Constant Field Values
  - POOL_SOURCE_PARAMS_FROM_ENV_PROPNAME
```
public static final String POOL_SOURCE_PARAMS_FROM_ENV_PROPNAME
```
    Property that controls whether pool parameters can be sourced from the environment.
    When true calls to create pools will result in Params.load(poolkey, UtlEnv.getProps(), false being invoked to apply pool parameters that haven't already been set explicitly. To override programmatically set values see POOL_OVERRIDE_PARAMS_FROM_ENV_PROPNAME.
    This setting is currently classified as experimental. It and its semantics is subject to change.
    Property Name: "nv.tuning.memory.pool.sourceparamsfromenv"
    Default value: true
    
    See Also:
    
    Constant Field Values
  - POOL_SOURCE_PARAMS_FROM_ENV_DEFAULT
```
public static final boolean POOL_SOURCE_PARAMS_FROM_ENV_DEFAULT
```
    The default value for POOL_SOURCE_PARAMS_FROM_ENV_PROPNAME ("nv.tuning.memory.pool.sourceparamsfromenv"): true.
    
    See Also:
    
    Constant Field Values
  - POOL_OVERRIDE_PARAMS_FROM_ENV_PROPNAME
```
public static final String POOL_OVERRIDE_PARAMS_FROM_ENV_PROPNAME
```
    Property that controls whether pool parameters can be overridden from the environment.
    By default when pool parameters are sourced from the environment, they will not override values explicitly set programmatically or from other property sources. Setting this property forces the environment specified values to take precedence.
    This property should be used with extreme care as overriding programmatically set pool parameters can have adverse effects.
    This property takes no effect if UtlConstants#POOL_SOURCE_PARAMS_FROM_ENV is disabled.
    This setting is currently classified as experimental. It and its semantics is subject to change.
    Property Name: "nv.tuning.memory.pool.overrideparamsfromenv"
    Default value: false
    
    See Also:
    
    POOL_SOURCE_PARAMS_FROM_ENV_PROPNAME, Constant Field Values
  - POOL_OVERRIDE_PARAMS_FROM_ENV_DEFAULT
```
public static final boolean POOL_OVERRIDE_PARAMS_FROM_ENV_DEFAULT
```
    The default value for POOL_OVERRIDE_PARAMS_FROM_ENV_PROPNAME ("nv.tuning.memory.pool.overrideparamsfromenv"): false.
    
    See Also:
    
    Constant Field Values
  - REFTRACKING_ENABLED_PROPNAME
```
public static final String REFTRACKING_ENABLED_PROPNAME
```
    Globally enables reference tracking for pooled objects.
    Enabling reference tracking captures and stores stack traces on acquire and dispose of pooled objects. Reference tracking can be enabled to diagnose reference counting errors caused by attempts to acquire or dispose an already disposed object. When enabled the reference tracking history for the object when such an error is detected.
    Reference tracking can also be enabled to help diagnose pool leaks when POOL_LEAKTRACKING_ENABLED_PROPNAME is enabled in which case the reference history for items recently taken from a pool can be dumped to show what code has acquire but not disposed of a pool item.
    WARNING: Reference tracking has very high overhead. It is intended only for use in a diagnostic scenarios and should never be enabled for production. The overhead of enabling reference tracking can be mitigated by using REFTRACKING_TYPES_PROPNAME, but it may also be necessary to reduce the throughput of the application to collect meaningful results.
    This property must be set as a system property on the jvm command line
    Property Name: "nv.reftracking.enabled"
    Default value: false
    
    See Also:
    
    Constant Field Values
  - REFTRACKING_ENABLED_DEFAULT
```
public static final boolean REFTRACKING_ENABLED_DEFAULT
```
    The default value for REFTRACKING_ENABLED_PROPNAME ("nv.reftracking.enabled"): false.
    
    See Also:
    
    Constant Field Values
  - REFTRACKING_TYPES_PROPNAME
```
public static final String REFTRACKING_TYPES_PROPNAME
```
    Enables reference tracking for specific types of pooled elements
    Enabling reference tracking captures and stores stack traces on acquire and dispose of pooled objects. Reference tracking can be enabled to diagnose reference counting errors caused by attempts to acquire or dispose an already disposed object. When enabled the reference tracking history for the object when such an error is detected.
    Reference tracking can also be enabled to help diagnose pool leaks when POOL_LEAKTRACKING_ENABLED_PROPNAME is enabled in which case the reference history for items recently taken from a pool can be dumped to show what code has acquire but not disposed of a pool item.
    Usage
```
-Dnv.reftracking.types=fullyQualifiedClass1|fullyQualifiedClassN
```
    Specifying:
```
-Dnv.reftracking.types=*
```
    enables pool leak tracking for all types. WARNING: Reference tracking has very high overhead. It is intended only for use in a diagnostic scenarios and should never be enabled for production. It may be necessary to reduce the throughput of the application to collect meaningful results.
    This property must be set as a system property on the jvm command line
    Property Name: "nv.reftracking.types"
    Default value: REFTRACKING_TYPES_DEFAULT (none)
    See Also:
    
    Constant Field Values
  - REFTRACKING_TYPES_DEFAULT
```
public static final String REFTRACKING_TYPES_DEFAULT
```
    The default value for REFTRACKING_TYPES_PROPNAME ("nv.reftracking.types"): null (none).
  - REFTRACKING_HISTORYSIZE_PROPNAME
```
public static final String REFTRACKING_HISTORYSIZE_PROPNAME
```
    Property that controls the history size to maintain for reference tracked pool items.
    When reference tracking is enabled for a type, this property controls the number of previous incarnations of the item through the pool to track. This is important because it is possible that when an item is returned to a pool too early and then taken back out in another incarnation, it is possible that code from the previous incarnation may be the root cause of the problem. Showing previous incarnations in which there were not pooling problems can also help to highlight code paths that are not problematic.
    Reducing this value can decrease the memory overhead associate with reference tracking. Increasing this value provides more history at the cost of more memory overhead.
    This property must be set as a system property on the jvm command line Property Name: "nv.pool.detachedwash.waitstrategy"
    Default value: "Blocking"
    
    See Also:
    
    Constant Field Values
  - REFTRACKING_HISTORYSIZE_DEFAULT
```
public static final int REFTRACKING_HISTORYSIZE_DEFAULT
```
    The default value for REFTRACKING_HISTORYSIZE_PROPNAME ("nv.reftracking.historysize"): 5 (none).
    
    See Also:
    
    Constant Field Values
  - THREAD_ENABLECPUAFFINITYMASKS_PROPNAME
```
public static final String THREAD_ENABLECPUAFFINITYMASKS_PROPNAME
```
    Property that controls whether or not thread cpu affinitization is enabled.
    Cpu affinitization is currently only supported on linux platforms. When enabled A calling thread can call UtlThread.setCPUAffinityMask(String) to affinitize it to a processor core.
    Property Name: "nv.tuning.cpu.enableaffinitymasks"
    Default value: false
    
    See Also:
    
    Constant Field Values
  - THREAD_ENABLECPUAFFINITYMASKS_DEFAULT
```
public static final boolean THREAD_ENABLECPUAFFINITYMASKS_DEFAULT
```
    The default value for THREAD_ENABLECPUAFFINITYMASKS_PROPNAME ("nv.tuning.cpu.enableaffinitymasks"): false.
    
    See Also:
    
    Constant Field Values
  - THREAD_DEFAULTCPUAFFINITYMASK_PROPNAME
```
public static final String THREAD_DEFAULTCPUAFFINITYMASK_PROPNAME
```
    Property that controls the default affinity mask set by UtlThread.setDefaultCPUAffinityMask().
    
    Property Name: "nv.tuning.cpu.defaultaffinitymask"
    Default value: "0"
    
    See Also:
    
    UtlThread.setCPUAffinityMask(String), Constant Field Values
  - THREAD_DEFAULTCPUAFFINITYMASK_DEFAULT
```
public static final String THREAD_DEFAULTCPUAFFINITYMASK_DEFAULT
```
    The default value for THREAD_DEFAULTCPUAFFINITYMASK_PROPNAME ("nv.tuning.cpu.defaultaffinitymask"): "0".
    
    See Also:
    
    Constant Field Values
  - THREAD_WAIT_STATS_ENABLE
```
public static final String THREAD_WAIT_STATS_ENABLE
```
    Property that controls whether or not thread spin loop stats are enabled.
    When enabled threads that support it, will record time spent busy spinning.
    Property Name: "nv.threadwaitstatsenabled"
    Default value: true
    
    See Also:
    
    Constant Field Values
  - THREAD_WAIT_STATS_ENABLE_DEFAULT
```
public static final boolean THREAD_WAIT_STATS_ENABLE_DEFAULT
```
    The default value for THREAD_WAIT_STATS_ENABLE ("nv.threadwaitstatsenabled"): true.
    
    See Also:
    
    Constant Field Values
  - BYTE_SIZE_IN_BYTES
```
public static final int BYTE_SIZE_IN_BYTES
```
    The size of a Byte in bytes
    
    See Also:
    
    Constant Field Values
  - CHAR_SIZE_IN_BYTES
```
public static final int CHAR_SIZE_IN_BYTES
```
    The size of a Character in bytes
    
    See Also:
    
    Constant Field Values
  - SHORT_SIZE_IN_BYTES
```
public static final int SHORT_SIZE_IN_BYTES
```
    The size of a Short in bytes
    
    See Also:
    
    Constant Field Values
  - INT_SIZE_IN_BYTES
```
public static final int INT_SIZE_IN_BYTES
```
    The size of a Integer in bytes
    
    See Also:
    
    Constant Field Values
  - FLOAT_SIZE_IN_BYTES
```
public static final int FLOAT_SIZE_IN_BYTES
```
    The size of a Float in bytes
    
    See Also:
    
    Constant Field Values
  - LONG_SIZE_IN_BYTES
```
public static final int LONG_SIZE_IN_BYTES
```
    The size of a Long in bytes
    
    See Also:
    
    Constant Field Values
  - DOUBLE_SIZE_IN_BYTES
```
public static final int DOUBLE_SIZE_IN_BYTES
```
    The size of a Double in bytes
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - UtlConstants
```
public UtlConstants()
```

Class UtlConstants

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

TIME_USENATIVE_PROPNAME

TIME_USENATIVE_DEFAULT

TIME_FORMAT_PROPNAME

TIME_FORMAT_DEFAULT

TIME_TIMEZONEFORMAT_PROPNAME

TIME_TIMEZONEFORMAT_DEFAULT

FILE_USENATIVE_PROPNAME

FILE_USENATIVE_DEFAULT

POOL_SHOULD_POOL_PROPNAME

POOL_SHOULD_POOL_DEFAULT

POOL_LOCKINGSTRATEGY_PROPNAME

POOL_LOCKINGSTRATEGY_DEFAULT

POOL_LEAKTRACKING_ENABLED_PROPNAME

POOL_LEAKTRACKING_ENABLED_DEFAULT

POOL_LEAKTRACKING_ENABLED_TYPES_PROPNAME

POOL_LEAKTRACKING_ENABLED_TYPES_DEFAULT

POOL_LEAKTRACKING_HISTORYSIZE_PROPNAME

POOL_LEAKTRACKING_HISTORYSIZE_DEFAULT

POOL_LEAKTRACKING_TRIGGER_THRESHOLD_PROPNAME

POOL_LEAKTRACKING_TRIGGER_THRESHOLD_DEFAULT

POOL_DETACHEDWASH_PROPNAME

POOL_DETACHEDWASH_DEFAULT

POOL_DETACHEDWASH_CPUAFFINITIYMASK_PROPNAME

POOL_DETACHEDWASH_QUEUEDEPTH_PROPNAME

POOL_DETACHEDWASH_QUEUEDEPTH_DEFAULT

POOL_DETACHEDWASH_WAITSTRATEGY_PROPNAME

POOL_DETACHEDWASH_WAITSTRATEGY_DEFAULT

POOL_SOURCE_PARAMS_FROM_ENV_PROPNAME

POOL_SOURCE_PARAMS_FROM_ENV_DEFAULT

POOL_OVERRIDE_PARAMS_FROM_ENV_PROPNAME

POOL_OVERRIDE_PARAMS_FROM_ENV_DEFAULT

REFTRACKING_ENABLED_PROPNAME

REFTRACKING_ENABLED_DEFAULT

REFTRACKING_TYPES_PROPNAME

REFTRACKING_TYPES_DEFAULT

REFTRACKING_HISTORYSIZE_PROPNAME

REFTRACKING_HISTORYSIZE_DEFAULT

THREAD_ENABLECPUAFFINITYMASKS_PROPNAME

THREAD_ENABLECPUAFFINITYMASKS_DEFAULT

THREAD_DEFAULTCPUAFFINITYMASK_PROPNAME

THREAD_DEFAULTCPUAFFINITYMASK_DEFAULT

THREAD_WAIT_STATS_ENABLE

THREAD_WAIT_STATS_ENABLE_DEFAULT

BYTE_SIZE_IN_BYTES

CHAR_SIZE_IN_BYTES

SHORT_SIZE_IN_BYTES

INT_SIZE_IN_BYTES

FLOAT_SIZE_IN_BYTES

LONG_SIZE_IN_BYTES

DOUBLE_SIZE_IN_BYTES

Constructor Detail

UtlConstants