V8Flags (javet 4.1.3 API)

java.lang.Object
- com.caoccao.javet.interop.options.V8Flags

```
public final class V8Flags
extends java.lang.Object
```
The type V8 flags defines some built-in V8 flags. The complete flag definition is stored in v8/src/flags/flag-definitions.h

Since:

0.7.0

Field Summary

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`FLAG_ALLOW_NATIVES_SYNTAX` The constant FLAG_ALLOW_NATIVES_SYNTAX.
`static java.lang.String`	`FLAG_EXPOSE_GC` The constant FLAG_EXPOSE_GC.
`static java.lang.String`	`FLAG_EXPOSE_INSPECTOR_SCRIPTS` The constant FLAG_EXPOSE_INSPECTOR_SCRIPTS.
`static java.lang.String`	`FLAG_INITIAL_HEAP_SIZE` The constant FLAG_INITIAL_HEAP_SIZE.
`static java.lang.String`	`FLAG_JS_FLOAT_16_ARRAY` The constant FLAG_JS_FLOAT_16_ARRAY.
`static java.lang.String`	`FLAG_MAX_HEAP_SIZE` The constant FLAG_MAX_HEAP_SIZE.
`static java.lang.String`	`FLAG_MAX_OLD_SPACE_SIZE` The constant FLAG_MAX_OLD_SPACE_SIZE.
`static java.lang.String`	`FLAG_USE_STRICT` The constant FLAG_USE_STRICT.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`java.lang.String`	`getCustomFlags()` Gets custom flags.
`java.lang.String`	`getIcuDataFile()` Gets icu data file.
`int`	`getInitialHeapSize()` Gets initial heap size.
`int`	`getMaxHeapSize()` Gets max heap size.
`int`	`getMaxOldSpaceSize()` Gets max old space size.
`boolean`	`isAllowNativesSyntax()` Is allow natives syntax.
`boolean`	`isExposeGC()` Is expose gc.
`boolean`	`isExposeInspectorScripts()` Is expose inspector scripts.
`boolean`	`isJsFloat16Array()` Is js float 16 array enabled.
`boolean`	`isSealed()` Is sealed.
`boolean`	`isUseStrict()` Is use strict.
`V8Flags`	`seal()` Seal the V8 flags so that it is read-only.
`V8Flags`	`setAllowNativesSyntax(boolean allowNativesSyntax)` Sets allow natives syntax.
`V8Flags`	`setCustomFlags(java.lang.String customFlags)` Sets custom flags (space separated).
`V8Flags`	`setExposeGC(boolean exposeGC)` Sets expose gc.
`V8Flags`	`setExposeInspectorScripts(boolean exposeInspectorScripts)` Sets expose inspector scripts.
`V8Flags`	`setIcuDataFile(java.lang.String icuDataFile)` Sets icu data file.
`V8Flags`	`setInitialHeapSize(int initialHeapSize)` Sets initial heap size.
`V8Flags`	`setJsFloat16Array(boolean jsFloat16Array)` Sets js float 16 array.
`V8Flags`	`setMaxHeapSize(int maxHeapSize)` Sets max heap size.
`V8Flags`	`setMaxOldSpaceSize(int maxOldSpaceSize)` Sets max old space size.
`V8Flags`	`setUseStrict(boolean useStrict)` Sets use strict.
`java.lang.String`	`toString()`

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

- Field Detail
  - FLAG_ALLOW_NATIVES_SYNTAX
```
public static final java.lang.String FLAG_ALLOW_NATIVES_SYNTAX
```
    The constant FLAG_ALLOW_NATIVES_SYNTAX.
    
    Since:
    
    0.9.13
    
    See Also:
    
    Constant Field Values
  - FLAG_EXPOSE_GC
```
public static final java.lang.String FLAG_EXPOSE_GC
```
    The constant FLAG_EXPOSE_GC.
    
    Since:
    
    0.9.13
    
    See Also:
    
    Constant Field Values
  - FLAG_EXPOSE_INSPECTOR_SCRIPTS
```
public static final java.lang.String FLAG_EXPOSE_INSPECTOR_SCRIPTS
```
    The constant FLAG_EXPOSE_INSPECTOR_SCRIPTS.
    
    Since:
    
    0.9.13
    
    See Also:
    
    Constant Field Values
  - FLAG_INITIAL_HEAP_SIZE
```
public static final java.lang.String FLAG_INITIAL_HEAP_SIZE
```
    The constant FLAG_INITIAL_HEAP_SIZE.
    
    Since:
    
    0.9.13
    
    See Also:
    
    Constant Field Values
  - FLAG_JS_FLOAT_16_ARRAY
```
public static final java.lang.String FLAG_JS_FLOAT_16_ARRAY
```
    The constant FLAG_JS_FLOAT_16_ARRAY.
    
    Since:
    
    4.1.0
    
    See Also:
    
    Constant Field Values
  - FLAG_MAX_OLD_SPACE_SIZE
```
public static final java.lang.String FLAG_MAX_OLD_SPACE_SIZE
```
    The constant FLAG_MAX_OLD_SPACE_SIZE.
    
    Since:
    
    0.9.13
    
    See Also:
    
    Constant Field Values
  - FLAG_MAX_HEAP_SIZE
```
public static final java.lang.String FLAG_MAX_HEAP_SIZE
```
    The constant FLAG_MAX_HEAP_SIZE.
    
    Since:
    
    0.9.13
    
    See Also:
    
    Constant Field Values
  - FLAG_USE_STRICT
```
public static final java.lang.String FLAG_USE_STRICT
```
    The constant FLAG_USE_STRICT.
    
    Since:
    
    0.9.13
    
    See Also:
    
    Constant Field Values
- Method Detail
  - getCustomFlags
```
public java.lang.String getCustomFlags()
```
    Gets custom flags.
    
    Returns:
    
    the custom flags
    
    Since:
    
    0.9.13
  - getIcuDataFile
```
public java.lang.String getIcuDataFile()
```
    Gets icu data file.
    
    Returns:
    
    the icu data file
    
    Since:
    
    4.0.0
  - getInitialHeapSize
```
public int getInitialHeapSize()
```
    Gets initial heap size.
    
    Returns:
    
    the initial heap size
    
    Since:
    
    0.9.13
  - getMaxHeapSize
```
public int getMaxHeapSize()
```
    Gets max heap size.
    
    Returns:
    
    the max heap size
    
    Since:
    
    0.9.13
  - getMaxOldSpaceSize
```
public int getMaxOldSpaceSize()
```
    Gets max old space size.
    
    Returns:
    
    the max old space size
    
    Since:
    
    0.9.13
  - isAllowNativesSyntax
```
public boolean isAllowNativesSyntax()
```
    Is allow natives syntax.
    
    Returns:
    
    the boolean
    
    Since:
    
    0.7.0
  - isExposeGC
```
public boolean isExposeGC()
```
    Is expose gc.
    
    Returns:
    
    the boolean
    
    Since:
    
    0.7.0
  - isExposeInspectorScripts
```
public boolean isExposeInspectorScripts()
```
    Is expose inspector scripts.
    
    Returns:
    
    the boolean
    
    Since:
    
    0.7.0
  - isJsFloat16Array
```
public boolean isJsFloat16Array()
```
    Is js float 16 array enabled.
    
    Returns:
    
    true : yes, false: no
    
    Since:
    
    4.1.0
  - isSealed
```
public boolean isSealed()
```
    Is sealed.
    
    Returns:
    
    the boolean
    
    Since:
    
    0.7.0
  - isUseStrict
```
public boolean isUseStrict()
```
    Is use strict.
    
    Returns:
    
    the boolean
    
    Since:
    
    0.7.0
  - seal
```
public V8Flags seal()
```
    Seal the V8 flags so that it is read-only.
    
    Returns:
    
    the self
    
    Since:
    
    0.7.0
  - setAllowNativesSyntax
```
public V8Flags setAllowNativesSyntax(boolean allowNativesSyntax)
```
    Sets allow natives syntax.
    
    Parameters:
    
    allowNativesSyntax - allow natives syntax
    
    Returns:
    
    the self
    
    Since:
    
    0.7.0
  - setCustomFlags
```
public V8Flags setCustomFlags(java.lang.String customFlags)
```
    Sets custom flags (space separated).
    
    Parameters:
    
    customFlags - the custom flags
    
    Returns:
    
    the self
    
    Since:
    
    0.9.13
  - setExposeGC
```
public V8Flags setExposeGC(boolean exposeGC)
```
    Sets expose gc.
    
    Parameters:
    
    exposeGC - the expose gc
    
    Returns:
    
    the self
    
    Since:
    
    0.7.0
  - setExposeInspectorScripts
```
public V8Flags setExposeInspectorScripts(boolean exposeInspectorScripts)
```
    Sets expose inspector scripts.
    
    Parameters:
    
    exposeInspectorScripts - the expose inspector scripts
    
    Returns:
    
    the self
    
    Since:
    
    0.7.0
  - setIcuDataFile
```
public V8Flags setIcuDataFile(java.lang.String icuDataFile)
```
    Sets icu data file.
    
    Parameters:
    
    icuDataFile - the icu data file
    
    Returns:
    
    the icu data file
    
    Since:
    
    4.0.0
  - setInitialHeapSize
```
public V8Flags setInitialHeapSize(int initialHeapSize)
```
    Sets initial heap size.
    
    Parameters:
    
    initialHeapSize - the initial heap size
    
    Returns:
    
    the self
    
    Since:
    
    0.9.13
  - setJsFloat16Array
```
public V8Flags setJsFloat16Array(boolean jsFloat16Array)
```
    Sets js float 16 array.
    
    Parameters:
    
    jsFloat16Array - the js float 16 array
    
    Returns:
    
    the self
    
    Since:
    
    4.1.0
  - setMaxHeapSize
```
public V8Flags setMaxHeapSize(int maxHeapSize)
```
    Sets max heap size.
    Currently, by default V8 has a memory limit of 512mb on 32-bit systems, and 1gb on 64-bit systems. The limit can be raised by setting --max-old-space-size to a maximum of ~1gb (32-bit) and ~1.7gb (64-bit), but it is recommended that you split your single process into several workers if you are hitting memory limits.
    Please refer to One small step for Chrome, one giant heap for V8 for detail.
    
    Parameters:
    
    maxHeapSize - the max heap size
    
    Returns:
    
    the self
    
    Since:
    
    0.9.13
  - setMaxOldSpaceSize
```
public V8Flags setMaxOldSpaceSize(int maxOldSpaceSize)
```
    Sets max old space size.
    
    Parameters:
    
    maxOldSpaceSize - the max old space size
    
    Returns:
    
    the self
    
    Since:
    
    0.9.13
  - setUseStrict
```
public V8Flags setUseStrict(boolean useStrict)
```
    Sets use strict.
    
    Parameters:
    
    useStrict - the use strict
    
    Returns:
    
    the self
    
    Since:
    
    0.7.0
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object

Class V8Flags

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

FLAG_ALLOW_NATIVES_SYNTAX

FLAG_EXPOSE_GC

FLAG_EXPOSE_INSPECTOR_SCRIPTS

FLAG_INITIAL_HEAP_SIZE

FLAG_JS_FLOAT_16_ARRAY

FLAG_MAX_OLD_SPACE_SIZE

FLAG_MAX_HEAP_SIZE

FLAG_USE_STRICT

Method Detail

getCustomFlags

getIcuDataFile

getInitialHeapSize

getMaxHeapSize

getMaxOldSpaceSize

isAllowNativesSyntax

isExposeGC

isExposeInspectorScripts

isJsFloat16Array

isSealed

isUseStrict

seal

setAllowNativesSyntax

setCustomFlags

setExposeGC

setExposeInspectorScripts

setIcuDataFile

setInitialHeapSize

setJsFloat16Array

setMaxHeapSize

setMaxOldSpaceSize

setUseStrict

toString