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org.lwjgl.system.jemalloc

public abstract Class ExtentPurge

Class Inheritance

extends Callback
implements ExtentPurgeI

java.lang.Object
org.lwjgl.system.Callback
org.lwjgl.system.jemalloc.ExtentPurge

All Implemented Interfaces

org.lwjgl.system.jemalloc.ExtentPurgeI, org.lwjgl.system.CallbackI, org.lwjgl.system.Pointer

Known Direct Subclasses

org.lwjgl.system.jemalloc.ExtentPurge.Container

Imports

javax.annotation.*, org.lwjgl.system.*

Instances of this class may be set to the ExtentHooks struct.

Type


bool (*invoke) (
    extent_hooks_t *extent_hooks,
    void *addr,
    size_t size,
    size_t offset,
    size_t length,
    unsigned int arena_ind
)

Nested and Inner Type Summary

Modifier and Type	Class and Description
private static class	ExtentPurge.Container

Constructor Summary

Access	Constructor and Description
protected	ExtentPurge()
pack-priv	ExtentPurge(long functionPointer)

Method Summary

Modifier and Type	Method and Description
public static ExtentPurge	Returns: the new `ExtentPurge` create(long functionPointer) Creates a `ExtentPurge` instance from the specified function pointer.
public static ExtentPurge	create(ExtentPurgeI instance) Creates a `ExtentPurge` instance that delegates to the specified `ExtentPurgeI` instance.
public static ExtentPurge	createSafe(long functionPointer) Like `create`, but returns `null` if `functionPointer` is `NULL`.

Inherited from org.lwjgl.system.Callback:: address equals free free get getSafe hashCode toString

Constructor Detail

ExtentPurge	back to summary
protected ExtentPurge()

ExtentPurge	back to summary
pack-priv ExtentPurge(long functionPointer)

Method Detail

create back to summary

create	back to summary
public static ExtentPurge create(long functionPointer) Creates a `ExtentPurge` instance from the specified function pointer. Returns:ExtentPurge the new `ExtentPurge`

public static ExtentPurge create(long functionPointer)

Creates a ExtentPurge instance from the specified function pointer.

Returns:ExtentPurge: the new ExtentPurge

create	back to summary
public static ExtentPurge create(ExtentPurgeI instance) Creates a `ExtentPurge` instance that delegates to the specified `ExtentPurgeI` instance.

createSafe back to summary

createSafe	back to summary
public static ExtentPurge createSafe(long functionPointer) Like `create`, but returns `null` if `functionPointer` is `NULL`. Annotations @Nullable

public static ExtentPurge createSafe(long functionPointer)

Like create, but returns null if functionPointer is NULL.

Annotations

@Nullable

org.lwjgl.system.jemalloc back to summary

private final Class ExtentPurge.Container

Class Inheritance

extends ExtentPurge

java.lang.Object
org.lwjgl.system.Callback
org.lwjgl.system.jemalloc.ExtentPurge
org.lwjgl.system.jemalloc.ExtentPurge.Container

Field Summary

Modifier and Type	Field and Description
private final ExtentPurgeI	delegate

Constructor Summary

Access	Constructor and Description
pack-priv	Container(long functionPointer, ExtentPurgeI delegate)

Method Summary

Modifier and Type	Method and Description
public boolean	invoke(long extent_hooks, long addr, long size, long offset, long length, int arena_ind) Implements org.lwjgl.system.jemalloc.ExtentPurgeI.invoke. Extent purge hook.

Inherited from org.lwjgl.system.jemalloc.ExtentPurge:: create create createSafe

Field Detail

delegate	back to summary
private final ExtentPurgeI delegate

delegate

back to summary

private final ExtentPurgeI delegate

Constructor Detail

Container	back to summary
pack-priv Container(long functionPointer, ExtentPurgeI delegate)

Container

back to summary

pack-priv Container(long functionPointer, ExtentPurgeI delegate)

Method Detail

invoke back to summary

invoke	back to summary
public boolean invoke(long extent_hooks, long addr, long size, long offset, long length, int arena_ind) Implements org.lwjgl.system.jemalloc.ExtentPurgeI.invoke. Doc from org.lwjgl.system.jemalloc.ExtentPurgeI.invoke. Extent purge hook. An extent purge function conforms to the `extent_purge_t` type and discards physical pages within the virtual memory mapping associated with an extent at given `addr` and `size` at `offset` bytes, extending for `length` on behalf of arena `arena_ind`. A lazy extent purge function (e.g. implemented via `madvise(..., MADV_FREE)`) can delay purging indefinitely and leave the pages within the purged virtual memory range in an indeterminite state, whereas a forced extent purge function immediately purges, and the pages within the virtual memory range will be zero-filled the next time they are accessed. If the function returns true, this indicates failure to purge. Annotations @Override

public boolean invoke(long extent_hooks, long addr, long size, long offset, long length, int arena_ind)

Implements org.lwjgl.system.jemalloc.ExtentPurgeI.invoke.

Doc from org.lwjgl.system.jemalloc.ExtentPurgeI.invoke.

Extent purge hook.

An extent purge function conforms to the extent_purge_t type and discards physical pages within the virtual memory mapping associated with an extent at given addr and size at offset bytes, extending for length on behalf of arena arena_ind. A lazy extent purge function (e.g. implemented via madvise(..., MADV_FREE)) can delay purging indefinitely and leave the pages within the purged virtual memory range in an indeterminite state, whereas a forced extent purge function immediately purges, and the pages within the virtual memory range will be zero-filled the next time they are accessed. If the function returns true, this indicates failure to purge.

Annotations

@Override