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sun.nio.fs

pack-priv Class NativeBuffers

Class Inheritance

extends Object

java.lang.Object
sun.nio.fs.NativeBuffers

Imports

jdk.internal.misc.TerminatingThreadLocal, .Unsafe

Factory for native buffers.

Field Summary

Modifier and Type	Field and Description
private static final int	TEMP_BUF_POOL_SIZE
private static final TerminatingThreadLocal<NativeBuffer[]>	threadLocal
private static final Unsafe	unsafe

Constructor Summary

Access	Constructor and Description
private	NativeBuffers()

Method Summary

Modifier and Type	Method and Description
pack-priv static NativeBuffer	allocNativeBuffer(int size) Allocates a native buffer, of at least the given size, from the heap.
pack-priv static NativeBuffer	asNativeBuffer(byte[] cstr) Copies a byte array and zero terminator into a native buffer, returning the buffer.
pack-priv static void	copyCStringToNativeBuffer(byte[] cstr, NativeBuffer buffer) Copies a byte array and zero terminator into a given native buffer.
pack-priv static NativeBuffer	getNativeBuffer(int size) Returns a native buffer, of at least the given size.
pack-priv static NativeBuffer	getNativeBufferFromCache(int size) Returns a native buffer, of at least the given size, from the thread local cache.
pack-priv static void	releaseNativeBuffer(NativeBuffer buffer) Releases the given buffer.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

TEMP_BUF_POOL_SIZE	back to summary
private static final int TEMP_BUF_POOL_SIZE

threadLocal	back to summary
private static final TerminatingThreadLocal<NativeBuffer[]> threadLocal

unsafe	back to summary
private static final Unsafe unsafe

Constructor Detail

NativeBuffers	back to summary
private NativeBuffers()

Method Detail

allocNativeBuffer	back to summary
pack-priv static NativeBuffer allocNativeBuffer(int size) Allocates a native buffer, of at least the given size, from the heap.

asNativeBuffer	back to summary
pack-priv static NativeBuffer asNativeBuffer(byte[] cstr) Copies a byte array and zero terminator into a native buffer, returning the buffer.

copyCStringToNativeBuffer	back to summary
pack-priv static void copyCStringToNativeBuffer(byte[] cstr, NativeBuffer buffer) Copies a byte array and zero terminator into a given native buffer.

getNativeBuffer	back to summary
pack-priv static NativeBuffer getNativeBuffer(int size) Returns a native buffer, of at least the given size. The native buffer is taken from the thread local cache if possible; otherwise it is allocated from the heap.

getNativeBufferFromCache	back to summary
pack-priv static NativeBuffer getNativeBufferFromCache(int size) Returns a native buffer, of at least the given size, from the thread local cache.

releaseNativeBuffer	back to summary
pack-priv static void releaseNativeBuffer(NativeBuffer buffer) Releases the given buffer. If there is space in the thread local cache then the buffer goes into the cache; otherwise the memory is deallocated.