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java.nio

pack-priv Class Bits

Class Inheritance

extends Object

java.lang.Object
java.nio.Bits

Imports

jdk.internal.access.JavaLangRefAccess, .SharedSecrets, jdk.internal.misc.Unsafe, .VM, .VM.BufferPool, java.util.concurrent.atomic.AtomicLong

Access to bits, native and otherwise.

Field Summary

Modifier and Type	Field and Description
pack-priv static final VM.BufferPool	BUFFER_POOL
private static final AtomicLong	COUNT
private static final long	INITIAL_SLEEP
pack-priv static final int	JNI_COPY_FROM_ARRAY_THRESHOLD
pack-priv static final int	JNI_COPY_TO_ARRAY_THRESHOLD
private static volatile long	MAX_MEMORY
private static final int	MAX_SLEEPS
private static volatile boolean	MEMORY_LIMIT_SET
private static int	PAGE_SIZE
private static int	RESERVE_GC_EPOCH
private static final Object	RESERVE_SLOWPATH_LOCK
private static final AtomicLong	RESERVED_MEMORY
private static final AtomicLong	TOTAL_CAPACITY
private static boolean	UNALIGNED
private static final Unsafe	UNSAFE
pack-priv static final long	UNSAFE_SET_THRESHOLD

Constructor Summary

Access	Constructor and Description
private	Bits()

Method Summary

Modifier and Type	Method and Description
pack-priv static long	pageCount(long size)
pack-priv static int	pageSize()
pack-priv static void	reserveMemory(long size, long cap)
pack-priv static void	setMemory(long the starting memory address srcAddr, long the number of bytes to set count, byte the byte value to set value) Sets a block of memory starting from a given address to a specified byte value.
pack-priv static short	swap(short x)
pack-priv static char	swap(char x)
pack-priv static int	swap(int x)
pack-priv static long	swap(long x)
private static boolean	tryReserveMemory(long size, long cap)
private static boolean	tryReserveOrClean(long size, long cap)
pack-priv static boolean	unaligned()
pack-priv static void	unreserveMemory(long size, long cap)

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

Field Detail

BUFFER_POOL	back to summary
pack-priv static final VM.BufferPool BUFFER_POOL

COUNT	back to summary
private static final AtomicLong COUNT

INITIAL_SLEEP	back to summary
private static final long INITIAL_SLEEP

JNI_COPY_FROM_ARRAY_THRESHOLD	back to summary
pack-priv static final int JNI_COPY_FROM_ARRAY_THRESHOLD

JNI_COPY_TO_ARRAY_THRESHOLD	back to summary
pack-priv static final int JNI_COPY_TO_ARRAY_THRESHOLD

MAX_MEMORY	back to summary
private static volatile long MAX_MEMORY

MAX_SLEEPS	back to summary
private static final int MAX_SLEEPS

MEMORY_LIMIT_SET	back to summary
private static volatile boolean MEMORY_LIMIT_SET

PAGE_SIZE	back to summary
private static int PAGE_SIZE

RESERVE_GC_EPOCH	back to summary
private static int RESERVE_GC_EPOCH

RESERVE_SLOWPATH_LOCK	back to summary
private static final Object RESERVE_SLOWPATH_LOCK

RESERVED_MEMORY	back to summary
private static final AtomicLong RESERVED_MEMORY

TOTAL_CAPACITY	back to summary
private static final AtomicLong TOTAL_CAPACITY

UNALIGNED	back to summary
private static boolean UNALIGNED

UNSAFE	back to summary
private static final Unsafe UNSAFE

UNSAFE_SET_THRESHOLD	back to summary
pack-priv static final long UNSAFE_SET_THRESHOLD

Constructor Detail

Bits	back to summary
private Bits()

Method Detail

pageCount	back to summary
pack-priv static long pageCount(long size)

pageSize	back to summary
pack-priv static int pageSize()

reserveMemory	back to summary
pack-priv static void reserveMemory(long size, long cap)

setMemory

back to summary

pack-priv static void setMemory(long srcAddr, long count, byte value)

Sets a block of memory starting from a given address to a specified byte value.

Parameters

srcAddr:long: the starting memory address
count:long: the number of bytes to set
value:byte: the byte value to set

swap	back to summary
pack-priv static short swap(short x)

swap	back to summary
pack-priv static char swap(char x)

swap	back to summary
pack-priv static int swap(int x)

swap	back to summary
pack-priv static long swap(long x)

tryReserveMemory	back to summary
private static boolean tryReserveMemory(long size, long cap)

tryReserveOrClean	back to summary
private static boolean tryReserveOrClean(long size, long cap) throws InterruptedException

unaligned	back to summary
pack-priv static boolean unaligned()

unreserveMemory	back to summary
pack-priv static void unreserveMemory(long size, long cap)