Package io.netty.util.internal

Class PlatformDependent0

  • final class PlatformDependent0
extends java.lang.Object
    The PlatformDependent operations which requires access to sun.misc.*.

    • Field Detail

      • ADDRESS_FIELD_OFFSET

        private static final long ADDRESS_FIELD_OFFSET

      • BYTE_ARRAY_BASE_OFFSET

        private static final long BYTE_ARRAY_BASE_OFFSET

      • INT_ARRAY_BASE_OFFSET

        private static final long INT_ARRAY_BASE_OFFSET

      • INT_ARRAY_INDEX_SCALE

        private static final long INT_ARRAY_INDEX_SCALE

      • LONG_ARRAY_BASE_OFFSET

        private static final long LONG_ARRAY_BASE_OFFSET

      • LONG_ARRAY_INDEX_SCALE

        private static final long LONG_ARRAY_INDEX_SCALE

      • DIRECT_BUFFER_CONSTRUCTOR

        private static final MethodHandle DIRECT_BUFFER_CONSTRUCTOR

      • ALLOCATE_ARRAY_METHOD

        private static final MethodHandle ALLOCATE_ARRAY_METHOD

      • ALIGN_SLICE

        private static final MethodHandle ALIGN_SLICE

      • OFFSET_SLICE

        private static final MethodHandle OFFSET_SLICE

      • ABSOLUTE_PUT_BUFFER

        private static final MethodHandle ABSOLUTE_PUT_BUFFER

      • ABSOLUTE_PUT_ARRAY

        private static final MethodHandle ABSOLUTE_PUT_ARRAY

      • MEMORY_SEGMENT_ADDRESS_OF_BUFFER

        private static final MethodHandle MEMORY_SEGMENT_ADDRESS_OF_BUFFER

      • SPLITTABLE_RANDOM_NEXT_BYTES

        private static final MethodHandle SPLITTABLE_RANDOM_NEXT_BYTES

      • IS_ANDROID

        private static final boolean IS_ANDROID

      • JAVA_VERSION

        private static final int JAVA_VERSION

      • EXPLICIT_NO_UNSAFE_CAUSE

        private static final java.lang.Throwable EXPLICIT_NO_UNSAFE_CAUSE

      • UNSAFE_UNAVAILABILITY_CAUSE

        private static final java.lang.Throwable UNSAFE_UNAVAILABILITY_CAUSE

      • RUNNING_IN_NATIVE_IMAGE

        private static final boolean RUNNING_IN_NATIVE_IMAGE

      • IS_EXPLICIT_TRY_REFLECTION_SET_ACCESSIBLE

        private static final boolean IS_EXPLICIT_TRY_REFLECTION_SET_ACCESSIBLE

      • IS_VIRTUAL_THREAD_METHOD_HANDLE

        static final MethodHandle IS_VIRTUAL_THREAD_METHOD_HANDLE

      • UNSAFE

        static final sun.misc.Unsafe UNSAFE

      • UNSAFE_COPY_THRESHOLD

        private static final long UNSAFE_COPY_THRESHOLD
        Limits the number of bytes to copy per Unsafe.copyMemory(long, long, long) to allow safepoint polling during a large copy.
        See Also:
        Constant Field Values

      • UNALIGNED

        private static final boolean UNALIGNED

      • BITS_MAX_DIRECT_MEMORY

        private static final long BITS_MAX_DIRECT_MEMORY

    • Constructor Detail

      • PlatformDependent0

        private PlatformDependent0()

    • Method Detail

      • getIsVirtualThreadMethodHandle

        private static MethodHandle getIsVirtualThreadMethodHandle()

      • isVirtualThread

        static boolean isVirtualThread​(java.lang.Thread thread)
        Parameters:
        thread - The thread to be checked.
        Returns:
        true if this Thread is a virtual thread, false otherwise.

      • isNativeImage

        static boolean isNativeImage()

      • isExplicitNoUnsafe

        static boolean isExplicitNoUnsafe()

      • explicitNoUnsafeCause0

        private static java.lang.Throwable explicitNoUnsafeCause0()

      • isUnaligned

        static boolean isUnaligned()

      • bitsMaxDirectMemory

        static long bitsMaxDirectMemory()
        Any value >= 0 should be considered as a valid max direct memory value.

      • hasUnsafe

        static boolean hasUnsafe()

      • getUnsafeUnavailabilityCause

        static java.lang.Throwable getUnsafeUnavailabilityCause()

      • hasMemorySegmentAddressOfBuffer

        static boolean hasMemorySegmentAddressOfBuffer()

      • unalignedAccess

        static boolean unalignedAccess()

      • splittableRandomNextBytes

        static void splittableRandomNextBytes​(java.util.SplittableRandom rng,
                                      byte[] data)

      • throwException

        static void throwException​(java.lang.Throwable cause)

      • throwException0

        private static <E extends java.lang.Throwable> void throwException0​(java.lang.Throwable t)
                                                             throws E extends java.lang.Throwable
        Throws:
        E extends java.lang.Throwable

      • hasDirectBufferNoCleanerConstructor

        static boolean hasDirectBufferNoCleanerConstructor()

      • reallocateDirectNoCleaner

        static java.nio.ByteBuffer reallocateDirectNoCleaner​(java.nio.ByteBuffer buffer,
                                                     int capacity)

      • allocateDirectNoCleaner

        static java.nio.ByteBuffer allocateDirectNoCleaner​(int capacity)

      • hasAlignSliceMethod

        static boolean hasAlignSliceMethod()

      • alignSlice

        static java.nio.ByteBuffer alignSlice​(java.nio.ByteBuffer buffer,
                                      int alignment)

      • hasOffsetSliceMethod

        static boolean hasOffsetSliceMethod()

      • offsetSlice

        static java.nio.ByteBuffer offsetSlice​(java.nio.ByteBuffer buffer,
                                       int index,
                                       int length)

      • hasAbsolutePutBufferMethod

        static boolean hasAbsolutePutBufferMethod()

      • hasAbsolutePutArrayMethod

        static boolean hasAbsolutePutArrayMethod()

      • absolutePut

        static java.nio.ByteBuffer absolutePut​(java.nio.ByteBuffer dst,
                                       int dstOffset,
                                       java.nio.ByteBuffer src,
                                       int srcOffset,
                                       int length)

      • absolutePut

        static java.nio.ByteBuffer absolutePut​(java.nio.ByteBuffer dst,
                                       int dstOffset,
                                       byte[] src,
                                       int srcOffset,
                                       int length)

      • hasAllocateArrayMethod

        static boolean hasAllocateArrayMethod()

      • allocateUninitializedArray

        static byte[] allocateUninitializedArray​(int size)

      • newDirectBuffer

        static java.nio.ByteBuffer newDirectBuffer​(long address,
                                           int capacity)

      • rethrowIfPossible

        private static void rethrowIfPossible​(java.lang.Throwable cause)

      • hasDirectByteBufferAddress

        static boolean hasDirectByteBufferAddress​(java.nio.ByteBuffer buffer)

      • directBufferAddress

        static long directBufferAddress​(java.nio.ByteBuffer buffer)

      • byteArrayBaseOffset

        static long byteArrayBaseOffset()

      • getObject

        static java.lang.Object getObject​(java.lang.Object object,
                                  long fieldOffset)

      • getInt

        static int getInt​(java.lang.Object object,
                  long fieldOffset)

      • getIntVolatile

        static int getIntVolatile​(java.lang.Object object,
                          long fieldOffset)

      • putOrderedInt

        static void putOrderedInt​(java.lang.Object object,
                          long fieldOffset,
                          int value)

      • getAndAddInt

        static int getAndAddInt​(java.lang.Object object,
                        long fieldOffset,
                        int value)

      • compareAndSwapInt

        static boolean compareAndSwapInt​(java.lang.Object object,
                                 long fieldOffset,
                                 int expected,
                                 int value)

      • safeConstructPutInt

        static void safeConstructPutInt​(java.lang.Object object,
                                long fieldOffset,
                                int value)

      • getLong

        private static long getLong​(java.lang.Object object,
                            long fieldOffset)

      • objectFieldOffset

        static long objectFieldOffset​(java.lang.reflect.Field field)

      • getByte

        static byte getByte​(long address)

      • getShort

        static short getShort​(long address)

      • getInt

        static int getInt​(long address)

      • getLong

        static long getLong​(long address)

      • getByte

        static byte getByte​(byte[] data,
                    int index)

      • getByte

        static byte getByte​(byte[] data,
                    long index)

      • getShort

        static short getShort​(byte[] data,
                      int index)

      • getInt

        static int getInt​(byte[] data,
                  int index)

      • getInt

        static int getInt​(int[] data,
                  long index)

      • getLong

        static long getLong​(byte[] data,
                    int index)

      • getLong

        static long getLong​(long[] data,
                    long index)

      • putByte

        static void putByte​(long address,
                    byte value)

      • putShort

        static void putShort​(long address,
                     short value)

      • putShortOrdered

        static void putShortOrdered​(long address,
                            short newValue)

      • putInt

        static void putInt​(long address,
                   int value)

      • putLong

        static void putLong​(long address,
                    long value)

      • putByte

        static void putByte​(byte[] data,
                    int index,
                    byte value)

      • putByte

        static void putByte​(java.lang.Object data,
                    long offset,
                    byte value)

      • putShort

        static void putShort​(byte[] data,
                     int index,
                     short value)

      • putInt

        static void putInt​(byte[] data,
                   int index,
                   int value)

      • putLong

        static void putLong​(byte[] data,
                    int index,
                    long value)

      • putObject

        static void putObject​(java.lang.Object o,
                      long offset,
                      java.lang.Object x)

      • copyMemory

        static void copyMemory​(long srcAddr,
                       long dstAddr,
                       long length)

      • copyMemoryWithSafePointPolling

        private static void copyMemoryWithSafePointPolling​(long srcAddr,
                                                   long dstAddr,
                                                   long length)

      • copyMemory

        static void copyMemory​(java.lang.Object src,
                       long srcOffset,
                       java.lang.Object dst,
                       long dstOffset,
                       long length)

      • copyMemoryWithSafePointPolling

        private static void copyMemoryWithSafePointPolling​(java.lang.Object src,
                                                   long srcOffset,
                                                   java.lang.Object dst,
                                                   long dstOffset,
                                                   long length)

      • setMemory

        static void setMemory​(long address,
                      long bytes,
                      byte value)

      • setMemory

        static void setMemory​(java.lang.Object o,
                      long offset,
                      long bytes,
                      byte value)

      • equals

        static boolean equals​(byte[] bytes1,
                      int startPos1,
                      byte[] bytes2,
                      int startPos2,
                      int length)

      • equalsConstantTime

        static int equalsConstantTime​(byte[] bytes1,
                              int startPos1,
                              byte[] bytes2,
                              int startPos2,
                              int length)

      • isZero

        static boolean isZero​(byte[] bytes,
                      int startPos,
                      int length)

      • hashCodeAscii

        static int hashCodeAscii​(byte[] bytes,
                         int startPos,
                         int length)

      • hashCodeAsciiCompute

        static int hashCodeAsciiCompute​(long value,
                                int hash)

      • hashCodeAsciiSanitize

        static int hashCodeAsciiSanitize​(int value)

      • hashCodeAsciiSanitize

        static int hashCodeAsciiSanitize​(short value)

      • hashCodeAsciiSanitize

        static int hashCodeAsciiSanitize​(byte value)

      • getClassLoader

        static java.lang.ClassLoader getClassLoader​(java.lang.Class<?> clazz)

      • getContextClassLoader

        static java.lang.ClassLoader getContextClassLoader()

      • getSystemClassLoader

        static java.lang.ClassLoader getSystemClassLoader()

      • addressSize

        static int addressSize()

      • allocateMemory

        static long allocateMemory​(long size)

      • freeMemory

        static void freeMemory​(long address)

      • reallocateMemory

        static long reallocateMemory​(long address,
                             long newSize)

      • isAndroid

        static boolean isAndroid()

      • isAndroid0

        private static boolean isAndroid0()

      • explicitTryReflectionSetAccessible0

        private static boolean explicitTryReflectionSetAccessible0()

      • isExplicitTryReflectionSetAccessible

        static boolean isExplicitTryReflectionSetAccessible()

      • javaVersion

        static int javaVersion()

      • javaVersion0

        private static int javaVersion0()

      • majorVersionFromJavaSpecificationVersion

        static int majorVersionFromJavaSpecificationVersion()

      • majorVersion

        static int majorVersion​(java.lang.String javaSpecVersion)