Package io.netty.channel.uring

Class Native

java.lang.Object

io.netty.channel.uring.Native

final class Native
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) static class	Native.IoUringProbe
(package private) static class	Native.IoUringProbeOp

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static short	AF_INET
(package private) static short	AF_INET6
(package private) static short	AF_UNIX
(package private) static int	CMSG_LEN
(package private) static int	CMSG_LEN_FOR_FD
(package private) static int	CMSG_OFFSETOF_CMSG_LEN
(package private) static int	CMSG_OFFSETOF_CMSG_LEVEL
(package private) static int	CMSG_OFFSETOF_CMSG_TYPE
(package private) static int	CMSG_SPACE
(package private) static int	CMSG_SPACE_FOR_FD
(package private) static int	CQE_SIZE
(package private) static int	CQE32_SIZE
(package private) static int	ERRNO_ECANCELED_NEGATIVE
(package private) static int	ERRNO_ETIME_NEGATIVE
(package private) static int	ERRNO_NOBUFS_NEGATIVE
(package private) static int	IN_ADDRESS_OFFSETOF_S_ADDR
(package private) static int	IN6_ADDRESS_OFFSETOF_S6_ADDR
(package private) static int	IO_URING_BUFFER_RING_TAIL
(package private) static int	IO_URING_OP_SUPPORTED
(package private) static short	IORING_ACCEPT_DONTWAIT
(package private) static short	IORING_ACCEPT_MULTISHOT
(package private) static short	IORING_ACCEPT_POLL_FIRST
(package private) static int	IORING_CQE_BUFFER_SHIFT
(package private) static int	IORING_CQE_F_32
(package private) static int	IORING_CQE_F_BUF_MORE
(package private) static int	IORING_CQE_F_BUFFER
(package private) static int	IORING_CQE_F_MORE
(package private) static int	IORING_CQE_F_NOTIF
(package private) static int	IORING_CQE_F_SKIP
(package private) static int	IORING_CQE_F_SOCK_NONEMPTY
(package private) static int	IORING_ENTER_GETEVENTS
(package private) static int	IORING_ENTER_NO_IOWAIT
(package private) static int	IORING_ENTER_REGISTERED_RING
(package private) static int	IORING_FEAT_NO_IOWAIT
(package private) static int	IORING_FEAT_NODROP
(package private) static int	IORING_FEAT_RECVSEND_BUNDLE
(package private) static int	IORING_FEAT_SUBMIT_STABLE
(package private) static short	IORING_NOP_CQE32
(package private) static int	IORING_NOTIF_USAGE_ZC_COPIED
(package private) static byte	IORING_OP_ACCEPT
(package private) static byte	IORING_OP_ASYNC_CANCEL
(package private) static byte	IORING_OP_BIND
(package private) static byte	IORING_OP_CLOSE
(package private) static byte	IORING_OP_CONNECT
(package private) static byte	IORING_OP_EPOLL_CTL
(package private) static byte	IORING_OP_FADVISE
(package private) static byte	IORING_OP_FALLOCATE
(package private) static byte	IORING_OP_FGETXATTR
(package private) static byte	IORING_OP_FILES_UPDATE
(package private) static byte	IORING_OP_FIXED_FD_INSTALL
(package private) static byte	IORING_OP_FSETXATTR
(package private) static byte	IORING_OP_FSYNC
(package private) static byte	IORING_OP_FTRUNCATE
(package private) static byte	IORING_OP_FUTEX_WAIT
(package private) static byte	IORING_OP_FUTEX_WAITV
(package private) static byte	IORING_OP_FUTEX_WAKE
(package private) static byte	IORING_OP_GETXATTR
(package private) static byte	IORING_OP_LINK_TIMEOUT
(package private) static byte	IORING_OP_LINKAT
(package private) static byte	IORING_OP_MADVISE
(package private) static byte	IORING_OP_MKDIRAT
(package private) static byte	IORING_OP_MSG_RING
(package private) static byte	IORING_OP_NOP
(package private) static byte	IORING_OP_OPENAT
(package private) static byte	IORING_OP_OPENAT2
(package private) static byte	IORING_OP_POLL_ADD
(package private) static byte	IORING_OP_POLL_REMOVE
(package private) static byte	IORING_OP_PROVIDE_BUFFERS
(package private) static byte	IORING_OP_READ
(package private) static byte	IORING_OP_READ_FIXED
(package private) static byte	IORING_OP_READ_MULTISHOT
(package private) static byte	IORING_OP_READV
(package private) static byte	IORING_OP_RECV
(package private) static byte	IORING_OP_RECVMSG
(package private) static byte	IORING_OP_REMOVE_BUFFERS
(package private) static byte	IORING_OP_RENAMEAT
(package private) static byte	IORING_OP_SEND
(package private) static byte	IORING_OP_SEND_ZC
(package private) static byte	IORING_OP_SENDMSG
(package private) static byte	IORING_OP_SENDMSG_ZC
(package private) static byte	IORING_OP_SETXATTR
(package private) static byte	IORING_OP_SHUTDOWN
(package private) static byte	IORING_OP_SOCKET
(package private) static byte	IORING_OP_SPLICE
(package private) static byte	IORING_OP_STATX
(package private) static byte	IORING_OP_SYMLINKAT
(package private) static byte	IORING_OP_SYNC_FILE_RANGE
(package private) static byte	IORING_OP_TEE
(package private) static byte	IORING_OP_TIMEOUT
(package private) static byte	IORING_OP_TIMEOUT_REMOVE
(package private) static byte	IORING_OP_UNLINKAT
(package private) static byte	IORING_OP_URING_CMD
(package private) static byte	IORING_OP_WAITID
(package private) static byte	IORING_OP_WRITE
(package private) static byte	IORING_OP_WRITE_FIXED
(package private) static byte	IORING_OP_WRITEV
(package private) static short	IORING_POLL_ADD_MULTI
(package private) static short	IORING_RECV_MULTISHOT
(package private) static short	IORING_RECVSEND_BUNDLE
(package private) static short	IORING_RECVSEND_POLL_FIRST
(package private) static short	IORING_SEND_ZC_REPORT_USAGE
(package private) static int	IORING_SETUP_CLAMP
(package private) static int	IORING_SETUP_CQE_MIXED
(package private) static int	IORING_SETUP_CQE32
(package private) static int	IORING_SETUP_CQSIZE
(package private) static int	IORING_SETUP_DEFER_TASKRUN
(package private) static int	IORING_SETUP_NO_SQARRAY
(package private) static int	IORING_SETUP_R_DISABLED
(package private) static int	IORING_SETUP_SINGLE_ISSUER
(package private) static int	IORING_SETUP_SUBMIT_ALL
(package private) static int	IORING_SETUP_TASKRUN_FLAG
(package private) static int	IORING_SQ_CQ_OVERFLOW
(package private) static int	IORING_SQ_NEED_WAKEUP
(package private) static int	IORING_SQ_TASKRUN
(package private) static int	IOSQE_ASYNC
(package private) static int	IOSQE_BUFFER_SELECT
(package private) static int	IOSQE_CQE_SKIP_SUCCESS
(package private) static int	IOSQE_HARDLINK
(package private) static int	IOSQE_IO_DRAIN
(package private) static int	IOSQE_LINK
(package private) static int	IOU_PBUF_RING_INC
(package private) static int	IOURING_BUFFER_OFFSETOF_ADDR
(package private) static int	IOURING_BUFFER_OFFSETOF_BID
(package private) static int	IOURING_BUFFER_OFFSETOF_LEN
(package private) static int	IOVEC_OFFSETOF_IOV_BASE
(package private) static int	IOVEC_OFFSETOF_IOV_LEN
(package private) static boolean	IS_SUPPORTING_TCP_FASTOPEN_CLIENT	tcp_fastopen client mode enabled state.
(package private) static boolean	IS_SUPPORTING_TCP_FASTOPEN_SERVER	tcp_fastopen server mode enabled state.
private static InternalLogger	logger
(package private) static int	MAX_SKB_FRAGS
(package private) static int	MAX_SUN_PATH_LEN
(package private) static int	MSG_CONTROL_LEN_FOR_FD
(package private) static int	MSG_DONTWAIT
(package private) static int	MSG_FASTOPEN
(package private) static int	MSGHDR_OFFSETOF_MSG_CONTROL
(package private) static int	MSGHDR_OFFSETOF_MSG_CONTROLLEN
(package private) static int	MSGHDR_OFFSETOF_MSG_FLAGS
(package private) static int	MSGHDR_OFFSETOF_MSG_IOV
(package private) static int	MSGHDR_OFFSETOF_MSG_IOVLEN
(package private) static int	MSGHDR_OFFSETOF_MSG_NAME
(package private) static int	MSGHDR_OFFSETOF_MSG_NAMELEN
(package private) static int	PAGE_SIZE
(package private) static int	POLLIN
(package private) static int	POLLOUT
(package private) static int	POLLRDHUP
private static int[]	REQUIRED_IORING_OPS
(package private) static int	SCM_RIGHTS
(package private) static int	SIZEOF_IOURING_BUF
(package private) static int	SIZEOF_IOVEC
(package private) static int	SIZEOF_MSGHDR
(package private) static int	SIZEOF_SIZE_T
(package private) static int	SIZEOF_SOCKADDR_IN
(package private) static int	SIZEOF_SOCKADDR_IN6
(package private) static int	SIZEOF_SOCKADDR_STORAGE
(package private) static int	SIZEOF_SOCKADDR_UN
(package private) static int	SOCK_CLOEXEC
(package private) static int	SOCK_NONBLOCK
(package private) static int	SOCKADDR_IN_OFFSETOF_SIN_ADDR
(package private) static int	SOCKADDR_IN_OFFSETOF_SIN_FAMILY
(package private) static int	SOCKADDR_IN_OFFSETOF_SIN_PORT
(package private) static int	SOCKADDR_IN6_OFFSETOF_SIN6_ADDR
(package private) static int	SOCKADDR_IN6_OFFSETOF_SIN6_FAMILY
(package private) static int	SOCKADDR_IN6_OFFSETOF_SIN6_FLOWINFO
(package private) static int	SOCKADDR_IN6_OFFSETOF_SIN6_PORT
(package private) static int	SOCKADDR_IN6_OFFSETOF_SIN6_SCOPE_ID
(package private) static int	SOCKADDR_UN_OFFSETOF_SUN_FAMILY
(package private) static int	SOCKADDR_UN_OFFSETOF_SUN_PATH
(package private) static int	SOL_SOCKET
(package private) static int	SOL_UDP
(package private) static int	SPLICE_F_MOVE
private static int	TCP_FASTOPEN_MODE
private static int	TFO_ENABLED_CLIENT_MASK
private static int	TFO_ENABLED_SERVER_MASK
(package private) static int	UDP_SEGMENT

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Native()

Method Summary

Modifier and Type	Method	Description
private static int	blockingEventFd()
(package private) static void	checkAllIOSupported(Native.IoUringProbe probe)
(package private) static void	checkKernelVersion(java.lang.String kernelVersion)
private static boolean	checkKernelVersion(java.lang.String kernelVersion, int major, int minor)
(package private) static long	cmsghdrData(long hdrAddr)
(package private) static int	createFile(java.lang.String name)
(package private) static RingBuffer	createRingBuffer(int ringSize, int setupFlags)
(package private) static RingBuffer	createRingBuffer(int ringSize, int cqeSize, int setupFlags)
(package private) static void	eventFdWrite(int fd, long value)
(package private) static int	getFd(DefaultFileRegion fileChannel)
private static int	getFd0(java.lang.Object fileChannel)
(package private) static int	ioUringBufRingSize(int entries)
(package private) static int	ioUringEnter(int ringFd, int toSubmit, int minComplete, int flags)
(package private) static void	ioUringExit(long submissionQueueArrayAddress, int submissionQueueRingEntries, long submissionQueueRingAddress, int submissionQueueRingSize, long completionQueueRingAddress, int completionQueueRingSize, int ringFd, int enterRingFd)
(package private) static Native.IoUringProbe	ioUringProbe(int ringfd)
(package private) static boolean	ioUringProbe(Native.IoUringProbe probe, int[] ops)
private static int[]	ioUringProbe0(int ringFd)
(package private) static long	ioUringRegisterBufRing(int ringFd, int entries, short bufferGroup, int flags)
(package private) static int	ioUringRegisterEnableRings(int ringFd)
(package private) static int	ioUringRegisterIoWqMaxWorkers(int ringFd, int maxBoundedValue, int maxUnboundedValue)
(package private) static int	ioUringRegisterRingFds(int ringFds)
private static long[]	ioUringSetup(int entries, int cqeSize, int setupFlags)
(package private) static boolean	ioUringSetupSupportsFlags(int setupFlags)
(package private) static int	ioUringUnRegisterBufRing(int ringFd, long ioUringBufRingAddr, int entries, short bufferGroupId)
(package private) static boolean	isAcceptMultishotSupported(Native.IoUringProbe probe)
(package private) static boolean	isCqeFSockNonEmptySupported(Native.IoUringProbe probe)
(package private) static boolean	isPollAddMultiShotSupported(Native.IoUringProbe probe)
(package private) static boolean	isRecvMultishotSupported()
(package private) static boolean	isRegisterBufferRingSupported(int ringFd, int flags)
(package private) static boolean	isRegisterIoWqWorkerSupported(int ringFd)	check current kernel version whether support io_uring_register_io_wq_worker Available since 5.15.
(package private) static boolean	isSendmsgZcSupported(Native.IoUringProbe probe)
(package private) static boolean	isSendZcSupported(Native.IoUringProbe probe)
(package private) static boolean	isSpliceSupported(Native.IoUringProbe probe)
(package private) static boolean	isUnixDomainSocketInqSupported()
(package private) static java.lang.String	kernelVersion()
private static void	loadNativeLibrary()
(package private) static FileDescriptor	newBlockingEventFd()
(package private) static java.lang.String	opToStr(byte op)
private static int	registerUnix()
(package private) static int	setupFlags(boolean useSingleIssuer)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

private static final InternalLogger logger

SOCK_NONBLOCK

static final int SOCK_NONBLOCK

SOCK_CLOEXEC

static final int SOCK_CLOEXEC

AF_INET

static final short AF_INET

AF_INET6

static final short AF_INET6

AF_UNIX

static final short AF_UNIX

SIZEOF_SOCKADDR_STORAGE

static final int SIZEOF_SOCKADDR_STORAGE

SIZEOF_SOCKADDR_UN

static final int SIZEOF_SOCKADDR_UN

SOCKADDR_UN_OFFSETOF_SUN_FAMILY

static final int SOCKADDR_UN_OFFSETOF_SUN_FAMILY

SOCKADDR_UN_OFFSETOF_SUN_PATH

static final int SOCKADDR_UN_OFFSETOF_SUN_PATH

MAX_SUN_PATH_LEN

static final int MAX_SUN_PATH_LEN

SIZEOF_SOCKADDR_IN

static final int SIZEOF_SOCKADDR_IN

SIZEOF_SOCKADDR_IN6

static final int SIZEOF_SOCKADDR_IN6

SOCKADDR_IN_OFFSETOF_SIN_FAMILY

static final int SOCKADDR_IN_OFFSETOF_SIN_FAMILY

SOCKADDR_IN_OFFSETOF_SIN_PORT

static final int SOCKADDR_IN_OFFSETOF_SIN_PORT

SOCKADDR_IN_OFFSETOF_SIN_ADDR

static final int SOCKADDR_IN_OFFSETOF_SIN_ADDR

IN_ADDRESS_OFFSETOF_S_ADDR

static final int IN_ADDRESS_OFFSETOF_S_ADDR

SOCKADDR_IN6_OFFSETOF_SIN6_FAMILY

static final int SOCKADDR_IN6_OFFSETOF_SIN6_FAMILY

SOCKADDR_IN6_OFFSETOF_SIN6_PORT

static final int SOCKADDR_IN6_OFFSETOF_SIN6_PORT

SOCKADDR_IN6_OFFSETOF_SIN6_FLOWINFO

static final int SOCKADDR_IN6_OFFSETOF_SIN6_FLOWINFO

SOCKADDR_IN6_OFFSETOF_SIN6_ADDR

static final int SOCKADDR_IN6_OFFSETOF_SIN6_ADDR

SOCKADDR_IN6_OFFSETOF_SIN6_SCOPE_ID

static final int SOCKADDR_IN6_OFFSETOF_SIN6_SCOPE_ID

IN6_ADDRESS_OFFSETOF_S6_ADDR

static final int IN6_ADDRESS_OFFSETOF_S6_ADDR

SIZEOF_SIZE_T

static final int SIZEOF_SIZE_T

SIZEOF_IOVEC

static final int SIZEOF_IOVEC

CMSG_SPACE

static final int CMSG_SPACE

CMSG_SPACE_FOR_FD

static final int CMSG_SPACE_FOR_FD

CMSG_LEN

static final int CMSG_LEN

CMSG_LEN_FOR_FD

static final int CMSG_LEN_FOR_FD

MSG_CONTROL_LEN_FOR_FD

static final int MSG_CONTROL_LEN_FOR_FD

CMSG_OFFSETOF_CMSG_LEN

static final int CMSG_OFFSETOF_CMSG_LEN

CMSG_OFFSETOF_CMSG_LEVEL

static final int CMSG_OFFSETOF_CMSG_LEVEL

CMSG_OFFSETOF_CMSG_TYPE

static final int CMSG_OFFSETOF_CMSG_TYPE

IO_URING_BUFFER_RING_TAIL

static final int IO_URING_BUFFER_RING_TAIL

IOVEC_OFFSETOF_IOV_BASE

static final int IOVEC_OFFSETOF_IOV_BASE

IOVEC_OFFSETOF_IOV_LEN

static final int IOVEC_OFFSETOF_IOV_LEN

SIZEOF_MSGHDR

static final int SIZEOF_MSGHDR

MSGHDR_OFFSETOF_MSG_NAME

static final int MSGHDR_OFFSETOF_MSG_NAME

MSGHDR_OFFSETOF_MSG_NAMELEN

static final int MSGHDR_OFFSETOF_MSG_NAMELEN

MSGHDR_OFFSETOF_MSG_IOV

static final int MSGHDR_OFFSETOF_MSG_IOV

MSGHDR_OFFSETOF_MSG_IOVLEN

static final int MSGHDR_OFFSETOF_MSG_IOVLEN

MSGHDR_OFFSETOF_MSG_CONTROL

static final int MSGHDR_OFFSETOF_MSG_CONTROL

MSGHDR_OFFSETOF_MSG_CONTROLLEN

static final int MSGHDR_OFFSETOF_MSG_CONTROLLEN

MSGHDR_OFFSETOF_MSG_FLAGS

static final int MSGHDR_OFFSETOF_MSG_FLAGS

POLLIN

static final int POLLIN

POLLOUT

static final int POLLOUT

POLLRDHUP

static final int POLLRDHUP

ERRNO_ECANCELED_NEGATIVE

static final int ERRNO_ECANCELED_NEGATIVE

ERRNO_ETIME_NEGATIVE

static final int ERRNO_ETIME_NEGATIVE

ERRNO_NOBUFS_NEGATIVE

static final int ERRNO_NOBUFS_NEGATIVE

PAGE_SIZE

static final int PAGE_SIZE

MAX_SKB_FRAGS

static final int MAX_SKB_FRAGS

SIZEOF_IOURING_BUF

static final int SIZEOF_IOURING_BUF

IOURING_BUFFER_OFFSETOF_ADDR

static final int IOURING_BUFFER_OFFSETOF_ADDR

IOURING_BUFFER_OFFSETOF_LEN

static final int IOURING_BUFFER_OFFSETOF_LEN

IOURING_BUFFER_OFFSETOF_BID

static final int IOURING_BUFFER_OFFSETOF_BID

IORING_OP_NOP

static final byte IORING_OP_NOP

See Also:

Constant Field Values

IORING_OP_READV

static final byte IORING_OP_READV

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Constant Field Values

IORING_OP_WRITEV

static final byte IORING_OP_WRITEV

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Constant Field Values

IORING_OP_FSYNC

static final byte IORING_OP_FSYNC

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Constant Field Values

IORING_OP_READ_FIXED

static final byte IORING_OP_READ_FIXED

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Constant Field Values

IORING_OP_WRITE_FIXED

static final byte IORING_OP_WRITE_FIXED

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Constant Field Values

IORING_OP_POLL_ADD

static final byte IORING_OP_POLL_ADD

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Constant Field Values

IORING_OP_POLL_REMOVE

static final byte IORING_OP_POLL_REMOVE

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Constant Field Values

IORING_OP_SYNC_FILE_RANGE

static final byte IORING_OP_SYNC_FILE_RANGE

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Constant Field Values

IORING_OP_SENDMSG

static final byte IORING_OP_SENDMSG

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Constant Field Values

IORING_OP_RECVMSG

static final byte IORING_OP_RECVMSG

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Constant Field Values

IORING_OP_TIMEOUT

static final byte IORING_OP_TIMEOUT

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Constant Field Values

IORING_OP_TIMEOUT_REMOVE

static final byte IORING_OP_TIMEOUT_REMOVE

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Constant Field Values

IORING_OP_ACCEPT

static final byte IORING_OP_ACCEPT

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Constant Field Values

IORING_OP_ASYNC_CANCEL

static final byte IORING_OP_ASYNC_CANCEL

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Constant Field Values

IORING_OP_LINK_TIMEOUT

static final byte IORING_OP_LINK_TIMEOUT

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Constant Field Values

IORING_OP_CONNECT

static final byte IORING_OP_CONNECT

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Constant Field Values

IORING_OP_FALLOCATE

static final byte IORING_OP_FALLOCATE

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Constant Field Values

IORING_OP_OPENAT

static final byte IORING_OP_OPENAT

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Constant Field Values

IORING_OP_CLOSE

static final byte IORING_OP_CLOSE

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Constant Field Values

IORING_OP_FILES_UPDATE

static final byte IORING_OP_FILES_UPDATE

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Constant Field Values

IORING_OP_STATX

static final byte IORING_OP_STATX

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Constant Field Values

IORING_OP_READ

static final byte IORING_OP_READ

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Constant Field Values

IORING_OP_WRITE

static final byte IORING_OP_WRITE

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Constant Field Values

IORING_OP_FADVISE

static final byte IORING_OP_FADVISE

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Constant Field Values

IORING_OP_MADVISE

static final byte IORING_OP_MADVISE

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Constant Field Values

IORING_OP_SEND

static final byte IORING_OP_SEND

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Constant Field Values

IORING_OP_RECV

static final byte IORING_OP_RECV

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Constant Field Values

IORING_OP_OPENAT2

static final byte IORING_OP_OPENAT2

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Constant Field Values

IORING_OP_EPOLL_CTL

static final byte IORING_OP_EPOLL_CTL

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Constant Field Values

IORING_OP_SPLICE

static final byte IORING_OP_SPLICE

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Constant Field Values

IORING_OP_PROVIDE_BUFFERS

static final byte IORING_OP_PROVIDE_BUFFERS

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Constant Field Values

IORING_OP_REMOVE_BUFFERS

static final byte IORING_OP_REMOVE_BUFFERS

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Constant Field Values

IORING_OP_TEE

static final byte IORING_OP_TEE

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Constant Field Values

IORING_OP_SHUTDOWN

static final byte IORING_OP_SHUTDOWN

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Constant Field Values

IORING_OP_RENAMEAT

static final byte IORING_OP_RENAMEAT

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Constant Field Values

IORING_OP_UNLINKAT

static final byte IORING_OP_UNLINKAT

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Constant Field Values

IORING_OP_MKDIRAT

static final byte IORING_OP_MKDIRAT

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Constant Field Values

IORING_OP_SYMLINKAT

static final byte IORING_OP_SYMLINKAT

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Constant Field Values

IORING_OP_LINKAT

static final byte IORING_OP_LINKAT

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Constant Field Values

IORING_OP_MSG_RING

static final byte IORING_OP_MSG_RING

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Constant Field Values

IORING_OP_FSETXATTR

static final byte IORING_OP_FSETXATTR

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Constant Field Values

IORING_OP_SETXATTR

static final byte IORING_OP_SETXATTR

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Constant Field Values

IORING_OP_FGETXATTR

static final byte IORING_OP_FGETXATTR

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Constant Field Values

IORING_OP_GETXATTR

static final byte IORING_OP_GETXATTR

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Constant Field Values

IORING_OP_SOCKET

static final byte IORING_OP_SOCKET

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Constant Field Values

IORING_OP_URING_CMD

static final byte IORING_OP_URING_CMD

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Constant Field Values

IORING_OP_SEND_ZC

static final byte IORING_OP_SEND_ZC

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Constant Field Values

IORING_OP_SENDMSG_ZC

static final byte IORING_OP_SENDMSG_ZC

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Constant Field Values

IORING_OP_READ_MULTISHOT

static final byte IORING_OP_READ_MULTISHOT

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Constant Field Values

IORING_OP_WAITID

static final byte IORING_OP_WAITID

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Constant Field Values

IORING_OP_FUTEX_WAIT

static final byte IORING_OP_FUTEX_WAIT

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Constant Field Values

IORING_OP_FUTEX_WAKE

static final byte IORING_OP_FUTEX_WAKE

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Constant Field Values

IORING_OP_FUTEX_WAITV

static final byte IORING_OP_FUTEX_WAITV

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Constant Field Values

IORING_OP_FIXED_FD_INSTALL

static final byte IORING_OP_FIXED_FD_INSTALL

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Constant Field Values

IORING_OP_FTRUNCATE

static final byte IORING_OP_FTRUNCATE

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Constant Field Values

IORING_OP_BIND

static final byte IORING_OP_BIND

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Constant Field Values

IORING_CQE_F_BUFFER

static final int IORING_CQE_F_BUFFER

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Constant Field Values

IORING_CQE_F_MORE

static final int IORING_CQE_F_MORE

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Constant Field Values

IORING_CQE_F_SOCK_NONEMPTY

static final int IORING_CQE_F_SOCK_NONEMPTY

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Constant Field Values

IORING_CQE_F_NOTIF

static final int IORING_CQE_F_NOTIF

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Constant Field Values

IORING_CQE_F_BUF_MORE

static final int IORING_CQE_F_BUF_MORE

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Constant Field Values

IORING_CQE_F_SKIP

static final int IORING_CQE_F_SKIP

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Constant Field Values

IORING_CQE_F_32

static final int IORING_CQE_F_32

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Constant Field Values

IORING_SETUP_CQSIZE

static final int IORING_SETUP_CQSIZE

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Constant Field Values

IORING_SETUP_CLAMP

static final int IORING_SETUP_CLAMP

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Constant Field Values

IORING_SETUP_R_DISABLED

static final int IORING_SETUP_R_DISABLED

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Constant Field Values

IORING_SETUP_SUBMIT_ALL

static final int IORING_SETUP_SUBMIT_ALL

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Constant Field Values

IORING_SETUP_CQE32

static final int IORING_SETUP_CQE32

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Constant Field Values

IORING_SETUP_TASKRUN_FLAG

static final int IORING_SETUP_TASKRUN_FLAG

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Constant Field Values

IORING_SETUP_SINGLE_ISSUER

static final int IORING_SETUP_SINGLE_ISSUER

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Constant Field Values

IORING_SETUP_DEFER_TASKRUN

static final int IORING_SETUP_DEFER_TASKRUN

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Constant Field Values

IORING_SETUP_NO_SQARRAY

static final int IORING_SETUP_NO_SQARRAY

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Constant Field Values

IORING_SETUP_CQE_MIXED

static final int IORING_SETUP_CQE_MIXED

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Constant Field Values

IORING_CQE_BUFFER_SHIFT

static final int IORING_CQE_BUFFER_SHIFT

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Constant Field Values

IORING_POLL_ADD_MULTI

static final short IORING_POLL_ADD_MULTI

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Constant Field Values

IORING_RECVSEND_POLL_FIRST

static final short IORING_RECVSEND_POLL_FIRST

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Constant Field Values

IORING_RECVSEND_BUNDLE

static final short IORING_RECVSEND_BUNDLE

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Constant Field Values

IORING_RECV_MULTISHOT

static final short IORING_RECV_MULTISHOT

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Constant Field Values

IORING_SEND_ZC_REPORT_USAGE

static final short IORING_SEND_ZC_REPORT_USAGE

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Constant Field Values

IORING_NOTIF_USAGE_ZC_COPIED

static final int IORING_NOTIF_USAGE_ZC_COPIED

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Constant Field Values

IORING_ACCEPT_MULTISHOT

static final short IORING_ACCEPT_MULTISHOT

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Constant Field Values

IORING_ACCEPT_DONTWAIT

static final short IORING_ACCEPT_DONTWAIT

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Constant Field Values

IORING_ACCEPT_POLL_FIRST

static final short IORING_ACCEPT_POLL_FIRST

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Constant Field Values

IORING_NOP_CQE32

static final short IORING_NOP_CQE32

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Constant Field Values

IORING_FEAT_NODROP

static final int IORING_FEAT_NODROP

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Constant Field Values

IORING_FEAT_SUBMIT_STABLE

static final int IORING_FEAT_SUBMIT_STABLE

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Constant Field Values

IORING_FEAT_RECVSEND_BUNDLE

static final int IORING_FEAT_RECVSEND_BUNDLE

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Constant Field Values

IORING_FEAT_NO_IOWAIT

static final int IORING_FEAT_NO_IOWAIT

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Constant Field Values

IORING_SQ_NEED_WAKEUP

static final int IORING_SQ_NEED_WAKEUP

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Constant Field Values

IORING_SQ_CQ_OVERFLOW

static final int IORING_SQ_CQ_OVERFLOW

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Constant Field Values

IORING_SQ_TASKRUN

static final int IORING_SQ_TASKRUN

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Constant Field Values

SPLICE_F_MOVE

static final int SPLICE_F_MOVE

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Constant Field Values

IOU_PBUF_RING_INC

static final int IOU_PBUF_RING_INC

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Constant Field Values

IO_URING_OP_SUPPORTED

static final int IO_URING_OP_SUPPORTED

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Constant Field Values

CQE_SIZE

static final int CQE_SIZE

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Constant Field Values

CQE32_SIZE

static final int CQE32_SIZE

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Constant Field Values

IORING_ENTER_GETEVENTS

static final int IORING_ENTER_GETEVENTS

IORING_ENTER_REGISTERED_RING

static final int IORING_ENTER_REGISTERED_RING

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Constant Field Values

IORING_ENTER_NO_IOWAIT

static final int IORING_ENTER_NO_IOWAIT

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Constant Field Values

IOSQE_ASYNC

static final int IOSQE_ASYNC

IOSQE_LINK

static final int IOSQE_LINK

IOSQE_HARDLINK

static final int IOSQE_HARDLINK

IOSQE_IO_DRAIN

static final int IOSQE_IO_DRAIN

IOSQE_BUFFER_SELECT

static final int IOSQE_BUFFER_SELECT

IOSQE_CQE_SKIP_SUCCESS

static final int IOSQE_CQE_SKIP_SUCCESS

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Constant Field Values

MSG_DONTWAIT

static final int MSG_DONTWAIT

MSG_FASTOPEN

static final int MSG_FASTOPEN

SOL_UDP

static final int SOL_UDP

SOL_SOCKET

static final int SOL_SOCKET

UDP_SEGMENT

static final int UDP_SEGMENT

SCM_RIGHTS

static final int SCM_RIGHTS

TFO_ENABLED_CLIENT_MASK

private static final int TFO_ENABLED_CLIENT_MASK

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Constant Field Values

TFO_ENABLED_SERVER_MASK

private static final int TFO_ENABLED_SERVER_MASK

See Also:

Constant Field Values

TCP_FASTOPEN_MODE

private static final int TCP_FASTOPEN_MODE

IS_SUPPORTING_TCP_FASTOPEN_CLIENT

static final boolean IS_SUPPORTING_TCP_FASTOPEN_CLIENT

tcp_fastopen client mode enabled state.

IS_SUPPORTING_TCP_FASTOPEN_SERVER

static final boolean IS_SUPPORTING_TCP_FASTOPEN_SERVER

tcp_fastopen server mode enabled state.

REQUIRED_IORING_OPS

private static final int[] REQUIRED_IORING_OPS

Constructor Detail

Native

private Native()

Method Detail

opToStr

static java.lang.String opToStr(byte op)

setupFlags

static int setupFlags(boolean useSingleIssuer)

createRingBuffer

static RingBuffer createRingBuffer(int ringSize,
                                   int setupFlags)

createRingBuffer

static RingBuffer createRingBuffer(int ringSize,
                                   int cqeSize,
                                   int setupFlags)

checkAllIOSupported

static void checkAllIOSupported(Native.IoUringProbe probe)

isRecvMultishotSupported

static boolean isRecvMultishotSupported()

isAcceptMultishotSupported

static boolean isAcceptMultishotSupported(Native.IoUringProbe probe)

isCqeFSockNonEmptySupported

static boolean isCqeFSockNonEmptySupported(Native.IoUringProbe probe)

isSpliceSupported

static boolean isSpliceSupported(Native.IoUringProbe probe)

isPollAddMultiShotSupported

static boolean isPollAddMultiShotSupported(Native.IoUringProbe probe)

isSendZcSupported

static boolean isSendZcSupported(Native.IoUringProbe probe)

isSendmsgZcSupported

static boolean isSendmsgZcSupported(Native.IoUringProbe probe)

isRegisterIoWqWorkerSupported

static boolean isRegisterIoWqWorkerSupported(int ringFd)

check current kernel version whether support io_uring_register_io_wq_worker Available since 5.15.

Returns:

true if support io_uring_register_io_wq_worker

isRegisterBufferRingSupported

static boolean isRegisterBufferRingSupported(int ringFd,
                                             int flags)

checkKernelVersion

static void checkKernelVersion(java.lang.String kernelVersion)

checkKernelVersion

private static boolean checkKernelVersion(java.lang.String kernelVersion,
                                          int major,
                                          int minor)

ioUringProbe

static boolean ioUringProbe(Native.IoUringProbe probe,
                            int[] ops)

ioUringSetupSupportsFlags

static boolean ioUringSetupSupportsFlags(int setupFlags)

isUnixDomainSocketInqSupported

static boolean isUnixDomainSocketInqSupported()

ioUringSetup

private static long[] ioUringSetup(int entries,
                                   int cqeSize,
                                   int setupFlags)

ioUringProbe

static Native.IoUringProbe ioUringProbe(int ringfd)

ioUringProbe0

private static int[] ioUringProbe0(int ringFd)

ioUringRegisterIoWqMaxWorkers

static int ioUringRegisterIoWqMaxWorkers(int ringFd,
                                         int maxBoundedValue,
                                         int maxUnboundedValue)

ioUringRegisterEnableRings

static int ioUringRegisterEnableRings(int ringFd)

ioUringRegisterRingFds

static int ioUringRegisterRingFds(int ringFds)

ioUringRegisterBufRing

static long ioUringRegisterBufRing(int ringFd,
                                   int entries,
                                   short bufferGroup,
                                   int flags)

ioUringUnRegisterBufRing

static int ioUringUnRegisterBufRing(int ringFd,
                                    long ioUringBufRingAddr,
                                    int entries,
                                    short bufferGroupId)

ioUringBufRingSize

static int ioUringBufRingSize(int entries)

ioUringEnter

static int ioUringEnter(int ringFd,
                        int toSubmit,
                        int minComplete,
                        int flags)

eventFdWrite

static void eventFdWrite(int fd,
                         long value)

getFd

static int getFd(DefaultFileRegion fileChannel)

getFd0

private static int getFd0(java.lang.Object fileChannel)

newBlockingEventFd

static FileDescriptor newBlockingEventFd()

ioUringExit

static void ioUringExit(long submissionQueueArrayAddress,
                        int submissionQueueRingEntries,
                        long submissionQueueRingAddress,
                        int submissionQueueRingSize,
                        long completionQueueRingAddress,
                        int completionQueueRingSize,
                        int ringFd,
                        int enterRingFd)

blockingEventFd

private static int blockingEventFd()

createFile

static int createFile(java.lang.String name)

registerUnix

private static int registerUnix()

cmsghdrData

static long cmsghdrData(long hdrAddr)

kernelVersion

static java.lang.String kernelVersion()

loadNativeLibrary

private static void loadNativeLibrary()