Convert errno to exception * @throw std::runtime_error / std::system_error * @return never */

Read from a file descriptor at a given offset asynchronously * @see pread(2) * @see io_uring_enter(2) IORING_OP_READ * @param iflags IO

Close a file descriptor asynchronously * @see close(2) * @see io_uring_enter(2) IORING_OP_CLOSE * @param iflags IOSQE_* flags * @r

Send a message on a socket asynchronously * @see send(2) * @see io_uring_enter(2) IORING_OP_SEND * @param iflags IOSQE_* flags * @

Splice data to/from a pipe asynchronously * @see splice(2) * @see io_uring_enter(2) IORING_OP_SPLICE * @param iflags IOSQE_* flags

Wait for an event on a file descriptor asynchronously * @see poll(2) * @see io_uring_enter(2) * @param iflags IOSQE_* flags * @ret

Receive a message from a socket asynchronously * @see recv(2) * @see io_uring_enter(2) IORING_OP_RECV * @param iflags IOSQE_* flags

Write to a file descriptor at a given offset asynchronously * @see pwrite(2) * @see io_uring_enter(2) IORING_OP_WRITE * @param iflags I

Accept a connection on a socket asynchronously * @see accept4(2) * @see io_uring_enter(2) IORING_OP_ACCEPT * @param iflags IOSQE_* flag

Get is the coroutine done */

Read data into a fixed buffer asynchronously * @see preadv2(2) * @see io_uring_enter(2) IORING_OP_READ_FIXED * @param buf_index the ind

Shut down part of a full-duplex connection asynchronously * @see shutdown(2) * @see io_uring_enter(2) IORING_OP_SHUTDOWN * @param iflag

Wait for specified duration asynchronously * @see io_uring_enter(2) IORING_OP_TIMEOUT * @param ts initial expiration, timespec * @param

Fill an iovec struct using buf & size */

Write data into a fixed buffer asynchronously * @see pwritev2(2) * @see io_uring_enter(2) IORING_OP_WRITE_FIXED * @param buf_index the

Initiate a connection on a socket asynchronously * @see connect(2) * @see io_uring_enter(2) IORING_OP_CONNECT * @param iflags IOSQE_* f

Synchronize a file's in-core state with storage device asynchronously * @see fsync(2) * @see io_uring_enter(2) IORING_OP_FSYNC * @param

Get the result hold by this task */

Serve response

Open and possibly create a file asynchronously * @see openat(2) * @see io_uring_enter(2) IORING_OP_OPENAT * @param iflags IOSQE_* flags

Register files for I/O * @param fds fds to register * @see io_uring_register(2) IORING_REGISTER_FILES */

Parse HTTP request header

Unregister all buffers * @see io_uring_register(2) IORING_UNREGISTER_BUFFERS */

Unregister all files * @see io_uring_register(2) IORING_UNREGISTER_FILES */

Enqueue a NOOP command, which eventually acts like pthread_yield when awaiting * @see io_uring_enter(2) IORING_OP_NOP * @param iflags IOSQE_

Init io_service / io_uring object * @see io_uring_setup(2) * @param entries Maximum sqe can be gotten without submitting * @param flags

Get a sqe pointer that can never be NULL * @param ring pointer to inited io_uring struct * @return pointer to `io_uring_sqe` struct (not NUL

Make a new name for a file asynchronously * @see linkat(2) * @see io_uring_enter(2) IORING_OP_LINKAT * @param iflags IOSQE_* flags

Create a directory asynchronously * @see mkdirat(2) * @see io_uring_enter(2) IORING_OP_MKDIRAT * @param iflags IOSQE_* flags * @re

Delete a name and possibly the file it refers to asynchronously * @see io_uring_enter(2) IORING_OP_MSG_RING * @param iflags IOSQE_* flags

Read data into multiple buffers asynchronously * @see preadv2(2) * @see io_uring_enter(2) IORING_OP_READV * @param iflags IOSQE_* flags

Update registered files * @see io_uring_register(2) IORING_REGISTER_FILES_UPDATE */

Change the name or location of a file asynchronously * @see renameat2(2) * @see io_uring_enter(2) IORING_OP_RENAMEAT * @param iflags IO

Send a message on a socket asynchronously * @see sendmsg(2) * @see io_uring_enter(2) IORING_OP_SENDMSG * @param iflags IOSQE_* flags

User MUST keep resolver alive before the operation is finished

TODO: use cancel_token to implement cancellation

Get file status asynchronously * @see statx(2) * @see io_uring_enter(2) IORING_OP_STATX * @param iflags IOSQE_* flags * @return a

Make a new name for a file asynchronously * @see symlinkat(2) * @see io_uring_enter(2) IORING_OP_SYMLINKAT * @param iflags IOSQE_* flag

Sync a file segment with disk asynchronously * @see sync_file_range(2) * @see io_uring_enter(2) IORING_OP_SYNC_FILE_RANGE * @param ifla

Duplicate pipe content asynchronously * @see tee(2) * @see io_uring_enter(2) IORING_OP_TEE * @param iflags IOSQE_* flags * @return

Delete a name and possibly the file it refers to asynchronously * @see unlinkat(2) * @see io_uring_enter(2) IORING_OP_UNLINKAT * @param

Write data into multiple buffers asynchronously * @see pwritev2(2) * @see io_uring_enter(2) IORING_OP_WRITEV * @param iflags IOSQE_* fl

Destroy io_service / io_uring object */