31 int io_submit(aio_context_t ctx, long nr, iocb** iocbpp) {  in io_submit()
39 int io_cancel(aio_context_t ctx, iocb* iocbp, io_event* result) {  in io_cancel()
43 void io_prep(iocb* iocb, int fd, const void* buf, uint64_t count, int64_t offset, bool read) {  in io_prep()  argument
44     memset(iocb, 0, sizeof(*iocb));  in io_prep()
45     iocb->aio_fildes = fd;  in io_prep()
46     iocb->aio_lio_opcode = read ? IOCB_CMD_PREAD : IOCB_CMD_PWRITE;  in io_prep()
47     iocb->aio_reqprio = 0;  in io_prep()
48     iocb->aio_buf = reinterpret_cast<uint64_t>(buf);  in io_prep()
49     iocb->aio_nbytes = count;  in io_prep()
50     iocb->aio_offset = offset;  in io_prep()
53 void io_prep_pread(struct iocb* iocb, int fd, void* buf, size_t count, long long offset) {  in io_prep_pread()  argument
54     io_prep(iocb, fd, buf, count, offset, true);  in io_prep_pread()
57 void io_prep_pwrite(struct iocb* iocb, int fd, void* buf, size_t count, long long offset) {  in io_prep_pwrite()  argument
58     io_prep(iocb, fd, buf, count, offset, false);  in io_prep_pwrite()