SIMPLE SOLUTIONS

IO_PREP_PREAD(3) - man page online | library functions

Set up asynchronous read.

Chapter
2009-06-10
io_prep_pread(3)                              Linux                              io_prep_pread(3)

NAME

io_prep_pread - Set up asynchronous read

SYNOPSYS

#include <errno.h> #include <libaio.h> inline void io_prep_pread(struct iocb *iocb, int fd, void *buf, size_t count, long long offse ↲ t); " struct iocb { void *data; unsigned key; short aio_lio_opcode; short aio_reqprio; int aio_fildes; };

DESCRIPTION

io_prep_pread is an inline convenience function designed to facilitate the initialization of the iocb for an asynchronous read operation. The first iocb->u.c.nbytes = count bytes of the file for which iocb->aio_fildes = fd is a descriptor are written to the buffer starting at iocb->u.c.buf = buf. Reading starts at the absolute position ioc->u.c.offset = offset in the file. This function returns immediately. To schedule the operation, the function io_submit must be called. Simultaneous asynchronous operations using the same iocb produce undefined results.

RETURN VALUES

None.

ERRORS

None.

SEE ALSO

io(3), io_cancel(3), io_fsync(3), io_getevents(3), io_prep_fsync(3), io_prep_pwrite(3), io_queue_init(3), io_queue_release(3), io_queue_run(3), io_queue_wait(3), io_set_call‐ back(3), io_submit(3), errno(3).
Linux 2.4 2009-06-10 io_prep_pread(3)
This manual Reference Other manuals
io_prep_pread(3) referred by io_fsync(3) | io_prep_fsync(3) | io_prep_pwrite(3) | io_queue_init(2) | io_queue_release(2) | io_queue_run(2) | io_queue_wait(2) | io_set_callback(3)
refer to errno(3) | io_fsync(3) | io_prep_fsync(3) | io_prep_pwrite(3)