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io_prep_pwrite

Section: Linux (3)
Updated: 2002-09-12
Index Return to Main Contents
 

NAME

io_prep_pwrite - Set up iocb for asynchronous writes  

SYNOPSYS

#include <errno.h>

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

DESCRIPTION

io_prep_write is a convenicence function for setting up parallel writes.

The first

iocb->u.c.nbytes = count
bytes of the file for which
iocb->aio_fildes = fd
is a descriptor are written from the buffer starting at
iocb->u.c.buf = buf

Writing 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_pread(3), io_queue_init(3), io_queue_release(3), io_queue_run(3), io_queue_wait(3), io_set_callback(3), io_submit(3), errno(3)


 

Index

NAME
SYNOPSYS
DESCRIPTION
RETURN VALUES
ERRORS
SEE ALSO


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