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).