io_prep_pwrite3
Set up iocb for asynchronous writes
Usage
#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;
};
Overview
io_prep_write() is a convenience 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(3) must be called.
Simultaneous asynchronous operations using the same iocb produce undefined results.
Return values
None.
Errors
None.
Releases
11 releases since Debian 4.0 (Etch); the text changed 4 times.