does aio_write() open the file or it expects it open?

[nass]

hello everyone,
i am trying to do some file appending.
there is a loop that is running and whenever the condition is met, a
file needs to me opened and a buffer dumped into it.
now i have managed to make that work with fopen(FILE*, char*).

but aio_write needs a file descriptor to be fed into it through the
structure 'aiocb'.

searching through for how to get a file descriptor i found in the man
pages that open() returns exactly that.

my question is should i oen the file and then run aio_write(aiocb *)
or should i directly run aio_write() and it will do the opening and
closing of the file on its own?
thank you in advance for your help
nass

[Gavin Deane]

On 15 Feb, 12:45, "nass" <[e-mail]:

hello everyone,
i am trying to do some file appending.

<snip question about aio library>

Are you sure you're asking in the right place? There is no aio_write
and aiocb in standard C++. If they are standard C library beasts (my
brief googling suggests not, but I could be wrong, then comp.lang.c
will be able to help. Otherwise, you'll need to ask a forum dedicated
to the library, or perhaps a forum dedicated to your compiler if aio
is a standard extension with that coimpiler.

Gavin Deane

[Larry Smith]

nass wrote:

hello everyone,
i am trying to do some file appending.
there is a loop that is running and whenever the condition is met, a
file needs to me opened and a buffer dumped into it.
now i have managed to make that work with fopen(FILE*, char*).

but aio_write needs a file descriptor to be fed into it through the
structure 'aiocb'.

searching through for how to get a file descriptor i found in the man
pages that open() returns exactly that.

my question is should i oen the file and then run aio_write(aiocb *)
or should i directly run aio_write() and it will do the opening and
closing of the file on its own?
thank you in advance for your help
nass

aio is a Posix std lib found on many unix & linux systems.
Try asking in the Newsgroup comp.os.linux.development.system