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| Author |
Message |
< Erlang patches mailing list ~ patch to add a wrapper around the syscall posix_fadvise |
| Guest |
 Posted: Sun Apr 25, 2010 8:20 pm |
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Guest
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Hi,
The following patch adds a new function - file:advise/4
It's a wrapper around the POSIX syscall posix_fadvise, and does nothing
(always returns 'ok') on Windows.
This syscall allows one to declare the access pattern for a file's data.
Useful for many disk IO bound tasks, as it allows the underlying OS to adopt
a better caching strategy for the specified access pattern.
Man page: http://linux.die.net/man/2/posix_fadvise
I assigned the value 31 to the FILE_ADVISE constant because I assigned the
value 30 to a previously submitted patch (which adds a wrapper around the
syscall fdatasync).
Branch posix_fadvise in my github account:
git fetch git://github.com/fdmanana/otp.git posix_fadvise
Documentation and tests are included. Let me know if all is fine.
cheers
--
Filipe David Manana,
fdmanana@gmail.com
"Reasonable men adapt themselves to the world.
Unreasonable men adapt the world to themselves.
That's why all progress depends on unreasonable men."
Post received from mailinglist |
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| Guest |
| Posted: Sun Apr 25, 2010 8:21 pm |
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Guest
|
Hi,
The following patch adds a new function - file:advise/4
It's a wrapper around the POSIX syscall posix_fadvise, and does nothing
(always returns 'ok') on Windows.
This syscall allows one to declare the access pattern for a file's data.
Useful for many disk IO bound tasks, as it allows the underlying OS to adopt
a better caching strategy for the specified access pattern.
Man page: http://linux.die.net/man/2/posix_fadvise
I assigned the value 31 to the FILE_ADVISE constant because I assigned the
value 30 to a previously submitted patch (which adds a wrapper around the
syscall fdatasync).
Branch posix_fadvise in my github account:
git fetch git://github.com/fdmanana/otp.git posix_fadvise
Documentation and tests are included. Let me know if all is fine.
cheers
--
Filipe David Manana,
fdmanana@gmail.com
"Reasonable men adapt themselves to the world.
Unreasonable men adapt the world to themselves.
That's why all progress depends on unreasonable men."
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