770501 - [OS.File] Linux/Android optimizations

Status: RESOLVED WONTFIX

(Core :: Networking: File, defect, P3)

Description

[David Teller [:Yoric] - still alive but not very active]

Linux kernels offer the following functions:
- dirfd, fdopendir;
- openat, statat, unlinkat, etc.

Whenever they can be used, they can be much faster than open, stat, unlink, etc. We should expose them and make use of them.

Comment 1

[David Teller [:Yoric] - still alive but not very active]

We might wish to implement the following functions in the front-end:

- File.prototype.linuxDirectoryIterator (behaves as |new DirectoryIterator|, but from a file descriptor, using |fdopendir|);

- File.prototype.linuxOpenAt (behaves as |File.open|, but for a file in |this|, and only if |this| is a directory);

- File.prototype.linuxInfoAt (behaves as |File.info|, but for a file in |this|, and only if |this| is a directory);

- File.prototype.linuxRemoveAt (behaves as |File.remove|, but for a file in |this|, and only if |this| is a directory).

Comment 2

[Firefox Bug Husbandry Bot]

Bulk change to priority: https://bugzilla.mozilla.org/show_bug.cgi?id=1399258

Comment 3

[Firefox Bug Husbandry Bot]

Bulk change to priority: https://bugzilla.mozilla.org/show_bug.cgi?id=1399258

Comment 4

[Sylvestre Ledru [:Sylvestre]]

Mass closing as we are no longer working on b2g/firefox os.

Comment 5

[Sylvestre Ledru [:Sylvestre]]

Mass closing as we are no longer working on b2g/firefox os.

Comment 6

[David Teller [:Yoric] - still alive but not very active]

Sylvestre, this bug was also about Linux and Android. Most of the optimizations have been done already, but I don't think it is worth closing it just yet :)

Comment 7

[Sylvestre Ledru [:Sylvestre]]

David, would you mind explaining what hasn't been implemented? Thanks

Comment 8

[David Teller [:Yoric] - still alive but not very active]

Actually, much of https://bugzilla.mozilla.org/show_bug.cgi?id=770501#c1 hasn't been implemented.

I realize that we don't really care about I/O performance these days, so we might as well close the bug, as you did.