On 13/12/11 09:13, Steven Schveighoffer wrote:
On Mon, 12 Dec 2011 17:08:53 -0500, Bane
<branimir.milosavlje...@gmail.com> wrote:
I have been playing with std.process (D2) lately, and have 2
suggestions and more or less tested code if somebody other than my
self have use for it.
One is shell() function (not mentioned in the docs, curious), I see
it can be made more efficient on Windows. It executes shell command
and returns standard output as string. Current implementation do it
by piping stdout to temporary file on disk and reading that file
back. Using CreateProccess Windows API it can do same job 3 times
faster and remove need for temporary files and disk writes. I think
that is beneficial gain for some applications.
Other is fork-exec implementation eg. starting a program using
command line and detaching it from parent, so it continues to run
after parent is dead. On Posix it is implemented using fork() and
exec() calls, on Windows using CreateProcess.
There is a completely revamped version of std.process. It is being
held up right now because DMD on windows depends on DMC for it's C
runtime, and DMC has issues supporting pipes. I have recently opened
a pull request for Walter to merge, I'm going to ping him about it
right after 2.057 is released.
For more info, see the docs Lars posted here:
http://kyllingen.net/code/ltk/doc/process.html
Once the DMC issue is fixed, you should see this improvement getting
much more attention. It's very low hanging fruit.
-Steve
I took a look at the link, and it looks very nice.
I am currently trying to port an application over from Linux to Windows
and the lack of wait(pid) is currently a blocker.
--
Graham St Jack
