I didn't even think of that, but you're right, of course. The parent
gets a SIGCHLD when the child terminates. I wonder if it's possible to
restrict the callback so that it's safe to call it from a signal
handler? It would have to be nothrow, that's for sure, but that's
probably not enough. It is all too easy to make thread-unsafe code with
signal handlers. Is it possible to mark functions or delegates with
'shared', so they only operate on shared data?
-Lars
Sean Kelly wrote:
In *nix you can set a signal handler to be notified when a child process
completes. But the restrictions on what can be done inside a signal handler
are such that maybe executing a callback from inside one isn't a good idea
anyway.
On Mar 8, 2010, at 12:22 AM, Lars Tandle Kyllingstad wrote:
I don't know any way of doing this besides spawning a separate thread that a)
starts the process, b) waits for it to complete, and c) calls the callback
function/delegate.
Is this what you had in mind?
-Lars
Sean Kelly wrote:
I'm not sure if this is supported in Windows, but if so, it might be nice if I
could set a callback that would be executed when the process completes.
On Mar 3, 2010, at 9:44 AM, Lars Tandle Kyllingstad wrote:
Hi,
Recently, I found myself in need of the functionality that is (or should have
been) in std.process, but unfortunately I found it lacking in many respects.
Assuming that improving it currently isn't at the top of the to-do list for
Phobos, I decided not to wait, and rather to write my own version. If you want
you can check it out here:
Code: http://github.com/kyllingstad/ltk/blob/master/ltk/process.d
Docs: http://kyllingen.net/code/ltk/doc/process.html
I don't know if any of it is usable for Phobos, but if it is, I'd be happy to
contribute.
I've tried to write it in the style of std.concurrency, with a function
spawnProcess() that returns a Pid struct. Currently it is for POSIX only,
since I have no experience at all with the Windows API.
-Lars
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Lars Tandle Kyllingstad
@: [email protected]
#: 40233221
w: http://www.kyllingen.net
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--
Lars Tandle Kyllingstad
@: [email protected]
#: 40233221
w: http://www.kyllingen.net
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