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digitalmars.D - writing library in D for Linux and other OSes

reply "mrkafk" <mrkafk gmail.com> writes:
Hello,

D (complete) newbie here.

Being sick of C/C++ I would like to write my next library in D 
lang. It seems that wrting Win DLL is easy or perhaps workable at 
least (http://dlang.org/dll.html ), but what about other OSes, 
Linux at least? And iOS + OS X?

Specifically, I need to write library usable from Python. There's 
PYD, I know, but in general, if I wanted to call that library 
from other languages using C interface, how well it works in 
practice?

Another issue is GC: can I use D's garbage collection 
(realtime-like performance is not necessary for my needs) in the 
library and it will "just work" in say Python code? Or not?

Thanks!
Feb 14 2013
parent reply Martin Nowak <code dawg.eu> writes:
 Specifically, I need to write library usable from Python. There's PYD, I
 know, but in general, if I wanted to call that library from other
 languages using C interface, how well it works in practice?

http://forum.dlang.org/thread/sixndlzafvkehvrcevhx forum.dlang.org
 Another issue is GC: can I use D's garbage collection (realtime-like
 performance is not necessary for my needs) in the library and it will
 "just work" in say Python code? Or not?

interpreter and might break at some point (precise collector). It also depends on how you represent the D objects/memory but it's a problem that someone creating a binding should address. You might want to look at LuaD and PyD http://wiki.dlang.org/Libraries_and_Frameworks#Scripting_D_applications.
Feb 14 2013
next sibling parent "mrkafk" <mrkafk gmail.com> writes:
 Another issue is GC: can I use D's garbage collection 
 (realtime-like
 performance is not necessary for my needs) in the library and 
 it will
 "just work" in say Python code? Or not?

language's interpreter and might break at some point (precise collector).

Could you elaborate on this point (precise allocator) pls? Do you mean that library written in D will have its own D-provided GC and this will get in the way of either memory allocator or GC of a program using the library?
 It also depends on how you represent the D objects/memory but 
 it's a problem that someone creating a binding should address. 
 You might want to look at LuaD and PyD 
 http://wiki.dlang.org/Libraries_and_Frameworks#Scripting_D_applications.

Thanks!! I'm looking at this.
Feb 19 2013
prev sibling parent "lomereiter" <lomereiter gmail.com> writes:
 Hard to say, it depends on the implementation of your 
 language's interpreter and might break at some point (precise 
 collector).

Can you please elaborate on this? Recently I tried to make bindings for a D library to use it via FFI. They work just fine with Python 2.7 and PyPy 2.0, but segfault with Python 3.2. What could be the reason?
May 19 2013