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digitalmars.D.learn - DLL hell :S

reply Ian Hatch <wererogue gmail.com> writes:
Hello!

I'm Ian, and I've been a programmer in games for 10 years.  I've 
been poking at D for a year or so and I'm absolutely in love with 
the compile-time execution and inline unit testing in particular.

I've been trying for a while to set up a project that I intend to 
build a lot of my future code on top of, but I'm stumbling at one 
of the first hurdles at the moment so I'm hoping I can straighten 
this out and be able to keep using D.

My framework is supposed to load plugin dlls (and later 
sharedobjects) which operate on memory allocated by the 
executable, and sadly I've hit roadblock after roadblock trying 
to get this set up.

Following https://wiki.dlang.org/Win32_DLLs_in_D I've gotten to a 
stage where I successfully load the DLL, find my functions, and 
call them passing the objects to be modified.

Initially this was crashing immediately.  After a lot of digging 
I found https://issues.dlang.org/show_bug.cgi?id=17326, so now 
I've added the gcopt to my dll to set the gc to manual, and I'm 
passing over my gc pointer and trying to set it as the proxy.

Unfortunately this results in the DLL getting stuck in a spinlock 
in addRange within gc_setProxy() :(

DLL side:
https://pastebin.com/yBPs0A30

EXE side:
https://pastebin.com/h2qLBqXA

Thread lock call stack:
https://pastebin.com/zUvH3Cnb

I'm not really sure where to go from here.  I'm doing this in my 
spare time and I've been stuck for months on something I know how 
to do in C++ (I really should have asked for help earlier).  Is 
there an up to date example someone can point me to of how to set 
this up correctly so that the DLL uses the exe's runtime and/or 
garbage collector?
Oct 07 2017
parent reply rikki cattermole <rikki cattermole.co.nz> writes:
Email Walter directly.

I intend to campaign for next years (basically a soft TODO list) plan 
for what we want done. But until then, he and Andrei need to hear that 
this is the biggest limitation that D faces currently, not memory 
management.
Oct 07 2017
parent reply Ian Hatch <wererogue gmail.com> writes:
On Saturday, 7 October 2017 at 15:14:01 UTC, rikki cattermole 
wrote:

 Email Walter directly.

 I intend to campaign for next years (basically a soft TODO 
 list) plan for what we want done. But until then, he and Andrei 
 need to hear that this is the biggest limitation that D faces 
 currently, not memory management.


Hm, are you saying "if you email Walter he can tell you how to 
sort it" or "please make sure Walter knows this problem is 
important" (or both)?  Definitely happy to give my feedback.

"not memory management" gives me an idea actually - if I ditch 
the GC, which I may want to do eventually anyway, I guess I won't 
have this issue.
Oct 07 2017
parent reply rikki cattermole <rikki cattermole.co.nz> writes:
On 07/10/2017 4:29 PM, Ian Hatch wrote:

 On Saturday, 7 October 2017 at 15:14:01 UTC, rikki cattermole wrote:

 Email Walter directly.

 I intend to campaign for next years (basically a soft TODO list) plan 
 for what we want done. But until then, he and Andrei need to hear that 
 this is the biggest limitation that D faces currently, not memory 
 management.


 
 Hm, are you saying "if you email Walter he can tell you how to sort it" 
 or "please make sure Walter knows this problem is important" (or both)?  
 Definitely happy to give my feedback.


A little from column a, a little from column b, but most because he 
might be able to do something for you.


 "not memory management" gives me an idea actually - if I ditch the GC, 
 which I may want to do eventually anyway, I guess I won't have this issue.
Oct 07 2017
parent Ian Hatch <wererogue gmail.com> writes:
On Saturday, 7 October 2017 at 15:30:30 UTC, rikki cattermole 
wrote:

 A little from column a, a little from column b, but most 
 because he might be able to do something for you.


Thanks, I'll send him an email.
Oct 07 2017