Brian Hulley wrote:
>
>
>
> Since Begin would be a function exported by the DLL, Windows would ensure
> that the DLL was loaded when it is first called from your application if
> it
> was not already loaded so there would be no need for an explicit call to
> LoadLibrary.
>
>> and then End
Simon Marlow-5 wrote:
>
>
> I wonder if you're hitting this bug:
>
>http://hackage.haskell.org/trac/ghc/ticket/926
>
> if so, it's slightly worrying that the same thing happens if you just link
> your
> program directly to the DLL, rather than loading it explicitly.
>
> Cheers,
>
Brian Hulley wrote:
>
> SevenThunders wrote:
>> Before I post this as a bug, I thought I'd check to make sure I'm not
>> doing something wrong.
>> BOOL
>> STDCALL
>> DllMain
>> ( HANDLE hModule
>> , DWORD reason
>> ,
Before I post this as a bug, I thought I'd check to make sure I'm not doing
something wrong.
For this test case, on my windows XP machine I create a simple Haskell
routine that counts the characters in a file,
create a DLL for that routine and call it from C. The C code gives the
correct answer (
Simon Peyton-Jones wrote:
>
> Dear SevenThunders (if that is how you like to addressed)
>
> Thanks for extracting a small program that exhibits the leak; that is
> really helpful. We'll look into it. Would you like to create a Trac bug
> and attach your files?
>
I'm not sure if this is a bug, but it sure seems that way to me. When using
the "wrapper" technique for creating a Haskell callback function it seems
that freeHaskellFunPtr is not properly freeing the resource.
Here is an example program
module Main where
import Foreign
import Foreign.Ptr
impor
SevenThunders wrote:
>
>
> I just tried it under GHC 6.6 with the same results. If the DLL is loaded
> it crashes when it's unloaded even if no Haskell code is actually
> executed.
>
>
Here is the promised simple example. This example will cause an exception
whe
Michael Marte wrote:
>
> I am still using ghc 6.4.2 for creating my DLL and, as long as the DLL
> does not open a file, releasing the DLL works fine. I have not yet tried
> ghc 6.5.
>
> Michael
>
>
>
>
I just tried it under GHC 6.6 with the same results. If the DLL is loaded it
crashes w
Michael Marte wrote:
>
> Hello *,
>
> before filing a bug report, I want others to comment on my problem.
> Maybe it's my fault, not ghc's.
>
> I wrapped up some Haskell modules in a Win32 DLL.
> Loading the DLL dynamically (with LoadLibrary) works fine. However,
> whether I actually use the
