calling back to Haskell from several C threads

attached program crashes under GHC-6.2.1/mingw32 and GHC-6.4/mingw32

algorithm:

1. we create several threads with forkOS
2. each thread calls C function
3. C function in each thread made several calls back to Haskell
4. called Haskell functions do some work with memory
5. all these threads ended because C functions returns
6. we create another several threads...

after repeating these steps several times program crashes

may be, this error is due to the following from "The GHC Commentary - 
Supporting multi-threaded interoperation.htm":
> Note: As of 20020413, the implementation of the RTS API only serializes 
> access to the allocator between multiple OS threads wanting to call into 
> Haskell (via the RTS API.) It does not coordinate this access to the 
> allocator with that of the OS worker thread that's currently executing within 
> the RTS. This weakness/bug is scheduled to be tackled as part of an 
> overhaul/reworking of the RTS API itself.

  

-- 
Best regards,
 Bulat                          mailto:bulatz@xxxxxxxxxx

mtest.zip
Description: Zip compressed data

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