that is what I thought .. especially after just looking at the implementation for alloca/allocaBytes. For me and others on thie group is there documentation on the ghc run-time model and also the run-time library architecture. Both would help/aid in reading the code and of course educate more people?
Regards, Vasili On Thu, Aug 7, 2008 at 1:36 AM, Henning Thielemann < [EMAIL PROTECTED]> wrote: > > On Thu, 7 Aug 2008, Bulat Ziganshin wrote: > > > Hello Vasili, > > > > Thursday, August 7, 2008, 9:33:32 AM, you wrote: > > > > oh, it was my mistake. alloca behavior is completely defined by it's > > generic implementation: > > > > allocaBytes :: Int -> (Ptr a -> IO b) -> IO b > > allocaBytes size = bracket (mallocBytes size) free > > > > although GHC implementation is much more efficient > > That is, it is not a good idea to use 'allocaBytes n return' in order to > carry a pointer of an allocated piece of memory out of the inner action. >
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