[gambit-list] FFI Converting std::vector to scheme-vector (best practice)

Chris Mueller ruunsmail at gmail.com
Sun Aug 18 15:56:51 EDT 2013


On 17.08.2013 22:59, Mikael wrote:
> On struct it would make sense, it was indeed only pointered types I had
> on my mind. Allocate a billion, see for yourself and tell here?

I've checked this with the following example.

(define (alloc-string n)
   (let loop ((i 0))
      (if (< i n)
	(let ((a (std::string "test")))
            (loop (+ i 1)))
         (write "FIN")))))

When using (struct std::string ...) without a release function, memory 
grow's rapidly (checked this in htop) until it heap overflows.

With a given release function memory assumptions is constantly small.

Seems there is currently no difference in the deallocation behaviour
between structs and pointer types.

Too bad :/

Chris






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