[Chicken-hackers] tospace locking

[felix winkelmann]

Hi!

The current trunk has a new build option to enable "tospace locking",
which disables read/write access to the currently unused heap space.
This is intended to catch bugs related to holding references to dead
memory (for example in ffi code). Enable it by passing "LOCKTOSPACE=1"
to the "make" invocation. I have not measured the performance impact yet.
Moreover, it uses mprotect() on malloc()ed memory, which isn't available
everywhere and according to POSIX not even defined (works in Linux, though).


cheers,
felix