These functions provide a wrapper that protect access to pointers.

Eina_Safepointer is an pointer to index converter that allows an increased level of safety by forbidding direct access to the pointer. The protection works by using a set of indirection tables that are mmapped and mprotected against write access. Thus the pointer they store and that map to a specific index is always correct. Also once a pointer is unregistered the index won't be served back for 2^8 on 32 bits system and 2^28 on 64 bits system for that specific slot. Finally we guarantee that the lower 2 bits of the returned index are actually never used and completely ignored by our API. So you can safely store whatever information you want in it, we will ignore it and treat as if it wasn't there.

Note:

The use of Eina_Safepointer is thread safe.

Typedef Documentation

Function Documentation