tisdag 27 december 2011

w1d5: Thought: Weak links

Weak links is a good addition/future work Each memory chunk would have a back pointer to the headers where handles are stored.

struct weak_handle_t;

struct chunk_info_t {
    // ...
    struct weak_handle_t *weak_handle; // linked list
    // ...

struct handle_t {
    chunk_info_t *chunk;
struct weak_handle_t {
    struct handle_t *handle; // not for inheritance use. NULL when auto-free'd

Handy for caches where data should be thrown out as needed.

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