only_chain_length_at_most - Memory profiling for fun and profit

AllocationList::only_chain_length_at_most

fn only_chain_length_at_most(
    self: AllocationList,
    threshold: Integer
) -> AllocationList

Returns a new AllocationList with only the allocations whose whole allocation chain was at most threshold allocations long.

For example, for the following allocation pattern:

void * a0 = malloc(size);
void * a1 = realloc(a0, size + 1);

void * b0 = malloc(size);
void * b1 = realloc(b0, size + 1);
void * b2 = realloc(b1, size + 2);

this code:

allocations().only_chain_length_at_most(2)

will only match a0 and a1, since their whole allocation chain has at most two allocations.