vorner / bumpalo-herd Goto Github PK

Are collections supported?

Is this the correct way to use them, it seems to work:

struct MyStruct {
    a: usize,
    b: usize,
}
let bvec: &mut Vec<MyStruct> = gr.bumpalo_herd.get().alloc(vec![]);
bvec.push(MyStruct {
    a: 12,
    b: 53,
});
for x in bvec {
    println!("{}/{}", x.a, x.b);
}

cargo miri test changed to be more compatible with cargo test, but this means we had to find a different way to pass flags to the interpreter, so there now is a MIRIFLAGS environment variable for that. The old way still works for now, but is deprecated.

This affects the following line:

First of all I'd like to say that it is a great crate and it is very relevant to my work.

While working with it I came a cross of several ideas, not sure if @vorner would find them adequate:

1. Add get_by_id() method which would allow to get a Bump attached to some kind of resource - a thread for example. Members acquired in such a way would not be shared between different resources - only within one resource designated by some kind of user-provided ID (thread ID, worker ID, coroutine ID, whatever).
2. Add reset_unsafe() method so that if user could reset an individual member if he really knows what he's doing. That is supposed to play together with the above method.

In latest Rust nightly we can allocate with custom allocator (for example https://doc.rust-lang.org/nightly/alloc/vec/struct.Vec.html#method.new_in).

It will be great for bumpalo-herd to provide the ability to use this. To achieve this, we need to implement std::alloc::AllocRef.

See also fitzgen/bumpalo#87.