sval_buffer 2.18.0

Value buffering for sval
Documentation 
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#![feature(test)]

extern crate test;

#[macro_use]
extern crate sval_derive_macros;

#[cfg(feature = "alloc")]
#[derive(Value)]
struct OwnedData {
    id: i32,
    title: String,
    attributes: Vec<String>,
}

#[cfg(feature = "alloc")]
fn owned_data() -> OwnedData {
    OwnedData {
        id: 42,
        title: "A very important document".to_owned(),
        attributes: vec!["#1".to_owned(), "#2".to_owned(), "#3".to_owned()],
    }
}

#[cfg(feature = "alloc")]
#[derive(Value)]
struct BorrowedData<'a> {
    id: i32,
    title: &'a str,
    attributes: &'a [&'a str],
}

#[cfg(feature = "alloc")]
fn borrowed_data() -> BorrowedData<'static> {
    BorrowedData {
        id: 42,
        title: "A very important document",
        attributes: &["#1", "#2", "#3"],
    }
}

#[cfg(feature = "alloc")]
#[bench]
fn borrowed(b: &mut test::Bencher) {
    b.iter(|| borrowed_data())
}

#[cfg(feature = "alloc")]
#[bench]
fn borrowed_collect_ref(b: &mut test::Bencher) {
    b.iter(|| {
        let data = borrowed_data();
        test::black_box(sval_buffer::ValueBuf::collect(&data).unwrap());
    })
}

#[cfg(feature = "alloc")]
#[bench]
fn borrowed_collect(b: &mut test::Bencher) {
    b.iter(|| {
        let data = borrowed_data();
        test::black_box(sval_buffer::ValueBuf::collect_owned(data).unwrap());
    })
}

#[cfg(feature = "alloc")]
#[bench]
fn borrowed_collect_ref_to_owned(b: &mut test::Bencher) {
    b.iter(|| {
        let data = borrowed_data();
        sval_buffer::ValueBuf::collect(&data)
            .unwrap()
            .into_owned()
            .unwrap()
    })
}

#[cfg(feature = "alloc")]
#[bench]
fn borrowed_collect_to_owned(b: &mut test::Bencher) {
    b.iter(|| {
        let data = borrowed_data();
        sval_buffer::ValueBuf::collect_owned(&data)
            .unwrap()
            .into_owned()
            .unwrap()
    })
}

#[cfg(feature = "alloc")]
#[bench]
fn owned(b: &mut test::Bencher) {
    b.iter(|| owned_data())
}

#[cfg(feature = "alloc")]
#[bench]
fn owned_collect_ref(b: &mut test::Bencher) {
    b.iter(|| {
        let data = owned_data();
        test::black_box(sval_buffer::ValueBuf::collect(&data).unwrap());
    })
}

#[cfg(feature = "alloc")]
#[bench]
fn owned_collect(b: &mut test::Bencher) {
    b.iter(|| {
        let data = owned_data();
        test::black_box(sval_buffer::ValueBuf::collect_owned(data).unwrap());
    })
}

#[cfg(feature = "alloc")]
#[bench]
fn owned_collect_ref_to_owned(b: &mut test::Bencher) {
    b.iter(|| {
        let data = owned_data();
        sval_buffer::ValueBuf::collect(&data)
            .unwrap()
            .into_owned()
            .unwrap()
    })
}

#[cfg(feature = "alloc")]
#[bench]
fn owned_collect_to_owned(b: &mut test::Bencher) {
    b.iter(|| {
        let data = owned_data();
        sval_buffer::ValueBuf::collect_owned(&data)
            .unwrap()
            .into_owned()
            .unwrap()
    })
}