#![feature(test)]

extern crate test;

use solana_runtime::message_processor::is_zeroed;
use test::Bencher;

const BUFSIZE: usize = 1024 * 1024 + 127;
static BUF0: [u8; BUFSIZE] = [0; BUFSIZE];
static BUF1: [u8; BUFSIZE] = [1; BUFSIZE];

#[bench]
fn bench_is_zeroed(bencher: &mut Bencher) {
    bencher.iter(|| {
        is_zeroed(&BUF0);
    });
}

#[bench]
fn bench_is_zeroed_not(bencher: &mut Bencher) {
    bencher.iter(|| {
        is_zeroed(&BUF1);
    });
}

#[bench]
fn bench_is_zeroed_by_iter(bencher: &mut Bencher) {
    bencher.iter(|| BUF0.iter().all(|item| *item == 0));
}

#[bench]
fn bench_is_zeroed_not_by_iter(bencher: &mut Bencher) {
    bencher.iter(|| BUF1.iter().all(|item| *item == 0));
}