45 lines
944 B
Rust
45 lines
944 B
Rust
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#![feature(test)]
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///! Test evaluating expressions
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extern crate test;
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use rhai::{Engine, OptimizationLevel};
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use test::Bencher;
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// This script uses the Sieve of Eratosthenes to calculate prime numbers.
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const SCRIPT: &str = r#"
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let now = timestamp();
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const MAX_NUMBER_TO_CHECK = 1_000; // 168 primes <= 1000
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let prime_mask = [];
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prime_mask.pad(MAX_NUMBER_TO_CHECK, true);
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prime_mask[0] = prime_mask[1] = false;
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let total_primes_found = 0;
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for p in range(2, MAX_NUMBER_TO_CHECK) {
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if prime_mask[p] {
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total_primes_found += 1;
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let i = 2 * p;
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while i < MAX_NUMBER_TO_CHECK {
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prime_mask[i] = false;
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i += p;
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}
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}
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}
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"#;
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#[bench]
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fn bench_eval_primes(bench: &mut Bencher) {
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let mut engine = Engine::new();
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engine.set_optimization_level(OptimizationLevel::None);
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let ast = engine.compile(SCRIPT).unwrap();
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bench.iter(|| engine.consume_ast(&ast).unwrap());
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}
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