66 lines
1.9 KiB
Rust
66 lines
1.9 KiB
Rust
// A raw test of vector appending performance.
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use std;
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import dvec::{dvec, extensions};
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import io::writer_util;
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fn collect_raw(num: uint) -> ~[uint] {
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let mut result = ~[];
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for uint::range(0u, num) |i| {
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vec::push(result, i);
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}
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return result;
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}
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fn collect_dvec(num: uint) -> ~[mut uint] {
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let result = dvec();
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for uint::range(0u, num) |i| {
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result.push(i);
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}
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return dvec::unwrap(result);
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}
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fn main(args: ~[~str]) {
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let args = if os::getenv(~"RUST_BENCH").is_some() {
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~[~"", ~"50000000"]
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} else if args.len() <= 1u {
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~[~"", ~"100000"]
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} else {
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args
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};
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let max = uint::from_str(args[1]).get();
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let start = std::time::precise_time_s();
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let raw_v = collect_raw(max);
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let mid = std::time::precise_time_s();
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let dvec_v = collect_dvec(max);
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let end = std::time::precise_time_s();
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// check each vector
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assert raw_v.len() == max;
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for raw_v.eachi |i, v| { assert i == v; }
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assert dvec_v.len() == max;
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for dvec_v.eachi |i, v| { assert i == v; }
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let raw = mid - start;
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let dvec = end - mid;
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let maxf = max as float;
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let rawf = raw as float;
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let dvecf = dvec as float;
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io::stdout().write_str(fmt!{"Raw : %? seconds\n", raw});
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io::stdout().write_str(fmt!{" : %f op/sec\n", maxf/rawf});
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io::stdout().write_str(fmt!{"\n"});
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io::stdout().write_str(fmt!{"Dvec : %? seconds\n", dvec});
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io::stdout().write_str(fmt!{" : %f op/sec\n", maxf/dvecf});
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io::stdout().write_str(fmt!{"\n"});
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if dvec < raw {
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io::stdout().write_str(fmt!{"Dvec is %f%% faster than raw\n",
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(rawf - dvecf) / rawf * 100.0});
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} else {
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io::stdout().write_str(fmt!{"Raw is %f%% faster than dvec\n",
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(dvecf - rawf) / dvecf * 100.0});
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}
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}
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