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