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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// A raw test of vector appending performance.
extern mod std;
use dvec::DVec;
use io::WriterUtil;
fn collect_raw(num: uint) -> ~[uint] {
let mut result = ~[];
for uint::range(0u, num) |i| {
result.push(i);
}
return result;
}
fn collect_dvec(num: uint) -> ~[uint] {
let result = DVec();
for uint::range(0u, num) |i| {
result.push(i);
}
return dvec::unwrap(move result);
}
fn main() {
let args = os::args();
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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