112 lines
3.2 KiB
Rust
112 lines
3.2 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// A port of the simplistic benchmark from
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//
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// http://github.com/PaulKeeble/ScalaVErlangAgents
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//
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// I *think* it's the same, more or less.
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// This version uses pipes with a shared send endpoint. It should have
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// different scalability characteristics compared to the select
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// version.
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extern mod extra;
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use std::io::Writer;
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use std::io::WriterUtil;
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use std::comm::{Port, Chan, SharedChan};
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macro_rules! move_out (
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{ $x:expr } => { unsafe { let y = *ptr::to_unsafe_ptr(&($x)); y } }
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)
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enum request {
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get_count,
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bytes(uint),
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stop
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}
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fn server(requests: &Port<request>, responses: &comm::Chan<uint>) {
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let mut count = 0u;
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let mut done = false;
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while !done {
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match requests.try_recv() {
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Some(get_count) => { responses.send(copy count); }
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Some(bytes(b)) => {
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//error!("server: received %? bytes", b);
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count += b;
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}
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None => { done = true; }
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_ => { }
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}
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}
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responses.send(count);
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//error!("server exiting");
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}
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fn run(args: &[~str]) {
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let (from_child, to_parent) = comm::stream();
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let (from_parent, to_child) = comm::stream();
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let to_child = SharedChan::new(to_child);
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let size = uint::from_str(args[1]).get();
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let workers = uint::from_str(args[2]).get();
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let num_bytes = 100;
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let start = extra::time::precise_time_s();
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let mut worker_results = ~[];
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for uint::range(0, workers) |_i| {
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let to_child = to_child.clone();
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let mut builder = task::task();
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builder.future_result(|r| worker_results.push(r));
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do builder.spawn {
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for uint::range(0, size / workers) |_i| {
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//error!("worker %?: sending %? bytes", i, num_bytes);
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to_child.send(bytes(num_bytes));
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}
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//error!("worker %? exiting", i);
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}
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}
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do task::spawn || {
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server(&from_parent, &to_parent);
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}
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for vec::each(worker_results) |r| {
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r.recv();
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}
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//error!("sending stop message");
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to_child.send(stop);
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move_out!(to_child);
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let result = from_child.recv();
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let end = extra::time::precise_time_s();
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let elapsed = end - start;
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io::stdout().write_str(fmt!("Count is %?\n", result));
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io::stdout().write_str(fmt!("Test took %? seconds\n", elapsed));
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let thruput = ((size / workers * workers) as float) / (elapsed as float);
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io::stdout().write_str(fmt!("Throughput=%f per sec\n", thruput));
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assert_eq!(result, num_bytes * size);
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}
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fn main() {
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let args = os::args();
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let args = if os::getenv(~"RUST_BENCH").is_some() {
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~[~"", ~"1000000", ~"10000"]
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} else if args.len() <= 1u {
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~[~"", ~"10000", ~"4"]
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} else {
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copy args
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};
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debug!("%?", args);
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run(args);
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}
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