116 lines
3.2 KiB
Rust
116 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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// This test creates a bunch of tasks that simultaneously send to each
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// other in a ring. The messages should all be basically
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// independent.
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// This is like msgsend-ring-pipes but adapted to use Arcs.
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// This also serves as a pipes test, because Arcs are implemented with pipes.
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extern crate sync;
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extern crate time;
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use sync::RWArc;
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use sync::Future;
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use std::os;
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use std::uint;
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// A poor man's pipe.
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type pipe = RWArc<Vec<uint> >;
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fn send(p: &pipe, msg: uint) {
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p.write_cond(|state, cond| {
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state.push(msg);
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cond.signal();
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})
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}
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fn recv(p: &pipe) -> uint {
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p.write_cond(|state, cond| {
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while state.is_empty() {
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cond.wait();
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}
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state.pop().unwrap()
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})
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}
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fn init() -> (pipe,pipe) {
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let x = RWArc::new(Vec::new());
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((&x).clone(), x)
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}
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fn thread_ring(i: uint, count: uint, num_chan: pipe, num_port: pipe) {
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let mut num_chan = Some(num_chan);
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let mut num_port = Some(num_port);
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// Send/Receive lots of messages.
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for j in range(0u, count) {
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//println!("task %?, iter %?", i, j);
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let num_chan2 = num_chan.take_unwrap();
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let num_port2 = num_port.take_unwrap();
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send(&num_chan2, i * j);
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num_chan = Some(num_chan2);
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let _n = recv(&num_port2);
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//log(error, _n);
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num_port = Some(num_port2);
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};
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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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vec!(~"", ~"100", ~"10000")
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} else if args.len() <= 1u {
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vec!(~"", ~"10", ~"100")
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} else {
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args.clone().move_iter().collect()
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};
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let num_tasks = from_str::<uint>(*args.get(1)).unwrap();
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let msg_per_task = from_str::<uint>(*args.get(2)).unwrap();
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let (mut num_chan, num_port) = init();
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let start = time::precise_time_s();
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// create the ring
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let mut futures = Vec::new();
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for i in range(1u, num_tasks) {
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//println!("spawning %?", i);
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let (new_chan, num_port) = init();
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let num_chan_2 = num_chan.clone();
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let new_future = Future::spawn(proc() {
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thread_ring(i, msg_per_task, num_chan_2, num_port)
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});
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futures.push(new_future);
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num_chan = new_chan;
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};
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// do our iteration
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thread_ring(0, msg_per_task, num_chan, num_port);
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// synchronize
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for f in futures.mut_iter() {
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let _ = f.get();
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}
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let stop = time::precise_time_s();
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// all done, report stats.
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let num_msgs = num_tasks * msg_per_task;
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let elapsed = (stop - start);
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let rate = (num_msgs as f64) / elapsed;
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println!("Sent {} messages in {} seconds", num_msgs, elapsed);
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println!(" {} messages / second", rate);
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println!(" {} μs / message", 1000000. / rate);
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}
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