1 // Copyright 2012 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // This test creates a bunch of tasks that simultaneously send to each
12 // other in a ring. The messages should all be basically
14 // This is like msgsend-ring-pipes but adapted to use Arcs.
16 // This also serves as a pipes test, because Arcs are implemented with pipes.
28 type pipe = MutexArc<Vec<uint> >;
30 fn send(p: &pipe, msg: uint) {
32 p.access_cond(|state, cond| {
38 fn recv(p: &pipe) -> uint {
40 p.access_cond(|state, cond| {
41 while state.is_empty() {
49 fn init() -> (pipe,pipe) {
50 let m = MutexArc::new(Vec::new());
55 fn thread_ring(i: uint, count: uint, num_chan: pipe, num_port: pipe) {
56 let mut num_chan = Some(num_chan);
57 let mut num_port = Some(num_port);
58 // Send/Receive lots of messages.
59 for j in range(0u, count) {
60 //println!("task %?, iter %?", i, j);
61 let num_chan2 = num_chan.take_unwrap();
62 let num_port2 = num_port.take_unwrap();
63 send(&num_chan2, i * j);
64 num_chan = Some(num_chan2);
65 let _n = recv(&num_port2);
67 num_port = Some(num_port2);
72 let args = os::args();
73 let args = if os::getenv("RUST_BENCH").is_some() {
74 vec!(~"", ~"100", ~"10000")
75 } else if args.len() <= 1u {
76 vec!(~"", ~"10", ~"100")
81 let num_tasks = from_str::<uint>(args[1]).unwrap();
82 let msg_per_task = from_str::<uint>(args[2]).unwrap();
84 let (mut num_chan, num_port) = init();
86 let start = time::precise_time_s();
89 let mut futures = Vec::new();
91 for i in range(1u, num_tasks) {
92 //println!("spawning %?", i);
93 let (new_chan, num_port) = init();
94 let num_chan_2 = num_chan.clone();
95 let new_future = Future::spawn(proc() {
96 thread_ring(i, msg_per_task, num_chan_2, num_port)
98 futures.push(new_future);
103 thread_ring(0, msg_per_task, num_chan, num_port);
106 for f in futures.mut_iter() {
110 let stop = time::precise_time_s();
112 // all done, report stats.
113 let num_msgs = num_tasks * msg_per_task;
114 let elapsed = (stop - start);
115 let rate = (num_msgs as f64) / elapsed;
117 println!("Sent {} messages in {} seconds", num_msgs, elapsed);
118 println!(" {} messages / second", rate);
119 println!(" {} μs / message", 1000000. / rate);