729060dbb9
`Times::times` was always a second-class loop because it did not support the `break` and `continue` operations. Its playful appeal was then lost after `do` was disabled for closures. It's time to let this one go.
50 lines
1.2 KiB
Rust
50 lines
1.2 KiB
Rust
// 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.
|
|
|
|
// This creates a bunch of descheduling tasks that run concurrently
|
|
// while holding onto C stacks
|
|
|
|
use std::libc;
|
|
use std::task;
|
|
|
|
mod rustrt {
|
|
use std::libc;
|
|
|
|
#[link(name = "rustrt")]
|
|
extern {
|
|
pub fn rust_dbg_call(cb: extern "C" fn(libc::uintptr_t) -> libc::uintptr_t,
|
|
data: libc::uintptr_t)
|
|
-> libc::uintptr_t;
|
|
}
|
|
}
|
|
|
|
extern fn cb(data: libc::uintptr_t) -> libc::uintptr_t {
|
|
if data == 1u {
|
|
data
|
|
} else {
|
|
task::deschedule();
|
|
count(data - 1u) + count(data - 1u)
|
|
}
|
|
}
|
|
|
|
fn count(n: uint) -> uint {
|
|
unsafe {
|
|
rustrt::rust_dbg_call(cb, n)
|
|
}
|
|
}
|
|
|
|
pub fn main() {
|
|
for _ in range(0, 100u) {
|
|
task::spawn(proc() {
|
|
assert_eq!(count(5u), 16u);
|
|
});
|
|
}
|
|
}
|