rust/src/test/run-pass/rt-sched-1.rs

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// Tests of the runtime's scheduler interface
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use ptr::is_null;
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type sched_id = int;
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type task_id = *libc::c_void;
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type task = *libc::c_void;
type closure = *libc::c_void;
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extern mod rustrt {
#[legacy_exports];
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fn rust_new_sched(num_threads: libc::uintptr_t) -> sched_id;
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fn rust_get_sched_id() -> sched_id;
fn rust_new_task_in_sched(id: sched_id) -> task_id;
fn start_task(id: task_id, f: closure);
}
fn main() unsafe {
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let po = comm::Port();
let ch = comm::Chan(po);
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let parent_sched_id = rustrt::rust_get_sched_id();
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error!("parent %?", parent_sched_id);
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let num_threads = 1u;
let new_sched_id = rustrt::rust_new_sched(num_threads);
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error!("new_sched_id %?", new_sched_id);
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let new_task_id = rustrt::rust_new_task_in_sched(new_sched_id);
assert !new_task_id.is_null();
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let f = fn~() {
let child_sched_id = rustrt::rust_get_sched_id();
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error!("child_sched_id %?", child_sched_id);
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assert child_sched_id != parent_sched_id;
assert child_sched_id == new_sched_id;
comm::send(ch, ());
};
let fptr = cast::reinterpret_cast(&ptr::addr_of(&f));
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rustrt::start_task(new_task_id, fptr);
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cast::forget(f);
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comm::recv(po);
}