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// Copyright 2017 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.
use alloc_crate::boxed::FnBox;
use libc;
use cmp;
use ffi::CStr;
use io;
use mem;
use ptr;
use sys_common::thread::start_thread;
use time::Duration;
use libctru::Thread as ThreadHandle;
pub struct Thread {
handle: ThreadHandle,
}
unsafe impl Send for Thread {}
unsafe impl Sync for Thread {}
pub const DEFAULT_MIN_STACK_SIZE: usize = 4096;
impl Thread {
pub unsafe fn new<'a>(stack: usize, p: Box<FnBox() + 'a>) -> io::Result<Thread> {
let p = box p;
let stack_size = cmp::max(stack, DEFAULT_MIN_STACK_SIZE);
let mut priority = 0;
::libctru::svcGetThreadPriority(&mut priority, 0xFFFF8000);
let handle = ::libctru::threadCreate(Some(thread_func), &*p as *const _ as *mut _,
stack_size, priority, -2, false);
return if handle == ptr::null_mut() {
Err(io::Error::from_raw_os_error(libc::EAGAIN))
} else {
mem::forget(p); // ownership passed to the new thread
Ok(Thread { handle: handle })
};
extern "C" fn thread_func(start: *mut libc::c_void) {
unsafe { start_thread(start as *mut u8) }
}
}
pub fn yield_now() {
unsafe {
::libctru::svcSleepThread(0)
}
}
pub fn set_name(_name: &CStr) {
// threads aren't named in libctru
}
pub fn sleep(dur: Duration) {
unsafe {
let nanos = dur.as_secs()
.saturating_mul(1_000_000_000)
.saturating_add(dur.subsec_nanos() as u64);
::libctru::svcSleepThread(nanos as i64)
}
}
pub fn join(self) {
unsafe {
let ret = ::libctru::threadJoin(self.handle, u64::max_value());
::libctru::threadFree(self.handle);
mem::forget(self);
debug_assert_eq!(ret, 0);
}
}
#[allow(dead_code)]
pub fn id(&self) -> ThreadHandle {
self.handle
}
#[allow(dead_code)]
pub fn into_id(self) -> ThreadHandle {
let handle = self.handle;
mem::forget(self);
handle
}
}
impl Drop for Thread {
fn drop(&mut self) {
unsafe { ::libctru::threadDetach(self.handle) }
}
}
pub mod guard {
pub unsafe fn current() -> Option<usize> { None }
pub unsafe fn init() -> Option<usize> { None }
}
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