From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:03 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- library/std/src/sys/unix/thread_parking/netbsd.rs | 52 +++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 library/std/src/sys/unix/thread_parking/netbsd.rs (limited to 'library/std/src/sys/unix/thread_parking/netbsd.rs') diff --git a/library/std/src/sys/unix/thread_parking/netbsd.rs b/library/std/src/sys/unix/thread_parking/netbsd.rs new file mode 100644 index 000000000..3be081221 --- /dev/null +++ b/library/std/src/sys/unix/thread_parking/netbsd.rs @@ -0,0 +1,52 @@ +use crate::ffi::{c_int, c_void}; +use crate::ptr; +use crate::time::Duration; +use libc::{_lwp_self, clockid_t, lwpid_t, time_t, timespec, CLOCK_MONOTONIC}; + +extern "C" { + fn ___lwp_park60( + clock_id: clockid_t, + flags: c_int, + ts: *mut timespec, + unpark: lwpid_t, + hint: *const c_void, + unparkhint: *const c_void, + ) -> c_int; + fn _lwp_unpark(lwp: lwpid_t, hint: *const c_void) -> c_int; +} + +pub type ThreadId = lwpid_t; + +#[inline] +pub fn current() -> ThreadId { + unsafe { _lwp_self() } +} + +#[inline] +pub fn park(hint: usize) { + unsafe { + ___lwp_park60(0, 0, ptr::null_mut(), 0, ptr::invalid(hint), ptr::null()); + } +} + +pub fn park_timeout(dur: Duration, hint: usize) { + let mut timeout = timespec { + // Saturate so that the operation will definitely time out + // (even if it is after the heat death of the universe). + tv_sec: dur.as_secs().try_into().ok().unwrap_or(time_t::MAX), + tv_nsec: dur.subsec_nanos().into(), + }; + + // Timeout needs to be mutable since it is modified on NetBSD 9.0 and + // above. + unsafe { + ___lwp_park60(CLOCK_MONOTONIC, 0, &mut timeout, 0, ptr::invalid(hint), ptr::null()); + } +} + +#[inline] +pub fn unpark(tid: ThreadId, hint: usize) { + unsafe { + _lwp_unpark(tid, ptr::invalid(hint)); + } +} -- cgit v1.2.3