diff options
Diffstat (limited to 'library/std/src/sys/sgx/thread_parking.rs')
-rw-r--r-- | library/std/src/sys/sgx/thread_parking.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/library/std/src/sys/sgx/thread_parking.rs b/library/std/src/sys/sgx/thread_parking.rs new file mode 100644 index 000000000..0006cd4f1 --- /dev/null +++ b/library/std/src/sys/sgx/thread_parking.rs @@ -0,0 +1,23 @@ +use super::abi::usercalls; +use crate::io::ErrorKind; +use crate::time::Duration; +use fortanix_sgx_abi::{EV_UNPARK, WAIT_INDEFINITE}; + +pub type ThreadId = fortanix_sgx_abi::Tcs; + +pub use super::abi::thread::current; + +pub fn park(_hint: usize) { + usercalls::wait(EV_UNPARK, WAIT_INDEFINITE).unwrap(); +} + +pub fn park_timeout(dur: Duration, _hint: usize) { + let timeout = u128::min(dur.as_nanos(), WAIT_INDEFINITE as u128 - 1) as u64; + if let Err(e) = usercalls::wait(EV_UNPARK, timeout) { + assert!(matches!(e.kind(), ErrorKind::TimedOut | ErrorKind::WouldBlock)) + } +} + +pub fn unpark(tid: ThreadId, _hint: usize) { + let _ = usercalls::send(EV_UNPARK, Some(tid)); +} |