diff options
Diffstat (limited to 'library/std/src/sys/pal/unix/futex.rs')
| -rw-r--r-- | library/std/src/sys/pal/unix/futex.rs | 54 |
1 files changed, 8 insertions, 46 deletions
diff --git a/library/std/src/sys/pal/unix/futex.rs b/library/std/src/sys/pal/unix/futex.rs index 8d89163c42c..c23278bdf5e 100644 --- a/library/std/src/sys/pal/unix/futex.rs +++ b/library/std/src/sys/pal/unix/futex.rs @@ -255,66 +255,28 @@ pub fn futex_wake_all(futex: &Atomic<u32>) { } #[cfg(target_os = "fuchsia")] -pub mod zircon { - pub type zx_futex_t = crate::sync::atomic::Atomic<u32>; - pub type zx_handle_t = u32; - pub type zx_status_t = i32; - pub type zx_time_t = i64; - - pub const ZX_HANDLE_INVALID: zx_handle_t = 0; - - pub const ZX_TIME_INFINITE: zx_time_t = zx_time_t::MAX; - - pub const ZX_OK: zx_status_t = 0; - pub const ZX_ERR_INVALID_ARGS: zx_status_t = -10; - pub const ZX_ERR_BAD_HANDLE: zx_status_t = -11; - pub const ZX_ERR_WRONG_TYPE: zx_status_t = -12; - pub const ZX_ERR_BAD_STATE: zx_status_t = -20; - pub const ZX_ERR_TIMED_OUT: zx_status_t = -21; - - unsafe extern "C" { - pub fn zx_clock_get_monotonic() -> zx_time_t; - pub fn zx_futex_wait( - value_ptr: *const zx_futex_t, - current_value: zx_futex_t, - new_futex_owner: zx_handle_t, - deadline: zx_time_t, - ) -> zx_status_t; - pub fn zx_futex_wake(value_ptr: *const zx_futex_t, wake_count: u32) -> zx_status_t; - pub fn zx_futex_wake_single_owner(value_ptr: *const zx_futex_t) -> zx_status_t; - pub fn zx_thread_self() -> zx_handle_t; - } -} - -#[cfg(target_os = "fuchsia")] pub fn futex_wait(futex: &Atomic<u32>, expected: u32, timeout: Option<Duration>) -> bool { + use super::fuchsia::*; + // Sleep forever if the timeout is longer than fits in a i64. let deadline = timeout - .and_then(|d| { - i64::try_from(d.as_nanos()) - .ok()? - .checked_add(unsafe { zircon::zx_clock_get_monotonic() }) - }) - .unwrap_or(zircon::ZX_TIME_INFINITE); + .and_then(|d| i64::try_from(d.as_nanos()).ok()?.checked_add(zx_clock_get_monotonic())) + .unwrap_or(ZX_TIME_INFINITE); unsafe { - zircon::zx_futex_wait( - futex, - core::sync::atomic::AtomicU32::new(expected), - zircon::ZX_HANDLE_INVALID, - deadline, - ) != zircon::ZX_ERR_TIMED_OUT + zx_futex_wait(futex, zx_futex_t::new(expected), ZX_HANDLE_INVALID, deadline) + != ZX_ERR_TIMED_OUT } } // Fuchsia doesn't tell us how many threads are woken up, so this always returns false. #[cfg(target_os = "fuchsia")] pub fn futex_wake(futex: &Atomic<u32>) -> bool { - unsafe { zircon::zx_futex_wake(futex, 1) }; + unsafe { super::fuchsia::zx_futex_wake(futex, 1) }; false } #[cfg(target_os = "fuchsia")] pub fn futex_wake_all(futex: &Atomic<u32>) { - unsafe { zircon::zx_futex_wake(futex, u32::MAX) }; + unsafe { super::fuchsia::zx_futex_wake(futex, u32::MAX) }; } |
