diff options
Diffstat (limited to 'src/features.rs')
-rw-r--r-- | src/features.rs | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/src/features.rs b/src/features.rs index 39d1760..9e292cb 100644 --- a/src/features.rs +++ b/src/features.rs @@ -6,6 +6,7 @@ mod os { use crate::sys::utsname::uname; use crate::Result; use std::os::unix::ffi::OsStrExt; + use std::sync::atomic::{AtomicUsize, Ordering}; // Features: // * atomic cloexec on socket: 2.6.27 @@ -72,15 +73,15 @@ mod os { } fn kernel_version() -> Result<usize> { - static mut KERNEL_VERS: usize = 0; + static KERNEL_VERS: AtomicUsize = AtomicUsize::new(0); + let mut kernel_vers = KERNEL_VERS.load(Ordering::Relaxed); - unsafe { - if KERNEL_VERS == 0 { - KERNEL_VERS = parse_kernel_version()?; - } - - Ok(KERNEL_VERS) + if kernel_vers == 0 { + kernel_vers = parse_kernel_version()?; + KERNEL_VERS.store(kernel_vers, Ordering::Relaxed); } + + Ok(kernel_vers) } /// Check if the OS supports atomic close-on-exec for sockets @@ -112,6 +113,7 @@ mod os { } #[cfg(any( + target_os = "aix", target_os = "macos", target_os = "ios", target_os = "fuchsia", |