Use unstable feature gate for NUMA allocator

bastion-executor/Cargo.toml

@@ -12,6 +12,9 @@ readme = "README.md"
 license = "Apache-2.0/MIT"
 edition = "2018"
 
+[features]
+unstable = ["numanji", "allocator-suite"]
+
 [dependencies]
 crossbeam-utils = "0.6"
 crossbeam-epoch = "0.7"
@@ -20,9 +23,11 @@ libc = "0.2"
 num_cpus = "1.10"
 rustc-hash = "1.0.1"
 pin-utils = "0.1.0-alpha.4"
-numanji = "^0.1"
-allocator-suite = "^0.1"
 lightproc = { "path" = "../lightproc" }
 
+# Allocator
+numanji = { version = "^0.1", optional = true, default-features = false}
+allocator-suite = { version = "^0.1", optional = true, default-features = false}
+
 [target.'cfg(not(any(target_os = "android", target_os = "linux")))'.dependencies]
 jemallocator = "^0.3"

bastion-executor/src/allocator.rs

@@ -1,5 +1,7 @@
-// Allocation selector import
-use numanji::*;
+unstable_api! {
+    // Allocation selector import
+    use numanji::*;
 
-// Drive selection of allocator here
-autoselect!();
+    // Drive selection of allocator here
+    autoselect!();
+}

bastion-executor/src/lib.rs

@@ -3,18 +3,15 @@
 //!
 //! NUMA-aware SMP based Fault-tolerant Executor
 //!
+//!
 
-// Allocator features
-#![feature(allocator_api)]
-#![feature(extern_types)]
-#![feature(core_intrinsics)]
-#![feature(libstd_sys_internals)]
-#![feature(thread_local)]
-#![feature(const_fn)]
 // Force missing implementations
 #![warn(missing_docs)]
 #![warn(missing_debug_implementations)]
 
+#[macro_use]
+mod macros;
+
 pub mod allocator;
 pub mod blocking_pool;
 pub mod distributor;

bastion-executor/src/macros.rs

@@ -0,0 +1,9 @@
+#[doc(hidden)]
+macro_rules! unstable_api {
+    ($($block:item)*) => {
+        $(
+            #[cfg(feature = "unstable")]
+            $block
+        )*
+    }
+}