initial sleep trigger implementation

Author: cpetig

crates/cpp/tests/symmetric_async/Cargo.toml

@@ -0,0 +1,3 @@
+[workspace]
+members = ["sleep"]
+resolver = "2"

crates/cpp/tests/symmetric_async/sleep/Cargo.toml

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+[package]
+name = "sleep"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+symmetric_executor = { version = "0.1.0", path = "../../../../symmetric_executor" }
+
+[lib]
+crate-type = ["cdylib"]

crates/cpp/tests/symmetric_async/sleep/build.rs

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+use std::env;
+
+fn main() {
+    let out = env::var_os("OUT_DIR").unwrap();
+    println!(
+        r"cargo:rustc-link-search={}/../../../deps",
+        out.into_string().unwrap()
+    );
+}

crates/cpp/tests/symmetric_async/sleep/src/lib.rs

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+#[link(name = "symmetric_executor")]
+extern "C" {
+    fn symmetricX3AruntimeX2Fsymmetric_executorX400X2E1X2E0X00X5BstaticX5Devent_subscriptionX2Efrom_timeout(nanoseconds: u64) -> *mut ();
+}
+
+#[no_mangle]
+unsafe extern "C" fn async_sleep(
+    args: *const (),
+    _results: *mut (),
+) -> *mut () {
+    let nanoseconds = *args.cast::<u64>();
+    symmetricX3AruntimeX2Fsymmetric_executorX400X2E1X2E0X00X5BstaticX5Devent_subscriptionX2Efrom_timeout(nanoseconds)
+}