From bf8a1ad8edacf6c0c3f7c11203caff9721939478 Mon Sep 17 00:00:00 2001
From: Andy Killorin <37423245+Speedy6451@users.noreply.github.com>
Date: Wed, 18 Dec 2024 23:22:35 -0500
Subject: [PATCH] async thru dylib

---
 .gitignore         |   1 +
 loaded/.gitignore  |   1 +
 loaded/Cargo.lock  |   7 +
 loaded/Cargo.toml  |   9 ++
 loaded/src/lib.rs  |  14 ++
 loader/.gitignore  |   1 +
 loader/Cargo.lock  | 357 +++++++++++++++++++++++++++++++++++++++++++++
 loader/Cargo.toml  |   9 ++
 loader/src/main.rs |  18 +++
 9 files changed, 417 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 loaded/.gitignore
 create mode 100644 loaded/Cargo.lock
 create mode 100644 loaded/Cargo.toml
 create mode 100644 loaded/src/lib.rs
 create mode 100644 loader/.gitignore
 create mode 100644 loader/Cargo.lock
 create mode 100644 loader/Cargo.toml
 create mode 100644 loader/src/main.rs

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b60de5b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+**/target
diff --git a/loaded/.gitignore b/loaded/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/loaded/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/loaded/Cargo.lock b/loaded/Cargo.lock
new file mode 100644
index 0000000..f2c96d0
--- /dev/null
+++ b/loaded/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "loaded"
+version = "0.1.0"
diff --git a/loaded/Cargo.toml b/loaded/Cargo.toml
new file mode 100644
index 0000000..9e6b57c
--- /dev/null
+++ b/loaded/Cargo.toml
@@ -0,0 +1,9 @@
+[lib]
+crate-type = ["dylib"]
+
+[package]
+name = "loaded"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/loaded/src/lib.rs b/loaded/src/lib.rs
new file mode 100644
index 0000000..f463fd7
--- /dev/null
+++ b/loaded/src/lib.rs
@@ -0,0 +1,14 @@
+use std::{future::Future, pin::Pin};
+
+pub async fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[no_mangle]
+pub fn add_wrapper(left: u64, right: u64) -> Pin<Box<dyn Future<Output = u64>>> {
+    Box::pin(add(left,right))
+}
+
+#[cfg(test)]
+mod tests {
+}
diff --git a/loader/.gitignore b/loader/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/loader/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/loader/Cargo.lock b/loader/Cargo.lock
new file mode 100644
index 0000000..01251bc
--- /dev/null
+++ b/loader/Cargo.lock
@@ -0,0 +1,357 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
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+ "windows-targets",
+]
+
+[[package]]
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+ "libloading",
+ "tokio",
+]
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+]
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+ "windows_x86_64_gnu",
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diff --git a/loader/Cargo.toml b/loader/Cargo.toml
new file mode 100644
index 0000000..635758b
--- /dev/null
+++ b/loader/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "loader"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+anyhow = "1.0.94"
+libloading = "0.8.6"
+tokio = { version = "1.42.0", features = ["full"] }
diff --git a/loader/src/main.rs b/loader/src/main.rs
new file mode 100644
index 0000000..2683925
--- /dev/null
+++ b/loader/src/main.rs
@@ -0,0 +1,18 @@
+use std::{future::Future, pin::Pin};
+
+use anyhow::Result;
+use libloading::{Library, Symbol};
+
+#[tokio::main]
+async fn main() -> Result<()> {
+    let lib = unsafe {Library::new("../loaded/target/release/libloaded.so")?};
+
+    let func: Symbol<unsafe extern fn(u64,u64) -> Pin<Box<dyn Future<Output = u64>>>> =  unsafe {lib.get(b"add_wrapper")?};
+
+    let  fut = unsafe{func(12,54)};
+    let out = (fut).await;
+
+    println!("returned {out}");
+
+    Ok(())
+}