Init

2023-10-17 19:00:03 +02:00 · 2023-10-17 19:00:03 +02:00 · 828e08c6ce
commit 828e08c6ce
8 changed files with 564 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,3 @@
+/target
+bin/
+obj/
--- a/Cargo.lock
+++ b/Cargo.lock
@ -0,0 +1,345 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "async-channel"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81953c529336010edd6d8e358f886d9581267795c61b19475b71314bffa46d35"
+dependencies = [
+ "concurrent-queue",
+ "event-listener",
+ "futures-core",
+]
+
+[[package]]
+name = "async-io"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fc5b45d93ef0529756f812ca52e44c221b35341892d3dcc34132ac02f3dd2af"
+dependencies = [
+ "async-lock",
+ "autocfg",
+ "cfg-if",
+ "concurrent-queue",
+ "futures-lite",
+ "log",
+ "parking",
+ "polling",
+ "rustix",
+ "slab",
+ "socket2",
+ "waker-fn",
+]
+
+[[package]]
+name = "async-lock"
+version = "2.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "287272293e9d8c41773cec55e365490fe034813a2f172f502d6ddcf75b2f582b"
+dependencies = [
+ "event-listener",
+]
+
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+
+[[package]]
+name = "concurrent-queue"
+version = "2.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f057a694a54f12365049b0958a1685bb52d567f5593b355fbf685838e873d400"
+dependencies = [
+ "crossbeam-utils",
+]
+
+[[package]]
+name = "crossbeam-utils"
+version = "0.8.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a22b2d63d4d1dc0b7f1b6b2747dd0088008a9be28b6ddf0b1e7d335e3037294"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "errno"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3e13f66a2f95e32a39eaa81f6b95d42878ca0e1db0c7543723dfe12557e860"
+dependencies = [
+ "libc",
+ "windows-sys",
+]
+
+[[package]]
+name = "event-listener"
+version = "2.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0206175f82b8d6bf6652ff7d71a1e27fd2e4efde587fd368662814d6ec1d9ce0"
+
+[[package]]
+name = "fastrand"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e51093e27b0797c359783294ca4f0a911c270184cb10f85783b118614a1501be"
+dependencies = [
+ "instant",
+]
+
+[[package]]
+name = "ffichannels"
+version = "0.1.0"
+dependencies = [
+ "async-channel",
+ "async-io",
+ "async-lock",
+]
+
+[[package]]
+name = "futures-core"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4bca583b7e26f571124fe5b7561d49cb2868d79116cfa0eefce955557c6fee8c"
+
+[[package]]
+name = "futures-io"
+version = "0.3.28"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fff74096e71ed47f8e023204cfd0aa1289cd54ae5430a9523be060cdb849964"
+
+[[package]]
+name = "futures-lite"
+version = "1.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49a9d51ce47660b1e808d3c990b4709f2f415d928835a17dfd16991515c46bce"
+dependencies = [
+ "fastrand",
+ "futures-core",
+ "futures-io",
+ "memchr",
+ "parking",
+ "pin-project-lite",
+ "waker-fn",
+]
+
+[[package]]
+name = "hermit-abi"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
+
+[[package]]
+name = "instant"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "io-lifetimes"
+version = "1.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eae7b9aee968036d54dce06cebaefd919e4472e753296daccd6d344e3e2df0c2"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "windows-sys",
+]
+
+[[package]]
+name = "libc"
+version = "0.2.149"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a08173bc88b7955d1b3145aa561539096c421ac8debde8cbc3612ec635fee29b"
+
+[[package]]
+name = "linux-raw-sys"
+version = "0.3.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef53942eb7bf7ff43a617b3e2c1c4a5ecf5944a7c1bc12d7ee39bbb15e5c1519"
+
+[[package]]
+name = "log"
+version = "0.4.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
+
+[[package]]
+name = "memchr"
+version = "2.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
+
+[[package]]
+name = "parking"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e52c774a4c39359c1d1c52e43f73dd91a75a614652c825408eec30c95a9b2067"
+
+[[package]]
+name = "pin-project-lite"
+version = "0.2.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8afb450f006bf6385ca15ef45d71d2288452bc3683ce2e2cacc0d18e4be60b58"
+
+[[package]]
+name = "polling"
+version = "2.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4b2d323e8ca7996b3e23126511a523f7e62924d93ecd5ae73b333815b0eb3dce"
+dependencies = [
+ "autocfg",
+ "bitflags",
+ "cfg-if",
+ "concurrent-queue",
+ "libc",
+ "log",
+ "pin-project-lite",
+ "windows-sys",
+]
+
+[[package]]
+name = "rustix"
+version = "0.37.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4eb579851244c2c03e7c24f501c3432bed80b8f720af1d6e5b0e0f01555a035"
+dependencies = [
+ "bitflags",
+ "errno",
+ "io-lifetimes",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys",
+]
+
+[[package]]
+name = "slab"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f92a496fb766b417c996b9c5e57daf2f7ad3b0bebe1ccfca4856390e3d3bb67"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "socket2"
+version = "0.4.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64a4a911eed85daf18834cfaa86a79b7d266ff93ff5ba14005426219480ed662"
+dependencies = [
+ "libc",
+ "winapi",
+]
+
+[[package]]
+name = "waker-fn"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3c4517f54858c779bbcbf228f4fca63d121bf85fbecb2dc578cdf4a39395690"
+
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
+[[package]]
+name = "windows-sys"
+version = "0.48.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
+dependencies = [
+ "windows-targets",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
+dependencies = [
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
+]
+
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
+
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
+
+[[package]]
+name = "windows_i686_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
+
+[[package]]
+name = "windows_i686_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
+
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
+
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.48.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
--- a/Cargo.toml
+++ b/Cargo.toml
@ -0,0 +1,15 @@
+[package]
+name = "ffichannels"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+name = "ffi_channels"
+crate-type = ["cdylib"]
+
+[dependencies]
+async-channel = "1.9.0"
+async-io = "1.13.0"
+async-lock = "2.8.0"
--- a/FfiChannels/Ffi.cs
+++ b/FfiChannels/Ffi.cs
@ -0,0 +1,43 @@
+using System.Runtime.InteropServices;
+
+namespace FfiChannels
+{
+    [StructLayout(LayoutKind.Sequential)]
+    public struct ByteArray
+    {
+        public IntPtr data;
+        public int length;
+
+        public byte[] ToByteArray() {
+            var array = new byte[length];
+            Marshal.Copy(data, array, 0, length);
+            return array;
+        }
+    }
+
+    public delegate void Callback(ByteArray byteArray);
+
+    public static class Bindings {
+
+        [DllImport("ffi_channels")]
+        public static extern void send(byte[] data, int length);
+
+        [DllImport("ffi_channels")]
+        public static extern ByteArray receive();
+
+        [DllImport("ffi_channels")]
+        public static extern void register_callback(Callback cb);
+
+        [DllImport("ffi_channels")]
+        public static extern void start_listening();
+
+        public static Task<byte[]> ReceiveAsync() {
+            return Task.Run(() => {
+                Console.WriteLine("Receiving..");
+                var ptr = receive(); //blocking call
+                Console.WriteLine("Received!");
+                return ptr.ToByteArray();
+            });
+        }
+    }
+}
--- a/FfiChannels/FfiChannels.csproj
+++ b/FfiChannels/FfiChannels.csproj
@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <NativeOutputPath>../target/debug</NativeOutputPath>
+    <LibraryName>ffi_channels</LibraryName>
+  </PropertyGroup>
+
+  <ItemGroup>
+      <None Condition="$([MSBuild]::IsOsPlatform('MacOS'))" Include="$(NativeOutputPath)/lib$(LibraryName).dylib" CopyToOutputDirectory="PreserveNewest" />
+      <None Condition="$([MSBuild]::IsOsPlatform('Linux'))" Include="$(NativeOutputPath)/lib$(LibraryName).so" CopyToOutputDirectory="PreserveNewest" />
+      <None Condition="$([MSBuild]::IsOsPlatform('Windows'))" Include="$(NativeOutputPath)/$(LibraryName).dll" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
+</Project>
--- a/FfiChannels/Program.cs
+++ b/FfiChannels/Program.cs
@ -0,0 +1,25 @@
+using FfiChannels;
+
+Bindings.register_callback((bytes) => {
+    var data = bytes.ToByteArray();
+    Console.WriteLine($"Callback called, bytes: {string.Join(',',data)}");
+});
+Bindings.start_listening();
+
+Console.WriteLine("Press key to send");
+Console.ReadKey(true);
+
+Bindings.send(new byte[]{ 1,2,3,4,5,6,7,8,9,10 }, 10);
+
+Console.WriteLine("Press key to exit");
+Console.ReadKey(true);
+
+// var receiving = Bindings.ReceiveAsync();
+// Console.WriteLine("Press key to send");
+// Console.ReadKey(true);
+// Console.WriteLine("Hello world, sending data to Rust:");
+// Bindings.send(new byte[]{ 1,2,3,4,5,6,7,8,9,10 }, 10);
+// Console.WriteLine("Press a key to receive");
+// Console.ReadKey(true);
+// var data = await receiving;
+// Console.WriteLine($"Received: {string.Join(',',data)}");
--- a/ffichannels.sln
+++ b/ffichannels.sln
@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.5.002.0
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FfiChannels", "FfiChannels\FfiChannels.csproj", "{BD86F9D2-3857-47AA-B9E8-842FB91131CB}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{BD86F9D2-3857-47AA-B9E8-842FB91131CB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BD86F9D2-3857-47AA-B9E8-842FB91131CB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BD86F9D2-3857-47AA-B9E8-842FB91131CB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BD86F9D2-3857-47AA-B9E8-842FB91131CB}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {AFBE47FA-0D1A-4EBF-B552-B050F83A917C}
+	EndGlobalSection
+EndGlobal
--- a/src/lib.rs
+++ b/src/lib.rs
@ -0,0 +1,87 @@
+use std::{slice, thread};
+
+use async_channel::{Sender, Receiver, unbounded};
+use async_io::block_on;
+use async_lock::{OnceCell, RwLock};
+
+type Callback = extern "C" fn (ByteArray);
+
+static CHANNEL: OnceCell<(Sender<Vec<u8>>, Receiver<Vec<u8>>)> = OnceCell::new();
+static CALLBACK: RwLock<Option<Callback>> = RwLock::new(None);
+
+fn get_channel() -> &'static (Sender<Vec<u8>>, Receiver<Vec<u8>>) {
+    CHANNEL.get_or_init_blocking(|| {
+        println!("Initialized channel");
+        unbounded()
+    })
+}
+
+fn get_sender() -> &'static Sender<Vec<u8>> {
+    &get_channel().0
+}
+
+fn get_receiver() -> &'static Receiver<Vec<u8>> {
+    &get_channel().1
+}
+
+#[repr(C)]
+pub struct ByteArray {
+    data: *const u8,
+    length: usize
+}
+
+impl From<Vec<u8>> for ByteArray {
+    fn from(value: Vec<u8>) -> Self {
+        ByteArray { data: value.as_ptr(), length: value.len() }
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn register_callback(cb: Callback) {
+    block_on(async {
+        let mut writer = CALLBACK.write().await;
+        *writer = Some(cb);
+    });
+}
+
+#[no_mangle]
+pub extern "C" fn start_listening() {
+    let receiver = get_receiver().clone();
+    thread::spawn(move|| {
+        block_on(async {
+            println!("Start listening for received events");
+            loop {
+                let next = receiver.recv().await;
+                if let Ok(data) = next {
+                    println!("Received data: {:?}", data);
+                    let reader = CALLBACK.read().await;
+                    if reader.is_some() {
+                        println!("Calling callback");
+                        let cb = reader.unwrap();
+                        let bytes = ByteArray::from(data);
+                        cb(bytes);
+                    } else {
+                        println!("No callback");
+                    }
+                }
+            }
+        })
+    });
+}
+
+#[no_mangle]
+pub extern "C" fn send(data: *const u8, length: usize) {
+    let byte_slice = unsafe {
+        assert!(!data.is_null());
+        slice::from_raw_parts(data, length)
+    };
+
+    get_sender().send_blocking(byte_slice.to_vec()).unwrap();
+    println!("Received {} bytes, array: {:?}", length, byte_slice);
+}
+
+#[no_mangle]
+pub extern "C" fn receive() -> ByteArray {
+    let data = get_receiver().recv_blocking().unwrap();
+    ByteArray::from(data)
+}