First messy io_uring impl

Cargo.toml

@@ -8,4 +8,5 @@ address = "0.11.0"
 clap = { version = "4.5.23", features = ["derive"] }
 image = "0.25.5"
 io-uring = "0.7.3"
+libc = "0.2.169"
 tokio = "1.42.0"

src/flutr.rs

@@ -1,16 +1,18 @@
-use crate::pixelmsgs::PixelMsgs;
+use crate::pixelmsgs::PixelStringMsgs;
 use address::Host;
-use io_uring::{opcode, types, IoUring};
+use io_uring::{opcode, types, IoUring, Submitter};
+use libc::c_void;
+use libc::iovec;
 use std::{io::Write, net::TcpStream, os::fd::AsRawFd};
 
 pub struct FlutR {
     stream: TcpStream,
     stream_fd: i32,
-    msgs: PixelMsgs,
+    msgs: PixelStringMsgs,
 }
 
 impl FlutR {
-    pub fn new(host: Host, port: u16, msgs: PixelMsgs) -> Result<Self, std::io::Error> {
+    pub fn new(host: Host, port: u16, msgs: PixelStringMsgs) -> Result<Self, std::io::Error> {
         let stream = TcpStream::connect(format!("{host}:{port}"))?;
         let stream_fd = stream.as_raw_fd();
         Ok(FlutR {
@@ -21,20 +23,45 @@ impl FlutR {
     }
 
     pub fn flut(&mut self) {
-        loop {
-            //self.write_sequential();
+        unsafe {
             self.write_io_uring();
+            //self.write_sequential();
         }
     }
 
     fn write_sequential(&mut self) {
-        for msg in self.msgs.clone() {
-            let _ = self.stream.write(&msg);
+        loop {
+            for msg in self.msgs.clone() {
+                let _ = self.stream.write(&msg);
+            }
+            let _ = self.stream.flush();
         }
-        let _ = self.stream.flush();
     }
 
-    fn write_io_uring(&mut self) {
-        for msg in self.msgs.clone() {}
+    unsafe fn write_io_uring(&mut self) {
+        let mut ring = IoUring::new(8).unwrap();
+
+        let buffer_len: usize = self.msgs.len() * 11;
+        let buffer: iovec = iovec {
+            iov_base: self.msgs.as_mut_ptr() as *mut c_void,
+            iov_len: buffer_len,
+        };
+        ring.submitter().register_buffers(&[buffer]);
+
+        let write_op = opcode::WriteFixed::new(
+            io_uring::types::Fd(self.stream_fd),
+            buffer.iov_base as *const u8,
+            buffer_len as u32,
+            0,
+        )
+        .build();
+
+        loop {
+            while ring.submission().is_full() {
+                ring.submission().sync();
+            }
+            ring.submission().push(&write_op).unwrap();
+            ring.submit().unwrap();
+        }
     }
 }

src/main.rs

@@ -10,7 +10,7 @@ mod pixelmsgs;
 
 use flutr::FlutR;
 use pixelmsgs::Add;
-use pixelmsgs::PixelMsgs;
+use pixelmsgs::PixelStringMsgs;
 
 #[derive(Parser, Debug)]
 #[command(version, about, long_about = None)]
@@ -31,9 +31,7 @@ fn main() {
     flutr.flut();
 }
 
-fn parse_image_to_msgs(path: &PathBuf) -> PixelMsgs {
-    let mut result = PixelMsgs::default();
-
+fn parse_image_to_msgs(path: &PathBuf) -> PixelStringMsgs {
     let image_result = parse_image(path);
 
     let image = match image_result {
@@ -42,6 +40,7 @@ fn parse_image_to_msgs(path: &PathBuf) -> PixelMsgs {
     };
 
     let rgb_image = image.into_rgb8();
+    let mut result = PixelStringMsgs::with_capacity(rgb_image.len());
     for pixel in rgb_image.enumerate_pixels() {
         result.add(pixel);
     }

src/pixelmsgs.rs

@@ -2,8 +2,8 @@ use image::Rgb;
 
 pub type PixelBinaryMsg = [u8; 11];
 pub type PixelBinaryMsgs = Vec<PixelBinaryMsg>;
-pub type PixelStringMsg<'a> = &'a [u8];
-pub type PixelStringMsgs<'a> = Vec<PixelStringMsg<'a>>;
+pub type PixelStringMsg = Box<[u8]>;
+pub type PixelStringMsgs = Vec<PixelStringMsg>;
 
 pub trait Add {
     fn add(&mut self, item: (u32, u32, &Rgb<u8>));
@@ -25,13 +25,16 @@ impl Add for PixelBinaryMsgs {
     }
 }
 
-impl<'a> Add for PixelStringMsgs<'a> {
+impl Add for PixelStringMsgs {
     fn add(&mut self, item: (u32, u32, &Rgb<u8>)) {
         let color: &Rgb<u8> = item.2;
         let r = color.0[0];
         let g = color.0[1];
         let b = color.0[2];
-        let msg = format!("PX {} {} {r:02x}{g:02x}{b:02x}\n", item.0, item.1).as_bytes();
-        self.push(msg.to_owned());
+        let msg = format!("PX {} {} {r:02x}{g:02x}{b:02x}\n", item.0, item.1)
+            .as_bytes()
+            .to_vec()
+            .into_boxed_slice();
+        self.push(msg);
     }
 }