From 1650906f010574e8810c8b0b98334e22fac5894d Mon Sep 17 00:00:00 2001
From: Dennis Kobert <dennis@kobert.dev>
Date: Sun, 12 Jan 2020 03:47:14 +0100
Subject: Restructuring

---
 src/solvers/gpu/manager.rs | 104 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 src/solvers/gpu/manager.rs

(limited to 'src/solvers/gpu/manager.rs')

diff --git a/src/solvers/gpu/manager.rs b/src/solvers/gpu/manager.rs
new file mode 100644
index 0000000..1dd6a4d
--- /dev/null
+++ b/src/solvers/gpu/manager.rs
@@ -0,0 +1,104 @@
+use std::sync::mpsc::{Receiver, Sender, channel};
+use std::thread::JoinHandle;
+use super::*;
+
+#[derive(Debug)]
+struct RequestBuffer {
+    mask_buff: Vec<u64>,
+    pointer: usize,
+}
+
+impl RequestBuffer {
+    pub fn new(size: usize) -> Self {
+        RequestBuffer {
+            mask_buff: vec![0; size],
+            pointer: 0,
+        }
+    }
+    pub fn read(&mut self, request: CheckRequest) -> Option<&[u64]> {
+        self.mask_buff[self.pointer] = request.bitmask;
+        self.pointer += 1;
+        if self.pointer == self.mask_buff.len() {
+            self.pointer = 0;
+            return Some(self.mask_buff.as_ref());
+        }
+        None
+    }
+}
+
+pub struct OclManager {
+    job_id: u64,
+    host_sender: Sender<Message>,
+    output_sender: Sender<Message>,
+    reciever: Receiver<Message>,
+    buffers: Vec<RequestBuffer>,
+    output_handle: JoinHandle<String>,
+    host_handle: JoinHandle<String>,
+}
+
+impl OclManager {
+    pub fn launch_sevice(
+        permutations: &[&[u32]],
+        permutations_mask: &[u64],
+        n: u32,
+        // Workgroup size, set to 0 for max
+        wg_size: u32,
+    ) -> (Sender<Message>, JoinHandle<String>) {
+        let (h, w) = crate::solvers::wall_stats(n);
+        let src = include_str!("check.cl");
+        let (output_sender, output_handle) =
+            super::output::Output::launch_sevice(permutations, permutations_mask, n, h, w);
+        let (host_sender, host_handle) =
+            super::host::Host::launch_sevice(permutations_mask, n, h, w, wg_size as usize, src);
+
+        let (receiver, sender) = channel();
+
+        let mut buffers = Vec::with_capacity((n - h + 1) as usize);
+        for _ in 0..=(n - h) {
+            buffers.push(RequestBuffer::new(wg_size as usize));
+        }
+
+        let manager = Self {
+            0,
+            host_sender,
+            output_sender,
+            receiver,
+            buffers,
+            output_handle,
+            host_handle,
+        }
+        (sender, 
+        std::thread::Builder::new()
+            .name("GPU Manager Deamon".into())
+            .spawn(move || {
+                manager.run();
+            })
+            .unwrap())
+        
+    }
+
+    fn run(mut self) {
+        loop {
+            match self.reciever.recv().expect("Channel to GPU Manager broke") {
+                Message::CheckRequest(request) => {
+                    if let Some(buffer) = self.buffers[request.queue as usize].read(request) {
+                        self.host_sender
+                            .send(Message::HostMessage((self.job_id, buffer.0.into())));
+                        self.output_sender
+                            .send(Message::OutputMessage((self.job_id, buffer.1.into())));
+                        self.job_id += 1;
+                    }
+                }
+                Message::Terminate => {
+                    panic!("flush buffers");
+                    self.host_sender.send(Message::Terminate);
+                    self.host_handle.join();
+                    self.output_sender.send(Message::Terminate);
+                    self.output_handle.join();
+                    return;
+                }
+                _ => println!("Invalid MessageType"),
+            }
+        }
+    }
+}
-- 
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