Run composite manager

src/main.rs

@@ -4,13 +4,21 @@ use crate::task::*;
 
 fn main() {
     let wm_task = WMTask::start(TaskConfig::new("polytreewm")).unwrap();
+    let comp_task = CompTask::start(TaskConfig::new("picom")).unwrap();
+
     let wm_task_result = wm_task.wait();
+
+    comp_task.terminate();
+
     unsafe { libc::exit(wm_task_result.status()) }
 }
 
 #[derive(Debug)]
 struct WMTask(TaskInfo);
 
+#[derive(Debug)]
+struct CompTask(TaskInfo);
+
 impl Task for WMTask {
     fn new(info: TaskInfo) -> Self {
         Self(info)
@@ -20,3 +28,13 @@ impl Task for WMTask {
         &self.0
     }
 }
+
+impl Task for CompTask {
+    fn new(info: TaskInfo) -> Self {
+        Self(info)
+    }
+
+    fn info(&self) -> &TaskInfo {
+        &self.0
+    }
+}

src/task.rs

@@ -89,4 +89,14 @@ pub trait Task: Debug + Sized {
             TaskResult::new(self.info().clone(), status)
         }
     }
+
+    fn terminate(self) -> TaskResult {
+        unsafe {
+            libc::kill(self.info().pid(), libc::SIGKILL);
+            let status: i32 = 0;
+            libc::waitpid(self.info().pid(), status as *mut i32, 0);
+            let status = libc::WEXITSTATUS(status);
+            TaskResult::new(self.info().clone(), status)
+        }
+    }
 }