Vendor dependencies for 0.3.0 release

vendor/polling/examples/wait-signal.rs

@@ -0,0 +1,67 @@
+#[cfg(all(
+    any(
+        target_vendor = "apple",
+        target_os = "freebsd",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "dragonfly",
+    ),
+    not(polling_test_poll_backend),
+))]
+mod example {
+    use polling::os::kqueue::{PollerKqueueExt, Signal};
+    use polling::{Events, PollMode, Poller};
+
+    pub(super) fn main2() {
+        // Create a poller.
+        let poller = Poller::new().unwrap();
+
+        // Register SIGINT in the poller.
+        let sigint = Signal(rustix::process::Signal::INT.as_raw());
+        poller.add_filter(sigint, 1, PollMode::Oneshot).unwrap();
+
+        let mut events = Events::new();
+
+        println!("Press Ctrl+C to exit...");
+
+        // Wait for events.
+        poller.wait(&mut events, None).unwrap();
+
+        // Process events.
+        let ev = events.iter().next().unwrap();
+        match ev.key {
+            1 => {
+                println!("SIGINT received");
+            }
+            _ => unreachable!(),
+        }
+    }
+}
+
+#[cfg(all(
+    any(
+        target_vendor = "apple",
+        target_os = "freebsd",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "dragonfly",
+    ),
+    not(polling_test_poll_backend),
+))]
+fn main() {
+    example::main2();
+}
+
+#[cfg(not(all(
+    any(
+        target_vendor = "apple",
+        target_os = "freebsd",
+        target_os = "netbsd",
+        target_os = "openbsd",
+        target_os = "dragonfly",
+    ),
+    not(polling_test_poll_backend),
+)))]
+fn main() {
+    eprintln!("This example is only supported on kqueue-based platforms.");
+}