fix: fixes for shell/Terminal issues and CPU burn

2026-05-06 22:04:57 +02:00
parent 6b500ec7cb
commit 2523340d08
4 changed files with 89 additions and 17 deletions
@@ -352,6 +352,25 @@ static constexpr uint8_t SC_DOWN  = 0x50;
 static constexpr uint8_t SC_LEFT  = 0x4B;
 static constexpr uint8_t SC_RIGHT = 0x4D;

+static bool empty_key_event(const Montauk::KeyEvent& ev) {
+    return ev.scancode == 0 && ev.ascii == 0 && !ev.pressed &&
+           !ev.shift && !ev.ctrl && !ev.alt;
+}
+
+static void wait_key_event(Montauk::KeyEvent* out) {
+    if (!out) return;
+
+    for (;;) {
+        montauk::getkey(out);
+        if (!empty_key_event(*out))
+            return;
+
+        uint64_t serial = montauk::input_wait(0, 0);
+        if (!montauk::is_key_available())
+            montauk::input_wait(serial, ~0ULL);
+    }
+}
+
 // ---- Entry point ----

 extern "C" void _start() {
@@ -380,13 +399,8 @@ extern "C" void _start() {
    prompt();

    while (true) {
-        if (!montauk::is_key_available()) {
-            montauk::yield();
-            continue;
-        }
-
        Montauk::KeyEvent ev;
-        montauk::getkey(&ev);
+        wait_key_event(&ev);

        if (!ev.pressed) continue;