Import of the watch repository from Pebble

src/fw/kernel/event_loop.h

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2024 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "kernel/events.h"
+
+#include <stdbool.h>
+
+//! Adds an event to the launcher's queue that will call the callback with
+//! arbitrary data as argument. Make sure that data points to memory that lives
+//! past the point of calling this function.
+//! @param callback Function pointer to the callback to be called
+//! @param data Pointer to arbitrary data that will be passed as an argument to the callback
+void launcher_task_add_callback(CallbackEventCallback callback, void *data);
+
+bool launcher_task_is_current_task(void);
+
+//! Increment or decrement a reference count of services that want the launcher
+//! to block pop-ups; used by getting started and firmware update
+void launcher_block_popups(bool ignore);
+
+//! Returns true if popups are currently being blocked
+bool launcher_popups_are_blocked(void);
+
+void launcher_main_loop(void);
+
+//! Cancel the force quit timer that may currently be running if the back button
+//! was pressed down.
+void launcher_cancel_force_quit(void);