Merge pull request #2826 from RyanDwyer/common-eventloop

Implement common event loop for swaybar and swaylock

1 files changed, 54 insertions, 0 deletions

diff --git a/include/loop.h b/include/loop.h
new file mode 100644
index 00000000..2f608eda
--- /dev/null
+++ b/include/loop.h
@@ -0,0 +1,54 @@
+#ifndef _SWAY_LOOP_H
+#define _SWAY_LOOP_H
+#include <stdbool.h>
+
+/**
+ * This is an event loop system designed for sway clients, not sway itself.
+ *
+ * The loop consists of file descriptors and timers. Typically the Wayland
+ * display's file descriptor will be one of the fds in the loop.
+ */
+
+struct loop;
+struct loop_timer;
+
+/**
+ * Create an event loop.
+ */
+struct loop *loop_create(void);
+
+/**
+ * Destroy the event loop (eg. on program termination).
+ */
+void loop_destroy(struct loop *loop);
+
+/**
+ * Poll the event loop. This will block until one of the fds has data.
+ */
+void loop_poll(struct loop *loop);
+
+/**
+ * Add a file descriptor to the loop.
+ */
+void loop_add_fd(struct loop *loop, int fd, short mask,
+                void (*func)(int fd, short mask, void *data), void *data);
+
+/**
+ * Add a timer to the loop.
+ *
+ * When the timer expires, the timer will be removed from the loop and freed.
+ */
+struct loop_timer *loop_add_timer(struct loop *loop, int ms,
+                void (*callback)(void *data), void *data);
+
+/**
+ * Remove a file descriptor from the loop.
+ */
+bool loop_remove_fd(struct loop *loop, int fd);
+
+/**
+ * Remove a timer from the loop.
+ */
+bool loop_remove_timer(struct loop *loop, struct loop_timer *timer);
+
+#endif