Initial commit

- basic main.c implementation
- event_loop implementation

event_loop.h

@@ -0,0 +1,59 @@
+#ifndef __EVENT_LOOP_H
+#define __EVENT_LOOP_H
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <sys/epoll.h>
+#include <unistd.h>
+
+/*
+ * Type definitions
+ */
+typedef void (*loop_cb_t)(int fd, uint32_t events);
+
+/*
+ * Public API
+ */
+// Initialize the event loop.
+// Parameters:
+//  - callback  - callback to use in loop_wait
+// Returns:
+//  - true on success
+//  - false on failure
+// Remarks:
+//  - must be called before event loop is used
+bool loop_init(loop_cb_t callback);
+
+// Finalize the event loop.
+//  - must be called on app termination
+void loop_deinit();
+
+// Set callback for file descriptor event.
+// Remarks:
+//  - this callback gets called in loop_wait
+void loop_set_callback(loop_cb_t callback);
+
+// Call epoll_ctl.
+// Parameters:
+//  - op        - op
+//  - fd        - fd
+//  - event     - event
+// Returns:
+//  - true on success
+//  - false on failure
+// Remarks:
+//  - just calls epoll_ctl
+bool loop_ctl(int op, int fd, struct epoll_event *event);
+
+// Call epoll_wait and process the events.
+// Returns:
+//  - true on success
+//  - false on failure
+// Remarks:
+//  - you should terminate the app if this function
+//    fails
+bool loop_wait();
+
+
+#endif