1 files changed, 30 insertions, 0 deletions
diff --git a/src/looper.hh b/src/looper.hh
index 2f4c672..092dfe5 100644
--- a/src/looper.hh
+++ b/src/looper.hh
@@ -1,6 +1,7 @@
 #ifndef LOOPER_HH
 #define LOOPER_HH
 
+#include <chrono>
 #include <cstdint>
 #include <functional>
 #include <memory>
@@ -15,6 +16,8 @@ constexpr static uint8_t EVENT_READ = 1;
 constexpr static uint8_t EVENT_WRITE = 2;
 constexpr static uint8_t EVENT_ERROR = 4;
 
+class Hook;
+
 class Looper {
  public:
   virtual ~Looper() = default;
@@ -32,12 +35,39 @@ class Looper {
   virtual bool run(logger::Logger& logger) = 0;
   virtual void quit() = 0;
 
+  virtual void add_hook(Hook* hook) = 0;
+  virtual void remove_hook(Hook* hook) = 0;
+
  protected:
   Looper() = default;
   Looper(Looper const&) = delete;
   Looper& operator=(Looper const&) = delete;
 };
 
+class HookHelper {
+ public:
+  virtual ~HookHelper() = default;
+
+  virtual void monitor(int fd, uint8_t events) = 0;
+  virtual void timeout(std::chrono::milliseconds timeout) = 0;
+
+ protected:
+  HookHelper() = default;
+  HookHelper(HookHelper const&) = delete;
+  HookHelper& operator=(HookHelper const&) = delete;
+};
+
+class Hook {
+ public:
+  virtual ~Hook() = default;
+
+  virtual void before(HookHelper& helper) = 0;
+  virtual void after() = 0;
+
+ protected:
+  Hook() = default;
+};
+
 [[nodiscard]]
 std::unique_ptr<Looper> create();