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#ifndef LOOPER_HH
#define LOOPER_HH
#include <chrono>
#include <cstdint>
#include <functional>
#include <memory>
namespace logger {
class Logger;
} // namespace logger
namespace looper {
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;
virtual void add(int fd, uint8_t events,
std::function<void(uint8_t)> callback) = 0;
virtual void update(int fd, uint8_t events) = 0;
virtual void remove(int fd) = 0;
// Returned id is never 0
virtual uint32_t schedule(double delay,
std::function<void(uint32_t)> callback) = 0;
virtual void cancel(uint32_t id) = 0;
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();
} // namespace looper
#endif // LOOPER_HH
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