136 lines
3.1 KiB
C++
136 lines
3.1 KiB
C++
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <memory>
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#include <folly/io/async/EventUtil.h>
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#include <folly/portability/Event.h>
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namespace folly {
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class EventBase;
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class EventBaseEvent {
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public:
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EventBaseEvent() = default;
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~EventBaseEvent() {
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if (userData_ && freeFn_) {
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freeFn_(userData_);
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}
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}
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EventBaseEvent(const EventBaseEvent&) = delete;
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EventBaseEvent& operator=(const EventBaseEvent&) = delete;
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typedef void (*FreeFunction)(void* userData);
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const struct event* getEvent() const {
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return &event_;
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}
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struct event* getEvent() {
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return &event_;
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}
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bool isEventRegistered() const {
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return EventUtil::isEventRegistered(&event_);
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}
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libevent_fd_t eb_ev_fd() const {
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return event_.ev_fd;
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}
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short eb_ev_events() const {
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return event_.ev_events;
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}
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int eb_ev_res() const {
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return event_.ev_res;
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}
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void* getUserData() {
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return userData_;
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}
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void setUserData(void* userData) {
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userData_ = userData;
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}
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void setUserData(void* userData, FreeFunction freeFn) {
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userData_ = userData;
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freeFn_ = freeFn;
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}
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void eb_event_set(
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libevent_fd_t fd,
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short events,
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void (*callback)(libevent_fd_t, short, void*),
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void* arg) {
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event_set(&event_, fd, events, callback, arg);
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}
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void eb_signal_set(
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int signum,
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void (*callback)(libevent_fd_t, short, void*),
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void* arg) {
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event_set(&event_, signum, EV_SIGNAL | EV_PERSIST, callback, arg);
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}
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void eb_timer_set(void (*callback)(libevent_fd_t, short, void*), void* arg) {
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event_set(&event_, -1, 0, callback, arg);
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}
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void eb_ev_base(EventBase* evb);
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EventBase* eb_ev_base() const {
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return evb_;
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}
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int eb_event_base_set(EventBase* evb);
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int eb_event_add(const struct timeval* timeout);
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int eb_event_del();
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protected:
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struct event event_;
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EventBase* evb_{nullptr};
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void* userData_{nullptr};
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FreeFunction freeFn_{nullptr};
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};
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class EventBaseBackendBase {
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public:
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using Event = EventBaseEvent;
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using FactoryFunc =
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std::function<std::unique_ptr<folly::EventBaseBackendBase>()>;
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EventBaseBackendBase() = default;
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virtual ~EventBaseBackendBase() = default;
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EventBaseBackendBase(const EventBaseBackendBase&) = delete;
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EventBaseBackendBase& operator=(const EventBaseBackendBase&) = delete;
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virtual event_base* getEventBase() = 0;
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virtual int eb_event_base_loop(int flags) = 0;
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virtual int eb_event_base_loopbreak() = 0;
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virtual int eb_event_add(Event& event, const struct timeval* timeout) = 0;
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virtual int eb_event_del(Event& event) = 0;
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};
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} // namespace folly
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