|
|
|
// Copyright (c) 2016 The Bitcoin Core developers
|
|
|
|
// Distributed under the MIT software license, see the accompanying
|
|
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
|
|
|
|
#ifndef BITCOIN_SUPPORT_EVENTS_H
|
|
|
|
#define BITCOIN_SUPPORT_EVENTS_H
|
|
|
|
|
|
|
|
#include <ios>
|
|
|
|
#include <memory>
|
|
|
|
|
|
|
|
#include <event2/event.h>
|
|
|
|
#include <event2/http.h>
|
|
|
|
|
|
|
|
#define MAKE_RAII(type) \
|
|
|
|
/* deleter */\
|
|
|
|
struct type##_deleter {\
|
|
|
|
void operator()(struct type* ob) {\
|
|
|
|
type##_free(ob);\
|
|
|
|
}\
|
|
|
|
};\
|
|
|
|
/* unique ptr typedef */\
|
|
|
|
typedef std::unique_ptr<struct type, type##_deleter> raii_##type
|
|
|
|
|
|
|
|
MAKE_RAII(event_base);
|
|
|
|
MAKE_RAII(event);
|
|
|
|
MAKE_RAII(evhttp);
|
|
|
|
MAKE_RAII(evhttp_request);
|
|
|
|
MAKE_RAII(evhttp_connection);
|
|
|
|
|
|
|
|
inline raii_event_base obtain_event_base() {
|
|
|
|
auto result = raii_event_base(event_base_new());
|
|
|
|
if (!result.get())
|
|
|
|
throw std::runtime_error("cannot create event_base");
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
inline raii_event obtain_event(struct event_base* base, evutil_socket_t s, short events, event_callback_fn cb, void* arg) {
|
|
|
|
return raii_event(event_new(base, s, events, cb, arg));
|
|
|
|
}
|
|
|
|
|
|
|
|
inline raii_evhttp obtain_evhttp(struct event_base* base) {
|
|
|
|
return raii_evhttp(evhttp_new(base));
|
|
|
|
}
|
|
|
|
|
|
|
|
inline raii_evhttp_request obtain_evhttp_request(void(*cb)(struct evhttp_request *, void *), void *arg) {
|
|
|
|
return raii_evhttp_request(evhttp_request_new(cb, arg));
|
|
|
|
}
|
|
|
|
|
|
|
|
inline raii_evhttp_connection obtain_evhttp_connection_base(struct event_base* base, std::string host, uint16_t port) {
|
|
|
|
auto result = raii_evhttp_connection(evhttp_connection_base_new(base, nullptr, host.c_str(), port));
|
|
|
|
if (!result.get())
|
|
|
|
throw std::runtime_error("create connection failed");
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif // BITCOIN_SUPPORT_EVENTS_H
|