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