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authorWladimir J. van der Laan <laanwj@gmail.com>2017-01-05 11:10:40 +0100
committerWladimir J. van der Laan <laanwj@gmail.com>2017-01-05 11:11:17 +0100
commitcfe41d7a6034158eda76f6344406373786decb0e (patch)
treea59ee53337e0d00d068c99f53379c5f55529febd /src/support
parentc4b7d4f79c85bef332858579698f3ec7fd36f68b (diff)
parent05a55a639b6cd01b06be285db53edccdaf2ca189 (diff)
Merge #9387: [Refactor] RAII of libevent stuff using unique ptrs with deleters
05a55a6 Added EVENT_CFLAGS to test makefile to explicitly include libevent headers. (Karl-Johan Alm) 280a559 Added some simple tests for the RAII-style events. (Karl-Johan Alm) 7f7f102 Switched bitcoin-cli.cpp to use RAII unique pointers with deleters. (Karl-Johan Alm) e5534d2 Added std::unique_ptr<> wrappers with deleters for libevent modules. (Karl-Johan Alm)
Diffstat (limited to 'src/support')
-rw-r--r--src/support/events.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/src/support/events.h b/src/support/events.h
new file mode 100644
index 0000000000..4f2f3cf9ef
--- /dev/null
+++ b/src/support/events.h
@@ -0,0 +1,56 @@
+// 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);
+
+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;
+}
+
+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));
+}
+
+raii_evhttp obtain_evhttp(struct event_base* base) {
+ return raii_evhttp(evhttp_new(base));
+}
+
+raii_evhttp_request obtain_evhttp_request(void(*cb)(struct evhttp_request *, void *), void *arg) {
+ return raii_evhttp_request(evhttp_request_new(cb, arg));
+}
+
+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, NULL, host.c_str(), port));
+ if (!result.get())
+ throw std::runtime_error("create connection failed");
+ return result;
+}
+
+#endif // BITCOIN_SUPPORT_EVENTS_H