Seastar
High performance C++ framework for concurrent servers
All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Modules Pages
iostream.hh
1/*
2 * This file is open source software, licensed to you under the terms
3 * of the Apache License, Version 2.0 (the "License"). See the NOTICE file
4 * distributed with this work for additional information regarding copyright
5 * ownership. You may not use this file except in compliance with the License.
6 *
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing,
12 * software distributed under the License is distributed on an
13 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14 * KIND, either express or implied. See the License for the
15 * specific language governing permissions and limitations
16 * under the License.
17 */
18/*
19 * Copyright (C) 2024 ScyllaDB
20 */
21
22#pragma once
23
24#include <type_traits>
25#include <seastar/core/future.hh>
26#include <seastar/core/iostream.hh>
27#include <seastar/util/modules.hh>
28
29namespace seastar {
30namespace util {
31SEASTAR_MODULE_EXPORT_BEGIN
32
40template <typename W>
41requires std::is_invocable_r_v<future<>, W, output_stream<char>&>
42future<> write_to_stream_and_close(output_stream<char>&& out_, W writer) {
43 output_stream<char> out = std::move(out_);
44 std::exception_ptr ex;
45 try {
46 co_await writer(out);
47 co_await out.flush();
48 } catch (...) {
49 ex = std::current_exception();
50 }
51 co_await out.close();
52 if (ex) {
53 co_await coroutine::return_exception_ptr(std::move(ex));
54 }
55}
56
57SEASTAR_MODULE_EXPORT_END
58} // util namespace
59} // seastar namespace
60
Seastar API namespace.
Definition: abort_on_ebadf.hh:26