7a75862570
Helps with the common coroutine exception-handling idiom:
std::exception_ptr ex;
try {
...
} catch (...) {
ex = std::current_exception();
}
// release resource(s)
maybe_rethrow_exception(std::move(ex));
return result;
63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
/*
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* Copyright 2016-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include <seastar/core/sstring.hh>
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#include <seastar/core/on_internal_error.hh>
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#include <functional>
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#include <system_error>
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namespace seastar { class logger; }
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typedef std::function<bool (const std::system_error &)> system_error_lambda_t;
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bool check_exception(system_error_lambda_t f);
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bool is_system_error_errno(int err_no);
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bool is_timeout_exception(std::exception_ptr e);
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class storage_io_error : public std::exception {
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private:
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std::error_code _code;
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std::string _what;
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public:
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storage_io_error(std::system_error& e) noexcept
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: _code{e.code()}
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, _what{std::string("Storage I/O error: ") + std::to_string(e.code().value()) + ": " + e.what()}
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{ }
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virtual const char* what() const noexcept override {
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return _what.c_str();
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}
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const std::error_code& code() const { return _code; }
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};
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// Rethrow exception if not null
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//
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// Helps with the common coroutine exception-handling idiom:
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//
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// std::exception_ptr ex;
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// try {
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// ...
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// } catch (...) {
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// ex = std::current_exception();
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// }
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//
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// // release resource(s)
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// maybe_rethrow_exception(std::move(ex));
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//
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// return result;
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//
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inline void maybe_rethrow_exception(std::exception_ptr ex) {
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if (ex) {
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std::rethrow_exception(std::move(ex));
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}
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}
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