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e2dc32f4ba
This PR replaces `decltype(auto)` with `auto` for C++ return type deduction and simplifies some templates. Pull Request resolved: https://github.com/pytorch/pytorch/pull/166537 Approved by: https://github.com/Skylion007
54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
// Copyright (c) Facebook, Inc. and its affiliates.
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// All rights reserved.
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//
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree.
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#pragma once
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#include <cstring>
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#include <system_error>
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#include <fmt/format.h>
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namespace fmt {
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template <>
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struct formatter<std::error_category> {
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constexpr auto parse(format_parse_context& ctx) const {
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return ctx.begin();
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}
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template <typename FormatContext>
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auto format(const std::error_category& cat, FormatContext& ctx) const {
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if (std::strcmp(cat.name(), "generic") == 0) {
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return fmt::format_to(ctx.out(), "errno");
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} else {
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return fmt::format_to(ctx.out(), "{} error", cat.name());
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}
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}
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};
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template <>
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struct formatter<std::error_code> {
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constexpr auto parse(format_parse_context& ctx) const {
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return ctx.begin();
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}
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template <typename FormatContext>
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auto format(const std::error_code& err, FormatContext& ctx) const {
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return fmt::format_to(
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ctx.out(), "({}: {} - {})", err.category(), err.value(), err.message());
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}
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};
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} // namespace fmt
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namespace c10d::detail {
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inline std::error_code lastError() noexcept {
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return std::error_code{errno, std::generic_category()};
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}
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} // namespace c10d::detail
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