109 lines
5.3 KiB
C
109 lines
5.3 KiB
C
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// Copyright 2022 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// -----------------------------------------------------------------------------
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// File: log/internal/strip.h
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// -----------------------------------------------------------------------------
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//
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#ifndef ABSL_LOG_INTERNAL_STRIP_H_
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#define ABSL_LOG_INTERNAL_STRIP_H_
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#include "absl/base/attributes.h" // IWYU pragma: keep
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#include "absl/base/log_severity.h"
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#include "absl/log/internal/log_message.h"
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#include "absl/log/internal/nullstream.h"
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// `ABSL_LOGGING_INTERNAL_LOG_*` evaluates to a temporary `LogMessage` object or
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// to a related object with a compatible API but different behavior. This set
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// of defines comes in three flavors: vanilla, plus two variants that strip some
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// logging in subtly different ways for subtly different reasons (see below).
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#if defined(STRIP_LOG) && STRIP_LOG
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// Attribute for marking variables used in implementation details of logging
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// macros as unused, but only when `STRIP_LOG` is defined.
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// With `STRIP_LOG` on, not marking them triggers `-Wunused-but-set-variable`,
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// With `STRIP_LOG` off, marking them triggers `-Wused-but-marked-unused`.
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//
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// TODO(b/290784225): Replace this macro with attribute [[maybe_unused]] when
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// Abseil stops supporting C++14.
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#define ABSL_LOG_INTERNAL_ATTRIBUTE_UNUSED_IF_STRIP_LOG ABSL_ATTRIBUTE_UNUSED
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#define ABSL_LOGGING_INTERNAL_LOG_INFO ::absl::log_internal::NullStream()
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#define ABSL_LOGGING_INTERNAL_LOG_WARNING ::absl::log_internal::NullStream()
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#define ABSL_LOGGING_INTERNAL_LOG_ERROR ::absl::log_internal::NullStream()
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#define ABSL_LOGGING_INTERNAL_LOG_FATAL ::absl::log_internal::NullStreamFatal()
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#define ABSL_LOGGING_INTERNAL_LOG_QFATAL ::absl::log_internal::NullStreamFatal()
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#define ABSL_LOGGING_INTERNAL_LOG_DFATAL \
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::absl::log_internal::NullStreamMaybeFatal(::absl::kLogDebugFatal)
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#define ABSL_LOGGING_INTERNAL_LOG_LEVEL(severity) \
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::absl::log_internal::NullStreamMaybeFatal(absl_log_internal_severity)
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// Fatal `DLOG`s expand a little differently to avoid being `[[noreturn]]`.
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#define ABSL_LOGGING_INTERNAL_DLOG_FATAL \
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::absl::log_internal::NullStreamMaybeFatal(::absl::LogSeverity::kFatal)
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#define ABSL_LOGGING_INTERNAL_DLOG_QFATAL \
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::absl::log_internal::NullStreamMaybeFatal(::absl::LogSeverity::kFatal)
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#define ABSL_LOG_INTERNAL_CHECK(failure_message) ABSL_LOGGING_INTERNAL_LOG_FATAL
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#define ABSL_LOG_INTERNAL_QCHECK(failure_message) \
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ABSL_LOGGING_INTERNAL_LOG_QFATAL
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#else // !defined(STRIP_LOG) || !STRIP_LOG
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#define ABSL_LOG_INTERNAL_ATTRIBUTE_UNUSED_IF_STRIP_LOG
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#define ABSL_LOGGING_INTERNAL_LOG_INFO \
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::absl::log_internal::LogMessage( \
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__FILE__, __LINE__, ::absl::log_internal::LogMessage::InfoTag{})
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#define ABSL_LOGGING_INTERNAL_LOG_WARNING \
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::absl::log_internal::LogMessage( \
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__FILE__, __LINE__, ::absl::log_internal::LogMessage::WarningTag{})
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#define ABSL_LOGGING_INTERNAL_LOG_ERROR \
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::absl::log_internal::LogMessage( \
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__FILE__, __LINE__, ::absl::log_internal::LogMessage::ErrorTag{})
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#define ABSL_LOGGING_INTERNAL_LOG_FATAL \
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::absl::log_internal::LogMessageFatal(__FILE__, __LINE__)
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#define ABSL_LOGGING_INTERNAL_LOG_QFATAL \
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::absl::log_internal::LogMessageQuietlyFatal(__FILE__, __LINE__)
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#define ABSL_LOGGING_INTERNAL_LOG_DFATAL \
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::absl::log_internal::LogMessage(__FILE__, __LINE__, ::absl::kLogDebugFatal)
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#define ABSL_LOGGING_INTERNAL_LOG_LEVEL(severity) \
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::absl::log_internal::LogMessage(__FILE__, __LINE__, \
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absl_log_internal_severity)
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// Fatal `DLOG`s expand a little differently to avoid being `[[noreturn]]`.
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#define ABSL_LOGGING_INTERNAL_DLOG_FATAL \
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::absl::log_internal::LogMessageDebugFatal(__FILE__, __LINE__)
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#define ABSL_LOGGING_INTERNAL_DLOG_QFATAL \
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::absl::log_internal::LogMessageQuietlyDebugFatal(__FILE__, __LINE__)
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// These special cases dispatch to special-case constructors that allow us to
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// avoid an extra function call and shrink non-LTO binaries by a percent or so.
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#define ABSL_LOG_INTERNAL_CHECK(failure_message) \
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::absl::log_internal::LogMessageFatal(__FILE__, __LINE__, failure_message)
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#define ABSL_LOG_INTERNAL_QCHECK(failure_message) \
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::absl::log_internal::LogMessageQuietlyFatal(__FILE__, __LINE__, \
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failure_message)
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#endif // !defined(STRIP_LOG) || !STRIP_LOG
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// This part of a non-fatal `DLOG`s expands the same as `LOG`.
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#define ABSL_LOGGING_INTERNAL_DLOG_INFO ABSL_LOGGING_INTERNAL_LOG_INFO
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#define ABSL_LOGGING_INTERNAL_DLOG_WARNING ABSL_LOGGING_INTERNAL_LOG_WARNING
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#define ABSL_LOGGING_INTERNAL_DLOG_ERROR ABSL_LOGGING_INTERNAL_LOG_ERROR
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#define ABSL_LOGGING_INTERNAL_DLOG_DFATAL ABSL_LOGGING_INTERNAL_LOG_DFATAL
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#define ABSL_LOGGING_INTERNAL_DLOG_LEVEL ABSL_LOGGING_INTERNAL_LOG_LEVEL
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#endif // ABSL_LOG_INTERNAL_STRIP_H_
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