Init.h

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/*
 * Copyright 2017-present Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#pragma once

/*
 * This file contains function to help configure the logging library behavior
 * during program start-up.
 */

#include <folly/Range.h>

namespace folly {

void initLogging(folly::StringPiece configString = "");

void initLoggingOrDie(folly::StringPiece configString = "");

const char* getBaseLoggingConfig();

} // namespace folly

#define FOLLY_INIT_LOGGING_CONFIG(config)            \
  namespace folly {                                  \
  const char* getBaseLoggingConfig() {               \
    static constexpr StringPiece configSP((config)); \
    return configSP.data();                          \
  }                                                  \
  }                                                  \
  static_assert(true, "require a semicolon after FOLLY_INIT_LOGGING_CONFIG()")