// Licensed to the Apache Software Foundation (ASF) under one

// or more contributor license agreements.  See the NOTICE file

// distributed with this work for additional information

// regarding copyright ownership.  The ASF licenses this file

// to you 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

namespace doris {

// Retry on EINTR for functions like read() that return -1 on error.

#define RETRY_ON_EINTR(err, expr)                                                         \

    do {                                                                                  \

        static_assert(std::is_signed_v<decltype(err)>, #err " must be a signed integer"); \

        (err) = (expr);                                                                   \

    } while ((err) == -1 && errno == EINTR)

// Macro that allows definition of a variable appended with the current line

// number in the source file. Typically for use by other macros to allow the

// user to declare multiple variables with the same "base" name inside the same

// lexical block.

#define VARNAME_LINENUM(varname) VARNAME_LINENUM_INTERNAL(varname##_L, __LINE__)

#define VARNAME_LINENUM_INTERNAL(v, line) VARNAME_LINENUM_INTERNAL2(v, line)

#define VARNAME_LINENUM_INTERNAL2(v, line) v##line

} // namespace doris