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traceprintf.h
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traceprintf.h
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// 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.
#ifndef BRPC_TRACEPRINTF_H
#define BRPC_TRACEPRINTF_H
#include "butil/macros.h"
// To brpc developers: This is a header included by user, don't depend
// on internal structures, use opaque pointers instead.
namespace brpc {
bool CanAnnotateSpan();
void AnnotateSpan(const char* fmt, ...);
} // namespace brpc
// Use this macro to print log to /rpcz and tracing system.
// If rpcz is not enabled, arguments to this macro is NOT evaluated, don't
// have (critical) side effects in arguments.
#define TRACEPRINTF(fmt, args...) \
do { \
if (::brpc::CanAnnotateSpan()) { \
::brpc::AnnotateSpan("[" __FILE__ ":" BAIDU_SYMBOLSTR(__LINE__) "] " fmt, ##args); \
} \
} while (0)
#endif // BRPC_TRACEPRINTF_H