1 | // Licensed to the Apache Software Foundation (ASF) under one |
2 | // or more contributor license agreements. See the NOTICE file |
3 | // distributed with this work for additional information |
4 | // regarding copyright ownership. The ASF licenses this file |
5 | // to you under the Apache License, Version 2.0 (the |
6 | // "License"); you may not use this file except in compliance |
7 | // with the License. You may obtain a copy of the License at |
8 | // |
9 | // http://www.apache.org/licenses/LICENSE-2.0 |
10 | // |
11 | // Unless required by applicable law or agreed to in writing, |
12 | // software distributed under the License is distributed on an |
13 | // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
14 | // KIND, either express or implied. See the License for the |
15 | // specific language governing permissions and limitations |
16 | // under the License. |
17 | |
18 | |
19 | #ifndef BRPC_TRACEPRINTF_H |
20 | #define BRPC_TRACEPRINTF_H |
21 | |
22 | #include "butil/macros.h" |
23 | |
24 | // To brpc developers: This is a header included by user, don't depend |
25 | // on internal structures, use opaque pointers instead. |
26 | |
27 | |
28 | namespace brpc { |
29 | |
30 | bool CanAnnotateSpan(); |
31 | void AnnotateSpan(const char* fmt, ...); |
32 | |
33 | } // namespace brpc |
34 | |
35 | |
36 | // Use this macro to print log to /rpcz and tracing system. |
37 | // If rpcz is not enabled, arguments to this macro is NOT evaluated, don't |
38 | // have (critical) side effects in arguments. |
39 | #define TRACEPRINTF(fmt, args...) \ |
40 | do { \ |
41 | if (::brpc::CanAnnotateSpan()) { \ |
42 | ::brpc::AnnotateSpan("[" __FILE__ ":" BAIDU_SYMBOLSTR(__LINE__) "] " fmt, ##args); \ |
43 | } \ |
44 | } while (0) |
45 | |
46 | #endif // BRPC_TRACEPRINTF_H |
47 | |