1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #ifndef TRACE_UTILS_H
17 #define TRACE_UTILS_H
18 
19 #include <cutils/trace.h>
20 #include <utils/Trace.h>
21 
22 #define ATRACE_FORMAT(fmt, ...)           \
23     TraceUtils::TraceEnder __traceEnder = \
24             (TraceUtils::atraceFormatBegin(fmt, ##__VA_ARGS__), TraceUtils::TraceEnder())
25 
26 #define ATRACE_FORMAT_BEGIN(fmt, ...) TraceUtils::atraceFormatBegin(fmt, ##__VA_ARGS__)
27 
28 namespace android {
29 namespace uirenderer {
30 
31 class TraceUtils {
32 public:
33     class TraceEnder {
34     public:
~TraceEnder()35         ~TraceEnder() { ATRACE_END(); }
36     };
37 
atraceFormatBegin(const char * fmt,...)38     static void atraceFormatBegin(const char* fmt, ...) {
39         if (CC_LIKELY(!ATRACE_ENABLED())) return;
40 
41         const int BUFFER_SIZE = 256;
42         va_list ap;
43         char buf[BUFFER_SIZE];
44 
45         va_start(ap, fmt);
46         vsnprintf(buf, BUFFER_SIZE, fmt, ap);
47         va_end(ap);
48 
49         ATRACE_BEGIN(buf);
50     }
51 
52 };  // class TraceUtils
53 
54 } /* namespace uirenderer */
55 } /* namespace android */
56 
57 #endif /* TRACE_UTILS_H */
58