1 /*
2 **
3 ** Copyright 2015, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** 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, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17 
18 #ifndef ANDROID_SERVICELOG_H
19 #define ANDROID_SERVICELOG_H
20 
21 #include <utils/Errors.h>
22 #include <utils/String8.h>
23 #include <utils/threads.h>
24 #include <utils/Vector.h>
25 
26 #include "media/RingBuffer.h"
27 
28 namespace android {
29 
30 class ServiceLog : public RefBase {
31 public:
32     ServiceLog();
33     explicit ServiceLog(size_t maxNum);
34 
35     void add(const String8 &log);
36     String8 toString(const char *linePrefix = NULL) const;
37 
38 private:
39     size_t mMaxNum;
40     mutable Mutex mLock;
41     RingBuffer<String8> mLogs;
42 
43     void addLine(const char *log, const char *prefix, String8 *result) const;
44 };
45 
46 // ----------------------------------------------------------------------------
47 
48 }; // namespace android
49 
50 #endif // ANDROID_SERVICELOG_H
51