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 //#define LOG_NDEBUG 0
19 #define LOG_TAG "ServiceLog"
20 #include <utils/Log.h>
21
22 #include <time.h>
23
24 #include "ServiceLog.h"
25
26 static const size_t kDefaultMaxNum = 100;
27
28 namespace android {
29
ServiceLog()30 ServiceLog::ServiceLog() : mMaxNum(kDefaultMaxNum), mLogs(mMaxNum) {}
ServiceLog(size_t maxNum)31 ServiceLog::ServiceLog(size_t maxNum) : mMaxNum(maxNum), mLogs(mMaxNum) {}
32
add(const String8 & log)33 void ServiceLog::add(const String8 &log) {
34 Mutex::Autolock lock(mLock);
35 time_t now = time(0);
36 char buf[64];
37 strftime(buf, sizeof(buf), "%m-%d %T", localtime(&now));
38 mLogs.add(String8::format("%s %s", buf, log.string()));
39 }
40
toString(const char * linePrefix) const41 String8 ServiceLog::toString(const char *linePrefix) const {
42 Mutex::Autolock lock(mLock);
43 String8 result;
44 for (const auto& log : mLogs) {
45 addLine(log.string(), linePrefix, &result);
46 }
47 if (mLogs.size() == mMaxNum) {
48 addLine("...", linePrefix, &result);
49 } else if (mLogs.size() == 0) {
50 addLine("[no events yet]", linePrefix, &result);
51 }
52 return result;
53 }
54
addLine(const char * log,const char * prefix,String8 * result) const55 void ServiceLog::addLine(const char *log, const char *prefix, String8 *result) const {
56 if (prefix != NULL) {
57 result->append(prefix);
58 }
59 result->append(log);
60 result->append("\n");
61 }
62
63 } // namespace android
64