3 ** Copyright 2015, The Android Open Source Project
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
9 ** http://www.apache.org/licenses/LICENSE-2.0
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.
18 //#define LOG_NDEBUG 0
19 #define LOG_TAG "ServiceLog"
20 #include <utils/Log.h>
24 #include "ServiceLog.h"
26 static const size_t kDefaultMaxNum = 100;
30 ServiceLog::ServiceLog() : mMaxNum(kDefaultMaxNum), mLogs(mMaxNum) {}
31 ServiceLog::ServiceLog(size_t maxNum) : mMaxNum(maxNum), mLogs(mMaxNum) {}
33 void ServiceLog::add(const String8 &log) {
34 Mutex::Autolock lock(mLock);
37 strftime(buf, sizeof(buf), "%m-%d %T", localtime(&now));
38 mLogs.add(String8::format("%s %s", buf, log.string()));
41 String8 ServiceLog::toString(const char *linePrefix) const {
42 Mutex::Autolock lock(mLock);
44 for (const auto& log : mLogs) {
45 addLine(log.string(), linePrefix, &result);
47 if (mLogs.size() == mMaxNum) {
48 addLine("...", linePrefix, &result);
49 } else if (mLogs.size() == 0) {
50 addLine("[no events yet]", linePrefix, &result);
55 void ServiceLog::addLine(const char *log, const char *prefix, String8 *result) const {
57 result->append(prefix);
63 } // namespace android