blob: a13fded8b1635031a7f8a0c358d3fbfe4eff2ef2 [file] [log] [blame]
Mark Salyzyn0175b072014-02-26 09:50:16 -08001/*
2 * Copyright (C) 2012-2014 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
17#ifndef _LOGD_LOG_BUFFER_H__
18#define _LOGD_LOG_BUFFER_H__
19
20#include <sys/types.h>
21
22#include <log/log.h>
23#include <sysutils/SocketClient.h>
24#include <utils/List.h>
25
Mark Salyzyn1a240b42014-06-12 11:16:16 -070026#include <private/android_filesystem_config.h>
27
Mark Salyzyn0175b072014-02-26 09:50:16 -080028#include "LogBufferElement.h"
29#include "LogTimes.h"
Mark Salyzyn34facab2014-02-06 14:48:50 -080030#include "LogStatistics.h"
Mark Salyzyndfa7a072014-02-11 12:29:31 -080031#include "LogWhiteBlackList.h"
Mark Salyzyn0175b072014-02-26 09:50:16 -080032
33typedef android::List<LogBufferElement *> LogBufferElementCollection;
34
35class LogBuffer {
36 LogBufferElementCollection mLogElements;
37 pthread_mutex_t mLogElementsLock;
38
Mark Salyzyn34facab2014-02-06 14:48:50 -080039 LogStatistics stats;
Mark Salyzyne457b742014-02-19 17:18:31 -080040
Mark Salyzyndfa7a072014-02-11 12:29:31 -080041 PruneList mPrune;
42
43 unsigned long mMaxSize[LOG_ID_MAX];
Mark Salyzyndfa7a072014-02-11 12:29:31 -080044
Mark Salyzyn0175b072014-02-26 09:50:16 -080045public:
46 LastLogTimes &mTimes;
47
48 LogBuffer(LastLogTimes *times);
Mark Salyzyn11e55cb2015-03-10 16:45:17 -070049 void init();
Mark Salyzyn0175b072014-02-26 09:50:16 -080050
Mark Salyzyn202e1532015-02-09 08:21:05 -080051 int log(log_id_t log_id, log_time realtime,
52 uid_t uid, pid_t pid, pid_t tid,
53 const char *msg, unsigned short len);
Mark Salyzynf7c0f752015-03-03 13:39:37 -080054 uint64_t flushTo(SocketClient *writer, const uint64_t start,
Mark Salyzyn7e2f83c2014-03-05 07:41:49 -080055 bool privileged,
Mark Salyzynf7c0f752015-03-03 13:39:37 -080056 int (*filter)(const LogBufferElement *element, void *arg) = NULL,
Mark Salyzyn7e2f83c2014-03-05 07:41:49 -080057 void *arg = NULL);
Mark Salyzyn0175b072014-02-26 09:50:16 -080058
Mark Salyzyn1a240b42014-06-12 11:16:16 -070059 void clear(log_id_t id, uid_t uid = AID_ROOT);
Mark Salyzyn0175b072014-02-26 09:50:16 -080060 unsigned long getSize(log_id_t id);
Mark Salyzyndfa7a072014-02-11 12:29:31 -080061 int setSize(log_id_t id, unsigned long size);
Mark Salyzyn0175b072014-02-26 09:50:16 -080062 unsigned long getSizeUsed(log_id_t id);
Mark Salyzyn34facab2014-02-06 14:48:50 -080063 // *strp uses malloc, use free to release.
Mark Salyzyndfa7a072014-02-11 12:29:31 -080064 void formatStatistics(char **strp, uid_t uid, unsigned int logMask);
65
Mark Salyzynf5fc5092014-09-21 14:22:18 -070066 void enableStatistics() {
67 stats.enableStatistics();
68 }
69
Mark Salyzyndfa7a072014-02-11 12:29:31 -080070 int initPrune(char *cp) { return mPrune.init(cp); }
71 // *strp uses malloc, use free to release.
72 void formatPrune(char **strp) { mPrune.format(strp); }
Mark Salyzyn0175b072014-02-26 09:50:16 -080073
Mark Salyzyned777e92015-06-24 16:22:54 -070074 // helper must be protected directly or implicitly by lock()/unlock()
Mark Salyzyn9a038632014-04-07 07:05:40 -070075 char *pidToName(pid_t pid) { return stats.pidToName(pid); }
Mark Salyzyn4ba03872014-04-07 07:15:33 -070076 uid_t pidToUid(pid_t pid) { return stats.pidToUid(pid); }
Mark Salyzyn21fb7e02015-04-20 07:26:27 -070077 char *uidToName(uid_t uid) { return stats.uidToName(uid); }
Mark Salyzyned777e92015-06-24 16:22:54 -070078 void lock() { pthread_mutex_lock(&mLogElementsLock); }
79 void unlock() { pthread_mutex_unlock(&mLogElementsLock); }
Mark Salyzyn9a038632014-04-07 07:05:40 -070080
Mark Salyzyn0175b072014-02-26 09:50:16 -080081private:
82 void maybePrune(log_id_t id);
Mark Salyzyn1a240b42014-06-12 11:16:16 -070083 void prune(log_id_t id, unsigned long pruneRows, uid_t uid = AID_ROOT);
Mark Salyzyn97c1c2b2015-03-10 13:51:35 -070084 LogBufferElementCollection::iterator erase(LogBufferElementCollection::iterator it);
Mark Salyzyn0175b072014-02-26 09:50:16 -080085};
86
Mark Salyzyn34facab2014-02-06 14:48:50 -080087#endif // _LOGD_LOG_BUFFER_H__