1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*
* Copyright (C) 2012-2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _LOGD_LOG_BUFFER_H__
#define _LOGD_LOG_BUFFER_H__
#include <sys/types.h>
#include <log/log.h>
#include <sysutils/SocketClient.h>
#include <utils/List.h>
#include <private/android_filesystem_config.h>
#include "LogBufferElement.h"
#include "LogTimes.h"
#include "LogStatistics.h"
#include "LogWhiteBlackList.h"
typedef android::List<LogBufferElement *> LogBufferElementCollection;
class LogBuffer {
LogBufferElementCollection mLogElements;
pthread_mutex_t mLogElementsLock;
LogStatistics stats;
PruneList mPrune;
unsigned long mMaxSize[LOG_ID_MAX];
public:
LastLogTimes &mTimes;
LogBuffer(LastLogTimes *times);
void init();
void log(log_id_t log_id, log_time realtime,
uid_t uid, pid_t pid, pid_t tid,
const char *msg, unsigned short len);
uint64_t flushTo(SocketClient *writer, const uint64_t start,
bool privileged,
int (*filter)(const LogBufferElement *element, void *arg) = NULL,
void *arg = NULL);
void clear(log_id_t id, uid_t uid = AID_ROOT);
unsigned long getSize(log_id_t id);
int setSize(log_id_t id, unsigned long size);
unsigned long getSizeUsed(log_id_t id);
// *strp uses malloc, use free to release.
void formatStatistics(char **strp, uid_t uid, unsigned int logMask);
void enableStatistics() {
stats.enableStatistics();
}
int initPrune(char *cp) { return mPrune.init(cp); }
// *strp uses malloc, use free to release.
void formatPrune(char **strp) { mPrune.format(strp); }
// helper
char *pidToName(pid_t pid) { return stats.pidToName(pid); }
uid_t pidToUid(pid_t pid) { return stats.pidToUid(pid); }
private:
void maybePrune(log_id_t id);
void prune(log_id_t id, unsigned long pruneRows, uid_t uid = AID_ROOT);
LogBufferElementCollection::iterator erase(LogBufferElementCollection::iterator it);
};
#endif // _LOGD_LOG_BUFFER_H__
|
