2 * Copyright (C) 2012-2014 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef _LOGD_LOG_BUFFER_H__
18 #define _LOGD_LOG_BUFFER_H__
20 #include <sys/types.h>
23 #include <sysutils/SocketClient.h>
24 #include <utils/List.h>
26 #include <private/android_filesystem_config.h>
28 #include "LogBufferElement.h"
30 #include "LogStatistics.h"
31 #include "LogWhiteBlackList.h"
33 typedef android::List<LogBufferElement *> LogBufferElementCollection;
36 LogBufferElementCollection mLogElements;
37 pthread_mutex_t mLogElementsLock;
43 unsigned long mMaxSize[LOG_ID_MAX];
48 LogBuffer(LastLogTimes *times);
51 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);
54 uint64_t flushTo(SocketClient *writer, const uint64_t start,
56 int (*filter)(const LogBufferElement *element, void *arg) = NULL,
59 void clear(log_id_t id, uid_t uid = AID_ROOT);
60 unsigned long getSize(log_id_t id);
61 int setSize(log_id_t id, unsigned long size);
62 unsigned long getSizeUsed(log_id_t id);
63 // *strp uses malloc, use free to release.
64 void formatStatistics(char **strp, uid_t uid, unsigned int logMask);
66 void enableStatistics() {
67 stats.enableStatistics();
70 int initPrune(char *cp) { return mPrune.init(cp); }
71 // *strp uses malloc, use free to release.
72 void formatPrune(char **strp) { mPrune.format(strp); }
74 // helper must be protected directly or implicitly by lock()/unlock()
75 char *pidToName(pid_t pid) { return stats.pidToName(pid); }
76 uid_t pidToUid(pid_t pid) { return stats.pidToUid(pid); }
77 char *uidToName(uid_t uid) { return stats.uidToName(uid); }
78 void lock() { pthread_mutex_lock(&mLogElementsLock); }
79 void unlock() { pthread_mutex_unlock(&mLogElementsLock); }
82 void maybePrune(log_id_t id);
83 void prune(log_id_t id, unsigned long pruneRows, uid_t uid = AID_ROOT);
84 LogBufferElementCollection::iterator erase(LogBufferElementCollection::iterator it);
87 #endif // _LOGD_LOG_BUFFER_H__