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/*
* Copyright (C) 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_STATISTICS_H__
#define _LOGD_LOG_STATISTICS_H__
#include <sys/types.h>
#include <log/log.h>
#include <utils/BasicHashtable.h>
#include "LogBufferElement.h"
#define log_id_for_each(i) \
for (log_id_t i = LOG_ID_MIN; i < LOG_ID_MAX; i = (log_id_t) (i + 1))
struct UidEntry {
const uid_t uid;
size_t size;
UidEntry(uid_t uid):uid(uid),size(0) { }
inline const uid_t&getKey() const { return uid; }
size_t getSizes() const { return size; }
inline void add(size_t s) { size += s; }
inline bool subtract(size_t s) { size -= s; return !size; }
};
// Log Statistics
class LogStatistics {
size_t mSizes[LOG_ID_MAX];
size_t mElements[LOG_ID_MAX];
size_t mSizesTotal[LOG_ID_MAX];
size_t mElementsTotal[LOG_ID_MAX];
// uid to size list
typedef android::BasicHashtable<uid_t, UidEntry> uidTable_t;
uidTable_t uidTable[LOG_ID_MAX];
public:
LogStatistics();
void enableStatistics() { }
void add(LogBufferElement *entry);
void subtract(LogBufferElement *entry);
// Caller must delete array
const UidEntry **sort(size_t n, log_id i);
// fast track current value by id only
size_t sizes(log_id_t id) const { return mSizes[id]; }
size_t elements(log_id_t id) const { return mElements[id]; }
size_t sizesTotal(log_id_t id) const { return mSizesTotal[id]; }
size_t elementsTotal(log_id_t id) const { return mElementsTotal[id]; }
// *strp = malloc, balance with free
void format(char **strp, uid_t uid, unsigned int logMask);
// helper
char *pidToName(pid_t pid);
uid_t pidToUid(pid_t pid);
char *uidToName(uid_t uid);
};
#endif // _LOGD_LOG_STATISTICS_H__
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