80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LOGD_LOG_STATISTICS_H__
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#define _LOGD_LOG_STATISTICS_H__
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#include <sys/types.h>
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#include <log/log.h>
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#include <utils/BasicHashtable.h>
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#include "LogBufferElement.h"
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#define log_id_for_each(i) \
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for (log_id_t i = LOG_ID_MIN; i < LOG_ID_MAX; i = (log_id_t) (i + 1))
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struct UidEntry {
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const uid_t uid;
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size_t size;
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UidEntry(uid_t uid):uid(uid),size(0) { }
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inline const uid_t&getKey() const { return uid; }
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size_t getSizes() const { return size; }
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inline void add(size_t s) { size += s; }
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inline bool subtract(size_t s) { size -= s; return !size; }
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};
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// Log Statistics
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class LogStatistics {
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size_t mSizes[LOG_ID_MAX];
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size_t mElements[LOG_ID_MAX];
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size_t mSizesTotal[LOG_ID_MAX];
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size_t mElementsTotal[LOG_ID_MAX];
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// uid to size list
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typedef android::BasicHashtable<uid_t, UidEntry> uidTable_t;
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uidTable_t uidTable[LOG_ID_MAX];
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public:
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LogStatistics();
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void enableStatistics() { }
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void add(LogBufferElement *entry);
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void subtract(LogBufferElement *entry);
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// Caller must delete array
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const UidEntry **sort(size_t n, log_id i);
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// fast track current value by id only
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size_t sizes(log_id_t id) const { return mSizes[id]; }
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size_t elements(log_id_t id) const { return mElements[id]; }
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size_t sizesTotal(log_id_t id) const { return mSizesTotal[id]; }
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size_t elementsTotal(log_id_t id) const { return mElementsTotal[id]; }
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// *strp = malloc, balance with free
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void format(char **strp, uid_t uid, unsigned int logMask);
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// helper
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char *pidToName(pid_t pid);
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uid_t pidToUid(pid_t pid);
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char *uidToName(uid_t uid);
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};
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#endif // _LOGD_LOG_STATISTICS_H__
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