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      1 /*
      2  * Copyright (c) 2017, The Linux Foundation. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *    * Redistributions of source code must retain the above copyright
      8  *      notice, this list of conditions and the following disclaimer.
      9  *    * Redistributions in binary form must reproduce the above
     10  *      copyright notice, this list of conditions and the following
     11  *      disclaimer in the documentation and/or other materials provided
     12  *      with the distribution.
     13  *    * Neither the name of The Linux Foundation nor the names of its
     14  *      contributors may be used to endorse or promote products derived
     15  *      from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
     18  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
     21  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     22  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
     24  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     25  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     26  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
     27  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 #ifndef _LOCAL_LOG_BUFFER_H_
     30 #define _LOCAL_LOG_BUFFER_H_
     31 /* External Includes */
     32 #include <deque>
     33 #include <sstream>
     34 #include <string>
     35 #include <sys/types.h>
     36 #include <vector>
     37 
     38 /* Namespace pollution avoidance */
     39 using ::std::deque;
     40 using ::std::string;
     41 using ::std::stringstream;
     42 using ::std::vector;
     43 
     44 
     45 class LocalLogBuffer {
     46 public:
     47     class FunctionLog {
     48     public:
     49         FunctionLog(string /* funcName */);
     50         FunctionLog(const FunctionLog& /* other */);
     51         void addArg(string /* kw */, string /* arg */);
     52         void addArg(string /* kw */, vector<string> /* args */);
     53         void addArg(string /* kw */, uint64_t /* arg */);
     54         void setResult(bool /* success */, string /* msg */);
     55         void setResult(vector<unsigned int> /* ret */);
     56         void setResult(uint64_t /* rx */, uint64_t /* tx */);
     57         string toString();
     58     private:
     59         void maybeAddArgsComma();
     60         const string mName;
     61         bool mArgsProvided;
     62         stringstream mSSArgs;
     63         stringstream mSSReturn;
     64     }; /* FunctionLog */
     65     LocalLogBuffer(string /* name */, int /* maxLogs */);
     66     void addLog(FunctionLog /* log */);
     67     void toLogcat();
     68     void toFd(int fd);
     69 private:
     70     deque<FunctionLog> mLogs;
     71     const string mName;
     72     const size_t mMaxLogs;
     73 }; /* LocalLogBuffer */
     74 #endif /* _LOCAL_LOG_BUFFER_H_ */
     75