1 /* 2 * 3 * Copyright 2015, The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 #ifndef SYSTEM_EXTRAS_PERFPROFD_CONFIGREADER_H_ 19 #define SYSTEM_EXTRAS_PERFPROFD_CONFIGREADER_H_ 20 21 #include <string> 22 #include <map> 23 24 #include "config.h" 25 26 // 27 // This table describes the perfprofd config file syntax in terms of 28 // key/value pairs. Values come in two flavors: strings, or unsigned 29 // integers. In the latter case the reader sets allowable 30 // minimum/maximum for the setting. 31 // 32 class ConfigReader { 33 34 public: 35 ConfigReader(); 36 ~ConfigReader(); 37 38 // Ask for the current setting of a config item 39 unsigned getUnsignedValue(const char *key) const; 40 bool getBoolValue(const char *key) const; 41 std::string getStringValue(const char *key) const; 42 43 // read the specified config file, applying any settings it contains 44 // returns true for successful read, false if conf file cannot be opened. 45 bool readFile(); 46 47 bool Read(const std::string& data, bool fail_on_error); 48 49 // set/get path to config file 50 static void setConfigFilePath(const char *path); 51 static const char *getConfigFilePath(); 52 53 // override a config item (for unit testing purposes) 54 void overrideUnsignedEntry(const char *key, unsigned new_value); 55 56 void FillConfig(Config* config); 57 58 private: 59 void addUnsignedEntry(const char *key, 60 unsigned default_value, 61 unsigned min_value, 62 unsigned max_value); 63 void addStringEntry(const char *key, const char *default_value); 64 void addDefaultEntries(); 65 bool parseLine(const char *key, const char *value, unsigned linecount); 66 67 typedef struct { unsigned minv, maxv; } values; 68 std::map<std::string, values> u_info; 69 std::map<std::string, unsigned> u_entries; 70 std::map<std::string, std::string> s_entries; 71 bool trace_config_read; 72 }; 73 74 #endif 75