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 // 25 // This table describes the perfprofd config file syntax in terms of 26 // key/value pairs. Values come in two flavors: strings, or unsigned 27 // integers. In the latter case the reader sets allowable 28 // minimum/maximum for the setting. 29 // 30 class ConfigReader { 31 32 public: 33 ConfigReader(); 34 ~ConfigReader(); 35 36 // Ask for the current setting of a config item 37 unsigned getUnsignedValue(const char *key) const; 38 std::string getStringValue(const char *key) const; 39 40 // read the specified config file, applying any settings it contains 41 // returns true for successful read, false if conf file cannot be opened. 42 bool readFile(); 43 44 // set/get path to config file 45 static void setConfigFilePath(const char *path); 46 static const char *getConfigFilePath(); 47 48 // override a config item (for unit testing purposes) 49 void overrideUnsignedEntry(const char *key, unsigned new_value); 50 51 private: 52 void addUnsignedEntry(const char *key, 53 unsigned default_value, 54 unsigned min_value, 55 unsigned max_value); 56 void addStringEntry(const char *key, const char *default_value); 57 void addDefaultEntries(); 58 void parseLine(const char *key, const char *value, unsigned linecount); 59 60 typedef struct { unsigned minv, maxv; } values; 61 std::map<std::string, values> u_info; 62 std::map<std::string, unsigned> u_entries; 63 std::map<std::string, std::string> s_entries; 64 bool trace_config_read; 65 }; 66 67 #endif 68
