/*
**
** Copyright 2015, 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 SYSTEM_EXTRAS_PERFPROFD_CONFIGREADER_H_
#define SYSTEM_EXTRAS_PERFPROFD_CONFIGREADER_H_
#include <string>
#include <map>
//
// This table describes the perfprofd config file syntax in terms of
// key/value pairs. Values come in two flavors: strings, or unsigned
// integers. In the latter case the reader sets allowable
// minimum/maximum for the setting.
//
class ConfigReader {
public:
ConfigReader();
~ConfigReader();
// Ask for the current setting of a config item
unsigned getUnsignedValue(const char *key) const;
std::string getStringValue(const char *key) const;
// read the specified config file, applying any settings it contains
// returns true for successful read, false if conf file cannot be opened.
bool readFile();
// set/get path to config file
static void setConfigFilePath(const char *path);
static const char *getConfigFilePath();
// override a config item (for unit testing purposes)
void overrideUnsignedEntry(const char *key, unsigned new_value);
private:
void addUnsignedEntry(const char *key,
unsigned default_value,
unsigned min_value,
unsigned max_value);
void addStringEntry(const char *key, const char *default_value);
void addDefaultEntries();
void parseLine(const char *key, const char *value, unsigned linecount);
typedef struct { unsigned minv, maxv; } values;
std::map<std::string, values> u_info;
std::map<std::string, unsigned> u_entries;
std::map<std::string, std::string> s_entries;
bool trace_config_read;
};
#endif
