d735e0f3ad
- The plugin now keeps the log file open for the duration of its lifetime. - This greatly improves the performace of the logging component, which was previously a significant bottleneck even at low logging verbosity. - The log now prints timestamps to the millisecond.
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
//Copyright (c) 2013-2015 United States Government as represented by the Administrator of the
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//National Aeronautics and Space Administration. All Rights Reserved.
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#ifndef XPC_LOG_H
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#define XPC_LOG_H
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#include <string>
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// LOG_VERBOSITY determines the level of logging throughout the plugin.
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// 0: Minimum logging. Only plugin manager events will be logged.
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// 1: Critical errors. When an error that prevents correct operation of the
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// plugin, attempt to write useful information to the log. Note that since
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// XPC runs inside the X-Plane executable, we try very hard no to crash.
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// As a result, these log messages may be the only indication of failure.
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// 2: All errors. Any time something unexpected happens, log it.
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// 3: Significant actions. Any time something happens outside of normal
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// command processing, log it.
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// 5: Everything. Log nearly every single action the plugin takes. This may
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// have a detrimental impact on X-Plane performance.
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#define LOG_VERBOSITY 2
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namespace XPC
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{
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/// Handles logging for the plugin.
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///
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/// \details Provides functions to write lines to the XPC log file.
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/// \author Jason Watkins
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/// \version 1.0
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/// \since 1.0
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/// \date Intial Version: 2015-04-09
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/// \date Last Updated: 2015-04-09
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class Log
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{
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public:
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/// Initializes the logging component by deleting old log files,
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/// writing header information to the log file.
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static void Initialize(std::string header);
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/// Closes the log file.
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static void Close();
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/// Writes the C string pointed to by format, followed by a line
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/// terminator to the XPC log file. If format contains format
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/// specifiers, additional arguments following format will be formatted
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/// and inserted in the resulting string, replacing their respective
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/// specifiers.
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///
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/// \param format The format string appropriate for consumption by sprintf.
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static void FormatLine(const char* format, ...);
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/// Writes the specified string value, followed by a line terminator
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/// to the XPC log file.
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///
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/// \param value The value to write.
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static void WriteLine(const std::string& value);
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/// Writes the specified C string value, followed by a line terminator
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/// to the XPC log file.
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///
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/// \param value The value to write.
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static void WriteLine(const char* value);
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};
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}
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#endif
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