1 // Copyright 2016 The Chromium Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_SYSLOG_LOGGING_H_ 6 #define BASE_SYSLOG_LOGGING_H_ 7 8 #include <iosfwd> 9 10 #include "base/base_export.h" 11 #include "base/logging.h" 12 #include "build/build_config.h" 13 14 namespace logging { 15 16 // Keep in mind that the syslog is always active regardless of the logging level 17 // and applied flags. Use only for important information that a system 18 // administrator might need to maintain the browser installation. 19 #define SYSLOG_STREAM(severity) \ 20 COMPACT_GOOGLE_LOG_EX_ ## severity(EventLogMessage).stream() 21 #define SYSLOG(severity) \ 22 SYSLOG_STREAM(severity) 23 24 #if BUILDFLAG(IS_WIN) 25 // Sets the name, category and event id of the event source for logging to the 26 // Windows Event Log. Call this function once before using the SYSLOG macro or 27 // otherwise it will behave as a regular LOG macro. 28 void BASE_EXPORT SetEventSource(const std::string& name, 29 uint16_t category, 30 uint32_t event_id); 31 32 // The event source may get set more than once in tests. This function allows 33 // a test to reset the source when needed. 34 void BASE_EXPORT ResetEventSourceForTesting(); 35 #endif // BUILDFLAG(IS_WIN) 36 37 // Creates a formatted message on the system event log. That would be the 38 // Application Event log on Windows and the messages log file on POSIX systems. 39 class BASE_EXPORT EventLogMessage { 40 public: 41 EventLogMessage(const char* file, int line, LogSeverity severity); 42 EventLogMessage(const EventLogMessage&) = delete; 43 EventLogMessage& operator=(const EventLogMessage&) = delete; 44 ~EventLogMessage(); 45 stream()46 std::ostream& stream() { return log_message_.stream(); } 47 48 private: 49 LogMessage log_message_; 50 }; 51 52 void BASE_EXPORT SetSyslogLoggingForTesting(bool logging_enabled); 53 54 } // namespace logging 55 56 #endif // BASE_SYSLOG_LOGGING_H_ 57