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Side by Side Diff: base/logging.h

Issue 2034393004: Allow multiple logging::LogMessage{Handler,Listener}s Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix installation_validator_unittest Created 4 years, 6 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef BASE_LOGGING_H_ 5 #ifndef BASE_LOGGING_H_
6 #define BASE_LOGGING_H_ 6 #define BASE_LOGGING_H_
7 7
8 #include <stddef.h> 8 #include <stddef.h>
9 9
10 #include <cassert> 10 #include <cassert>
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278 // (e.g. a silent one for Unit Tests) 278 // (e.g. a silent one for Unit Tests)
279 typedef void (*LogAssertHandlerFunction)(const std::string& str); 279 typedef void (*LogAssertHandlerFunction)(const std::string& str);
280 BASE_EXPORT void SetLogAssertHandler(LogAssertHandlerFunction handler); 280 BASE_EXPORT void SetLogAssertHandler(LogAssertHandlerFunction handler);
281 281
282 // Sets the Log Message Handler that gets passed every log message before 282 // Sets the Log Message Handler that gets passed every log message before
283 // it's sent to other log destinations (if any). 283 // it's sent to other log destinations (if any).
284 // Returns true to signal that it handled the message and the message 284 // Returns true to signal that it handled the message and the message
285 // should not be sent to other log destinations. 285 // should not be sent to other log destinations.
286 typedef bool (*LogMessageHandlerFunction)(int severity, 286 typedef bool (*LogMessageHandlerFunction)(int severity,
287 const char* file, int line, size_t message_start, const std::string& str); 287 const char* file, int line, size_t message_start, const std::string& str);
288 BASE_EXPORT void SetLogMessageHandler(LogMessageHandlerFunction handler); 288 BASE_EXPORT void PushLogMessageHandler(LogMessageHandlerFunction handler);
289 BASE_EXPORT LogMessageHandlerFunction GetLogMessageHandler(); 289 BASE_EXPORT void PopLogMessageHandler();
290 BASE_EXPORT LogMessageHandlerFunction GetTopLogMessageHandler();
290 291
291 typedef int LogSeverity; 292 typedef int LogSeverity;
292 const LogSeverity LOG_VERBOSE = -1; // This is level 1 verbosity 293 const LogSeverity LOG_VERBOSE = -1; // This is level 1 verbosity
293 // Note: the log severities are used to index into the array of names, 294 // Note: the log severities are used to index into the array of names,
294 // see log_severity_names. 295 // see log_severity_names.
295 const LogSeverity LOG_INFO = 0; 296 const LogSeverity LOG_INFO = 0;
296 const LogSeverity LOG_WARNING = 1; 297 const LogSeverity LOG_WARNING = 1;
297 const LogSeverity LOG_ERROR = 2; 298 const LogSeverity LOG_ERROR = 2;
298 const LogSeverity LOG_FATAL = 3; 299 const LogSeverity LOG_FATAL = 3;
299 const LogSeverity LOG_NUM_SEVERITIES = 4; 300 const LogSeverity LOG_NUM_SEVERITIES = 4;
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994 #elif NOTIMPLEMENTED_POLICY == 5 995 #elif NOTIMPLEMENTED_POLICY == 5
995 #define NOTIMPLEMENTED() do {\ 996 #define NOTIMPLEMENTED() do {\
996 static bool logged_once = false;\ 997 static bool logged_once = false;\
997 LOG_IF(ERROR, !logged_once) << NOTIMPLEMENTED_MSG;\ 998 LOG_IF(ERROR, !logged_once) << NOTIMPLEMENTED_MSG;\
998 logged_once = true;\ 999 logged_once = true;\
999 } while(0);\ 1000 } while(0);\
1000 EAT_STREAM_PARAMETERS 1001 EAT_STREAM_PARAMETERS
1001 #endif 1002 #endif
1002 1003
1003 #endif // BASE_LOGGING_H_ 1004 #endif // BASE_LOGGING_H_
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