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130 lines
3.4 KiB
C++
130 lines
3.4 KiB
C++
//
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// ErrorHandler.h
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//
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// Library: Foundation
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// Package: Threading
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// Module: ErrorHandler
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//
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// Definition of the ErrorHandler class.
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//
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// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_ErrorHandler_INCLUDED
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#define Foundation_ErrorHandler_INCLUDED
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#include "Poco/Exception.h"
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#include "Poco/Foundation.h"
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#include "Poco/Mutex.h"
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#include "Poco/Message.h"
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namespace Poco
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{
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class Foundation_API ErrorHandler
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/// This is the base class for thread error handlers.
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///
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/// An unhandled exception that causes a thread to terminate is usually
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/// silently ignored, since the class library cannot do anything meaningful
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/// about it.
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///
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/// The Thread class provides the possibility to register a
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/// global ErrorHandler that is invoked whenever a thread has
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/// been terminated by an unhandled exception.
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/// The ErrorHandler must be derived from this class and can
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/// provide implementations of all three exception() overloads.
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///
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/// The ErrorHandler is always invoked within the context of
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/// the offending thread.
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{
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public:
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ErrorHandler();
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/// Creates the ErrorHandler.
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virtual ~ErrorHandler();
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/// Destroys the ErrorHandler.
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virtual void exception(const Exception & exc);
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/// Called when a Poco::Exception (or a subclass)
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/// caused the thread to terminate.
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///
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/// This method should not throw any exception - it would
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/// be silently ignored.
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///
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/// The default implementation just breaks into the debugger.
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virtual void exception(const std::exception & exc);
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/// Called when a std::exception (or a subclass)
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/// caused the thread to terminate.
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///
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/// This method should not throw any exception - it would
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/// be silently ignored.
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///
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/// The default implementation just breaks into the debugger.
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virtual void exception();
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/// Called when an exception that is neither a
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/// Poco::Exception nor a std::exception caused
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/// the thread to terminate.
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///
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/// This method should not throw any exception - it would
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/// be silently ignored.
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///
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/// The default implementation just breaks into the debugger.
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virtual void logMessageImpl(Message::Priority priority, const std::string & msg) {}
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/// Write a messages to the log
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/// Useful for logging from Poco
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static void handle(const Exception & exc);
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/// Invokes the currently registered ErrorHandler.
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static void handle(const std::exception & exc);
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/// Invokes the currently registered ErrorHandler.
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static void handle();
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/// Invokes the currently registered ErrorHandler.
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static void logMessage(Message::Priority priority, const std::string & msg);
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/// Invokes the currently registered ErrorHandler to log a message.
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static ErrorHandler * set(ErrorHandler * pHandler);
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/// Registers the given handler as the current error handler.
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///
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/// Returns the previously registered handler.
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static ErrorHandler * get();
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/// Returns a pointer to the currently registered
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/// ErrorHandler.
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protected:
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static ErrorHandler * defaultHandler();
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/// Returns the default ErrorHandler.
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private:
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static ErrorHandler * _pHandler;
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static FastMutex _mutex;
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};
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//
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// inlines
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//
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inline ErrorHandler * ErrorHandler::get()
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{
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return _pHandler;
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}
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} // namespace Poco
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#endif // Foundation_ErrorHandler_INCLUDED
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