78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
/*
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* Copyright 2003,2004 The Apache Software Foundation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _LOG4CXX_HELPERS_SYSTEM_H
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#define _LOG4CXX_HELPERS_SYSTEM_H
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#include <log4cxx/config.h>
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#include <log4cxx/helpers/tchar.h>
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#include <log4cxx/helpers/exception.h>
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namespace log4cxx
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{
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namespace helpers
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{
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class Properties;
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/** The System class contains several useful class fields and methods.
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It cannot be instantiated.
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*/
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class LOG4CXX_EXPORT System
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{
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public:
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/** Returns the current time in milliseconds since midnight (0 hour),
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January 1, 1970.
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Returns the current time in milliseconds. Note that while the unit of
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time of the return value is a millisecond, the granularity of the value
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depends on the underlying operating system and may be larger. For
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example, many operating systems measure time in units of tens of
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milliseconds.
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@return the difference, measured in milliseconds, between the current
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time and midnight, January 1, 1970 UTC.
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*/
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static int64_t currentTimeMillis();
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/**
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Gets the system property indicated by the specified key.
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@param key the name of the system property.
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@return the string value of the system property, or the default value if
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there is no property with that key.
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@throws IllegalArgumentException if key is empty.
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*/
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static String getProperty(const String& key);
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/**
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Sets the system property indicated by the specified key.
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@param key the name of the system property.
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@param value the value of the system property.
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@throws IllegalArgumentException if key is empty.
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*/
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static void setProperty(const String& key, const String& value);
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static void setProperties(const Properties& props);
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};
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} // namespace helpers
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}; // namespace log4cxx
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#endif //_LOG4CXX_HELPERS_SYSTEM_H
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