Confdump Agent  1.4.0
ComContext.hpp
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00001 /* 
00002  * Confdump-Agent - Dump static and runtime system configuration
00003  * Copyright (C) 2009-2012  Straton IT, SAS
00004  * 
00005  * This program is free software: you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License version 3 as
00007  * published by the Free Software Foundation.
00008  * 
00009  * This program is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  * 
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
00016  */
00017 
00018 #ifndef INCLUDED_CONFDUMP_SYSTEM_WMI_CONTEXT_HPP
00019 #define INCLUDED_CONFDUMP_SYSTEM_WMI_CONTEXT_HPP
00020 
00021 #include "boost/noncopyable.hpp"
00022 #include "boost/shared_ptr.hpp"
00023 #include "boost/weak_ptr.hpp"
00024 
00025 namespace Confdump
00026 {
00027 namespace System
00028 {
00029 namespace Wmi
00030 {
00031 
00032 class ComContextGuard;
00033 
00059 class ComContext
00060 {
00061     class GuardImpl;
00062 
00063 public:
00065     typedef boost::shared_ptr<GuardImpl> Guard;
00066 
00073     Guard getGuard();
00074     ComContext();
00075     ~ComContext();
00076 
00077 private:
00083         class GuardImpl : boost::noncopyable
00084         {
00085         public:
00086                 ~GuardImpl();
00087 
00088         private:
00089                 friend ComContext::Guard ComContext::getGuard();
00090                 GuardImpl();
00092                 boost::shared_ptr<void> comInitGuard_;
00093         };
00094 
00098     static boost::weak_ptr<GuardImpl> instance_;
00099 };
00100 
00101 }
00102 }
00103 }
00104 
00105 #endif /* INCLUDED_CONFDUMP_SYSTEM_WMI_CONTEXT_HPP */
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