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/*
* Copyright (c) 2005, Eric Crahen
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is furnished
* to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef __ZTTSS_H__
#define __ZTTSS_H__
#include <windows.h>
namespace ZThread {
/**
* @class TSS
* @author Eric Crahen <http://www.code-foo.com>
* @date <2003-07-27T14:18:43-0400>
* @version 2.3.0
*
* An abstraction for dealing with WIN32 thread specific storage (tss).
* Provides get/set and creation/destruction.
*/
template <typename T>
class TSS {
DWORD _key;
bool _valid;
public:
/**
* Create a new object for accessing tss. The def
*/
TSS() {
_key = ::TlsAlloc();
_valid = (_key != 0xFFFFFFFF);
}
/**
* Destroy the underlying supoprt for accessing tss with this
* object.
*/
virtual ~TSS() {
if(_valid)
::TlsFree(_key);
}
/**
* Get the value stored in tss.
*
* @return T
*
* @exception InvalidOp_exception thrown when the tss is not properly initialized
*/
inline T get() const {
if(!_valid)
throw InvalidOp_Exception();
return static_cast<T>(::TlsGetValue(_key));
}
/**
* Store a value in tss.
*
* @param value T
* @return T old value
*
* @exception InvalidOp_exception thrown when the tss is not properly initialized
*/
inline T set(T value) const {
T oldValue = get();
::TlsSetValue(_key, value);
return oldValue;
}
};
}
#endif
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