wxWidgets/include/wx/msw/tls.h

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///////////////////////////////////////////////////////////////////////////////
// Name: wx/unix/tls.h
// Purpose: Win32 implementation of wxTlsValue<>
// Author: Vadim Zeitlin
// Created: 2008-08-08
// RCS-ID: $Id$
// Copyright: (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_MSW_TLS_H_
#define _WX_MSW_TLS_H_
#include "wx/msw/wrapwin.h"
// ----------------------------------------------------------------------------
// wxTlsKey is a helper class encapsulating a TLS slot
// ----------------------------------------------------------------------------
class wxTlsKey
{
public:
// ctor allocates a new key
wxTlsKey()
{
m_slot = ::TlsAlloc();
}
// return true if the key was successfully allocated
bool IsOk() const { return m_slot != TLS_OUT_OF_INDEXES; }
// get the key value, there is no error return
void *Get() const
{
return ::TlsGetValue(m_slot);
}
// change the key value, return true if ok
bool Set(void *value)
{
return ::TlsSetValue(m_slot, value) != 0;
}
// free the key
~wxTlsKey()
{
if ( IsOk() )
::TlsFree(m_slot);
}
private:
DWORD m_slot;
wxDECLARE_NO_COPY_CLASS(wxTlsKey);
};
#endif // _WX_MSW_TLS_H_