wxWidgets/include/wx/unix/tls.h

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///////////////////////////////////////////////////////////////////////////////
// Name: wx/unix/tls.h
// Purpose: Pthreads 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_UNIX_TLS_H_
#define _WX_UNIX_TLS_H_
#include "wx/intl.h"
#include "wx/log.h"
#include <pthread.h>
// ----------------------------------------------------------------------------
// wxTlsKey is a helper class encapsulating the TLS value index
// ----------------------------------------------------------------------------
class wxTlsKey
{
public:
// ctor allocates a new key
wxTlsKey()
{
int rc = pthread_key_create(&m_key, NULL);
if ( rc )
wxLogSysError(_("Creating TLS key failed"), rc);
}
// return true if the key was successfully allocated
bool IsOk() const { return m_key != 0; }
// get the key value, there is no error return
void *Get() const
{
return pthread_getspecific(m_key);
}
// change the key value, return true if ok
bool Set(void *value)
{
int rc = pthread_setspecific(m_key, value);
if ( rc )
{
wxLogSysError(_("Failed to set TLS value"));
return false;
}
return true;
}
// free the key
~wxTlsKey()
{
if ( IsOk() )
pthread_key_delete(m_key);
}
private:
pthread_key_t m_key;
DECLARE_NO_COPY_CLASS(wxTlsKey)
};
#endif // _WX_UNIX_TLS_H_