/usr/include/wx-2.8/wx/snglinst.h is in wx2.8-headers 2.8.12.1-6ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Name: wx/snglinst.h
// Purpose: wxSingleInstanceChecker can be used to restrict the number of
// simultaneously running copies of a program to one
// Author: Vadim Zeitlin
// Modified by:
// Created: 08.06.01
// RCS-ID: $Id: snglinst.h 49563 2007-10-31 20:46:21Z VZ $
// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_SNGLINST_H_
#define _WX_SNGLINST_H_
#if wxUSE_SNGLINST_CHECKER
// ----------------------------------------------------------------------------
// wxSingleInstanceChecker
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxSingleInstanceChecker
{
public:
// default ctor, use Create() after it
wxSingleInstanceChecker() { Init(); }
// like Create() but no error checking (dangerous!)
wxSingleInstanceChecker(const wxString& name,
const wxString& path = wxEmptyString)
{
Init();
Create(name, path);
}
// name must be given and be as unique as possible, it is used as the mutex
// name under Win32 and the lock file name under Unix -
// wxTheApp->GetAppName() may be a good value for this parameter
//
// path is optional and is ignored under Win32 and used as the directory to
// create the lock file in under Unix (default is wxGetHomeDir())
//
// returns false if initialization failed, it doesn't mean that another
// instance is running - use IsAnotherRunning() to check it
bool Create(const wxString& name, const wxString& path = wxEmptyString);
// is another copy of this program already running?
bool IsAnotherRunning() const;
// dtor is not virtual, this class is not meant to be used polymorphically
~wxSingleInstanceChecker();
private:
// common part of all ctors
void Init() { m_impl = NULL; }
// the implementation details (platform specific)
class WXDLLIMPEXP_FWD_BASE wxSingleInstanceCheckerImpl *m_impl;
DECLARE_NO_COPY_CLASS(wxSingleInstanceChecker)
};
#endif // wxUSE_SNGLINST_CHECKER
#endif // _WX_SNGLINST_H_
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