3f66f6a5b3
This keyword is not expanded by Git which means it's not replaced with the correct revision value in the releases made using git-based scripts and it's confusing to have lines with unexpanded "$Id$" in the released files. As expanding them with Git is not that simple (it could be done with git archive and export-subst attribute) and there are not many benefits in having them in the first place, just remove all these lines. If nothing else, this will make an eventual transition to Git simpler. Closes #14487. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
130 lines
3.6 KiB
C++
130 lines
3.6 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: src/msw/snglinst.cpp
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// Purpose: implements wxSingleInstanceChecker class for Win32 using
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// named mutexes
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 08.06.01
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// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_SNGLINST_CHECKER && defined(__WIN32__)
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#ifndef WX_PRECOMP
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#include "wx/string.h"
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#include "wx/log.h"
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#endif //WX_PRECOMP
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#include "wx/snglinst.h"
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#include "wx/msw/private.h"
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// ----------------------------------------------------------------------------
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// wxSingleInstanceCheckerImpl: the real implementation class
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_BASE wxSingleInstanceCheckerImpl
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{
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public:
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wxSingleInstanceCheckerImpl()
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{
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// we don't care about m_wasOpened, it can't be accessed before being
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// initialized
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m_hMutex = NULL;
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}
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bool Create(const wxString& name)
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{
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m_hMutex = ::CreateMutex(NULL, FALSE, name.t_str());
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if ( !m_hMutex )
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{
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wxLogLastError(wxT("CreateMutex"));
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return false;
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}
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// mutex was either created or opened - see what really happened
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m_wasOpened = ::GetLastError() == ERROR_ALREADY_EXISTS;
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return true;
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}
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bool WasOpened() const
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{
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wxCHECK_MSG( m_hMutex, false,
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wxT("can't be called if mutex creation failed") );
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return m_wasOpened;
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}
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~wxSingleInstanceCheckerImpl()
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{
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if ( m_hMutex )
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{
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if ( !::CloseHandle(m_hMutex) )
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{
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wxLogLastError(wxT("CloseHandle(mutex)"));
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}
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}
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}
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private:
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// the result of the CreateMutex() call
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bool m_wasOpened;
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// the mutex handle, may be NULL
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HANDLE m_hMutex;
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wxDECLARE_NO_COPY_CLASS(wxSingleInstanceCheckerImpl);
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};
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// ============================================================================
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// wxSingleInstanceChecker implementation
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// ============================================================================
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bool wxSingleInstanceChecker::Create(const wxString& name,
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const wxString& WXUNUSED(path))
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{
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wxASSERT_MSG( !m_impl,
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wxT("calling wxSingleInstanceChecker::Create() twice?") );
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// creating unnamed mutex doesn't have the same semantics!
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wxASSERT_MSG( !name.empty(), wxT("mutex name can't be empty") );
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m_impl = new wxSingleInstanceCheckerImpl;
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return m_impl->Create(name);
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}
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bool wxSingleInstanceChecker::DoIsAnotherRunning() const
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{
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wxCHECK_MSG( m_impl, false, wxT("must call Create() first") );
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// if the mutex had been opened, another instance is running - otherwise we
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// would have created it
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return m_impl->WasOpened();
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}
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wxSingleInstanceChecker::~wxSingleInstanceChecker()
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{
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delete m_impl;
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}
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#endif // wxUSE_SNGLINST_CHECKER
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