80fdcdb90e
Fixed commented names (path, filename, and extension) of files in include/ and src/. Prepended the names in src/ with "src/" everywhere, while starting those in include/wx/ with "wx/". git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67254 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
133 lines
3.7 KiB
C++
133 lines
3.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: src/os2/snglinst.cpp
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// Purpose: implements wxSingleInstanceChecker class for OS/2 using
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// named mutexes
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// Author: Vadim Zeitlin
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// Modified by: Lauri Nurmi (modified for OS/2)
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// Created: 08.02.2009
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// RCS-ID: $Id$
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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
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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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#define INCL_DOSSEMAPHORES
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#define INCL_DOSERRORS
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#include <os2.h>
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#include "wx/os2/private.h"
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// ----------------------------------------------------------------------------
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// wxSingleInstanceCheckerImpl: the real implementation class
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxSingleInstanceCheckerImpl
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{
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public:
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wxSingleInstanceCheckerImpl()
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{
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m_hMutex = NULL;
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m_anotherRunning = false;
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}
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bool Create(const wxString& name)
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{
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wxString semName;
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semName.Printf(wxT("\\SEM32\\%s"), name.c_str());
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int rc = DosCreateMutexSem(semName.c_str(), &m_hMutex, DC_SEM_SHARED, 1);
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if ( rc == NO_ERROR ) {
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m_anotherRunning = false;
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return true;
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} else if ( rc == ERROR_DUPLICATE_NAME ) {
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m_anotherRunning = true;
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return true;
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} else {
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m_anotherRunning = false; // we don't know for sure in this case
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wxLogLastError(wxT("DosCreateMutexSem"));
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return false;
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}
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}
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bool IsAnotherRunning() const
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{
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return m_anotherRunning;
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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 ( !::DosCloseMutexSem(m_hMutex) )
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{
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wxLogLastError(wxT("DosCloseMutexSem"));
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}
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}
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}
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private:
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// if true, creating the mutex either succeeded
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// or we know it failed because another app is running.
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bool m_anotherRunning;
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// the mutex handle, may be NULL
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HMTX m_hMutex;
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DECLARE_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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return m_impl->IsAnotherRunning();
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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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