98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* This file is part of the LibreOffice project.
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*
|
|
* This file incorporates work covered by the following license notice:
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed
|
|
* with this work for additional information regarding copyright
|
|
* ownership. The ASF licenses this file to you under the Apache
|
|
* License, Version 2.0 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
|
|
*/
|
|
|
|
#ifndef INCLUDED_COMPHELPER_SOLARMUTEX_HXX
|
|
#define INCLUDED_COMPHELPER_SOLARMUTEX_HXX
|
|
|
|
#include <sal/config.h>
|
|
|
|
#include <assert.h>
|
|
#include <atomic>
|
|
#include <thread>
|
|
|
|
#include <osl/mutex.hxx>
|
|
#include <comphelper/comphelperdllapi.h>
|
|
|
|
namespace comphelper {
|
|
|
|
|
|
/**
|
|
* SolarMutex, needed for VCL's Application::GetSolarMutex().
|
|
*
|
|
* The SolarMutex is the one big recursive code lock used
|
|
* to protect the vast majority of the LibreOffice code-base,
|
|
* in particular anything that is graphical and the cores of
|
|
* the applications.
|
|
*
|
|
* Treat this as a singleton, as its constructor sets a global
|
|
* pointing at itself.
|
|
*/
|
|
class COMPHELPER_DLLPUBLIC SolarMutex {
|
|
public:
|
|
typedef void (*BeforeReleaseHandler) ();
|
|
|
|
SolarMutex();
|
|
virtual ~SolarMutex();
|
|
|
|
void SetBeforeReleaseHandler( const BeforeReleaseHandler& rLink )
|
|
{ m_aBeforeReleaseHandler = rLink; }
|
|
|
|
void acquire( sal_uInt32 nLockCount = 1 );
|
|
sal_uInt32 release( bool bUnlockAll = false );
|
|
|
|
virtual bool tryToAcquire();
|
|
|
|
// returns true, if the mutex is owned by the current thread
|
|
virtual bool IsCurrentThread() const;
|
|
|
|
/// Help components to get the SolarMutex easily.
|
|
static SolarMutex *get();
|
|
|
|
protected:
|
|
virtual sal_uInt32 doRelease( bool bUnlockAll );
|
|
virtual void doAcquire( sal_uInt32 nLockCount );
|
|
|
|
osl::Mutex m_aMutex;
|
|
sal_uInt32 m_nCount;
|
|
|
|
private:
|
|
std::atomic<std::thread::id> m_nThreadId;
|
|
|
|
SolarMutex(const SolarMutex&) = delete;
|
|
SolarMutex& operator=(const SolarMutex&) = delete;
|
|
|
|
BeforeReleaseHandler m_aBeforeReleaseHandler;
|
|
};
|
|
|
|
inline void SolarMutex::acquire( sal_uInt32 nLockCount )
|
|
{
|
|
assert( nLockCount > 0 );
|
|
doAcquire( nLockCount );
|
|
}
|
|
|
|
inline sal_uInt32 SolarMutex::release( bool bUnlockAll )
|
|
{
|
|
return doRelease( bUnlockAll );
|
|
}
|
|
|
|
}
|
|
|
|
#endif // INCLUDED_COMPHELPER_SOLARMUTEX_HXX
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|