desktop/admin/win/tools/NCToolsShared/SimpleMutex.cpp

47 lines
1.1 KiB
C++

/*
* Copyright (C) by Michael Schuster <michael.schuster@nextcloud.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#include "NCTools.h"
#include "SimpleMutex.h"
SimpleMutex::SimpleMutex()
{
}
bool SimpleMutex::create(const std::wstring &name)
{
release();
// Mutex
_hMutex = CreateMutex(nullptr, TRUE, name.data());
if (GetLastError() == ERROR_ALREADY_EXISTS) {
CloseHandle(_hMutex);
_hMutex = nullptr;
return false;
}
return true;
}
void SimpleMutex::release()
{
// Release mutex
if (_hMutex) {
ReleaseMutex(_hMutex);
CloseHandle(_hMutex);
_hMutex = nullptr;
}
}