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78 lines
1.4 KiB
C++
Executable File
78 lines
1.4 KiB
C++
Executable File
//
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// NamedMutex_WIN32.cpp
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//
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// $Id: //poco/1.4/Foundation/src/NamedMutex_WIN32U.cpp#1 $
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//
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// Library: Foundation
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// Package: Processes
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// Module: NamedMutex
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#include "Poco/NamedMutex_WIN32U.h"
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#include "Poco/Exception.h"
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#include "Poco/UnicodeConverter.h"
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namespace Poco {
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NamedMutexImpl::NamedMutexImpl(const std::string& name):
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_name(name)
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{
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UnicodeConverter::toUTF16(_name, _uname);
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_mutex = CreateMutexW(NULL, FALSE, _uname.c_str());
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if (!_mutex)
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throw SystemException("cannot create named mutex", _name);
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}
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NamedMutexImpl::~NamedMutexImpl()
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{
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CloseHandle(_mutex);
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}
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void NamedMutexImpl::lockImpl()
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{
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switch (WaitForSingleObject(_mutex, INFINITE))
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{
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case WAIT_OBJECT_0:
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return;
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case WAIT_ABANDONED:
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throw SystemException("cannot lock named mutex (abadoned)", _name);
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default:
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throw SystemException("cannot lock named mutex", _name);
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}
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}
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bool NamedMutexImpl::tryLockImpl()
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{
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switch (WaitForSingleObject(_mutex, 0))
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{
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case WAIT_OBJECT_0:
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return true;
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case WAIT_TIMEOUT:
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return false;
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case WAIT_ABANDONED:
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throw SystemException("cannot lock named mutex (abadoned)", _name);
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default:
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throw SystemException("cannot lock named mutex", _name);
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}
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}
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void NamedMutexImpl::unlockImpl()
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{
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ReleaseMutex(_mutex);
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}
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} // namespace Poco
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