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