72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
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/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2015 Danny Robson <danny@nerdcruft.net>
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*/
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#include "mutex_win32.hpp"
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#include "except.hpp"
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using util::threads::win32::mutex;
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///////////////////////////////////////////////////////////////////////////////
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mutex::mutex ():
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m_id (CreateMutex (nullptr, false, nullptr))
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{ ; }
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///////////////////////////////////////////////////////////////////////////////
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bool
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mutex::lock (void)
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{
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switch (WaitForSingleObject (m_id, INFINITE)) {
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case WAIT_OBJECT_0:
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return true;
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case WAIT_FAILED:
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win32_error::throw_code ();
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default:
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unreachable ();
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}
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}
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//-----------------------------------------------------------------------------
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bool
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mutex::lock (std::chrono::nanoseconds ns)
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{
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auto ms = std::chrono::duration_cast<std::chrono::milliseconds> (ns).count ();
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switch (WaitForSingleObject (m_id, ms)) {
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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_FAILED:
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win32_error::throw_code ();
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default:
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unreachable ();
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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void
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mutex::unlock (void)
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{
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if (ReleaseMutex (m_id))
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win32_error::throw_code ();
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}
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