109 lines
2.8 KiB
C++
109 lines
2.8 KiB
C++
/* akvirtualcamera, virtual camera for Mac and Windows.
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* Copyright (C) 2020 Gonzalo Exequiel Pedone
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*
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* akvirtualcamera is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* akvirtualcamera is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with akvirtualcamera. If not, see <http://www.gnu.org/licenses/>.
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*
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* Web-Site: http://webcamoid.github.io/
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*/
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#include <windows.h>
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#include "mutex.h"
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namespace AkVCam
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{
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class MutexPrivate
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{
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public:
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HANDLE m_mutex;
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std::string m_name;
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};
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}
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AkVCam::Mutex::Mutex(const std::string &name)
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{
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this->d = new MutexPrivate();
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this->d->m_mutex = CreateMutexA(nullptr,
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FALSE,
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name.empty()? nullptr: name.c_str());
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this->d->m_name = name;
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}
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AkVCam::Mutex::Mutex(const Mutex &other)
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{
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this->d = new MutexPrivate();
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this->d->m_mutex = CreateMutexA(nullptr,
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FALSE,
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other.d->m_name.empty()?
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nullptr: other.d->m_name.c_str());
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this->d->m_name = other.d->m_name;
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}
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AkVCam::Mutex::~Mutex()
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{
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if (this->d->m_mutex)
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CloseHandle(this->d->m_mutex);
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delete this->d;
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}
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AkVCam::Mutex &AkVCam::Mutex::operator =(const Mutex &other)
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{
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if (this != &other) {
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this->unlock();
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if (this->d->m_mutex)
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CloseHandle(this->d->m_mutex);
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this->d->m_mutex = CreateMutexA(nullptr,
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FALSE,
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other.d->m_name.empty()?
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nullptr: other.d->m_name.c_str());
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this->d->m_name = other.d->m_name;
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}
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return *this;
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}
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std::string AkVCam::Mutex::name() const
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{
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return this->d->m_name;
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}
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void AkVCam::Mutex::lock()
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{
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if (!this->d->m_mutex)
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return;
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WaitForSingleObject(this->d->m_mutex, INFINITE);
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}
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bool AkVCam::Mutex::tryLock(int timeout)
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{
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if (!this->d->m_mutex)
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return false;
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DWORD waitResult = WaitForSingleObject(this->d->m_mutex,
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!timeout? INFINITE: DWORD(timeout));
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return waitResult != WAIT_FAILED && waitResult != WAIT_TIMEOUT;
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}
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void AkVCam::Mutex::unlock()
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{
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if (!this->d->m_mutex)
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return;
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ReleaseMutex(this->d->m_mutex);
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}
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