C++ (Cpp) shared_ptr::Alloc示例

void Leafcutter::leafcut(shared_ptr<Image<Vec4f> > image, shared_ptr<LightTree > lightTree, uint32_t samples, shared_ptr<ReportHandler> report)
{
    _report = report;
    _image = image;
    _lightTree = lightTree;

    _nCore = pthread_num_processors_np();

    stringstream sout;
    sout << "Leafcut on " << _nCore << " threads";
    if (_report) _report->beginActivity(sout.str());

    uint32_t lightNum = lightTree->DirectionalLightNum() + lightTree->OrientedLightNum();
    image->Alloc(lightNum, samples);
    _curLine = 0;

    _mutex = PTHREAD_MUTEX_INITIALIZER;
    pthread_mutex_init(&_mutex, NULL);
    vector<pthread_t> threads(_nCore);

    _sampler->BeginPixel(samples);
    for (uint64_t idx = 0; idx < threads.size(); idx++)
    {
        pthread_create(&threads[idx], NULL, TreeWalkThread, this);
    }

    for (uint64_t idx = 0; idx < threads.size(); idx++)
    {
        pthread_join(threads[idx], NULL);
    }
    _sampler->EndPixel();

    pthread_mutex_destroy(&_mutex);
    if (_report) _report->endActivity();
}