OMP_SCHEDULE:用于for循环并行化后的调度,它的值就是循环调度的类型; OMP_NUM_THREADS:用于设置并行域中的线程数; OMP_DYNAMIC:通过设定变量值,来确定是否允许动态设定并行域内的线程数; OMP_NESTED:指出是否可以并行嵌套。 2.5 OpenMP实战 2.5.1 安装OpenMP GCC从版本4.2.0开始提供对OpenMP
首先,我们需要定义一个线程池类,用于管理线程池的创建和销毁。 importthreadingclassThreadPool(object):def__init__(self,num_threads):self.num_threads=num_threads self.tasks=[]# 任务队列self.lock=threading.Lock()# 用于保证线程安全的锁defadd_task(self,task):self.lock.acquire()# 获取锁self.tasks....
Call this method to get the number of threads in the pool. 複製 int GetNumThreads( ) throw( ); Return Value Returns the number of threads in the pool. Requirements Header: atlutil.h See Also Concepts CThreadPool Class CThreadPool Members CThreadPool::GetSize...
voidset_num_threads(intnthreads) { TORCH_CHECK(nthreads >0,"Expected positive number of threads"); #ifndefC10_MOBILE TORCH_CHECK(nthreads >0,"Expected positive number of threads"); intno_value = NOT_SET; if(!num_intraop_threads.compare_exchange_strong(no_value, nthreads)) { ...
num_threads) t = threading.Thread(name=thread_name, target=_worker, args=(weakref.ref(self, weakref_cb), self._work_queue, self._initializer, self._initargs)) # 创建线程 t.daemon = True t.start() # 启动线程 self._threads.add(t) ...
CThreadPool::GetNumThreads 發行項 2015/06/09 本文內容 傳回值 需求 請參閱 呼叫這個方法會取得執行緒的數目在集區中。複製 int GetNumThreads( ) throw( ); 傳回值傳回的執行緒數目在集區中。需求Header: 函式請參閱參考CThreadPool Class...
deftest(num):print("Threads"num)# 新建ThreadPoolExecutor对象并指定最大的线程数量withThreadPoolExecutor(max_workers=3)asexecutor:# 提交多个任务到线程池中 executor.submit(test,1)executor.submit(test,2)executor.submit(test,3) 输出结果: 代码语言:javascript ...
explicitthreadpool(conststring& nameArg=string("ThreadPool"));~threadpool();//设置最大任务队列长度voidsetMaxQueueSize(intmaxSize){m_maxQueueSize=maxSize;}//设置回调函数voidsetThreadInitCallback(constTask& cb){m_threadInitCallback=cb;}//线程池启动,创建numThreads个线程跑起来voidstart(intnum...
AsioThreadPool::AsioThreadPool(int threadNum) : _work(new boost::asio::io_context::work(_service)){ for (int i = 0; i < threadNum; ++i) { _threads.emplace_back([this]() { _service.run(); }); } } 注意:work是通过std::unique_ptr进行管理的,所以work不能被拷贝,仅仅可以通过移...
void ThreadPool::start_threads(){ ceph_assert(ceph_mutex_is_locked(_lock)); while (_threads.size() < _num_threads) { //1. 线程数量到达配置线程数量之前,不断创建新线程对象 WorkThread *wt = new WorkThread(this); ldout(cct, 10) << "start_threads creating and starting " << wt <...