24、深入理解读写锁：原理、实现与应用

深入理解读写锁：原理、实现与应用

1. 线程与屏障的创建

在多线程编程中，我们常常需要创建一组线程并使用屏障来同步它们的执行。以下是创建线程并使用屏障的代码示例：

/* * Create a set of threads that will use the barrier. */ for (thread_count = 0; thread_count < THREADS; thread_count++) { thread[thread_count].increment = thread_count; thread[thread_count].number = thread_count; for (array_count = 0; array_count < ARRAY; array_count++) thread[thread_count].array[array_count] = array_count + 1; status = pthread_create (&thread [ thread_count ]. thread_id, NULL, thread_routine, (void*)&thread[thread_count]); if (status != 0) err_abort (status, "Create thread"); } /* * Now join with each of the threads. */ for (thread_count = 0; thread