P07 Synchronizing Merge 平行合并

Pattern 7 Structured Synchronizing Merge 平行合并 The convergence of two or more branches (which diverged earlier in the process at a uniquely identifiable point) into a single subsequent branch such that the thread of control is passed to the subsequent branch when each active incoming branch has been enabled. . 流程中的多个路径在一个点被汇合成一个单一的进程。如果多于一个的路径到达了，活动线程就需要进行同步。如果只有一个路径到达，那么其它的路径应该非同步的重新会聚。该模式假设在一个分支被激活后，不会在等待其它分支完成的过程中再次被激活。