Differences between z/OS tasks and POSIX threads

最新推荐文章于 2021-06-02 19:12:46 发布

原创最新推荐文章于 2021-06-02 19:12:46 发布 · 697 阅读

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本文探讨了z/OS任务与POSIX线程之间的关键区别：1. z/OS任务具有层级结构，而POSIX线程除了初始线程外没有层级；2. z/OS任务通常运行不同的程序，而POSIX线程在同一进程中运行相同的程序；3. z/OS任务可以独立或协作执行，而POSIX线程必须协作；4. z/OS在任务级别分配存储空间，而POSIX线程共享进程的所有存储空间。

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1> z/OS has a task hierarchy. POSIX threads have no hierarchy except for the initial thread which behaves differently from the other threads.

2> z/OS task usually run different programs. All POSIX threads in a process run the same program.

3> z/OS tasks may be independent or cooperating. POSIX threads must cooperate; they do not operate independently.

4> z/OS allocates storage at the task level, and some storage may be shared between tasks and some not. The programs can be located in common storage (CSA or LPA), in the private area below the 16 MB line, or in the private area above the 16 MB line.

5> All POSIX threads in a process share all storage allocated to the process.