心得分享
| 12/11 12/11OS作業三 | |
|---|---|
| 名稱 | 12/11OS作業三 |
| 日期 | 12/11 |
| 課程名稱 | 作業系統 |
| 指導教師 | 劉艾華 |
1.What kind of strategies we can have for using thread pools.
Unlimited treads could exhault system resources so we use a thread pools.
Create a number of threads at process startup and place them into a pool, where they sit
and wait for work.
2. Why the windows uses one to one mapping for the threads while there are many to many available?
ANS: It provides more concurrency than others by allowing another thread to run when a thread makes a blocking system call.It also allows multiple threads to run in parallel on multiprocessors.
3.Q: Please specify the differences between processes and threads.
A: Threads are used for small tasks, whereas processes are used for more ‘heavyweight’ tasks – basically the execution of applications. Another difference between a thread and a process is that threads within the same process share the same address space, whereas different processes do not.
更新日期：2015/12/27 下午 09:44:53
