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线程的同步
虽然多线程能给我们带来好处,但是也有不少问题需要解决。例如,对于像磁盘驱动器这样独占性系统资源,由于线程可以执行进程的任何代码段,且线程的运...
线程的同步
虽然多线程能给我们带来好处,但是也有不少问题需要解决。例如,对于像磁盘驱动器这样独占性系统资源,由于线程可以执行进程的任何代码段,且线程的运行是由系统调度自动完成的,具有一定的不确定性,因此就有可能出现两个线程同时对磁盘驱动器进行操作,从而出现操作错误;又例如,对于银行系统的计算机来说,可能使用一个线程来更新其用户数据库,而用另外一个线程来读取数据库以响应储户的需要,极有可能读数据库的线程读取的是未完全更新的数据库,因为可能在读的时候只有一部分数据被更新过。-thread synchronization Although multithreading can bring us benefits, but there a lso many problems to be solved. For example, as disk drives such exclusivity system resources and can thread the process of implementation of any code, and the thread running by the scheduling system automatically and to a certain extent the uncertainty, So, then there could be two threads while the disk drives operate, which have operational errors; For example, For the computer banking system, may use a thread to update users of its database, and use another thread to read a database to respond to the needs of depositors, Reading is very likely to read threads database is not fully update the database, Reading may be because the time was only part of the updated dat
- 2022-03-26 17:09:07下载
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Post trough technology used in the communication process between the routines. A...
利用邮槽技术,在进程间进行通信的例程。希望和大家交流。-Post trough technology used in the communication process between the routines. And we hope that the exchanges.
- 2022-03-21 22:34:53下载
- 积分:1
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获得系统进程,个人的小程序。
获得系统进程,个人的小程序。-was systematic process, the individual"s small programs.
- 2022-02-10 09:44:54下载
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多线程编程,异步操作实例,如Mutex等
多线程编程,异步操作实例,如Mutex等-Multi-threaded programming, examples of asynchronous operation, such as Mutex, etc.
- 2023-07-26 10:30:04下载
- 积分:1
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多线程技术在VB。NET
Multithreading In VB .NET
- 2022-08-22 00:06:04下载
- 积分:1
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一个Windows下的线程库,模仿pthread的用法
一个Windows下的线程库,模仿pthread的用法
-Under a Windows Thread Library, imitating the use of pthread
- 2022-04-01 18:15:34下载
- 积分:1
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用线程实现动态改变图标
用线程实现动态改变图标-using threads to implement dynamic changes icon
- 2022-08-12 22:56:27下载
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显示出系统中的所有进程和每个服务进程的完整路径的源代码...
显示出系统中的所有进程和每个服务进程的完整路径的源代码-Shows that the system of all the process and the process of each service the full path to the source code
- 2023-04-06 12:10:03下载
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程序用C++模拟了操作系统中的三种最典型的简单的静态进程调度算法;先由用户动态输入生成模拟进程,使用了26种可供用户选择的典型语句(包括循环、选择结构),可处理...
程序用C++模拟了操作系统中的三种最典型的简单的静态进程调度算法;先由用户动态输入生成模拟进程,使用了26种可供用户选择的典型语句(包括循环、选择结构),可处理整型、布尔型与字符型三种数据与表达式计算;程序编制时主要采用的编程技术是:用语句链表记录进程语句,并用PCB链表,就绪队列链表,阻塞队列链表,执行队列链表,结束队列链表等数据表示进程处理过程中的相互关系,由于静态数据结构不适合处理数据量大小不定的数据,而动态队列结构适合于处理数据量大小可变数据的处理,因此在程序中采用动态链表对这些数据进行处理;使用信号量、P.V.操作实现进程的同步与互斥,模拟进程在操作系统中的运行-procedures C to simulate the operating system, the three most typical process simple static scheduling algorithm; First generation user input dynamic modeling process, the use of the 26 options are available to users of typical statement (including the circle, choose structure), can handle integer, boolean and three character expression data and calculation; the main procedures for the preparation of the programming technology : Listless statement recorded statement process, and PCB Chain, ready Queue List, blocking Queue List, the Executive Queue List, ending Queue List data processing, said the process of mutual relations, due to static state data structure is not suitable for handling data on the s
- 2023-08-27 14:25:03下载
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process of the operating system scheduler
操作系统进程调度程序-process of the operating system scheduler
- 2023-05-18 19:35:04下载
- 积分:1