sip代理服务器实现，linux下编程，基于osip2的代理服务器实现

在同一个进程地址空间内执行的两个线程。生产者线程生产物品，然后将物品放置在一个空缓冲区中供消费者线程消费。消费者线程从缓冲区中获得物品，然后释放缓冲区。当生产者线程生产物品时，如果没有空缓冲区可用，那么生产者线程必须等待消费者线程释放出一个空缓冲区。当消费者线程消费物品时，如果没有满的缓冲区，那么消费者线程将被阻塞，直到新的物品被生产出来。-In the same address space of a process implemented within the two threads. The producer thread production of goods, and then items placed in an empty buffer in the thread consumption for consumers. Consumer thread to acquire items from the buffer, and then release the buffer. When the producer thread is the production of goods, if there is no empty buffers are available, then the producer thread must wait for the Consumer thread to release an empty buffer. When a consumer thread consumer goods, if the buffer is not full, then the consumer thread will be blocked until the new items were produced.

这是浙大Linux教程配套课件，它为初学者提供了很好的平台，里面详细介绍了LINUX的安装和应用，不仅有文字，还有截图的详细介绍，让大家一看就懂-This is Zheda Linux courseware supporting tutorials, for beginners it provides a good platform, which details the installation of LINUX and applications, not only has the text, there is a screenshot of the detailed introduction, let everyone know one look on

tty工作台驱动，适合工作台驱动的所有底层工作。有借鉴价值！-tty driver table, suitable for table-driven work of all the ground floor. Have reference value!

进程列表程序，包含AIX, System V, SUNOS -The app for listing processes, containing AIX, System V, SUNOS

一个吸烟者问题的例子-an example of smokers

Sendmail是一款运行在Unix平台下的基于简单邮件传输协议smtp的电子邮件消息传输软件。1982年由Eric Allman在美国加州大学伯克利分校首次开发成功。在互联网上sendmail邮件系统所存储和转发的电子邮件数量比其他任何一种邮件系统处理得都多。 -err

unix系统下一个C语言实现的dns域名解析-dns

一个登录的程序，嘻嘻，希望对大家有所帮助-a login procedure, hee hee, and I hope to help everyone

Linux设备驱动例子源代码,介绍简单的驱动程序的编写入门指导-Linux device driver source code examples to introduce the simple driver guide the preparation of entry

应用平台 UNIX含源程序和SCO OpenServer 5下运行的目标文件。-application platform UNIX source code containing SCO OpenServer 5 and running under the target file.