从uclibc的malloc和glib的glist、timeout提取出来的代码，用于嵌入式开发。分配一块内存用于动态内存，有定时功能，提供双向链表这种容器。用于没有操作系统和c标准库支持的环境。-Uclibc' s malloc and glib from the glist, timeout extracted the code for embedded development. A memory for dynamic memory allocation, there is timi

这个是操作系统大实验的第一个实验的实现方法，在Linux环境下实现双向链表并展示线程切换所带来的错误-This is the operating system' s first big experiment experimental realization, in the Linux environment to achieve two-way linked list and display the error caused by the thread switch