用GDB调试多进程程序,仅仅是一个简单的多进程程序，在我们平时开发的多进程程序远远比这个复杂，但是调试基本原理是不变，有一些技巧则需要我们在实践中慢慢摸索-GDB debugging process with many procedures, just a simple multi-process procedures, in our normal development process of many procedures is much lower than those of this co