libtask channel机理及调度理解

学习golang的时候libtask库的代码是一定要看的，需要深入理解chan和携程的运行机制，下面就结合libtask的源码说明下运行原理，如果理解的有偏差欢迎指正

下面是libtask中Channel的结构

 1 struct Alt
 2 {
 3   Channel   *c;
 4   void    *v;
 5   unsigned int  op;
 6   Task    *task;
 7   Alt   *xalt;
 8 };
 9 
10 struct Altarray
11 {
12   Alt   **a;
13   unsigned int  n;
14   unsigned int  m;
15 };
16 
17 struct Channel
18 {
19   unsigned int  bufsize;
20   unsigned int  elemsize;
21   unsigned char *buf;
22   unsigned int  nbuf;
23   unsigned int  off;
24   Altarray  asend;
25   Altarray  arecv;
26   char    *name;
27 };