我可以在shell中显示RTP的全局变量吗？

Question

在VxWorks中，我可以像这样在shell中显示全局变量：

 
-> my_global 
my_global = 0x103c4110: value = 4 = 0x4 

有没有办法做同样的用RTP全局变量？

Answer 1

通过使用命令（cmd）解释器并附加到RTP，可以在特定的RTP中显示全局变量。 下面是带括号的注释示例。

 
-> cmd         (switch to command interpreter) 
[vxWorks *]# rtp exec Hello_RTP.vxe & 
Launching process 'Hello_RTP.vxe' ... 
Process 'Hello_RTP.vxe' (process Id = 0x105e4d50) launched. 
Attachment number for process 'Hello_RTP.vxe' is %1. 
[vxWorks *]# echo $my_global    (display my_global in the kernel context) 
0x4 
[vxWorks *]# %1       (attach to RTP - can also use rtp attach) 
[Hello_RTP]# echo $my_global 
0x6b7         (global variable from RTP context) 
[Hello_RTP]# echo $my_global 
0x16e1         (same global variable..it increments) 
[Hello_RTP]# %0       (detach from RTP. Go to kernel) 
[vxWorks *]# echo $my_global    (back to kernel context) 
0x4 

请注意，这仅适用于VxWorks 6.x在6版之前，vxWorks中没有RTP。