如何编写SystemTap脚本

下面代码示例演示了SystemTap 语法和控制结构。

[root@BL480-64 ~]#vi test1.stpglobal odds, evens probe begin {     # no 和ne 是局部整型变量     for (i = 0; i < 10; i++) {         if (i % 2) odds [no++] = i             else evens [ne++] = i     }     delete odds[2]     delete evens[3]     exit() } probe end {     foreach (x+ in odds)         printf ("odds[%d] = %d", x, odds[x])     foreach (x in evens-)          printf ("evens[%d] = %d", x, evens[x]) }

 保存退出。

[root@BL480-64 ~]#stap test1.stp

运行输出：

odds[0] = 1

odds[1] = 3

odds[3] = 7

odds[4] = 9

evens[4] = 8

evens[2] = 4

evens[1] = 2

evens[0] = 0

大家如果学习过perl、python脚本语言，会发现如此熟悉o(∩_∩)o…哈哈