blob: 869884b313c303a468bd8b8a1c6793b113c07991 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
The following are examples of sh_syscalls.d.
This is a simple script to count Ruby methods and system calls. Here we trace
an example program - Code/Ruby/func_abc.rb
# rb_syscalls.d -c ./func_abc.rb
Tracing... Hit Ctrl-C to end.
Function A
Function B
Function C
Calls for PID 146493,
FILE TYPE NAME COUNT
func_abc.rb method Object::func_a 1
func_abc.rb method Object::func_b 1
func_abc.rb method Object::func_c 1
func_abc.rb syscall getpid 1
func_abc.rb syscall getrlimit 1
func_abc.rb syscall getrlimit64 1
func_abc.rb syscall mmap 1
func_abc.rb syscall munmap 1
func_abc.rb syscall rexit 1
func_abc.rb syscall schedctl 1
func_abc.rb syscall sigpending 1
func_abc.rb syscall sysconfig 1
func_abc.rb syscall sysi86 1
func_abc.rb syscall write 1
func_abc.rb syscall llseek 2
func_abc.rb syscall read 2
func_abc.rb syscall setcontext 2
func_abc.rb method IO::write 3
func_abc.rb method Module::method_added 3
func_abc.rb method Object::print 3
func_abc.rb method Object::sleep 3
func_abc.rb syscall fstat64 3
func_abc.rb syscall getgid 3
func_abc.rb syscall getuid 3
func_abc.rb syscall ioctl 3
func_abc.rb syscall pollsys 3
func_abc.rb syscall close 4
func_abc.rb syscall lwp_sigmask 4
func_abc.rb syscall open64 4
func_abc.rb syscall gtime 6
func_abc.rb syscall sigaction 12
func_abc.rb syscall brk 56
While tracing, three user-defined functions were called - func_a, func_b and
func_c. There were 3 instances of the IO::write method being called. There
were also many system calls made, including 56 brk()'s, and 12 sigaction()'s.
This script can provide an insight to how a Ruby program is interacting
with the system, by providing methods and system calls in the same output.
|
