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Diffstat (limited to 'Examples/pl_syscalls_example.txt')
| -rw-r--r-- | Examples/pl_syscalls_example.txt | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Examples/pl_syscalls_example.txt b/Examples/pl_syscalls_example.txt new file mode 100644 index 000000000000..8cd509401708 --- /dev/null +++ b/Examples/pl_syscalls_example.txt @@ -0,0 +1,50 @@ +The following are examples of pl_syscalls.d. + +This is a simple script to count executed Perl subroutines and system calls. +Here it traces an example program, Code/Perl/func_abc.pl. + + # pl_syscalls.d -c ./func_abc.pl + Function A + Tracing... Hit Ctrl-C to end. + Function B + Function C + + Calls for PID 305173, + + FILE TYPE NAME COUNT + func_abc.pl sub func_a 1 + func_abc.pl sub func_b 1 + func_abc.pl sub func_c 1 + func_abc.pl syscall fcntl 1 + func_abc.pl syscall getrlimit 1 + func_abc.pl syscall mmap 1 + func_abc.pl syscall munmap 1 + func_abc.pl syscall rexit 1 + func_abc.pl syscall schedctl 1 + func_abc.pl syscall sigpending 1 + func_abc.pl syscall sysi86 1 + func_abc.pl syscall getgid 2 + func_abc.pl syscall getpid 2 + func_abc.pl syscall getuid 2 + func_abc.pl syscall sigaction 2 + func_abc.pl syscall sysconfig 2 + func_abc.pl syscall fstat64 3 + func_abc.pl syscall nanosleep 3 + func_abc.pl syscall read 3 + func_abc.pl syscall setcontext 3 + func_abc.pl syscall write 3 + func_abc.pl syscall close 4 + func_abc.pl syscall ioctl 4 + func_abc.pl syscall open64 4 + func_abc.pl syscall llseek 5 + func_abc.pl syscall gtime 7 + func_abc.pl syscall brk 20 + +While tracing, three subroutines were called - func_a(), func_b() and func_c(). +There were numerous system calls made, including 20 brk()'s, 7 gtime()'s +and 5 llseek()'s. + +This script can provide an insight to how an application is interacting +with the system, by providing both application subroutine calls and +system calls in the same output. + |