debianforum.de

locking_test_script

SNIPPET_TEXT:

1. #!/bin/bash
2.  
3. run_locked_simple_lock() {
4.  
5.         while ! ./increment_number_simple_lock ;do
6.                 :
7.         done
8. }
9.  
10. run_locked_flock() {
11.  
12.         while ! ./increment_number_flock ;do
13.                 :
14.         done
15. }
16.  
17. # --- start test ---
18.  
19. echo
20.  
21. # write sequentially for testing with simple_lock
22. echo 0 >data.txt
23. rm -f ./bla-lock
24. for ((i=1;i<=100;i++));do
25.         ./increment_number_simple_lock
26. done
27. echo "Data Value after 100 sequential executions with simple lock: $(cat data.txt)"
28.  
29. # write sequentially for testing with flock
30. echo 0 > data.txt
31. for ((i=1;i<=100;i++));do
32.         ./increment_number_flock
33. done
34. echo "Data Value after 100 sequential executions with flock:       $(cat data.txt)"
35.  
36.  
37. echo
38. # write parallel for testing with simple_lock
39. echo 0 > data.txt
40. rm -f ./bla-lock
41. {
42. for ((i=1;i<=100;i++));do
43.         run_locked_simple_lock &
44. done
45. } >/dev/null 2>&1
46. wait
47. echo "Data Value after 100 parallel executions with simple lock:   $(printf "%3d" $(cat data.txt))"
48.  
49. # write parallel for testing with simple_lock
50. echo 0 > data.txt
51. {
52. for ((i=1;i<=100;i++));do
53.         run_locked_flock &
54. done
55. } >/dev/null 2>&1
56. wait
57. echo "Data Value after 100 parallel executions with flock          $(cat data.txt)"
58. echo

Quellcode

Hier kannst du den Code kopieren und ihn in deinen bevorzugten Editor einfügen. PASTEBIN_DOWNLOAD_SNIPPET_EXPLAIN