2 * This test program will register the maximum number of exit functions
3 * with on_exit(). When this program exits, each exit function should get
4 * called in the reverse order in which it was registered. (If the system
5 * supports more than 25 exit functions, the function names will loop, but
6 * the effect will be the same. Feel free to add more functions if desired)
11 typedef void (*efuncp) (int, void *);
13 /* All functions call exit(), in order to test that exit functions can call
14 * exit() without screwing everything up. The value passed in through arg gets
15 * used as the next exit status.
17 static void exitfunc0(int status, void *arg) { printf("Executing exitfunc0 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
18 static void exitfunc1(int status, void *arg) { printf("Executing exitfunc1 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
19 static void exitfunc2(int status, void *arg) { printf("Executing exitfunc2 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
20 static void exitfunc3(int status, void *arg) { printf("Executing exitfunc3 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
21 static void exitfunc4(int status, void *arg) { printf("Executing exitfunc4 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
22 static void exitfunc5(int status, void *arg) { printf("Executing exitfunc5 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
23 static void exitfunc6(int status, void *arg) { printf("Executing exitfunc6 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
24 static void exitfunc7(int status, void *arg) { printf("Executing exitfunc7 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
25 static void exitfunc8(int status, void *arg) { printf("Executing exitfunc8 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
26 static void exitfunc9(int status, void *arg) { printf("Executing exitfunc9 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
27 static void exitfunc10(int status, void *arg) { printf("Executing exitfunc10 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
28 static void exitfunc11(int status, void *arg) { printf("Executing exitfunc11 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
29 static void exitfunc12(int status, void *arg) { printf("Executing exitfunc12 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
30 static void exitfunc13(int status, void *arg) { printf("Executing exitfunc13 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
31 static void exitfunc14(int status, void *arg) { printf("Executing exitfunc14 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
32 static void exitfunc15(int status, void *arg) { printf("Executing exitfunc15 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
33 static void exitfunc16(int status, void *arg) { printf("Executing exitfunc16 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
34 static void exitfunc17(int status, void *arg) { printf("Executing exitfunc17 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
35 static void exitfunc18(int status, void *arg) { printf("Executing exitfunc18 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
36 static void exitfunc19(int status, void *arg) { printf("Executing exitfunc19 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
37 static void exitfunc20(int status, void *arg) { printf("Executing exitfunc20 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
38 static void exitfunc21(int status, void *arg) { printf("Executing exitfunc21 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
39 static void exitfunc22(int status, void *arg) { printf("Executing exitfunc22 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
40 static void exitfunc23(int status, void *arg) { printf("Executing exitfunc23 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
41 static void exitfunc24(int status, void *arg) { printf("Executing exitfunc24 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);}
43 static efuncp func_table[] =
45 exitfunc0, exitfunc1, exitfunc2, exitfunc3, exitfunc4,
46 exitfunc5, exitfunc6, exitfunc7, exitfunc8, exitfunc9,
47 exitfunc10, exitfunc11, exitfunc12, exitfunc13, exitfunc14,
48 exitfunc15, exitfunc16, exitfunc17, exitfunc18, exitfunc19,
49 exitfunc20, exitfunc21, exitfunc22, exitfunc23, exitfunc24
52 /* glibc dynamically adds exit functions, so it will keep adding until
53 * it runs out of memory! So this will limit the number of exit functions
54 * we add in the loop below. uClibc has a set limit (currently 20), so the
55 * loop will go until it can't add any more (so it should not hit this limit).
57 #define ON_EXIT_LIMIT 20
64 int numfuncs = sizeof(func_table)/sizeof(efuncp);
66 /* loop until no more can be added */
67 while(count < ON_EXIT_LIMIT && on_exit(func_table[i], (void *)count) >= 0) {
69 printf("Registered exitfunc%d with on_exit()\n", i);
72 printf("%d functions registered with on_exit.\n", count);