diff options
Diffstat (limited to 'test/stdlib/teston_exit.c')
| -rw-r--r-- | test/stdlib/teston_exit.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/test/stdlib/teston_exit.c b/test/stdlib/teston_exit.c new file mode 100644 index 000000000..ddfe506a4 --- /dev/null +++ b/test/stdlib/teston_exit.c @@ -0,0 +1,75 @@ +/* + * This test program will register the maximum number of exit functions + * with on_exit(). When this program exits, each exit function should get + * called in the reverse order in which it was registered. (If the system + * supports more than 25 exit functions, the function names will loop, but + * the effect will be the same. Feel free to add more functions if desired) + */ +#include <stdio.h> +#include <stdlib.h> + +typedef void (*efuncp) (int, void *); + +/* All functions call exit(), in order to test that exit functions can call + * exit() without screwing everything up. The value passed in through arg gets + * used as the next exit status. + */ +static void exitfunc0(int status, void *arg) { printf("Executing exitfunc0 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc1(int status, void *arg) { printf("Executing exitfunc1 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc2(int status, void *arg) { printf("Executing exitfunc2 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc3(int status, void *arg) { printf("Executing exitfunc3 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc4(int status, void *arg) { printf("Executing exitfunc4 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc5(int status, void *arg) { printf("Executing exitfunc5 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc6(int status, void *arg) { printf("Executing exitfunc6 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc7(int status, void *arg) { printf("Executing exitfunc7 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc8(int status, void *arg) { printf("Executing exitfunc8 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc9(int status, void *arg) { printf("Executing exitfunc9 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc10(int status, void *arg) { printf("Executing exitfunc10 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc11(int status, void *arg) { printf("Executing exitfunc11 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc12(int status, void *arg) { printf("Executing exitfunc12 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc13(int status, void *arg) { printf("Executing exitfunc13 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc14(int status, void *arg) { printf("Executing exitfunc14 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc15(int status, void *arg) { printf("Executing exitfunc15 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc16(int status, void *arg) { printf("Executing exitfunc16 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc17(int status, void *arg) { printf("Executing exitfunc17 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc18(int status, void *arg) { printf("Executing exitfunc18 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc19(int status, void *arg) { printf("Executing exitfunc19 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc20(int status, void *arg) { printf("Executing exitfunc20 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc21(int status, void *arg) { printf("Executing exitfunc21 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc22(int status, void *arg) { printf("Executing exitfunc22 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc23(int status, void *arg) { printf("Executing exitfunc23 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} +static void exitfunc24(int status, void *arg) { printf("Executing exitfunc24 (status=%d, arg=%d)\n", status, (int)arg); exit((int)arg);} + +static efuncp func_table[] = + { + exitfunc0, exitfunc1, exitfunc2, exitfunc3, exitfunc4, + exitfunc5, exitfunc6, exitfunc7, exitfunc8, exitfunc9, + exitfunc10, exitfunc11, exitfunc12, exitfunc13, exitfunc14, + exitfunc15, exitfunc16, exitfunc17, exitfunc18, exitfunc19, + exitfunc20, exitfunc21, exitfunc22, exitfunc23, exitfunc24 + }; + +/* glibc dynamically adds exit functions, so it will keep adding until + * it runs out of memory! So this will limit the number of exit functions + * we add in the loop below. uClibc has a set limit (currently 20), so the + * loop will go until it can't add any more (so it should not hit this limit). + */ +#define ON_EXIT_LIMIT 20 + +int +main ( void ) +{ + int i = 0; + int count = 0; + int numfuncs = sizeof(func_table)/sizeof(efuncp); + + /* loop until no more can be added */ + while(count < ON_EXIT_LIMIT && on_exit(func_table[i], (void *)count) >= 0) { + count++; + printf("Registered exitfunc%d with on_exit()\n", i); + i = (i+1) % numfuncs; + } + printf("%d functions registered with on_exit.\n", count); + exit(count); +} + |