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authorEric Andersen <andersen@codepoet.org>2002-02-13 09:32:52 +0000
committerEric Andersen <andersen@codepoet.org>2002-02-13 09:32:52 +0000
commit80e6061ac5deca193759b979d34906bfc9b857ef (patch)
tree51f5c410f9313c6892b50f27321b64db8cfbd737 /test/stdlib/testatexit.c
parent98cba6e7dd947aec0d4cf6e61f2f31318ac919e1 (diff)
Several test suite updates. The testatexit, teston_exit, and
pthread tests were contributed by Stefan Soucek
Diffstat (limited to 'test/stdlib/testatexit.c')
-rw-r--r--test/stdlib/testatexit.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/test/stdlib/testatexit.c b/test/stdlib/testatexit.c
new file mode 100644
index 000000000..374f7b8aa
--- /dev/null
+++ b/test/stdlib/testatexit.c
@@ -0,0 +1,74 @@
+/*
+ * This test program will register the maximum number of exit functions
+ * with atexit(). 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 (*vfuncp) (void);
+
+/* All functions call exit(), in order to test that exit functions can call
+ * exit() without screwing everything up. :)
+ */
+static void exitfunc0(void) { printf("Executing exitfunc0.\n"); exit(0);}
+static void exitfunc1(void) { printf("Executing exitfunc1.\n"); exit(0);}
+static void exitfunc2(void) { printf("Executing exitfunc2.\n"); exit(0);}
+static void exitfunc3(void) { printf("Executing exitfunc3.\n"); exit(0);}
+static void exitfunc4(void) { printf("Executing exitfunc4.\n"); exit(0);}
+static void exitfunc5(void) { printf("Executing exitfunc5.\n"); exit(0);}
+static void exitfunc6(void) { printf("Executing exitfunc6.\n"); exit(0);}
+static void exitfunc7(void) { printf("Executing exitfunc7.\n"); exit(0);}
+static void exitfunc8(void) { printf("Executing exitfunc8.\n"); exit(0);}
+static void exitfunc9(void) { printf("Executing exitfunc9.\n"); exit(0);}
+static void exitfunc10(void) { printf("Executing exitfunc10.\n"); exit(0);}
+static void exitfunc11(void) { printf("Executing exitfunc11.\n"); exit(0);}
+static void exitfunc12(void) { printf("Executing exitfunc12.\n"); exit(0);}
+static void exitfunc13(void) { printf("Executing exitfunc13.\n"); exit(0);}
+static void exitfunc14(void) { printf("Executing exitfunc14.\n"); exit(0);}
+static void exitfunc15(void) { printf("Executing exitfunc15.\n"); exit(0);}
+static void exitfunc16(void) { printf("Executing exitfunc16.\n"); exit(0);}
+static void exitfunc17(void) { printf("Executing exitfunc17.\n"); exit(0);}
+static void exitfunc18(void) { printf("Executing exitfunc18.\n"); exit(0);}
+static void exitfunc19(void) { printf("Executing exitfunc19.\n"); exit(0);}
+static void exitfunc20(void) { printf("Executing exitfunc20.\n"); exit(0);}
+static void exitfunc21(void) { printf("Executing exitfunc21.\n"); exit(0);}
+static void exitfunc22(void) { printf("Executing exitfunc22.\n"); exit(0);}
+static void exitfunc23(void) { printf("Executing exitfunc23.\n"); exit(0);}
+static void exitfunc24(void) { printf("Executing exitfunc24.\n"); exit(0);}
+
+static vfuncp 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 ATEXIT_LIMIT 20
+
+int
+main ( void )
+{
+ int i = 0;
+ int count = 0;
+ int numfuncs = sizeof(func_table)/sizeof(vfuncp);
+
+ /* loop until no more can be added */
+ while(count < ATEXIT_LIMIT && atexit(func_table[i]) >= 0) {
+ printf("Registered exitfunc%d with atexit()\n", i);
+ count++;
+ i = (i+1) % numfuncs;
+ }
+ printf("%d functions registered with atexit.\n", count);
+ /* implicit exit */
+}
+