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authorUlrich Drepper <drepper@redhat.com>1998-06-08 19:06:31 +0000
committerUlrich Drepper <drepper@redhat.com>1998-06-08 19:06:31 +0000
commit2de7874e55b344d5270abc8832950cf09c6d7dd7 (patch)
tree6078fed9aa78dae16461616fe2bf8b05f901716d /debug/backtrace-tst.c
parent31f7410f5c413605f039e898151f01231f11efa5 (diff)
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Update.
1998-06-08 18:57 Ulrich Drepper <drepper@cygnus.com> * Makeconfig (subdirs): Add debug. * configure.in: Use sysdeps/generic/elf subdir if ELF platform. * libc.map: Add __backtrace, __backtrace_symbols, backtrace and backtrace_symbols. * sysdeps/generic/backtrace.c: New file. * sysdeps/generic/backtracesyms.c: New file. * sysdeps/generic/elf/backtracesyms.c: New file. * sysdeps/i386/backtrace.c: New file. * debug/Makefile: New file. * debug/backtrace-tst.c: New file. * debug/execinfo.h: New file.
Diffstat (limited to 'debug/backtrace-tst.c')
-rw-r--r--debug/backtrace-tst.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/debug/backtrace-tst.c b/debug/backtrace-tst.c
new file mode 100644
index 0000000..d899fb0
--- /dev/null
+++ b/debug/backtrace-tst.c
@@ -0,0 +1,44 @@
+#include <execinfo.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+
+static int
+compare (const void *p1, const void *p2)
+{
+ void *ba[20];
+ int n = backtrace (ba, sizeof (ba) / sizeof (ba[0]));
+ if (n != 0)
+ {
+ char **names = backtrace_symbols (ba, n);
+ if (names != NULL)
+ {
+ int i;
+ printf ("called from %s\n", names[0]);
+ for (i = 1; i < n; ++i)
+ printf (" %s\n", names[i]);
+ free (names);
+ }
+ }
+
+ return *(uint32_t *) p1 - *(uint32_t *) p2;
+}
+
+
+int
+main (int argc, char *argv[])
+{
+ uint32_t arr[20];
+ size_t cnt;
+
+ for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt)
+ arr[cnt] = random ();
+
+ qsort (arr, sizeof (arr) / sizeof (arr[0]), sizeof (arr[0]), compare);
+
+ for (cnt = 0; cnt < sizeof (arr) / sizeof (arr[0]); ++cnt)
+ printf ("%" PRIx32 "\n", arr[cnt]);
+
+ return 0;
+}