diff options
Diffstat (limited to 'REORG.TODO/debug/backtrace-tst.c')
-rw-r--r-- | REORG.TODO/debug/backtrace-tst.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/REORG.TODO/debug/backtrace-tst.c b/REORG.TODO/debug/backtrace-tst.c new file mode 100644 index 0000000000..cc46c33c3c --- /dev/null +++ b/REORG.TODO/debug/backtrace-tst.c @@ -0,0 +1,45 @@ +#include <execinfo.h> +#include <inttypes.h> +#include <stdio.h> +#include <stdlib.h> +#include <stdint.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 *(const uint32_t *) p1 - *(const 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; +} |