templibunwind

2 files changed, 34 insertions, 0 deletions

diff --git a/src/util/debug.c b/src/util/debug.c
index 98b1853325..495b5310d0 100644
--- a/src/util/debug.c
+++ b/src/util/debug.c
@@ -76,3 +76,29 @@ env_var_as_boolean(const char *var_name, bool default_value)
       return default_value;
    }
 }
+
+#ifdef HAVE_LIBUNWIND
+void
+show_backtrace(void)
+{
+   unw_context_t uc;
+   int stack_num = 0;
+
+   unw_getcontext(&uc);
+   unw_init_local(&cursor, &uc);
+
+   while (unw_step(&cursor) > 0) {
+      char func[256];
+      if (unw_get_proc_name(&cursor, func, 255, &off) < 0) {
+
+         unw_cursor_t cursor;
+         unw_word_t ip;
+
+         unw_get_reg(&cursor, UNW_REG_IP, &ip);
+         printf("  #%d [%s+0x%x]\n ip = %lx, sp = %lx\n", (long) ip );
+      } else {
+         printf("  #%d [%s+0x%x]\n", stack_num++, func, (unsigned int)off);
+      }
+   }
+}
+#endif
diff --git a/src/util/debug.h b/src/util/debug.h
index 11a8561eb5..cde0eb461d 100644
--- a/src/util/debug.h
+++ b/src/util/debug.h
@@ -42,6 +42,14 @@ parse_debug_string(const char *debug,
 bool
 env_var_as_boolean(const char *var_name, bool default_value);
 
+#ifdef HAVE_LIBUNWIND
+#define UNW_LOCAL_ONLY
+#include <libunwind.h>
+void show_backtrace(void);
+#else
+#define show_backtrace do { } while (0)
+#endif
+
 #ifdef __cplusplus
 } /* extern C */
 #endif