move src into subdir

1 files changed, 24 insertions, 0 deletions

diff --git a/src/util.cc b/src/util.cc
new file mode 100644
index 0000000..7a1c4e6
--- /dev/null
+++ b/src/util.cc
@@ -0,0 +1,24 @@
+#include "util.h"
+
+#include <execinfo.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void DumpBacktrace(int skip_frames) {
+  void* stack[256];
+  int size = backtrace(stack, 256);
+  ++skip_frames;  // Skip ourselves as well.
+  backtrace_symbols_fd(stack + skip_frames, size - skip_frames, 2);
+}
+
+void Fatal(const char* msg, ...) {
+  va_list ap;
+  fprintf(stderr, "FATAL: ");
+  va_start(ap, msg);
+  vfprintf(stderr, msg, ap);
+  va_end(ap);
+  fprintf(stderr, "\n");
+  DumpBacktrace(1);
+  exit(1);
+}