1 files changed, 72 insertions, 0 deletions
diff --git a/src/common/bit_str.cc b/src/common/bit_str.cc
new file mode 100644
index 000000000..f14b2daad
--- /dev/null
+++ b/src/common/bit_str.cc
@@ -0,0 +1,72 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2016 SUSE LINUX GmbH
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+#include "common/bit_str.h"
+#include "common/Formatter.h"
+#include "include/ceph_assert.h"
+
+static void _dump_bit_str(
+    uint64_t bits,
+    std::ostream *out,
+    ceph::Formatter *f,
+    std::function<const char*(uint64_t)> func,
+    bool dump_bit_val)
+{
+  uint64_t b = bits;
+  int cnt = 0;
+  bool outted = false;
+
+  while (b && cnt < 64) {
+    uint64_t r = bits & (1ULL << cnt++);
+    if (r) {
+      if (out) {
+        if (outted)
+          *out << ",";
+        *out << func(r);
+        if (dump_bit_val) {
+          *out << "(" << r << ")";
+        }
+      } else {
+        ceph_assert(f != NULL);
+        if (dump_bit_val) {
+          f->dump_stream("bit_flag") << func(r)
+                                     << "(" << r << ")";
+        } else {
+          f->dump_stream("bit_flag") << func(r);
+        }
+      }
+      outted = true;
+    }
+    b >>= 1;
+  }
+  if (!outted && out)
+      *out << "none";
+}
+
+void print_bit_str(
+    uint64_t bits,
+    std::ostream &out,
+    const std::function<const char*(uint64_t)> &func,
+    bool dump_bit_val)
+{
+  _dump_bit_str(bits, &out, NULL, func, dump_bit_val);
+}
+
+void dump_bit_str(
+    uint64_t bits,
+    ceph::Formatter *f,
+    const std::function<const char*(uint64_t)> &func,
+    bool dump_bit_val)
+{
+  _dump_bit_str(bits, NULL, f, func, dump_bit_val);
+}