Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 65 insertions, 0 deletions

diff --git a/src/os/bluestore/bluestore_common.h b/src/os/bluestore/bluestore_common.h
new file mode 100755
index 000000000..f61a5dcfd
--- /dev/null
+++ b/src/os/bluestore/bluestore_common.h
@@ -0,0 +1,65 @@
+// -*- 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) 2014 Red Hat
+ *
+ * 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.
+ *
+ */
+
+#ifndef CEPH_OSD_BLUESTORE_COMMON_H
+#define CEPH_OSD_BLUESTORE_COMMON_H
+
+#include "include/intarith.h"
+#include "include/ceph_assert.h"
+#include "kv/KeyValueDB.h"
+
+template <class Bitset, class Func>
+void apply_for_bitset_range(uint64_t off,
+  uint64_t len,
+  uint64_t granularity,
+  Bitset &bitset,
+  Func f) {
+  auto end = round_up_to(off + len, granularity) / granularity;
+  ceph_assert(end <= bitset.size());
+  uint64_t pos = off / granularity;
+  while (pos < end) {
+    f(pos, bitset);
+    pos++;
+  }
+}
+
+// merge operators
+
+struct Int64ArrayMergeOperator : public KeyValueDB::MergeOperator {
+  void merge_nonexistent(
+    const char *rdata, size_t rlen, std::string *new_value) override {
+    *new_value = std::string(rdata, rlen);
+  }
+  void merge(
+    const char *ldata, size_t llen,
+    const char *rdata, size_t rlen,
+    std::string *new_value) override {
+    ceph_assert(llen == rlen);
+    ceph_assert((rlen % 8) == 0);
+    new_value->resize(rlen);
+    const ceph_le64* lv = (const ceph_le64*)ldata;
+    const ceph_le64* rv = (const ceph_le64*)rdata;
+    ceph_le64* nv = &(ceph_le64&)new_value->at(0);
+    for (size_t i = 0; i < rlen >> 3; ++i) {
+      nv[i] = lv[i] + rv[i];
+    }
+  }
+  // We use each operator name and each prefix to construct the
+  // overall RocksDB operator name for consistency check at open time.
+  const char *name() const override {
+    return "int64_array";
+  }
+};
+
+#endif