Repo created

TMessagesProj/jni/voip/webrtc/base/metrics/metrics_hashes.cc

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+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/metrics/metrics_hashes.h"
+
+#include "base/hash/md5.h"
+#include "base/logging.h"
+#include "base/sys_byteorder.h"
+
+namespace base {
+
+namespace {
+
+// Converts the 8-byte prefix of an MD5 hash into a uint64_t value.
+inline uint64_t DigestToUInt64(const base::MD5Digest& digest) {
+  uint64_t value;
+  DCHECK_GE(sizeof(digest.a), sizeof(value));
+  memcpy(&value, digest.a, sizeof(value));
+  return base::NetToHost64(value);
+}
+
+}  // namespace
+
+uint64_t HashMetricName(base::StringPiece name) {
+  base::MD5Digest digest;
+  base::MD5Sum(name.data(), name.size(), &digest);
+  return DigestToUInt64(digest);
+}
+
+}  // namespace metrics