Global Resource Coordinator: Basic service internals

services/resource_coordinator/public/cpp/coordination_unit_id.cc

Index: services/resource_coordinator/public/cpp/coordination_unit_id.cc
diff --git a/services/resource_coordinator/public/cpp/coordination_unit_id.cc b/services/resource_coordinator/public/cpp/coordination_unit_id.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f72057da12dd60b45fcc5ff659a43c6e79c6e4df
--- /dev/null
+++ b/services/resource_coordinator/public/cpp/coordination_unit_id.cc
@@ -0,0 +1,30 @@
+// Copyright 2017 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 "services/resource_coordinator/public/cpp/coordination_unit_id.h"
+
+#include <limits>
+
+#include "base/logging.h"
+#include "third_party/smhasher/src/MurmurHash2.h"
+
+namespace resource_coordinator {
+
+// The seed to use when taking the murmur2 hash of the id.
+const uint64_t kMurmur2HashSeed = 0;
+
+CoordinationUnitID::CoordinationUnitID()
+    : id(0), type(CoordinationUnitType::INVALID_TYPE) {}
+
+CoordinationUnitID::CoordinationUnitID(const CoordinationUnitType& type,
+                                       const std::string& new_id)
+    : type(type) {
+  DCHECK_GE(
+      static_cast<std::string::size_type>(std::numeric_limits<int>::max()),

[dcheng, 2017/04/18 05:40:46]

Maybe:

DCHECK(base::IsValueInRangeForNumericType<int>(new_id.size());

[oystein (OOO til 10th of July), 2017/04/18 20:55:33]

Done.

+      new_id.size());
+  id = MurmurHash2(&new_id.front(), static_cast<int>(new_id.size()),
+                   kMurmur2HashSeed);
+}
+
+}  // resource_coordinator