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..3a66700b731b4527ad6ed7d958b9001f5ee0d14f
--- /dev/null
+++ b/services/resource_coordinator/public/cpp/coordination_unit_id.cc
@@ -0,0 +1,23 @@
+// 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 "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) {
+  id = MurmurHash2(&new_id.front(), new_id.size(), kMurmur2HashSeed);

[Primiano Tucci (use gerrit), 2017/04/11 18:04:51]

if you initialize this in the initializer list ou can make both id and type
const, which would make this class immutable, which might help reason about it
and avoid distraction bugs. (or maybe I'm missing something and this class needs
to be mutable, in which case ignore my comment)

[oystein (OOO til 10th of July), 2017/04/12 19:15:31]

Doesn't work with the Mojo serialization/deserialization stuff.

+}
+
+}  // resource_coordinator