Index: components/memory_coordinator/browser/memory_state_notifier.h |
diff --git a/components/memory_coordinator/browser/memory_state_notifier.h b/components/memory_coordinator/browser/memory_state_notifier.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4bbc8ccb68a2aa2b66f2ed910f2700d8cf1acb4b |
--- /dev/null |
+++ b/components/memory_coordinator/browser/memory_state_notifier.h |
@@ -0,0 +1,48 @@ |
+// Copyright 2016 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. |
+ |
+#ifndef COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_STATE_NOTIFIER_H_ |
+#define COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_STATE_NOTIFIER_H_ |
+ |
+#include <map> |
+#include <memory> |
+ |
+#include "base/threading/non_thread_safe.h" |
+#include "components/memory_coordinator/common/memory_coordinator_features.h" |
+#include "components/memory_coordinator/public/interfaces/child_memory_coordinator.mojom.h" |
+ |
+namespace memory_coordinator { |
+ |
+// MemoryStateNotifier sends memory events to ChildMemoryCoordinators using |
+// mojo messages. This isn't thread-safe. |
+class MemoryStateNotifier : public base::NonThreadSafe { |
+ public: |
+ MemoryStateNotifier(); |
+ ~MemoryStateNotifier(); |
+ |
+ // Add a ChildMemoryCoordinator. MemoryStateNotifier takes the ownership. |
+ // A child will be removed when a connection error happens. |
+ void AddChild(mojom::ChildMemoryCoordinatorPtr child); |
+ |
+ // Notify a memory event to all ChildMemoryCoordinators. |
+ void Notify(mojom::MemoryState state); |
+ |
+ // Iterate all clients and run a given callback. |
+ using IterateCallback = |
+ base::Callback<void(mojom::ChildMemoryCoordinatorPtr&)>; |
+ void IterateChildren(const IterateCallback& callback); |
+ |
+ private: |
+ int GetNextId(); |
+ void RemoveChild(int id); |
chrisha
2016/06/27 20:35:30
Documentation for these functions would be helpful
|
+ |
+ int next_id_ = 0; |
+ std::map<int, mojom::ChildMemoryCoordinatorPtr> children_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(MemoryStateNotifier); |
+}; |
+ |
+} // namespace memory_coordinator |
+ |
+#endif // COMPONENTS_MEMORY_COORDINATOR_BROWSER_MEMORY_STATE_NOTIFIER_H_ |