Cross-process postMessage

content/browser/frame_mapper.h

+// Copyright (c) 2011 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 CONTENT_BROWSER_FRAME_MAPPER_H_
+#define CONTENT_BROWSER_FRAME_MAPPER_H_
+
+#include "base/atomic_sequence_num.h"
+#include "base/hash_tables.h"
+#include "content/browser/browsing_instance_frame_id.h"
+#include "content/common/content_export.h"
+
+namespace content {
+class CONTENT_EXPORT FrameMapper {

[Charlie Reis, 2011/12/01 23:13:02]

Maybe FrameMap?

[supersat, 2011/12/09 23:08:20]

Done.

+ public:
+  FrameMapper();
+  virtual ~FrameMapper();
+
+  int64 AllocateFrameId();
+  BrowsingInstanceFrame* InitializeFrameId(int64 frame_id, bool is_top_level);
+
+  BrowsingInstanceFrame* AllocateNewTopLevelFrameId();
+  BrowsingInstanceFrame* FindById(int64 id);
+  BrowsingInstanceFrame* FindByWebKitId(int render_process_host_id,
+                                        int64 frame_id);
+  BrowsingInstanceFrame* FindTopLevelFrameByProcessAndRoute(int process_id,
+                                                            int route_id);
+
+  void UpdateFrame(BrowsingInstanceFrame* frame,
+                   int render_process_host_id,
+                   int route_id,
+                   int64 frame_id);
+  void RemoveFrame(BrowsingInstanceFrame* frame);
+
+ private:
+  typedef base::hash_map<int64, BrowsingInstanceFrame*> FrameIdMap;
+  typedef base::hash_map<
+      BrowsingInstanceFrame::WebKitFrameIdTuple,
+      BrowsingInstanceFrame*> WebKitFrameIdMap;
+
+
+  // TODO(supersat): Make this 64-bit?
+  base::AtomicSequenceNumber next_frame_id_;
+  FrameIdMap frame_id_map_;
+  WebKitFrameIdMap webkit_frame_id_map_;
+
+  DISALLOW_COPY_AND_ASSIGN(FrameMapper);
+};
+
+}  // namespace content
+#endif  // CONTENT_BROWSER_FRAME_MAPPER_H_