content/child/thread_safe_sender.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_CHILD_THREAD_SAFE_SENDER_H_
   6 #define CONTENT_CHILD_THREAD_SAFE_SENDER_H_
   7
   8 #include "base/gtest_prod_util.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "content/common/content_export.h"
  11 #include "ipc/ipc_sender.h"
  12
  13 namespace base {
  14 class SingleThreadTaskRunner;
  15 }
  16
  17 namespace IPC {
  18 class SyncMessageFilter;
  19 }
  20
  21 namespace content {
  22 class ChildThreadImpl;
  23
  24 // The class of Sender returned by ChildThreadImpl::thread_safe_sender().
  25 class CONTENT_EXPORT ThreadSafeSender
  26     : public IPC::Sender,
  27       public base::RefCountedThreadSafe<ThreadSafeSender> {
  28  public:
  29   bool Send(IPC::Message* msg) override;
  30
  31  protected:
  32   ThreadSafeSender(
  33       const scoped_refptr<base::SingleThreadTaskRunner>& main_task_runner,
  34       const scoped_refptr<IPC::SyncMessageFilter>& sync_filter);
  35   ~ThreadSafeSender() override;
  36
  37  private:
  38   friend class ChildThreadImpl;  // for construction
  39   friend class IndexedDBDispatcherTest;
  40   friend class WebIDBCursorImplTest;
  41   friend class base::RefCountedThreadSafe<ThreadSafeSender>;
  42
  43   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
  44   scoped_refptr<IPC::SyncMessageFilter> sync_filter_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(ThreadSafeSender);
  47 };
  48
  49 }  // namespace content
  50
  51 #endif  // CONTENT_CHILD_THREAD_SAFE_SENDER_H_