content/child/web_memory_dump_provider_adapter.h

   1 // Copyright 2015 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_WEB_MEMORY_DUMP_PROVIDER_ADAPTER_H_
   6 #define CONTENT_CHILD_WEB_MEMORY_DUMP_PROVIDER_ADAPTER_H_
   7
   8 #include "base/macros.h"
   9 #include "base/trace_event/memory_dump_provider.h"
  10
  11 namespace blink {
  12 class WebMemoryDumpProvider;
  13 }  // namespace blink
  14
  15 namespace content {
  16
  17 // Adapter class which makes it possible to register a WebMemoryDumpProvider (
  18 // from blink) to base::trace_event::MemoryDumpManager, which expects a
  19 // MemoryDumpProvider instead.
  20 // This is essentially proxying the OnMemoryDump from chromium base to blink.
  21 class WebMemoryDumpProviderAdapter
  22     : public base::trace_event::MemoryDumpProvider {
  23  public:
  24   explicit WebMemoryDumpProviderAdapter(blink::WebMemoryDumpProvider* wmdp);
  25   ~WebMemoryDumpProviderAdapter() override;
  26
  27   // base::trace_event::MemoryDumpProvider implementation.
  28   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
  29                     base::trace_event::ProcessMemoryDump* pmd) override;
  30
  31   bool is_registered() const { return is_registered_; }
  32   void set_is_registered(bool is_registered) { is_registered_ = is_registered; }
  33
  34  private:
  35   // The underlying WebMemoryDumpProvider instance to which the OnMemoryDump()
  36   // calls will be proxied to.
  37   blink::WebMemoryDumpProvider* web_memory_dump_provider_;  // Not owned.
  38
  39   // True iff this has been registered with the MDM (and not unregistered yet).
  40   bool is_registered_;
  41
  42   DISALLOW_COPY_AND_ASSIGN(WebMemoryDumpProviderAdapter);
  43 };
  44
  45 }  // namespace content
  46
  47 #endif  // CONTENT_CHILD_WEB_MEMORY_DUMP_PROVIDER_ADAPTER_H_