gin/v8_isolate_memory_dump_provider.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 GIN_V8_ISOLATE_MEMORY_DUMP_PROVIDER_H_
   6 #define GIN_V8_ISOLATE_MEMORY_DUMP_PROVIDER_H_
   7
   8 #include <string>
   9
  10 #include "base/trace_event/memory_dump_provider.h"
  11 #include "gin/gin_export.h"
  12
  13 namespace gin {
  14
  15 class IsolateHolder;
  16
  17 // Memory dump provider for the chrome://tracing infrastructure. It dumps
  18 // summarized memory stats about the V8 Isolate.
  19 class V8IsolateMemoryDumpProvider
  20     : public base::trace_event::MemoryDumpProvider {
  21  public:
  22   explicit V8IsolateMemoryDumpProvider(IsolateHolder* isolate_holder);
  23   ~V8IsolateMemoryDumpProvider() override;
  24
  25   // MemoryDumpProvider implementation.
  26   bool OnMemoryDump(
  27       const base::trace_event::MemoryDumpArgs& args,
  28       base::trace_event::ProcessMemoryDump* process_memory_dump) override;
  29
  30  private:
  31   void DumpHeapStatistics(
  32       base::trace_event::ProcessMemoryDump* process_memory_dump);
  33
  34   IsolateHolder* isolate_holder_;  // Not owned.
  35
  36   DISALLOW_COPY_AND_ASSIGN(V8IsolateMemoryDumpProvider);
  37 };
  38
  39 }  // namespace gin
  40
  41 #endif  // GIN_V8_ISOLATE_MEMORY_DUMP_PROVIDER_H_