sql/sql_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 SQL_SQL_MEMORY_DUMP_PROVIDER_H
   6 #define SQL_SQL_MEMORY_DUMP_PROVIDER_H
   7
   8 #include "base/component_export.h"
   9 #include "base/macros.h"
  10 #include "base/memory/singleton.h"
  11 #include "base/trace_event/memory_dump_provider.h"
  12
  13 namespace sql {
  14
  15 // Adds process-wide memory usage statistics about sqlite to chrome://tracing.
  16 // sql::Database::OnMemoryDump adds per-connection memory statistics.
  17 class COMPONENT_EXPORT(SQL) SqlMemoryDumpProvider
  18     : public base::trace_event::MemoryDumpProvider {
  19  public:
  20   static SqlMemoryDumpProvider* GetInstance();
  21
  22   // MemoryDumpProvider implementation.
  23   bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args,
  24                     base::trace_event::ProcessMemoryDump* pmd) override;
  25
  26  private:
  27   friend struct base::DefaultSingletonTraits<SqlMemoryDumpProvider>;
  28
  29   SqlMemoryDumpProvider();
  30   ~SqlMemoryDumpProvider() override;
  31
  32   DISALLOW_COPY_AND_ASSIGN(SqlMemoryDumpProvider);
  33 };
  34
  35 }  // namespace sql
  36
  37 #endif  // SQL_SQL_MEMORY_DUMP_PROVIDER_H