sql/sql_memory_dump_provider.cc

   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 #include "sql/sql_memory_dump_provider.h"
   6
   7 #include "base/trace_event/memory_dump_manager.h"
   8 #include "base/trace_event/process_memory_dump.h"
   9 #include "third_party/sqlite/sqlite3.h"
  10
  11 namespace sql {
  12
  13 // static
  14 SqlMemoryDumpProvider* SqlMemoryDumpProvider::GetInstance() {
  15   return base::Singleton<
  16       SqlMemoryDumpProvider,
  17       base::LeakySingletonTraits<SqlMemoryDumpProvider>>::get();
  18 }
  19
  20 SqlMemoryDumpProvider::SqlMemoryDumpProvider() = default;
  21
  22 SqlMemoryDumpProvider::~SqlMemoryDumpProvider() = default;
  23
  24 bool SqlMemoryDumpProvider::OnMemoryDump(
  25     const base::trace_event::MemoryDumpArgs& args,
  26     base::trace_event::ProcessMemoryDump* pmd) {
  27   sqlite3_int64 memory_used = 0;
  28   sqlite3_int64 memory_high_water = 0;
  29   int status = sqlite3_status64(SQLITE_STATUS_MEMORY_USED, &memory_used,
  30                                 &memory_high_water, /* resetFlag= */ 1);
  31   if (status != SQLITE_OK)
  32     return false;
  33
  34   base::trace_event::MemoryAllocatorDump* dump =
  35       pmd->CreateAllocatorDump("sqlite");
  36   dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
  37                   base::trace_event::MemoryAllocatorDump::kUnitsBytes,
  38                   memory_used);
  39   dump->AddScalar("malloc_high_wmark_size",
  40                   base::trace_event::MemoryAllocatorDump::kUnitsBytes,
  41                   memory_high_water);
  42
  43   sqlite3_int64 dummy_high_water = -1;
  44   sqlite3_int64 malloc_count = -1;
  45   status = sqlite3_status64(SQLITE_STATUS_MALLOC_COUNT, &malloc_count,
  46                             &dummy_high_water, /* resetFlag= */ 0);
  47   if (status == SQLITE_OK) {
  48     dump->AddScalar("malloc_count",
  49                     base::trace_event::MemoryAllocatorDump::kUnitsObjects,
  50                     malloc_count);
  51   }
  52
  53   const char* system_allocator_name =
  54       base::trace_event::MemoryDumpManager::GetInstance()
  55           ->system_allocator_pool_name();
  56   if (system_allocator_name) {
  57     pmd->AddSuballocation(dump->guid(), system_allocator_name);
  58   }
  59   return true;
  60 }
  61
  62 }  // namespace sql