components/keyed_service/content/browser_context_dependency_manager.cc

   1 // Copyright 2014 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 "components/keyed_service/content/browser_context_dependency_manager.h"
   6
   7 #include "base/debug/trace_event.h"
   8 #include "base/memory/singleton.h"
   9 #include "content/public/browser/browser_context.h"
  10
  11 #ifndef NDEBUG
  12 #include "base/command_line.h"
  13 #include "base/files/file_util.h"
  14
  15 // Dumps dependency information about our browser context keyed services
  16 // into a dot file in the browser context directory.
  17 const char kDumpBrowserContextDependencyGraphFlag[] =
  18     "dump-browser-context-graph";
  19 #endif  // NDEBUG
  20
  21 void BrowserContextDependencyManager::RegisterProfilePrefsForServices(
  22     const content::BrowserContext* context,
  23     user_prefs::PrefRegistrySyncable* pref_registry) {
  24   RegisterPrefsForServices(context, pref_registry);
  25 }
  26
  27 void BrowserContextDependencyManager::CreateBrowserContextServices(
  28     content::BrowserContext* context) {
  29   DoCreateBrowserContextServices(context, false);
  30 }
  31
  32 void BrowserContextDependencyManager::CreateBrowserContextServicesForTest(
  33     content::BrowserContext* context) {
  34   DoCreateBrowserContextServices(context, true);
  35 }
  36
  37 void BrowserContextDependencyManager::DoCreateBrowserContextServices(
  38     content::BrowserContext* context,
  39     bool is_testing_context) {
  40   TRACE_EVENT0(
  41       "browser",
  42       "BrowserContextDependencyManager::DoCreateBrowserContextServices")
  43   will_create_browser_context_services_callbacks_.Notify(context);
  44   DependencyManager::CreateContextServices(context, is_testing_context);
  45 }
  46
  47 void BrowserContextDependencyManager::DestroyBrowserContextServices(
  48     content::BrowserContext* context) {
  49   DependencyManager::DestroyContextServices(context);
  50 }
  51
  52 scoped_ptr<base::CallbackList<void(content::BrowserContext*)>::Subscription>
  53 BrowserContextDependencyManager::
  54 RegisterWillCreateBrowserContextServicesCallbackForTesting(
  55     const base::Callback<void(content::BrowserContext*)>& callback) {
  56   return will_create_browser_context_services_callbacks_.Add(callback);
  57 }
  58
  59 #ifndef NDEBUG
  60 void BrowserContextDependencyManager::AssertBrowserContextWasntDestroyed(
  61     content::BrowserContext* context) {
  62   DependencyManager::AssertContextWasntDestroyed(context);
  63 }
  64
  65 void BrowserContextDependencyManager::MarkBrowserContextLiveForTesting(
  66     content::BrowserContext* context) {
  67   DependencyManager::MarkContextLiveForTesting(context);
  68 }
  69 #endif  // NDEBUG
  70
  71 // static
  72 BrowserContextDependencyManager*
  73 BrowserContextDependencyManager::GetInstance() {
  74   return Singleton<BrowserContextDependencyManager>::get();
  75 }
  76
  77 BrowserContextDependencyManager::BrowserContextDependencyManager() {}
  78
  79 BrowserContextDependencyManager::~BrowserContextDependencyManager() {}
  80
  81 #ifndef NDEBUG
  82 void BrowserContextDependencyManager::DumpContextDependencies(
  83     const base::SupportsUserData* context) const {
  84   // Whenever we try to build a destruction ordering, we should also dump a
  85   // dependency graph to "/path/to/context/context-dependencies.dot".
  86   if (CommandLine::ForCurrentProcess()->HasSwitch(
  87           kDumpBrowserContextDependencyGraphFlag)) {
  88     base::FilePath dot_file =
  89         static_cast<const content::BrowserContext*>(context)
  90             ->GetPath()
  91             .AppendASCII("browser-context-dependencies.dot");
  92     DumpDependenciesAsGraphviz("BrowserContext", dot_file);
  93   }
  94 }
  95 #endif  // NDEBUG