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/memory/singleton.h"
   8 #include "base/trace_event/trace_event.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   TRACE_EVENT0(
  25      "browser",
  26      "BrowserContextDependencyManager::RegisterProfilePrefsForServices");
  27   RegisterPrefsForServices(context, pref_registry);
  28 }
  29
  30 void BrowserContextDependencyManager::CreateBrowserContextServices(
  31     content::BrowserContext* context) {
  32   DoCreateBrowserContextServices(context, false);
  33 }
  34
  35 void BrowserContextDependencyManager::CreateBrowserContextServicesForTest(
  36     content::BrowserContext* context) {
  37   DoCreateBrowserContextServices(context, true);
  38 }
  39
  40 void BrowserContextDependencyManager::DoCreateBrowserContextServices(
  41     content::BrowserContext* context,
  42     bool is_testing_context) {
  43   TRACE_EVENT0(
  44       "browser",
  45       "BrowserContextDependencyManager::DoCreateBrowserContextServices")
  46   will_create_browser_context_services_callbacks_.Notify(context);
  47   DependencyManager::CreateContextServices(context, is_testing_context);
  48 }
  49
  50 void BrowserContextDependencyManager::DestroyBrowserContextServices(
  51     content::BrowserContext* context) {
  52   DependencyManager::DestroyContextServices(context);
  53 }
  54
  55 scoped_ptr<base::CallbackList<void(content::BrowserContext*)>::Subscription>
  56 BrowserContextDependencyManager::
  57 RegisterWillCreateBrowserContextServicesCallbackForTesting(
  58     const base::Callback<void(content::BrowserContext*)>& callback) {
  59   return will_create_browser_context_services_callbacks_.Add(callback);
  60 }
  61
  62 #ifndef NDEBUG
  63 void BrowserContextDependencyManager::AssertBrowserContextWasntDestroyed(
  64     content::BrowserContext* context) {
  65   DependencyManager::AssertContextWasntDestroyed(context);
  66 }
  67
  68 void BrowserContextDependencyManager::MarkBrowserContextLiveForTesting(
  69     content::BrowserContext* context) {
  70   DependencyManager::MarkContextLiveForTesting(context);
  71 }
  72 #endif  // NDEBUG
  73
  74 // static
  75 BrowserContextDependencyManager*
  76 BrowserContextDependencyManager::GetInstance() {
  77   return Singleton<BrowserContextDependencyManager>::get();
  78 }
  79
  80 BrowserContextDependencyManager::BrowserContextDependencyManager() {}
  81
  82 BrowserContextDependencyManager::~BrowserContextDependencyManager() {}
  83
  84 #ifndef NDEBUG
  85 void BrowserContextDependencyManager::DumpContextDependencies(
  86     const base::SupportsUserData* context) const {
  87   // Whenever we try to build a destruction ordering, we should also dump a
  88   // dependency graph to "/path/to/context/context-dependencies.dot".
  89   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
  90           kDumpBrowserContextDependencyGraphFlag)) {
  91     base::FilePath dot_file =
  92         static_cast<const content::BrowserContext*>(context)
  93             ->GetPath()
  94             .AppendASCII("browser-context-dependencies.dot");
  95     DumpDependenciesAsGraphviz("BrowserContext", dot_file);
  96   }
  97 }
  98 #endif  // NDEBUG