content/renderer/pepper/pepper_plugin_registry.h

   1 // Copyright (c) 2012 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 CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_REGISTRY_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_REGISTRY_H_
   7
   8 #include <list>
   9 #include <map>
  10
  11 #include "base/memory/ref_counted.h"
  12 #include "content/public/common/pepper_plugin_info.h"
  13
  14 namespace content {
  15 class PluginModule;
  16
  17 // This class holds references to all of the known pepper plugin modules.
  18 //
  19 // It keeps two lists. One list of preloaded in-process modules, and one list
  20 // is a list of all live modules (some of which may be out-of-process and hence
  21 // not preloaded).
  22 class PepperPluginRegistry {
  23  public:
  24   ~PepperPluginRegistry();
  25
  26   static PepperPluginRegistry* GetInstance();
  27
  28   // Retrieves the information associated with the given plugin info. The
  29   // return value will be NULL if there is no such plugin.
  30   //
  31   // The returned pointer is owned by the PluginRegistry.
  32   const PepperPluginInfo* GetInfoForPlugin(const WebPluginInfo& info);
  33
  34   // Returns an existing loaded module for the given path. It will search for
  35   // both preloaded in-process or currently active (non crashed) out-of-process
  36   // plugins matching the given name. Returns NULL if the plugin hasn't been
  37   // loaded.
  38   PluginModule* GetLiveModule(const base::FilePath& path);
  39
  40   // Notifies the registry that a new non-preloaded module has been created.
  41   // This is normally called for out-of-process plugins. Once this is called,
  42   // the module is available to be returned by GetModule(). The module will
  43   // automatically unregister itself by calling PluginModuleDestroyed().
  44   void AddLiveModule(const base::FilePath& path, PluginModule* module);
  45
  46   void PluginModuleDead(PluginModule* dead_module);
  47
  48  private:
  49   PepperPluginRegistry();
  50   void Initialize();
  51
  52   // All known pepper plugins.
  53   std::vector<PepperPluginInfo> plugin_list_;
  54
  55   // Plugins that have been preloaded so they can be executed in-process in
  56   // the renderer (the sandbox prevents on-demand loading).
  57   typedef std::map<base::FilePath, scoped_refptr<PluginModule> >
  58       OwningModuleMap;
  59   OwningModuleMap preloaded_modules_;
  60
  61   // A list of non-owning pointers to all currently-live plugin modules. This
  62   // includes both preloaded ones in preloaded_modules_, and out-of-process
  63   // modules whose lifetime is managed externally. This will contain only
  64   // non-crashed modules. If an out-of-process module crashes, it may
  65   // continue as long as there are WebKit references to it, but it will not
  66   // appear in this list.
  67   typedef std::map<base::FilePath, PluginModule*> NonOwningModuleMap;
  68   NonOwningModuleMap live_modules_;
  69
  70   DISALLOW_COPY_AND_ASSIGN(PepperPluginRegistry);
  71 };
  72
  73 }  // namespace content
  74
  75 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_REGISTRY_H_