Split ppapi::PluginList from PepperPluginRegistry so that DRT could load pepper plugins.

webkit/plugins/ppapi/ppapi_plugin_list.h

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_LIST_H_
+#define WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_LIST_H_
+
+#include <map>
+#include <vector>
+
+#include "webkit/plugins/ppapi/ppapi_plugin_info.h"
+
+namespace webkit {
+namespace ppapi {
+
+// This class holds references to all of the known pepper plugin modules.
+//
+// It keeps two lists. One list of preloaded in-process modules, and one list
+// is a list of all live modules (some of which may be out-of-process and hence
+// not preloaded).
+class PluginList {
+ public:
+  PluginList();
+  ~PluginList();
+
+  // The following functions add plugins modules to the list.
+  // They must be called before calling Load/PreloadModules.
+
+  // Returns the list of all known plugins.
+  const std::vector<PluginInfo>& plugin_list() const { return plugin_list_; }
+
+  void RegisterAll();
+
+  // Loads and initializes all known plugins.
+  void LoadModules();
+
+  // Loads the external libraries but does not initialize them (i.e., does not
+  // call PPP_InitializeModule). This is needed by the zygote on Linux to get
+  // access to the plugins before entering the sandbox.
+  void PreloadModules();
+
+  // Retrieves the information associated with the given plugin info. The
+  // return value will be NULL if there is no such plugin.
+  //
+  // The returned pointer is owned by PluginList.
+  const PluginInfo* GetInfoForPlugin(const FilePath& plugin_path);
+
+  // Returns an existing loaded module for the given path. It will search for
+  // both preloaded in-process or currently active (non crashed) out-of-process
+  // plugins matching the given name. Returns NULL if the plugin hasn't been
+  // loaded.
+  PluginModule* GetLiveModule(const FilePath& path);
+
+  // Notifies the registry that a new non-preloaded module has been created.
+  // This is normally called for out-of-process plugins. Once this is called,
+  // the module is available to be returned by GetModule(). The module will
+  // automatically unregister itself by calling PluginModuleDestroyed().
+  void AddLiveModule(const FilePath& path, PluginModule* module);
+
+  // PluginDelegate::ModuleLifetime implementation.
+  virtual void PluginModuleDead(PluginModule* dead_module);
+
+ private:
+  // Adds plugins specified in the command line.
+  void AddFromCommandLine();
+
+  // All known pepper plugins.
+  std::vector<PluginInfo> plugin_list_;
+
+  // Plugins that have been preloaded so they can be executed in-process in
+  // the renderer (the sandbox prevents on-demand loading).
+  typedef std::map<FilePath, scoped_refptr<PluginModule> > OwningModuleMap;
+  OwningModuleMap preloaded_modules_;
+
+  // A list of non-owning pointers to all currently-live plugin modules. This
+  // includes both preloaded ones in preloaded_modules_, and out-of-process
+  // modules whose lifetime is managed externally. This will contain only
+  // non-crashed modules. If an out-of-process module crashes, it may
+  // continue as long as there are WebKit references to it, but it will not
+  // appear in this list.
+  typedef std::map<FilePath, PluginModule*> NonOwningModuleMap;
+  NonOwningModuleMap live_modules_;
+
+  DISALLOW_COPY_AND_ASSIGN(PluginList);
+};
+
+}  // namespace ppapi
+}  // namespace webkit
+
+#endif  // WEBKIT_PLUGINS_PPAPI_PPAPI_PLUGIN_LIST_H_