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_HOST_GLOBALS_H_
6 #define CONTENT_RENDERER_PEPPER_HOST_GLOBALS_H_
7 
8 #include "base/compiler_specific.h"
9 #include "base/macros.h"
10 #include "content/renderer/pepper/host_var_tracker.h"
11 #include "ppapi/shared_impl/callback_tracker.h"
12 #include "ppapi/shared_impl/ppapi_globals.h"
13 #include "ppapi/shared_impl/resource_tracker.h"
14 #include "ppapi/shared_impl/var_tracker.h"
15 
16 namespace content {
17 
18 class PepperPluginInstanceImpl;
19 class PluginModule;
20 
21 class HostGlobals : public ppapi::PpapiGlobals {
22  public:
23   HostGlobals();
24   ~HostGlobals() override;
25 
26   // Getter for the global singleton. Generally, you should use
27   // PpapiGlobals::Get() when possible. Use this only when you need some
28   // host-specific functionality.
Get()29   inline static HostGlobals* Get() {
30     DCHECK(PpapiGlobals::Get()->IsHostGlobals());
31     return static_cast<HostGlobals*>(PpapiGlobals::Get());
32   }
33 
34   // PpapiGlobals implementation.
35   ppapi::ResourceTracker* GetResourceTracker() override;
36   ppapi::VarTracker* GetVarTracker() override;
37   ppapi::CallbackTracker* GetCallbackTrackerForInstance(
38       PP_Instance instance) override;
39   ppapi::thunk::PPB_Instance_API* GetInstanceAPI(PP_Instance instance) override;
40   ppapi::thunk::ResourceCreationAPI* GetResourceCreationAPI(
41       PP_Instance instance) override;
42   PP_Module GetModuleForInstance(PP_Instance instance) override;
43   std::string GetCmdLine() override;
44   void PreCacheFontForFlash(const void* logfontw) override;
45   void LogWithSource(PP_Instance instance,
46                      PP_LogLevel level,
47                      const std::string& source,
48                      const std::string& value) override;
49   void BroadcastLogWithSource(PP_Module module,
50                               PP_LogLevel level,
51                               const std::string& source,
52                               const std::string& value) override;
53   ppapi::MessageLoopShared* GetCurrentMessageLoop() override;
54   base::TaskRunner* GetFileTaskRunner() override;
55 
host_var_tracker()56   HostVarTracker* host_var_tracker() { return &host_var_tracker_; }
57 
58   // PP_Modules ----------------------------------------------------------------
59 
60   // Adds a new plugin module to the list of tracked module, and returns a new
61   // module handle to identify it.
62   PP_Module AddModule(PluginModule* module);
63 
64   // Called when a plugin modulde was deleted and should no longer be tracked.
65   // The given handle should be one generated by AddModule.
66   void ModuleDeleted(PP_Module module);
67 
68   // Returns a pointer to the plugin modulde object associated with the given
69   // modulde handle. The return value will be NULL if the handle is invalid.
70   PluginModule* GetModule(PP_Module module);
71 
72   // PP_Instances --------------------------------------------------------------
73 
74   // Adds a new plugin instance to the list of tracked instances, and returns a
75   // new instance handle to identify it.
76   PP_Instance AddInstance(PepperPluginInstanceImpl* instance);
77 
78   // Called when a plugin instance was deleted and should no longer be tracked.
79   // The given handle should be one generated by AddInstance.
80   void InstanceDeleted(PP_Instance instance);
81 
82   void InstanceCrashed(PP_Instance instance);
83 
84   // Returns a pointer to the plugin instance object associated with the given
85   // instance handle. The return value will be NULL if the handle is invalid or
86   // if the instance has crashed.
87   PepperPluginInstanceImpl* GetInstance(PP_Instance instance);
88 
89  private:
90   // PpapiGlobals overrides.
91   bool IsHostGlobals() const override;
92 
93   static HostGlobals* host_globals_;
94 
95   ppapi::ResourceTracker resource_tracker_;
96   HostVarTracker host_var_tracker_;
97 
98   // Tracks all live instances and their associated object.
99   typedef std::map<PP_Instance, PepperPluginInstanceImpl*> InstanceMap;
100   InstanceMap instance_map_;
101 
102   // Tracks all live modules. The pointers are non-owning, the PluginModule
103   // destructor will notify us when the module is deleted.
104   typedef std::map<PP_Module, PluginModule*> ModuleMap;
105   ModuleMap module_map_;
106 
107   scoped_refptr<base::TaskRunner> file_task_runner_;
108 
109   DISALLOW_COPY_AND_ASSIGN(HostGlobals);
110 };
111 
112 }  // namespace content
113 
114 #endif  // CONTENT_RENDERER_PEPPER_HOST_GLOBALS_H_
115