chrome/renderer/pepper/pnacl_translation_resource_host.h

   1 // Copyright 2013 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 CHROME_RENDERER_PEPPER_PNACL_TRANSLATION_RESOURCE_HOST_H_
   6 #define CHROME_RENDERER_PEPPER_PNACL_TRANSLATION_RESOURCE_HOST_H_
   7
   8 #include <map>
   9 #include <vector>
  10
  11 #include "ipc/ipc_channel_proxy.h"
  12 #include "ipc/ipc_platform_file.h"
  13 #include "ppapi/c/private/pp_file_handle.h"
  14 #include "ppapi/shared_impl/tracked_callback.h"
  15
  16 namespace nacl {
  17 struct PnaclCacheInfo;
  18 }
  19
  20 // A class to keep track of requests made to the browser for resources that the
  21 // PNaCl translator needs (e.g. descriptors for the translator nexes, temp
  22 // files, and cached translations).
  23
  24 // "Resource" might not be the best name for the various things that pnacl
  25 // needs from the browser since "Resource" is a Pepper thing...
  26 class PnaclTranslationResourceHost : public IPC::ChannelProxy::MessageFilter {
  27  public:
  28   explicit PnaclTranslationResourceHost(
  29       const scoped_refptr<base::MessageLoopProxy>& io_message_loop);
  30   void RequestNexeFd(int render_view_id,
  31                      PP_Instance instance,
  32                      const nacl::PnaclCacheInfo& cache_info,
  33                      PP_Bool* is_hit,
  34                      PP_FileHandle* file_handle,
  35                      scoped_refptr<ppapi::TrackedCallback> callback);
  36   void ReportTranslationFinished(PP_Instance instance, PP_Bool success);
  37
  38   // Ensure that PNaCl resources (pnacl-llc.nexe, linker, libs) are installed.
  39   void EnsurePnaclInstalled(PP_Instance instance,
  40                             scoped_refptr<ppapi::TrackedCallback> callback);
  41
  42  protected:
  43   virtual ~PnaclTranslationResourceHost();
  44
  45  private:
  46   class CacheRequestInfo {
  47    public:
  48     CacheRequestInfo(PP_Bool* hit,
  49                      PP_FileHandle* handle,
  50                      scoped_refptr<ppapi::TrackedCallback> cb);
  51
  52     ~CacheRequestInfo();
  53
  54     PP_Bool* is_hit;
  55     PP_FileHandle* file_handle;
  56     scoped_refptr<ppapi::TrackedCallback> callback;
  57   };
  58
  59   // Maps the instance with an outstanding cache request to the info
  60   // about that request.
  61   typedef std::map<PP_Instance, CacheRequestInfo> CacheRequestInfoMap;
  62   // A list of outstanding EnsurePnaclInstalled requests.
  63   typedef std::vector<scoped_refptr<ppapi::TrackedCallback> >
  64       EnsurePnaclInstalledList;
  65   // IPC::ChannelProxy::MessageFilter implementation.
  66   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
  67   virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
  68   virtual void OnFilterRemoved() OVERRIDE;
  69   virtual void OnChannelClosing() OVERRIDE;
  70
  71   void SendRequestNexeFd(int render_view_id,
  72                          PP_Instance instance,
  73                          const nacl::PnaclCacheInfo& cache_info,
  74                          PP_Bool* is_hit,
  75                          PP_FileHandle* file_handle,
  76                          scoped_refptr<ppapi::TrackedCallback> callback);
  77   void SendReportTranslationFinished(PP_Instance instance,
  78                                      PP_Bool success);
  79   void SendEnsurePnaclInstalled(PP_Instance instance,
  80                                 scoped_refptr<ppapi::TrackedCallback> callback);
  81
  82   void OnNexeTempFileReply(PP_Instance instance,
  83                            bool is_hit,
  84                            IPC::PlatformFileForTransit file);
  85   void CleanupCacheRequests();
  86   void OnEnsurePnaclInstalledReply(PP_Instance instance, bool success);
  87   void CleanupEnsurePnaclRequests();
  88
  89   scoped_refptr<base::MessageLoopProxy> io_message_loop_;
  90
  91   // Should be accessed on the io thread.
  92   IPC::Channel* channel_;
  93   CacheRequestInfoMap pending_cache_requests_;
  94   EnsurePnaclInstalledList pending_ensure_pnacl_requests_;
  95   DISALLOW_COPY_AND_ASSIGN(PnaclTranslationResourceHost);
  96 };
  97
  98 #endif  // CHROME_RENDERER_PEPPER_PNACL_TRANSLATION_RESOURCE_HOST_H_