ppapi/native_client/src/trusted/plugin/pnacl_resources.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 NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_RESOURCES_H_
   6 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_RESOURCES_H_
   7
   8 #include <map>
   9 #include <vector>
  10
  11 #include "native_client/src/include/nacl_macros.h"
  12 #include "native_client/src/trusted/desc/nacl_desc_wrapper.h"
  13
  14 #include "ppapi/c/private/ppb_nacl_private.h"
  15 #include "ppapi/cpp/completion_callback.h"
  16
  17 #include "ppapi/native_client/src/trusted/plugin/plugin_error.h"
  18
  19 namespace plugin {
  20
  21 class Plugin;
  22
  23 // Loads a list of resources, providing a way to get file descriptors for
  24 // these resources.  URLs for resources are resolved by the manifest
  25 // and point to pnacl component filesystem resources.
  26 class PnaclResources {
  27  public:
  28   explicit PnaclResources(Plugin* plugin);
  29   virtual ~PnaclResources();
  30
  31   // Read the resource info JSON file.  This is the first step after
  32   // construction; it has to be completed before StartLoad is called.
  33   bool ReadResourceInfo();
  34
  35   // Start loading the resources.
  36   bool StartLoad();
  37
  38   const std::string& GetLlcUrl() { return llc_tool_name_; }
  39   const std::string& GetLdUrl() { return ld_tool_name_; }
  40
  41   PP_NaClFileInfo TakeLlcFileInfo();
  42   PP_NaClFileInfo TakeLdFileInfo();
  43
  44  private:
  45   NACL_DISALLOW_COPY_AND_ASSIGN(PnaclResources);
  46
  47   // The plugin requesting the resource loading.
  48   Plugin* plugin_;
  49
  50   // Tool names for llc and ld; read from the resource info file.
  51   std::string llc_tool_name_;
  52   std::string ld_tool_name_;
  53
  54   // File info for llc and ld executables, after they've been opened.
  55   // Only valid after the callback for StartLoad() has been called, and until
  56   // TakeLlcFileInfo()/TakeLdFileInfo() is called.
  57   PP_NaClFileInfo llc_file_info_;
  58   PP_NaClFileInfo ld_file_info_;
  59 };
  60
  61 }  // namespace plugin
  62 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_RESOURCES_H_