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