Pepper: Make StartSelLdr asynchronous.

ppapi/native_client/src/trusted/plugin/service_runtime.h

 /* -*- c++ -*- */
 /*
  * Copyright (c) 2012 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.
  */
 
 // A class containing information regarding a socket connection to a
 // service runtime instance.
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_SERVICE_RUNTIME_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_SERVICE_RUNTIME_H_
 
 #include <set>
 
 #include "native_client/src/include/nacl_macros.h"
 #include "native_client/src/include/nacl_scoped_ptr.h"
 #include "native_client/src/include/nacl_string.h"
 #include "native_client/src/shared/platform/nacl_sync.h"
 #include "native_client/src/shared/srpc/nacl_srpc.h"
 #include "native_client/src/trusted/desc/nacl_desc_wrapper.h"
 #include "native_client/src/trusted/nonnacl_util/sel_ldr_launcher.h"
 #include "native_client/src/trusted/reverse_service/reverse_service.h"
 #include "native_client/src/trusted/weak_ref/weak_ref.h"
 
 #include "ppapi/cpp/completion_callback.h"
-
 #include "ppapi/native_client/src/trusted/plugin/utility.h"
+#include "ppapi/utility/completion_callback_factory.h"
 
 struct NaClFileInfo;
 
 namespace nacl {
 class DescWrapper;
 }  // namespace
 
 namespace pp {
 class FileIO;
 }  // namespace
@@ skipping 183 matching lines @@
   // TODO(sehr): This class should also implement factory methods, using the
   // Start method below.
   ServiceRuntime(Plugin* plugin,
                  const Manifest* manifest,
                  bool should_report_uma,
                  pp::CompletionCallback init_done_cb,
                  pp::CompletionCallback crash_cb);
   // The destructor terminates the sel_ldr process.
   ~ServiceRuntime();
 
-  // Spawn the sel_ldr instance. On success, returns true.
-  // On failure, returns false and |error_string| is set to something
-  // describing the error.
-  bool StartSelLdr(const SelLdrStartParams& params);
+  // Spawn the sel_ldr instance.
+  void StartSelLdr(const SelLdrStartParams& params,
+                   pp::CompletionCallback callback);
 
   // If starting sel_ldr from a background thread, wait for sel_ldr to
   // actually start.
   void WaitForSelLdrStart();
 
   // Signal to waiting threads that StartSelLdr is complete.
   // Done externally, in case external users want to write to shared
   // memory that is yet to be fenced.
   void SignalStartSelLdrDone();
 
@@ skipping 21 matching lines @@
 
   // To establish quota callbacks the pnacl coordinator needs to communicate
   // with the reverse interface.
   PluginReverseInterface* rev_interface() const { return rev_interface_; }
 
  private:
   NACL_DISALLOW_COPY_AND_ASSIGN(ServiceRuntime);
   bool LoadModule(nacl::DescWrapper* shm, ErrorInfo* error_info);
   bool InitReverseService(ErrorInfo* error_info);
   bool StartModule(ErrorInfo* error_info);
+  void StartSelLdrContinuation(int32_t pp_error,
+                               PP_CompletionCallback callback);
+
 
   NaClSrpcChannel command_channel_;
   Plugin* plugin_;
   bool main_service_runtime_;
   nacl::ReverseService* reverse_service_;
   nacl::scoped_ptr<nacl::SelLdrLauncherBase> subprocess_;
 
   nacl::WeakRefAnchor* anchor_;
 
   PluginReverseInterface* rev_interface_;
 
   // Mutex to protect exit_status_.
   // Also, in conjunction with cond_ it is used to signal when
   // StartSelLdr is complete with either success or error.
   NaClMutex mu_;
   NaClCondVar cond_;
   int exit_status_;
   bool start_sel_ldr_done_;
+
+  PP_Var start_sel_ldr_error_message_;
+  pp::CompletionCallbackFactory<ServiceRuntime> callback_factory_;
 };
 
 }  // namespace plugin
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_SERVICE_RUNTIME_H_