mojo/runner/in_process_native_runner.cc

   1 // Copyright 2014 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 #include "mojo/runner/in_process_native_runner.h"
   6
   7 #include "base/bind.h"
   8 #include "base/callback_helpers.h"
   9 #include "base/location.h"
  10 #include "base/thread_task_runner_handle.h"
  11 #include "base/threading/platform_thread.h"
  12 #include "mojo/runner/native_application_support.h"
  13
  14 namespace mojo {
  15 namespace runner {
  16
  17 InProcessNativeRunner::InProcessNativeRunner(Context* context)
  18     : app_library_(nullptr) {}
  19
  20 InProcessNativeRunner::~InProcessNativeRunner() {
  21   // It is important to let the thread exit before unloading the DSO (when
  22   // app_library_ is destructed), because the library may have registered
  23   // thread-local data and destructors to run on thread termination.
  24   if (thread_) {
  25     DCHECK(thread_->HasBeenStarted());
  26     DCHECK(!thread_->HasBeenJoined());
  27     thread_->Join();
  28   }
  29 }
  30
  31 void InProcessNativeRunner::Start(
  32     const base::FilePath& app_path,
  33     bool start_sandboxed,
  34     InterfaceRequest<Application> application_request,
  35     const base::Closure& app_completed_callback) {
  36   app_path_ = app_path;
  37
  38   DCHECK(!application_request_.is_pending());
  39   application_request_ = application_request.Pass();
  40
  41   DCHECK(app_completed_callback_runner_.is_null());
  42   app_completed_callback_runner_ = base::Bind(
  43       &base::TaskRunner::PostTask, base::ThreadTaskRunnerHandle::Get(),
  44       FROM_HERE, app_completed_callback);
  45
  46   DCHECK(!thread_);
  47   thread_.reset(new base::DelegateSimpleThread(this, "app_thread"));
  48   thread_->Start();
  49 }
  50
  51 void InProcessNativeRunner::Run() {
  52   DVLOG(2) << "Loading/running Mojo app in process from library: "
  53            << app_path_.value()
  54            << " thread id=" << base::PlatformThread::CurrentId();
  55
  56   // TODO(vtl): ScopedNativeLibrary doesn't have a .get() method!
  57   base::NativeLibrary app_library = LoadNativeApplication(app_path_);
  58   app_library_.Reset(app_library);
  59   RunNativeApplication(app_library, application_request_.Pass());
  60   app_completed_callback_runner_.Run();
  61   app_completed_callback_runner_.Reset();
  62 }
  63
  64 scoped_ptr<shell::NativeRunner> InProcessNativeRunnerFactory::Create() {
  65   return make_scoped_ptr(new InProcessNativeRunner(context_));
  66 }
  67
  68 }  // namespace runner
  69 }  // namespace mojo