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     : cleanup_(shell::NativeApplicationCleanup::DONT_DELETE),
  19       app_library_(nullptr) {
  20 }
  21
  22 InProcessNativeRunner::~InProcessNativeRunner() {
  23   // It is important to let the thread exit before unloading the DSO (when
  24   // app_library_ is destructed), because the library may have registered
  25   // thread-local data and destructors to run on thread termination.
  26   if (thread_) {
  27     DCHECK(thread_->HasBeenStarted());
  28     DCHECK(!thread_->HasBeenJoined());
  29     thread_->Join();
  30   }
  31 }
  32
  33 void InProcessNativeRunner::Start(
  34     const base::FilePath& app_path,
  35     shell::NativeApplicationCleanup cleanup,
  36     InterfaceRequest<Application> application_request,
  37     const base::Closure& app_completed_callback) {
  38   app_path_ = app_path;
  39   cleanup_ = cleanup;
  40
  41   DCHECK(!application_request_.is_pending());
  42   application_request_ = application_request.Pass();
  43
  44   DCHECK(app_completed_callback_runner_.is_null());
  45   app_completed_callback_runner_ = base::Bind(
  46       &base::TaskRunner::PostTask, base::ThreadTaskRunnerHandle::Get(),
  47       FROM_HERE, app_completed_callback);
  48
  49   DCHECK(!thread_);
  50   thread_.reset(new base::DelegateSimpleThread(this, "app_thread"));
  51   thread_->Start();
  52 }
  53
  54 void InProcessNativeRunner::Run() {
  55   DVLOG(2) << "Loading/running Mojo app in process from library: "
  56            << app_path_.value()
  57            << " thread id=" << base::PlatformThread::CurrentId();
  58
  59   // TODO(vtl): ScopedNativeLibrary doesn't have a .get() method!
  60   base::NativeLibrary app_library = LoadNativeApplication(app_path_, cleanup_);
  61   app_library_.Reset(app_library);
  62   RunNativeApplication(app_library, application_request_.Pass());
  63   app_completed_callback_runner_.Run();
  64   app_completed_callback_runner_.Reset();
  65 }
  66
  67 scoped_ptr<shell::NativeRunner> InProcessNativeRunnerFactory::Create(
  68     const Options& options) {
  69   return make_scoped_ptr(new InProcessNativeRunner(context_));
  70 }
  71
  72 }  // namespace runner
  73 }  // namespace mojo