mojo/shell/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/shell/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/message_loop/message_loop_proxy.h"
  11 #include "base/threading/platform_thread.h"
  12 #include "mojo/shell/native_application_support.h"
  13
  14 namespace mojo {
  15 namespace shell {
  16
  17 InProcessNativeRunner::InProcessNativeRunner(Context* context)
  18     : cleanup_(NativeApplicationCleanup::DONT_DELETE), app_library_(nullptr) {
  19 }
  20
  21 InProcessNativeRunner::~InProcessNativeRunner() {
  22   // It is important to let the thread exit before unloading the DSO (when
  23   // app_library_ is destructed), because the library may have registered
  24   // thread-local data and destructors to run on thread termination.
  25   if (thread_) {
  26     DCHECK(thread_->HasBeenStarted());
  27     DCHECK(!thread_->HasBeenJoined());
  28     thread_->Join();
  29   }
  30 }
  31
  32 void InProcessNativeRunner::Start(
  33     const base::FilePath& app_path,
  34     NativeApplicationCleanup cleanup,
  35     InterfaceRequest<Application> application_request,
  36     const base::Closure& app_completed_callback) {
  37   app_path_ = app_path;
  38   cleanup_ = cleanup;
  39
  40   DCHECK(!application_request_.is_pending());
  41   application_request_ = application_request.Pass();
  42
  43   DCHECK(app_completed_callback_runner_.is_null());
  44   app_completed_callback_runner_ =
  45       base::Bind(&base::TaskRunner::PostTask, base::MessageLoopProxy::current(),
  46                  FROM_HERE, app_completed_callback);
  47
  48   DCHECK(!thread_);
  49   thread_.reset(new base::DelegateSimpleThread(this, "app_thread"));
  50   thread_->Start();
  51 }
  52
  53 void InProcessNativeRunner::Run() {
  54   DVLOG(2) << "Loading/running Mojo app in process from library: "
  55            << app_path_.value()
  56            << " thread id=" << base::PlatformThread::CurrentId();
  57
  58   // TODO(vtl): ScopedNativeLibrary doesn't have a .get() method!
  59   base::NativeLibrary app_library = LoadNativeApplication(app_path_, cleanup_);
  60   app_library_.Reset(app_library);
  61   RunNativeApplication(app_library, application_request_.Pass());
  62   app_completed_callback_runner_.Run();
  63   app_completed_callback_runner_.Reset();
  64 }
  65
  66 scoped_ptr<NativeRunner> InProcessNativeRunnerFactory::Create(
  67     const Options& options) {
  68   return make_scoped_ptr(new InProcessNativeRunner(context_));
  69 }
  70
  71 }  // namespace shell
  72 }  // namespace mojo