src/mojo/shell/out_of_process_dynamic_service_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/out_of_process_dynamic_service_runner.h"
   6
   7 #include "base/bind.h"
   8 #include "base/callback_helpers.h"
   9 #include "base/file_util.h"
  10 #include "base/logging.h"
  11 #include "base/scoped_native_library.h"
  12 #include "mojo/public/cpp/bindings/allocation_scope.h"
  13
  14 namespace mojo {
  15 namespace shell {
  16
  17 OutOfProcessDynamicServiceRunner::OutOfProcessDynamicServiceRunner(
  18     Context* context)
  19     : context_(context) {
  20 }
  21
  22 OutOfProcessDynamicServiceRunner::~OutOfProcessDynamicServiceRunner() {
  23   if (app_child_process_host_) {
  24     // TODO(vtl): Race condition: If |AppChildProcessHost::DidStart()| hasn't
  25     // been called yet, we shouldn't call |Join()| here. (Until |DidStart()|, we
  26     // may not have a child process to wait on.) Probably we should fix
  27     // |Join()|.
  28     app_child_process_host_->Join();
  29   }
  30 }
  31
  32 void OutOfProcessDynamicServiceRunner::Start(
  33     const base::FilePath& app_path,
  34     ScopedMessagePipeHandle service_handle,
  35     const base::Closure& app_completed_callback) {
  36   app_path_ = app_path;
  37
  38   DCHECK(!service_handle_.is_valid());
  39   service_handle_ = service_handle.Pass();
  40
  41   DCHECK(app_completed_callback_.is_null());
  42   app_completed_callback_ = app_completed_callback;
  43
  44   app_child_process_host_.reset(new AppChildProcessHost(context_, this));
  45   app_child_process_host_->Start();
  46
  47   // TODO(vtl): Where should my allocation scope be?
  48   AllocationScope scope;
  49   // TODO(vtl): |app_path.AsUTF8Unsafe()| is unsafe.
  50   app_child_process_host_->controller()->StartApp(
  51       app_path.AsUTF8Unsafe(),
  52       ScopedMessagePipeHandle(MessagePipeHandle(
  53           service_handle.release().value())));
  54 }
  55
  56 void OutOfProcessDynamicServiceRunner::AppCompleted(int32_t result) {
  57   DVLOG(2) << "OutOfProcessDynamicServiceRunner::AppCompleted(" << result
  58            << ")";
  59
  60   app_completed_callback_.Run();
  61   app_completed_callback_.Reset();
  62   app_child_process_host_.reset();
  63 }
  64
  65 }  // namespace shell
  66 }  // namespace mojo