Add mach ports support to the Mojo shell.

mojo/shell/runner/host/child_process_host.cc

 // Copyright 2014 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.
 
 #include "mojo/shell/runner/host/child_process_host.h"
 
 #include <stdint.h>
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/process/kill.h"
 #include "base/process/launch.h"
+#include "base/synchronization/lock.h"
 #include "base/task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "mojo/public/cpp/bindings/interface_ptr_info.h"
 #include "mojo/public/cpp/system/core.h"
 #include "mojo/shell/native_runner_delegate.h"
 #include "mojo/shell/runner/common/client_util.h"
 #include "mojo/shell/runner/common/switches.h"
 
 #if defined(OS_LINUX) && !defined(OS_ANDROID)
 #include "sandbox/linux/services/namespace_sandbox.h"
 #endif
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #endif
 
+#if defined(OS_MACOSX)
+#include "mojo/shell/runner/host/mach_broker.h"
+#endif
+
 namespace mojo {
 namespace shell {
 
 ChildProcessHost::ChildProcessHost(base::TaskRunner* launch_process_runner,
                                    NativeRunnerDelegate* delegate,
                                    bool start_sandboxed,
                                    const Identity& target,
                                    const base::FilePath& app_path)
     : launch_process_runner_(launch_process_runner),
       delegate_(delegate),
@@ skipping 126 matching lines @@
 #if defined(OS_LINUX) && !defined(OS_ANDROID)
   if (start_sandboxed_) {
     child_process_ =
         sandbox::NamespaceSandbox::LaunchProcess(*child_command_line, options);
     if (!child_process_.IsValid()) {
       LOG(ERROR) << "Starting the process with a sandbox failed. Missing kernel"
                  << " support.";
     }
   } else
 #endif
+  {
+#if defined(OS_MACOSX)
+    MachBroker* mach_broker = MachBroker::GetInstance();
+    base::AutoLock locker(mach_broker->GetLock());
+#endif
     child_process_ = base::LaunchProcess(*child_command_line, options);
+#if defined(OS_MACOSX)
+    mach_broker->ExpectPid(child_process_.Handle());
+#endif
+  }
 
   if (child_process_.IsValid()) {
     if (mojo_ipc_channel_.get()) {
       mojo_ipc_channel_->ChildProcessLaunched();
       mojo::edk::ChildProcessLaunched(
           child_process_.Handle(),
           mojo::edk::ScopedPlatformHandle(mojo::edk::PlatformHandle(
               mojo_ipc_channel_->PassServerHandle().release().handle)));
     }
   }
   start_child_process_event_.Signal();
 }
 
 }  // namespace shell
 }  // namespace mojo