[mojo-edk] Add support for transferring mach ports.

mojo/edk/system/core.h

 // Copyright 2013 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.
 
 #ifndef MOJO_EDK_SYSTEM_CORE_H_
 #define MOJO_EDK_SYSTEM_CORE_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory_handle.h"
 #include "base/synchronization/lock.h"
 #include "base/task_runner.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
 #include "mojo/edk/system/dispatcher.h"
 #include "mojo/edk/system/handle_signals_state.h"
 #include "mojo/edk/system/handle_table.h"
 #include "mojo/edk/system/mapping_table.h"
 #include "mojo/edk/system/node_controller.h"
 #include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/c/system/buffer.h"
 #include "mojo/public/c/system/data_pipe.h"
 #include "mojo/public/c/system/message_pipe.h"
 #include "mojo/public/c/system/types.h"
 #include "mojo/public/cpp/system/message_pipe.h"
 
+namespace base {
+class PortProvider;
+}
+
 namespace mojo {
 namespace edk {
 
 // |Core| is an object that implements the Mojo system calls. All public methods
 // are thread-safe.
 class MOJO_SYSTEM_IMPL_EXPORT Core {
  public:
   explicit Core();
   virtual ~Core();
 
@@ skipping 20 matching lines @@
       ScopedPlatformHandle platform_handle);
 
   // Creates a message pipe endpoint associated with |token|, which a child
   // holding the token can later locate and connect to.
   ScopedMessagePipeHandle CreateParentMessagePipe(const std::string& token);
 
   // Creates a message pipe endpoint and connects it to a pipe the parent has
   // associated with |token|.
   ScopedMessagePipeHandle CreateChildMessagePipe(const std::string& token);
 
+  // Sets the mach port provider for this process.
+  void SetMachPortProviderIfNeeded(base::PortProvider* port_provider);
+
   MojoHandle AddDispatcher(scoped_refptr<Dispatcher> dispatcher);
 
   // Adds new dispatchers for non-message-pipe handles received in a message.
   // |dispatchers| and |handles| should be the same size.
   bool AddDispatchersFromTransit(
       const std::vector<Dispatcher::DispatcherInTransit>& dispatchers,
       MojoHandle* handles);
 
   // See "mojo/edk/embedder/embedder.h" for more information on these functions.
   MojoResult CreatePlatformHandleWrapper(ScopedPlatformHandle platform_handle,
@@ skipping 170 matching lines @@
   base::Lock mapping_table_lock_;  // Protects |mapping_table_|.
   MappingTable mapping_table_;
 
   DISALLOW_COPY_AND_ASSIGN(Core);
 };
 
 }  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_CORE_H_