[mojo-edk] Expose portable API for platform handle wrapping

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 <memory>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.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/platform_handle.h"
 #include "mojo/public/c/system/types.h"
 #include "mojo/public/cpp/system/message_pipe.h"
 
 namespace base {
 class PortProvider;
 }
 
 namespace mojo {
 namespace edk {
 
@@ skipping 195 matching lines @@
       MojoHandle buffer_handle,
       const MojoDuplicateBufferHandleOptions* options,
       MojoHandle* new_buffer_handle);
   MojoResult MapBuffer(MojoHandle buffer_handle,
                        uint64_t offset,
                        uint64_t num_bytes,
                        void** buffer,
                        MojoMapBufferFlags flags);
   MojoResult UnmapBuffer(void* buffer);
 
+  // These methods correspond to the API functions defined in
+  // "mojo/public/c/system/platform_handle.h".
+  MojoResult WrapPlatformHandle(const MojoPlatformHandle* platform_handle,
+                                MojoHandle* mojo_handle);
+  MojoResult UnwrapPlatformHandle(MojoHandle mojo_handle,
+                                  MojoPlatformHandle* platform_handle);
+  MojoResult WrapPlatformSharedBufferHandle(
+      const MojoPlatformHandle* platform_handle,
+      size_t size,
+      MojoPlatformSharedBufferHandleFlags flags,
+      MojoHandle* mojo_handle);
+  MojoResult UnwrapPlatformSharedBufferHandle(
+      MojoHandle mojo_handle,
+      MojoPlatformHandle* platform_handle,
+      size_t* size,
+      MojoPlatformSharedBufferHandleFlags* flags);
+
   void GetActiveHandlesForTest(std::vector<MojoHandle>* handles);
 
  private:
   MojoResult WaitManyInternal(const MojoHandle* handles,
                               const MojoHandleSignals* signals,
                               uint32_t num_handles,
                               MojoDeadline deadline,
                               uint32_t *result_index,
                               HandleSignalsState* signals_states);
 
@@ skipping 22 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_