-Go bindings for creating/managing shared buffers between applications

mojo/public/go/system/core.go

 // 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.
 
 package system
 
 import (
+        "unsafe"
+
         t "mojo/public/go/system/impl"
 )
 
 // Core is an interface that defines the set of Mojo system APIs.
 type Core interface {
         // GetTimeTicksNow returns a monotonically increasing platform
         // dependent tick count representing "right now". Resolution
         // depends on the systemconfiguration.
         GetTimeTicksNow() t.MojoTimeTicks
 
@@ skipping 33 matching lines @@
         CreateDataPipe(opts *t.DataPipeOptions) (result t.MojoResult, producer t.MojoHandle, consumer t.MojoHandle)
 
         // WriteData writes data to the data pipe producer handle with the
         // given flags. On success, returns the number of bytes that were
         // actually written.
         WriteData(producer t.MojoHandle, data []byte, flags t.MojoWriteDataFlags) (result t.MojoResult, numBytes uint32)
 
         // ReadData reads data from the data pipe consumer handle with the
         // given flags. On success, returns the data that was read.
         ReadData(consumer t.MojoHandle, flags t.MojoReadDataFlags) (result t.MojoResult, data []byte)
+
+        // CreateSharedBuffer creates a buffer of size numBytes that can be
+        // shared between applications. One must call MapBuffer to access
+        // the buffer.
+        CreateSharedBuffer(opts *t.SharedBufferOptions, numBytes uint64) (result t.MojoResult, handle t.MojoHandle)
+
+        // DuplicateBufferHandle duplicates the handle to a buffer.
+        DuplicateBufferHandle(handle t.MojoHandle, opts *t.DuplicateBufferHandleOptions) (result t.MojoResult, duplicate t.MojoHandle)
+
+        // MapBuffer maps the requested part of the shared buffer given by
+        // handle into memory with specified flags. On success, it returns
+        // a pointer to the requested shared buffer.
+        MapBuffer(handle t.MojoHandle, offset uint64, numBytes uint64, flags t.MojoMapBufferFlags) (result t.MojoResult, buffer unsafe.Pointer)
+
+        // UnmapBuffer unmaps a buffer pointer that was returned by MapBuffer.
+        UnmapBuffer(buffer unsafe.Pointer) (result t.MojoResult)
 }