-Go bindings for creating/managing shared buffers between applications

mojo/public/go/system/impl/core_impl.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 impl
 
 //#include "mojo/public/platform/native/system_thunks.h"
 //#include "mojo/public/c/system/main.h"
 import "C"
+import "unsafe"
 
 var core *CoreImpl
 
 func init() {
         core = &CoreImpl{}
 }
 
 // CoreImpl is an implementation of the Mojo system APIs.
 type CoreImpl struct {
 }
@@ skipping 54 matching lines @@
 func (c *CoreImpl) ReadData(consumer MojoHandle, flags MojoReadDataFlags) (MojoResult, []byte) {
         var num_bytes C.uint32_t
         var result C.MojoResult
         if result = C.MojoReadData(consumer.cType(), nil, &num_bytes, C.MOJO_READ_DATA_FLAG_QUERY); result != C.MOJO_RESULT_OK {
                 return (MojoResult)(result), nil
         }
         data := make([]byte, (uint32)(num_bytes))
         result = C.MojoReadData(consumer.cType(), cArrayBytes(data), &num_bytes, flags.cType())
         return (MojoResult)(result), data
 }
+
+func (c *CoreImpl) CreateSharedBuffer(opts *SharedBufferOptions, numBytes uint64) (MojoResult, MojoHandle) {
+        var handle C.MojoHandle
+        result := C.MojoCreateSharedBuffer(opts.cType(), (C.uint64_t)(numBytes), &handle)
+        return (MojoResult)(result), (MojoHandle)(handle)
+}
+
+func (c *CoreImpl) DuplicateBufferHandle(handle MojoHandle, opts *DuplicateBufferHandleOptions) (MojoResult, MojoHandle) {
+        var duplicate C.MojoHandle
+        result := C.MojoDuplicateBufferHandle(handle.cType(), opts.cType(), &duplicate)
+        return (MojoResult)(result), (MojoHandle)(duplicate)
+}
+
+func (c *CoreImpl) MapBuffer(handle MojoHandle, offset uint64, numBytes uint64, flags MojoMapBufferFlags) (MojoResult, unsafe.Pointer) {
+        var bufPtr unsafe.Pointer
+        result := C.MojoMapBuffer(handle.cType(), (C.uint64_t)(offset), (C.uint64_t)(numBytes), &bufPtr, flags.cType())
+        if result != C.MOJO_RESULT_OK {
+                return (MojoResult)(result), nil
+        }
+        return MOJO_RESULT_OK, bufPtr
+}
+
+func (c *CoreImpl) UnmapBuffer(buffer unsafe.Pointer) MojoResult {
+        return (MojoResult)(C.MojoUnmapBuffer(buffer))
+}