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mojo/public/go/system/data_pipe.go

Index: mojo/public/go/system/data_pipe.go
diff --git a/mojo/public/go/system/data_pipe.go b/mojo/public/go/system/data_pipe.go
deleted file mode 100644
index 3f331b2cb427d8816c0fdc7d7d26f9f3497b0a5b..0000000000000000000000000000000000000000
--- a/mojo/public/go/system/data_pipe.go
+++ /dev/null
@@ -1,126 +0,0 @@
-// Copyright 2015 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
-
-// ConsumerHandle is a handle for the consumer part of a data pipe.
-type ConsumerHandle interface {
-	Handle
-
-	// ReadData reads data from the data pipe consumer handle with the
-	// given flags. On success, returns the data that was read.
-	ReadData(flags MojoReadDataFlags) (MojoResult, []byte)
-
-	// BeginReadData begins a two-phase read from the data pipe consumer.
-	// On success, returns a slice from which the caller can read up to its
-	// length bytes of data. The slice length will always be a multiple of 
-	// the element size.
-	//
-	// During a two-phase read, this handle is *not* readable. E.g., read
-	// from this handle will return |MOJO_RESULT_BUSY|.
-	//
-	// Once the caller has finished reading data from the slice, it should
-	// call |EndReadData()| to specify the amount read and to complete the
-	// two-phase read.
-	BeginReadData(flags MojoReadDataFlags) (MojoResult, []byte)
-
-	// EndReadData ends a two-phase read from the data pipe consumer that
-	// was begun by a call to |BeginReadData()| on the same handle.
-	// |numBytesRead| should indicate the amount of data actually read; it
-	// must be less than or equal to the length of the slice returned by
-	// |BeginReadData()| and must be a multiple of the element size.
-	//
-	// On failure, the two-phase read (if any) is ended (so the handle may
-	// become readable again) but no data is "removed" from the data pipe.
-	EndReadData(numBytesRead int) MojoResult
-}
-
-// ProducerHandle is a handle for the producer part of a data pipe.
-type ProducerHandle interface {
-	Handle
-
-	// 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(data []byte, flags MojoWriteDataFlags) (MojoResult, int)
-
-	// BeginWriteData begins a two-phase write to the data pipe producer.
-	// On success, returns a slice to which the caller can write. The slice
-	// length will always be a multiple of the element size.
-	//
-	// During a two-phase write, this handle is *not* writable. E.g., write
-	// to this handle will return |MOJO_RESULT_BUSY|.
-	//
-	// Once the caller has finished writing data to the buffer, it should
-	// call |EndWriteData()| to specify the amount written and to complete
-	// the two-phase write.
-	BeginWriteData(flags MojoWriteDataFlags) (MojoResult, []byte)
-
-	// EndWriteData ends a two-phase write to the data pipe producer that
-	// was begun by a call to |BeginWriteData()| on the same handle.
-	// |numBytesWritten| should indicate the amount of data actually
-	// written; it must be less than or equal to the length of the slice
-	// returned by |BeginWriteData()| and must be a multiple of the element
-	// size. The slice returned from |BeginWriteData()| must have been
-	// filled with exactly |numBytesWritten| bytes of data.
-	//
-	// On failure, the two-phase write (if any) is ended (so the handle may
-	// become writable again, if there's space available) but no data
-	// written to the slice is "put into" the data pipe.
-	EndWriteData(numBytesWritten int) MojoResult
-}
-
-type dataPipeConsumer struct {
-	// baseHandle should always be the first component of this struct,
-	// see |finalizeHandle()| for more details.
-	baseHandle
-}
-
-func (h *dataPipeConsumer) ReadData(flags MojoReadDataFlags) (MojoResult, []byte) {
-	h.core.mu.Lock()
-	r, buf := sysImpl.ReadData(uint32(h.mojoHandle), uint32(flags))
-	h.core.mu.Unlock()
-	return MojoResult(r), buf
-}
-
-func (h *dataPipeConsumer) BeginReadData(flags MojoReadDataFlags) (MojoResult, []byte) {
-	h.core.mu.Lock()
-	r, buf := sysImpl.BeginReadData(uint32(h.mojoHandle), uint32(flags))
-	h.core.mu.Unlock()
-	return MojoResult(r), buf
-}
-
-func (h *dataPipeConsumer) EndReadData(numBytesRead int) MojoResult {
-	h.core.mu.Lock()
-	r := sysImpl.EndReadData(uint32(h.mojoHandle), uint32(numBytesRead))
-	h.core.mu.Unlock()
-	return MojoResult(r)
-}
-
-type dataPipeProducer struct {
-	// baseHandle should always be the first component of this struct,
-	// see |finalizeHandle()| for more details.
-	baseHandle
-}
-
-func (h *dataPipeProducer) WriteData(data []byte, flags MojoWriteDataFlags) (MojoResult, int) {
-	h.core.mu.Lock()
-	r, bytesWritten := sysImpl.WriteData(uint32(h.mojoHandle), data, uint32(flags))
-	h.core.mu.Unlock()
-	return MojoResult(r), int(bytesWritten)
-}
-
-func (h *dataPipeProducer) BeginWriteData(flags MojoWriteDataFlags) (MojoResult, []byte) {
-	h.core.mu.Lock()
-	r, buf := sysImpl.BeginWriteData(uint32(h.mojoHandle), uint32(flags))
-	h.core.mu.Unlock()
-	return MojoResult(r), buf
-}
-
-func (h *dataPipeProducer) EndWriteData(numBytesWritten int) MojoResult {
-	h.core.mu.Lock()
-	r := sysImpl.EndWriteData(uint32(h.mojoHandle), uint32(numBytesWritten))
-	h.core.mu.Unlock()
-	return MojoResult(r)
-}