Revert of Update mojo sdk to rev e083961bf11fd0c94d40be8853761da529b6d444

mojo/public/go/system/core.go

Index: mojo/public/go/system/core.go
diff --git a/mojo/public/go/system/core.go b/mojo/public/go/system/core.go
index cf6ae99a4b54c1058d88d8e22a0402a7fdf459ef..d8735aeb6ae2e73aeaed5141e2832942b25bda8a 100644
--- a/mojo/public/go/system/core.go
+++ b/mojo/public/go/system/core.go
@@ -4,76 +4,18 @@
 
 package system
 
-import (
-	"unsafe"
+import "mojo/public/go/system/impl"
 
-	t "mojo/public/go/system/impl"
-)
+type Core interface {
+	GetTimeTicksNow() int64
+}
 
-// 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
+var core *impl.CoreImpl
 
-	// Close closes the given handle.
-	Close(handle t.MojoHandle) (result t.MojoResult)
+func init() {
+     core = &impl.CoreImpl{}
+}
 
-	// Wait waits on the given handle until a signal indicated by signals
-	// is satisfied or it becomes known that no signal indicated by
-	// signals will ever be satisified or until deadline has passed.
-	Wait(handle t.MojoHandle, signal t.MojoHandleSignals, deadline t.MojoDeadline) (result t.MojoResult)
-
-	// WaitMany behaves as if Wait were called on each handle/signal pair
-	// simultaneously and completing when the first Wait would complete.
-	WaitMany(handles []t.MojoHandle, signals []t.MojoHandleSignals, deadline t.MojoDeadline) (result t.MojoResult)
-
-	// CreateMessagePipe creates a message pipe which is a bidirectional
-	// communication channel for framed data (i.e., messages). Messages
-	// can contain plain data and/or Mojo handles. On success, it returns
-	// handles to the two endpoints of the message pipe.
-	CreateMessagePipe(opts *t.MessagePipeOptions) (result t.MojoResult, handle0 t.MojoHandle, handle1 t.MojoHandle)
-
-	// WriteMessage writes message data and optional attached handles to
-	// the message pipe endpoint given by handle. On success the attached
-	// handles will no longer be valid (ie: the receiver will receive
-	// equivalent but logically different handles).
-	WriteMessage(handle t.MojoHandle, msg []byte, attached []t.MojoHandle, flags t.MojoWriteMessageFlags) (result t.MojoResult)
-
-	// ReadMessage reads a message from the message pipe endpoint given
-	// by handle with the specified flags. Returns the message data and
-	// attached handles that were received and the number of bytes and
-	// attached handles in the "next" message.
-	ReadMessage(handle t.MojoHandle, flags t.MojoReadMessageFlags) (result t.MojoResult, msg []byte, attached []t.MojoHandle, numBytes uint32, numHandles uint32)
-
-	// CreateDataPipe creates a data pipe which is a unidirectional
-	// communication channel for unframed data. On success, returns a
-	// handle to the producer and consumer of the data pipe.
-	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)
-}
+func GetCore() Core {
+     return core
+}