Mojo EDK: Introduce MojoQueryHandleSignalsState API

mojo/public/js/core.js

 // 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.
 
 // Module "mojo/public/js/core"
 //
 // Note: This file is for documentation purposes only. The code here is not
 // actually executed. The real module is implemented natively in Mojo.
 //
 // This module provides the JavaScript bindings for mojo/public/c/system/core.h.
@@ skipping 124 matching lines @@
 var MAP_BUFFER_FLAG_NONE;
 
 /**
  * Closes the given |handle|. See MojoClose for more info.
  * @param {MojoHandle} Handle to close.
  * @return {MojoResult} Result code.
  */
 function close(handle) { [native code] }
 
 /**
+ * Queries the last known signaling state of |handle|.
+ *
+ * @param {MojoHandle} handle Handle to query.
+ * @return {object} An object of the form {
+ *     result,              // MOJO_RESULT_OK or MOJO_RESULT_INVALID_ARGUMENT
+ *     satisfiedSignals,    // MojoHandleSignals (see above)
+ *     satisfiableSignals,  // MojoHandleSignals
+ * }
+ */
+function queryHandleSignalsState(handle) { [native code] }
+
+/**
  * Waits on the given handle until a signal indicated by |signals| is
  * satisfied or until |deadline| is passed. See MojoWait for more information.
  *
  * @param {MojoHandle} handle Handle to wait on.
  * @param {MojoHandleSignals} signals Specifies the condition to wait for.
  * @param {MojoDeadline} deadline Stops waiting if this is reached.
  * @return {MojoResult} Result code.
  */
 function wait(handle, signals, deadline) { [native code] }
 
@@ skipping 149 matching lines @@
 function mapBuffer(buffer_handle, offset, num_bytes, flags) { [native code] }
 
 /**
  * Unmaps buffer that was mapped using mapBuffer.
  * See MojoUnmapBuffer for more information including error codes.
  *
  * @param {ArrayBuffer} buffer ArrayBuffer.
  * @return {MojoResult} Result code.
  */
 function unmapBuffer(buffer) { [native code] }