1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 // Module "mojo/public/js/bindings/core"
7 // Note: This file is for documentation purposes only. The code here is not
8 // actually executed. The real module is implemented natively in Mojo.
10 // This module provides the JavaScript bindings for mojo/public/c/system/core.h.
11 // Refer to that file for more detailed documentation for equivalent methods.
16 * MojoHandle: An opaque handles to a Mojo object (e.g. a message pipe).
21 * MojoResult {number}: Result codes for Mojo operations.
22 * See core.h for more information.
27 var RESULT_INVALID_ARGUMENT;
28 var RESULT_DEADLINE_EXCEEDED;
30 var RESULT_ALREADY_EXISTS;
31 var RESULT_PERMISSION_DENIED;
32 var RESULT_RESOURCE_EXHAUSTED;
33 var RESULT_FAILED_PRECONDITION;
35 var RESULT_OUT_OF_RANGE;
36 var RESULT_UNIMPLEMENTED;
38 var RESULT_UNAVAILABLE;
41 var RESULT_SHOULD_WAIT;
44 * MojoDeadline {number}: Used to specify deadlines (timeouts), in microseconds.
45 * See core.h for more information.
47 var DEADLINE_INDEFINITE;
50 * MojoWaitFlags: Used to specify the state of a handle to wait on (e.g., the
51 * ability to read or write to it).
52 * See core.h for more information.
55 var WAIT_FLAG_READABLE;
56 var WAIT_FLAG_WRITABLE;
57 var WAIT_FLAG_EVERYTHING;
60 * MojoWriteMessageFlags: Used to specify different modes to |writeMessage()|.
61 * See core.h for more information.
63 var WRITE_MESSAGE_FLAG_NONE;
66 * MojoReadMessageFlags: Used to specify different modes to |readMessage()|.
67 * See core.h for more information.
69 var READ_MESSAGE_FLAG_NONE;
70 var READ_MESSAGE_FLAG_MAY_DISCARD;
73 * MojoCreateDataPipeOptions: Used to specify creation parameters for a data
74 * pipe to |createDataPipe()|.
75 * See core.h for more information.
77 dictionary MojoCreateDataPipeOptions {
78 MojoCreateDataPipeOptionsFlags flags; // See below.
79 int32 elementNumBytes; // The size of an element, in bytes.
80 int32 capacityNumBytes; // The capacity of the data pipe, in bytes.
83 // MojoCreateDataPipeOptionsFlags
84 var CREATE_DATA_PIPE_OPTIONS_FLAG_NONE;
85 var CREATE_DATA_PIPE_OPTIONS_FLAG_MAY_DISCARD;
88 * MojoWriteDataFlags: Used to specify different modes to |writeData()|.
89 * See core.h for more information.
91 var WRITE_DATA_FLAG_NONE;
92 var WRITE_DATA_FLAG_ALL_OR_NONE;
95 * MojoReadDataFlags: Used to specify different modes to |readData()|.
96 * See core.h for more information.
98 var READ_DATA_FLAG_NONE;
99 var READ_DATA_FLAG_ALL_OR_NONE;
100 var READ_DATA_FLAG_DISCARD;
101 var READ_DATA_FLAG_QUERY;
104 * Closes the given |handle|. See MojoClose for more info.
105 * @param {MojoHandle} Handle to close.
106 * @return {MojoResult} Result code.
108 function close(handle) { [native code] }
111 * Waits on the given handle until the state indicated by |waitFlags| is
112 * satisfied or until |deadline| is passed. See MojoWait for more information.
114 * @param {MojoHandle} handle Handle to wait on.
115 * @param {MojoWaitFlags} waitFlags Specifies the condition to wait for.
116 * @param {MojoDeadline} deadline Stops waiting if this is reached.
117 * @return {MojoResult} Result code.
119 function wait(handle, waitFlags, deadline) { [native code] }
122 * Waits on |handles[0]|, ..., |handles[handles.length-1]| for at least one of
123 * them to satisfy the state indicated by |flags[0]|, ...,
124 * |flags[handles.length-1]|, respectively, or until |deadline| has passed.
125 * See MojoWaitMany for more information.
127 * @param {Array.MojoHandle} handles Handles to wait on.
128 * @param {Array.MojoWaitFlags} waitFlags Specifies the condition to wait for,
129 * for each corresponding handle. Must be the same length as |handles|.
130 * @param {MojoDeadline} deadline Stops waiting if this is reached.
131 * @return {MojoResult} Result code.
133 function waitMany(handles, waitFlags, deadline) { [native code] }
136 * Creates a message pipe. This function always succeeds.
137 * See MojoCreateMessagePipe for more information on message pipes.
139 * @return {MessagePipe} An object of the form {
143 * where |handle0| and |handle1| are MojoHandles to each end of the channel.
145 function createMessagePipe() { [native code] }
148 * Writes a message to the message pipe endpoint given by |handle|. See
149 * MojoWriteMessage for more information, including return codes.
151 * @param {MojoHandle} handle The endpoint to write to.
152 * @param {ArrayBufferView} buffer The message data. May be empty.
153 * @param {Array.MojoHandle} handlesArray Any handles to attach. Handles are
154 * transferred on success and will no longer be valid. May be empty.
155 * @param {MojoWriteMessageFlags} flags Flags.
156 * @return {MojoResult} Result code.
158 function writeMessage(handle, buffer, handlesArray, flags) { [native code] }
161 * Reads a message from the message pipe endpoint given by |handle|. See
162 * MojoReadMessage for more information, including return codes.
164 * @param {MojoHandle} handle The endpoint to read from.
165 * @param {MojoReadMessageFlags} flags Flags.
166 * @return {object} An object of the form {
167 * result, // |RESULT_OK| on success, error code otherwise.
168 * buffer, // An ArrayBufferView of the message data (only on success).
169 * handles // An array of MojoHandles transferred, if any.
172 function readMessage(handle, flags) { [native code] }
175 * Creates a data pipe, which is a unidirectional communication channel for
176 * unframed data, with the given options. See MojoCreateDataPipe for more
177 * more information, including return codes.
179 * @param {MojoCreateDataPipeOptions} optionsDict Options to control the data
180 * pipe parameters. May be null.
181 * @return {object} An object of the form {
182 * result, // |RESULT_OK| on success, error code otherwise.
183 * producerHandle, // MojoHandle to use with writeData (only on success).
184 * consumerHandle, // MojoHandle to use with readData (only on success).
187 function createDataPipe(optionsDict) { [native code] }
190 * Writes the given data to the data pipe producer given by |handle|. See
191 * MojoWriteData for more information, including return codes.
193 * @param {MojoHandle} handle A producerHandle returned by createDataPipe.
194 * @param {ArrayBufferView} buffer The data to write.
195 * @param {MojoWriteDataFlags} flags Flags.
196 * @return {object} An object of the form {
197 * result, // |RESULT_OK| on success, error code otherwise.
198 * numBytes, // The number of bytes written.
201 function writeData(handle, buffer, flags) { [native code] }
204 * Reads data from the data pipe consumer given by |handle|. May also
205 * be used to discard data. See MojoReadData for more information, including
208 * @param {MojoHandle} handle A consumerHandle returned by createDataPipe.
209 * @param {MojoReadDataFlags} flags Flags.
210 * @return {object} An object of the form {
211 * result, // |RESULT_OK| on success, error code otherwise.
212 * buffer, // An ArrayBufferView of the data read (only on success).
215 function readData(handle, flags) { [native code] }