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Bug 899885 - 1/2: B2G RIL - Callback-based worker messaging. Add WorkerMessenger. r=yoshi
This commit is contained in:
Vicamo Yang
parent
a1880d0c00
commit
6c2198d1fe
@ -256,7 +256,6 @@ XPCOMUtils.defineLazyGetter(this, "gMessageManager", function () {
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ril: null,
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targetsByRequestId: {},
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// Manage message targets in terms of topic. Only the authorized and
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// registered contents can receive related messages.
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targetsByTopic: {},
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@ -544,27 +543,6 @@ XPCOMUtils.defineLazyGetter(this, "gMessageManager", function () {
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clientId: clientId,
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data: data
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});
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},
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saveRequestTarget: function saveRequestTarget(msg) {
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let requestId = msg.json.data.requestId;
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if (!requestId) {
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// The content is not interested in a response;
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return;
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}
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this.targetsByRequestId[requestId] = msg.target;
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},
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sendRequestResults: function sendRequestResults(requestType, options) {
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let target = this.targetsByRequestId[options.requestId];
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delete this.targetsByRequestId[options.requestId];
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if (!target) {
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return;
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}
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target.sendAsyncMessage(requestType, options);
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}
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};
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});
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@ -631,8 +609,135 @@ XPCOMUtils.defineLazyGetter(RadioInterfaceLayer.prototype,
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}
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});
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function WorkerMessenger(radioInterface, options) {
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// Initial owning attributes.
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this.radioInterface = radioInterface;
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this.tokenCallbackMap = {};
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// Add a convenient alias to |radioInterface.debug()|.
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this.debug = radioInterface.debug.bind(radioInterface);
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if (DEBUG) this.debug("Starting RIL Worker[" + options.clientId + "]");
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this.worker = new ChromeWorker("resource://gre/modules/ril_worker.js");
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this.worker.onerror = this.onerror.bind(this);
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this.worker.onmessage = this.onmessage.bind(this);
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this.send("setInitialOptions", options);
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gSystemWorkerManager.registerRilWorker(options.clientId, this.worker);
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}
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WorkerMessenger.prototype = {
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radioInterface: null,
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worker: null,
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// This gets incremented each time we send out a message.
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token: 1,
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// Maps tokens we send out with messages to the message callback.
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tokenCallbackMap: null,
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onerror: function onerror(event) {
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if (DEBUG) {
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this.debug("Got an error: " + event.filename + ":" +
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event.lineno + ": " + event.message + "\n");
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}
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event.preventDefault();
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},
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/**
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* Process the incoming message from the RIL worker.
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*/
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onmessage: function onmessage(event) {
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let message = event.data;
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if (DEBUG) {
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this.debug("Received message from worker: " + JSON.stringify(message));
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}
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let token = message.rilMessageToken;
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if (token == null) {
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// That's an unsolicited message. Pass to RadioInterface directly.
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this.radioInterface.handleUnsolicitedWorkerMessage(message);
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return;
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}
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let callback = this.tokenCallbackMap[message.rilMessageToken];
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if (!callback) {
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if (DEBUG) this.debug("Ignore orphan token: " + message.rilMessageToken);
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return;
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}
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let keep = false;
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try {
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keep = callback(message);
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} catch(e) {
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if (DEBUG) this.debug("callback throws an exception: " + e);
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}
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if (!keep) {
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delete this.tokenCallbackMap[message.rilMessageToken];
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}
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},
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/**
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* Send arbitrary message to worker.
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*
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* @param rilMessageType
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* A text message type.
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* @param message [optional]
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* An optional message object to send.
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* @param callback [optional]
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* An optional callback function which is called when worker replies
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* with an message containing a 'rilMessageToken' attribute of the
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* same value we passed. This callback function accepts only one
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* parameter -- the reply from worker. It also returns a boolean
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* value true to keep current token-callback mapping and wait for
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* another worker reply, or false to remove the mapping.
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*/
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send: function send(rilMessageType, message, callback) {
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message = message || {};
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message.rilMessageToken = this.token;
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this.token++;
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if (callback) {
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// Only create the map if callback is provided. For sending a request
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// and intentionally leaving the callback undefined, that reply will
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// be dropped in |this.onmessage| because of that orphan token.
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//
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// For sending a request that never replied at all, we're fine with this
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// because no callback shall be passed and we leave nothing to be cleaned
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// up later.
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this.tokenCallbackMap[message.rilMessageToken] = callback;
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}
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message.rilMessageType = rilMessageType;
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this.worker.postMessage(message);
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},
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/**
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* Send message to worker and return worker reply to RILContentHelper.
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*
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* @param msg
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* A message object from ppmm.
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* @param rilMessageType
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* A text string for worker message type.
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* @param ipcType [optinal]
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* A text string for ipc message type. 'msg.name' if omitted.
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*
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* @TODO: Bug 815526 - deprecate RILContentHelper.
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*/
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sendWithIPCMessage: function sendWithIPCMessage(msg, rilMessageType, ipcType) {
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this.send(rilMessageType, msg.json.data, function(reply) {
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ipcType = ipcType || msg.name;
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msg.target.sendAsyncMessage(ipcType, reply);
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return false;
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});
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}
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};
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function RadioInterface(options) {
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this.clientId = options.clientId;
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this.workerMessenger = new WorkerMessenger(this, options);
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this.dataCallSettings = {
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oldEnabled: false,
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@ -649,15 +754,6 @@ function RadioInterface(options) {
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byAPN: {}
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};
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if (DEBUG) this.debug("Starting RIL Worker[" + this.clientId + "]");
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this.worker = new ChromeWorker("resource://gre/modules/ril_worker.js");
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this.worker.onerror = this.onerror.bind(this);
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this.worker.onmessage = this.onmessage.bind(this);
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// Pass initial options to ril_worker.
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options.rilMessageType = "setInitialOptions";
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this.worker.postMessage(options);
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this.rilContext = {
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radioState: RIL.GECKO_RADIOSTATE_UNAVAILABLE,
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cardState: RIL.GECKO_CARDSTATE_UNKNOWN,
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@ -730,8 +826,6 @@ function RadioInterface(options) {
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this.portAddressedSmsApps = {};
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this.portAddressedSmsApps[WAP.WDP_PORT_PUSH] = this.handleSmsWdpPortPush.bind(this);
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gSystemWorkerManager.registerRilWorker(this.clientId, this.worker);
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}
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RadioInterface.prototype = {
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@ -744,6 +838,9 @@ RadioInterface.prototype = {
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Ci.nsIObserver,
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Ci.nsISettingsServiceCallback]),
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// A private WorkerMessenger instance.
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workerMessenger: null,
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debug: function debug(s) {
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dump("-*- RadioInterface[" + this.clientId + "]: " + s + "\n");
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},
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@ -926,26 +1023,7 @@ RadioInterface.prototype = {
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}
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},
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onerror: function onerror(event) {
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if (DEBUG) {
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this.debug("Got an error: " + event.filename + ":" +
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event.lineno + ": " + event.message + "\n");
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}
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event.preventDefault();
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},
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/**
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* Process the incoming message from the RIL worker. This roughly
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* works as follows:
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* (1) Update local state.
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* (2) Update state in related systems such as the audio.
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* (3) Multiplex the message to callbacks / listeners (typically the DOM).
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*/
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onmessage: function onmessage(event) {
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let message = event.data;
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if (DEBUG) {
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this.debug("Received message from worker: " + JSON.stringify(message));
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}
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handleUnsolicitedWorkerMessage: function handleUnsolicitedWorkerMessage(message) {
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switch (message.rilMessageType) {
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case "callRing":
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this.handleCallRing();
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@ -2591,10 +2669,6 @@ RadioInterface.prototype = {
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};
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},
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// nsIRadioWorker
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worker: null,
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// nsIRadioInterface
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setRadioEnabled: function setRadioEnabled(value) {
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