158 lines
3.5 KiB
JavaScript
158 lines
3.5 KiB
JavaScript
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mDispatch = {
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log: function()
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{
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// console.log.apply(console, arguments);
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},
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mode: 'sync',
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onCalculateEventEnd : null,
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onCalculateEventBegin : null,
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asyncCallbacks: {},
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asyncCallbackId: 0,
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numAsyncCalculations:0,
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handleResponse: function(data)
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{
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mDispatch.numAsyncCalculations--;
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if (window.onCalculateEventEnd)
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window.onCalculateEventEnd(mDispatch.numAsyncCalculations);
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var callback = mDispatch.asyncCallbacks[data.callback];
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delete mDispatch.asyncCallbacks[data.callback];
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mDispatch.log("onmessage ",data.callback,data.original.cmd);
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if (callback)
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if (data.exception)
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callback.invoke(new Error(data.exception));
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else
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callback.invoke(data.result);
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},
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onWorkerResponse: function(message)
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{
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var data = message.data;
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if (data.original.cmd == 'ping')
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{
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if (mDispatch.mode != 'native')
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{
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mDispatch.log("ping received switching to worker mode");
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mDispatch.mode = 'worker';
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}
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}
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else
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{
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mDispatch.handleResponse(data);
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}
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},
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dispatch: function(cmd, a, force)
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{
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mDispatch.numAsyncCalculations++;
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if (window.onCalculateEventBegin)
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window.onCalculateEventBegin(mDispatch.numAsyncCalculations);
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var callback = a[0];
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var args = Array.prototype.slice.call(a,1);
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force = (force == undefined) ? false : force;
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var mode = mDispatch.mode;
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if (mode == 'worker' && startsWith(cmd,'srp'))
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mode = 'async';
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if (mode == 'sync')
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{
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try
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{
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mDispatch.log("sync",cmd);
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var result = mSupport[cmd].apply(null, args);
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callback.invoke(result);
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}
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catch (exception)
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{
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if (cmd != 'ping')
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if (callback)
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callback.invoke(exception);
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}
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mDispatch.numAsyncCalculations--;
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if (window.onCalculateEventEnd)
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window.onCalculateEventEnd(mDispatch.numAsyncCalculations);
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}
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else
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if (mode == 'async')
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{
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var callbackId = mDispatch.asyncCallbackId++;
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mDispatch.asyncCallbacks[callbackId] = callback;
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setTimeout(
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function(){
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var request = {cmd:cmd, args:args, callback:callbackId};
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var response = {original:request, callback:callbackId};
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try
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{
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response.result = mSupport[cmd].apply(null,args);
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}
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catch (exception)
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{
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response.exception = exception;
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}
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mDispatch.handleResponse(response);
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},
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0
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);
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}
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else
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if (mode == 'worker')
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{
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var callbackId = mDispatch.asyncCallbackId++;
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mDispatch.asyncCallbacks[callbackId] = callback;
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mDispatch.log("worker ",callbackId, cmd);
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mDispatch.worker.postMessage({cmd:cmd, args:args, callback:callbackId});
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}
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else
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if (mode == 'native')
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{
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var callbackId = mDispatch.asyncCallbackId++;
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mDispatch.asyncCallbacks[callbackId] = callback;
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mDispatch.log("native",callbackId, cmd);
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mNative.sendRequest({cmd:cmd, args:args, callback:callbackId})
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}
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},
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startWorker: function()
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{
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if (mDispatch.mode != 'native')
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{
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mDispatch.log("starting worker");
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mDispatch.mode = 'worker';
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mDispatch.worker = new Worker('js/mWorker.js');
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mDispatch.worker.onmessage = mDispatch.onWorkerResponse;
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mDispatch.worker.postMessage({cmd:'ping', args:[], callback:-1});
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}
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},
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startNative: function()
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{
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if (mDispatch.mode == 'worker')
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{
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mDispatch.worker.postMessage({cmd:'shutdown'});
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}
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mDispatch.mode = 'native';
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mNative.onResponse = mDispatch.handleResponse;
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mNative.sendRequest({cmd:'cout',args:["starting native"], callback:-1});
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},
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};
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// $(document).ready(setTimeout(function() { mDispatch.startWorker(); }, 250));
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