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package gquery.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Document;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.DeferredCommand;
import com.google.gwt.user.client.IncrementalCommand;
import static gquery.client.GQuery.$;
public class GQueryBenchModule implements EntryPoint {
private StringBuffer log = new StringBuffer();
private static final int MIN_TIME = 200;
private static final String GCOMPILED = "gcompiled";
private static final String DOMASSISTANT = "dresult";
private static final String GDYNAMIC = "gresult";
public void onModuleLoad() {
final MySelectors m = GWT.create(MySelectors.class);
final DeferredGQuery dg[] = m.getAllSelectors();
initResultsTable(dg, "Compiled GQuery", GCOMPILED, "DOMAssistant-2.7" /*"DOMAssistant 2.7" */,
DOMASSISTANT, "Dynamic GQuery", GDYNAMIC);
runBenchmarks(dg, new GQueryCompiledBenchmark(),
new DomAssistantBenchmark(), new GQueryDynamicBenchmark());
}
public interface Benchmark {
public int runSelector(DeferredGQuery dq, String selector);
String getId();
}
public void runBenchmarks(final DeferredGQuery[] dg,
final Benchmark... benchmark) {
DeferredCommand.addCommand(new IncrementalCommand() {
int selectorNumber = 0;
int numCalls = 0;
int benchMarkNumber = 0;
double totalTimes[] = new double[benchmark.length];
long cumTime = 0;
int numRuns = 0;
int winner = -1;
double winTime = Double.MAX_VALUE;
public boolean execute() {
if (benchMarkNumber >= benchmark.length) {
benchMarkNumber = 0;
numCalls = 0;
cumTime = 0;
numRuns = 0;
setResultClass(benchmark[winner].getId(), selectorNumber, "win");
for (int i = 0; i < benchmark.length; i++) {
if (i != winner)
setResultClass(benchmark[i].getId(), selectorNumber, "lose");
}
selectorNumber++;
winner = -1;
winTime = Double.MAX_VALUE;
if (selectorNumber >= dg.length) {
double min = Double.MAX_VALUE;
for (int i = 0; i < totalTimes.length; i++) {
if (totalTimes[i] < min) min = totalTimes[i];
}
for (int i = 0; i < totalTimes.length; i++) {
d(benchmark[i].getId(), dg.length, (((int) (totalTimes[i] * 100)) / 100.0) + " ms");
setResultClass(benchmark[i].getId(),
dg.length, totalTimes[i] <= min ? "win" : "lose");
}
return false;
}
}
DeferredGQuery d = dg[selectorNumber];
long start = System.currentTimeMillis();
int num = 0;
long end = start;
Benchmark m = benchmark[benchMarkNumber];
String selector = d.getSelector();
do {
num += m.runSelector(d, selector);
end = System.currentTimeMillis();
numCalls++;
} while (end - start < MIN_TIME);
double runtime = (double) (end - start) / numCalls;
if (runtime < winTime) {
winTime = runtime;
winner = benchMarkNumber;
}
d(m.getId(), selectorNumber, runtime, (num / numCalls));
totalTimes[benchMarkNumber] += runtime;
numCalls = 0;
benchMarkNumber++;
return true;
}
});
}
private void setResultClass(String id, int i, String clz) {
Element td = Document.get().getElementById(id + i);
td.setClassName(clz);
}
private void d(String type, int i, String text) {
Element td = Document.get().getElementById(type + i);
td.setInnerHTML(text);
}
private void d(String type, int i, double v, int i1) {
Element td = Document.get().getElementById(type + i);
td.setInnerHTML(
"" + (((int) (v * 100)) / 100.0) + " ms, found " + i1 + " nodes");
}
private void initResultsTable(DeferredGQuery[] dg, String... options) {
int numRows = dg.length;
Document doc = Document.get();
Element table = doc.getElementById("resultstable");
Element thead = doc.createTHeadElement();
table.appendChild(thead);
Element selectorHeader = doc.createTHElement();
Element theadtr = doc.createTRElement();
selectorHeader.setInnerHTML("Selector");
theadtr.appendChild(selectorHeader);
thead.appendChild(theadtr);
Element tbody = doc.createTBodyElement();
table.appendChild(tbody);
for (int i = 0; i < options.length; i += 2) {
Element th = doc.createTHElement();
th.setInnerHTML(options[i]);
theadtr.appendChild(th);
}
for (int i = 0; i < numRows; i++) {
Element tr = doc.createTRElement();
Element lab = doc.createTHElement();
lab.setInnerHTML(dg[i].getSelector());
tr.appendChild(lab);
for (int j = 0; j < options.length; j += 2) {
Element placeholder = doc.createTDElement();
placeholder.setInnerHTML("Not Tested");
placeholder.setId(options[j + 1] + i);
tr.appendChild(placeholder);
}
tbody.appendChild(tr);
}
Element totalRow = doc.createTRElement();
Element totalLab = doc.createTHElement();
totalLab.setInnerHTML("Total");
totalRow.appendChild(totalLab);
for (int j = 0; j < options.length; j += 2) {
Element placeholder = doc.createTDElement();
placeholder.setInnerHTML("0");
placeholder.setId(options[j + 1] + numRows);
totalRow.appendChild(placeholder);
}
tbody.appendChild(totalRow);
}
private void d(String s) {
log.append(s + "<br>");
}
private static class GQueryCompiledBenchmark implements Benchmark {
public int runSelector(DeferredGQuery dq, String selector) {
return dq.array(null).getLength();
}
public String getId() {
return GCOMPILED;
}
}
private static class DomAssistantBenchmark implements Benchmark {
public native int runSelector(DeferredGQuery dq, String selector) /*-{
return $wnd.$(selector).length;
}-*/;
public String getId() {
return DOMASSISTANT;
}
}
private static class GQueryDynamicBenchmark implements Benchmark {
private SelectorEngine engine;
private GQueryDynamicBenchmark() {
engine = new SelectorEngine();
}
public int runSelector(DeferredGQuery dq, String selector) {
return engine.select(selector, Document.get()).getLength();
}
public String getId() {
return GDYNAMIC;
}
}
}
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