benchmark: Improve event performance tests.

Currently most of the event tests only test a single event type, which might let those benchmark take fast-paths (in V8) that aren't taken in realistic use cases, and thus the benchmarks are not good proxies of real world uses. PR-URL: #14052 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Timothy Gu <[email protected]> Reviewed-By: Michaël Zasso <[email protected]>

Author: bmeurer

benchmark/events/ee-add-remove.js

@@ -16,10 +16,13 @@ function main(conf){
 
 bench.start();
 for(vari=0;i<n;i+=1){
-for(k=listeners.length;--k>=0;/* empty */)
-ee.on('dummy',listeners[k]);
-for(k=listeners.length;--k>=0;/* empty */)
-ee.removeListener('dummy',listeners[k]);
+vardummy=(i%2===0) ? 'dummy0' : 'dummy1';
+for(k=listeners.length;--k>=0;/* empty */){
+ee.on(dummy,listeners[k]);
+}
+for(k=listeners.length;--k>=0;/* empty */){
+ee.removeListener(dummy,listeners[k]);
+}
 }
 bench.end(n);
 }

benchmark/events/ee-listener-count-on-prototype.js

@@ -9,12 +9,15 @@ function main(conf){
 
 varee=newEventEmitter();
 
-for(vark=0;k<10;k+=1)
-ee.on('dummy',function(){});
+for(vark=0;k<5;k+=1){
+ee.on('dummy0',function(){});
+ee.on('dummy1',function(){});
+}
 
 bench.start();
 for(vari=0;i<n;i+=1){
-ee.listenerCount('dummy');
+vardummy=(i%2===0) ? 'dummy0' : 'dummy1';
+ee.listenerCount(dummy);
 }
 bench.end(n);
 }

benchmark/events/ee-listeners-many.js

@@ -10,12 +10,15 @@ function main(conf){
 varee=newEventEmitter();
 ee.setMaxListeners(101);
 
-for(vark=0;k<100;k+=1)
-ee.on('dummy',function(){});
+for(vark=0;k<50;k+=1){
+ee.on('dummy0',function(){});
+ee.on('dummy1',function(){});
+}
 
 bench.start();
 for(vari=0;i<n;i+=1){
-ee.listeners('dummy');
+vardummy=(i%2===0) ? 'dummy0' : 'dummy1';
+ee.listeners(dummy);
 }
 bench.end(n);
 }

benchmark/events/ee-listeners.js

@@ -9,12 +9,15 @@ function main(conf){
 
 varee=newEventEmitter();
 
-for(vark=0;k<10;k+=1)
-ee.on('dummy',function(){});
+for(vark=0;k<5;k+=1){
+ee.on('dummy0',function(){});
+ee.on('dummy1',function(){});
+}
 
 bench.start();
 for(vari=0;i<n;i+=1){
-ee.listeners('dummy');
+vardummy=(i%2===0) ? 'dummy0' : 'dummy1';
+ee.listeners(dummy);
 }
 bench.end(n);
 }

benchmark/events/ee-once.js

@@ -13,8 +13,9 @@ function main(conf){
 
 bench.start();
 for(vari=0;i<n;i+=1){
-ee.once('dummy',listener);
-ee.emit('dummy');
+vardummy=(i%2===0) ? 'dummy0' : 'dummy1';
+ee.once(dummy,listener);
+ee.emit(dummy);
 }
 bench.end(n);
 }