https://issues.apache.org/bugzilla/show_bug.cgi?id=19101
--- Comment #5 from Xiaoming Shi <[email protected]> 2011-02-03 14:43:42 EST --- Hi dude, I find that in the latest version of ANT, another place has the same problem ./apache-ant-1.8.2/src/main/org/apache/tools/ant/Main.java line:862 (In reply to comment #0) > In trying to speed up my builds, I ran ant with the -Xprof option to see what > what slow. According to the profiler, an inordinate amount of time was being > spent in Vector.size(). The profiler also showed that > Project.fireMessageLoggedEvent() was chewing up a lot of time, so I started > looking there. > > It turns out a simple optimization sped up my build from 1:45 to 1:30 (about > 15%). The optimization is to pull the call to listeners.size() out of the > loop. > > From this: > > loggingMessage = true; > for (int i = 0; i < listeners.size(); i++) { > BuildListener listener = (BuildListener) > listeners.elementAt(i); > > To this: > > loggingMessage = true; > int size = listeners.size(); > for (int i = 0; i < size; i++) { > BuildListener listener = (BuildListener) > listeners.elementAt(i); > > > It's not a huge speedup (about 15%) but it makes a difference. > > I'm using Ant 1.5.3-1 (compiled from source, obviously) on a 1ghz Powerbook > running OS X 10.2.5 and JDK 1.4.1. My build doesn't have any custom build > listeners, just the default. > > If this fix can't be implemented for some reason, please leave this bug open - > IMHO this is a defect that needs to be fixed. -- Configure bugmail: https://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.
