artpar's attempt

[artpar]

Trying to do multiple things at once

• memory mapped files
• parallel processing
• aggressive caching for object creations/parse paths

[gunnarmorling]

Hey @artpar, thanks a lot! Could your rebase this one to latest main and squash everything into a single commit? Right now, I am getting an NPE when running it:

java.lang.NullPointerException: Cannot invoke "java.lang.Double.doubleValue()" because "doubleValue" is null
	at dev.morling.onebrc.CalculateAverage_artpar$ReaderRunnable.run(CalculateAverage_artpar.java:209)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:317)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)

[artpar]

sorry i messed up my git. recreated from scratch
#27