java - Memory allocated to main class executed from servlet? -
i have servlet execute class main method(), can typically start via command line.
in web container tomcat, weblogic server, web container has own defined heap space , number of threads execute request sent web application.
if start class main method() in servlet, memory , threads allocated class?
when invoking method via calling myclass.main() (as stated in comment) not matter method called main - other method-invocation. such
- any memory used during execution allocated on tomcat's heap
- execution in thread processes servlet-request. servlet not continue processing until
main()exits.
the easiest way use storage not tomcat's heap spawn new vm-process via runtime.exec() , run program there. result in quite overhead starting vm can take while.
if ok running in tomcat's vm want execute task in parallel servlet-processing have implement own thread-handling.
