java - How to get rid of "Method parameters should be @State classes" in JMH when parameters come from another method? -


i'm working on maven project. scenario below...

class test {      public void applyall() {         ....................         ....................         collection<migratable> applicableupdates = someotherclass.getapplicableupdates();         doupdate(applicableupdates);      }      @benchmark     public void apply(migratable m) {         ....................         ....................     }      private void doupdate(collection<migratable> applicableupdates) throws exception {         (migratable m : applicableupdates) {             try {                  apply(m);              } catch (exception e) {                 logger.error("falid apply migration {}" + m, e);                 throw e;             }         }     } }

i need compute how long takes execute each migration. need compute execution time of apply(migratable m) method.
now, when build project using "mvn clean install", build failed , shows "method parameters should @state classes".

here, parameter comes method doupdate(collection applicableupdates) [see scenario]. how can rid of error in given scenario?

there quite few problems in setup here , seems haven't looked @ samples of jmh; , advise that.

a few notes...

1) @benchmark method returns void - should return something; otherwise use blackholes (this in samples).

2) if parameters comes another method means method should @setup method (this in samples)

3) error seeing has fact migratable not @state class (this again in samples!)

at point can't stress enough - , understand samples. it's not going easy, micro-benchmark , as jmh tries make things easier hiding very complicated code, still requires convey rules exist there.


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