Non-Blocking mark occurences

[noemus]

I made some changes to 'Mark occurences' task behaviour,

I am aware that these changes are not ideal, but the plugin was nearly unusable without them, every change in editor produced number of backround tasks. and even single task blocked eclipse more than necessary.

I removed synchronized section in KotlinPsiManager, I think that in this case responsivity is primary goal and I have used ConcurrentMaps to synchronize access to cached projects and kotlin files to improve performance, I am using this modified plugin for several months without serious problems and without blocking events like 'Update occurance annotations' background task.

I am not very experienced in opensource projects, so please forgive me if I have done something wrong, I will gladly learn how to do it properly.

https://discuss.kotlinlang.org/t/extremely-poor-performance-of-the-kotlin-plugin-for-eclipse/3397

NOTES: closed original pull request, synced to upstream and resolved conflicts, moved changes to dedicated branch. successfully built and tested.

[jan-zajic]

@zarechenskiy, any news on this, can you merge it?

[zarechenskiy]

Sorry for the long delay, @Kordyjan will review your PR

[Kordyjan]

I have no complaints about changes in code.
After syncing this PR with current master branch and making it compile again I tested it on two machines. It indeed fixed problem with spawning unnecessary tasks and improved responsivness of plugin, especially on the slower machine.
However this change is breaking some minor inspections, like finding excess braces in kotlin files. I still haven't find the reason why. As soon as I fix it i will create new pull request.

[noemus]

Hi, any news? Do you need some help? If you change the base branch to more recent one, I am willing to invest some time to resolve the inspections mentioned by @Kordyjan

[Kordyjan]

@noemus: Sadly we didn't have time and resources to fix it. It is on our to do list all the time, but it is constantly posponed by the things with higher priority. We are grateful for your engagement and help. If you have some time to spare it will definitely help us release it sooner.

[UdoW]

Any progress?

[noemus]

Unfortunately I didn't have time to do anything I even no longer use eclipse so I would need to install it and configure it solely for this purpose. We will see, maybe I will have some spare time around Christmas.