how to handle automatically synchronized blocks

[Cristian Lorenzetto]

I have a project with many synchronized blocks using fibers and threads .
I was studing a way to solve this problem with fibers. Synchronized blocks
now works just with threads. I found a solution but is a bit complex and
long for a single developer.
Essentially using instrumentation i change bytecode replacing the old
synchonized block instruction with a block working also with fibers.
No one developed a similr solution?