Thread.getState() performance issue with yielding pinned VirtualThread #22322
Description
The need for suspending target thread in order to retrieve thread state causes significant performance bottle neck on virtual thread testing as many tests are written using:
while (vthread.getState() != targetState) {
Thread.yield();
}where the getState() call will prevent virtual thread's transition from completing due to repeated interruption.
#17251 tracks a similar perf bottleneck on platform thread.
Related tests: #22153
Work in progress solution: #21043