…63e10c that made the documents writer non-concurrent (but threadsafe)

…): The DocumentsWriterThreadPool.Reset() method must be called within the context of a lock because there is a possible race condition with other callers of DocumentsWriterThreadPool.Reset(). See apache#935.

…ntLock.tryLock() method barges to the front of the queue instead of returning false like Monitor.TryEnter(). Use Monitor.Enter(object, ref bool) instead, which always returns true. We get locks in a different order, but I am not sure whether that matters. Fixes apache#935. Closes apache#886.

…at(1000)] to try to reproduce on Azure DevOps (to be reverted).

…readState() method because it has no callers. This simplifies the design of ReentrantLock, since we don't need to artificially keep track of "queued threads".

…ninterruptableMonitor on cascaded methods.

…er test (to be reverted)

… Enter(). Enter() causes deadlocks in other tests, so need to localize this change to DocumentsWriterFlushControl.

…lush(): Use ReentrantLock.Lock() instead of ReentrantLock.TryLock() because Java relies on "barging" behavior instead of returning false when the current thread isn't next in the queue. We cannot do that, but we can wait for the lock to become available instead.

…ryLock() that accepts a timeout (TimeSpan)

…ome time for threads to reach the beginning of the wait queue. In Java, they are automatically put at the beginning of the queue, but since we cannot do that in .NET, we wait a little bit.

…iseconds to wait on whether the current process is 64 or 32 bit.

…liseconds that is used by callers of ReentrantLock.TryLock() to set the default value.

…ng TryDequeue() and TryPeek() methods on netstandard2.0 and .NET Framework

…n to use unfair locking similar to how it was done in Java. We track the queue and use ManualResetEventSlim to control entry into the lock for queued tasks. Ported some of the ReentrantLock tests from Apache Harmony.

…he missing TryDequeue() and TryPeek() methods on netstandard2.0 and .NET Framework"

This reverts commit e5a65e9cd8bbf996fb599ff76e8d6b9f90babe4b.

…leMonitor.TryEnter() instead of UninterruptableMonitor.Enter() so we can control what happens while the thread waits. We simply call Thread.Yield() to allow TryLock() to proceed before any waiting threads. Commented tests that depend on IsLocked because the property was removed.

…n a longer test (to be reverted)"

This reverts commit b30e4abb576c8bfde3337a92de927a10747f88ae.

…ed [Repeat(1000)] to try to reproduce on Azure DevOps (to be reverted)."

This reverts commit d8fca410dafd1bf5529e8200034e1e2e5be83f07.

…itorStateException() Removed unused exception variable and added a comment to indicate success so we don't have to suppress warnings

…nter() recursive methods to avoid overflowing the stack and moved the logic into the catch blocks. Also added documentation.