// Writers block both readers and writers - wait for all other readers and writers to finish
public QuietWriterLock(RWLockInfo info, bool?active = null)
{
_info = info;
if (active.GetValueOrDefault(Globals.UseReaderWriterLocks))
{
try
{
Thread.BeginCriticalRegion();
if (_info.Lock.TryEnterWriteLock(0))
{
Interlocked.Increment(ref _active);
#if LOCK_TRACE
_info.LastWriter = Environment.CurrentManagedThreadId;
#endif
}
}
finally
{
Thread.EndCriticalRegion();
}
}
}
public ReaderLock(RWLockInfo info, bool?active = null)
{
_info = info;
if (active.GetValueOrDefault(Globals.UseReaderWriterLocks && (!Globals.AllowDirtyReads || !info.AllowDirtyReads)))
{
try
{
#if LOCK_TRACE
RWLockInfo.Waits++;
long start = DateTime.Now.Ticks;
#endif
Thread.BeginCriticalRegion();
if (!_info.Lock.TryEnterReadLock(_info.Timeout))
{
#if LOCK_TRACE
RWLockInfo.WaitDuration += DateTime.Now.Ticks - start;
#endif
throw new TimeoutException("Failed to obtain a read lock in timeout interval.");
}
Interlocked.Increment(ref _active);
#if LOCK_TRACE
_info.LastReader = Environment.CurrentManagedThreadId;
RWLockInfo.WaitDuration += DateTime.Now.Ticks - start;
#endif
}
finally
{
Thread.EndCriticalRegion();
}
}
}
// Writers block both readers and writers - wait for all other readers and writers to finish
public WriterLock(RWLockInfo info, bool?active = null)
{
if (info != null)
{
_info = info;
Reacquire(active);
}
}
