public ReaderWriterCount(bool fIsReentrant)
{
if (fIsReentrant)
{
this.rc = new RecursiveCounts();
}
}
public ReaderWriterCount(bool fIsReentrant)
{
if (fIsReentrant)
{
this.rc = new RecursiveCounts();
}
}
public ReaderWriterCount(bool fIsReentrant)
{
threadid = -1;
if (fIsReentrant)
{
rc = new RecursiveCounts();
}
}
public void ExitWriteLock()
{
int id = Thread.CurrentThread.ManagedThreadId;
ReaderWriterCount lrwc;
if (!fIsReentrant)
{
if (id != writeLockOwnerId)
{
//You have to be holding the write lock to make this call.
throw new SynchronizationLockException(SR.GetString(SR.SynchronizationLockException_MisMatchedWrite));
}
EnterMyLock();
}
else
{
EnterMyLock();
lrwc = GetThreadRWCount(id, false);
if (lrwc == null)
{
ExitMyLock();
throw new SynchronizationLockException(SR.GetString(SR.SynchronizationLockException_MisMatchedWrite));
}
RecursiveCounts rc = lrwc.rc;
if (rc.writercount < 1)
{
ExitMyLock();
throw new SynchronizationLockException(SR.GetString(SR.SynchronizationLockException_MisMatchedWrite));
}
rc.writercount--;
if (rc.writercount > 0)
{
ExitMyLock();
Thread.EndCriticalRegion();
return;
}
}
Debug.Assert((owners & WRITER_HELD) > 0, "Calling ReleaseWriterLock when no write lock is held");
ClearWriterAcquired();
writeLockOwnerId = -1;
ExitAndWakeUpAppropriateWaiters();
Thread.EndCriticalRegion();
}
public void ExitUpgradeableReadLock()
{
int id = Thread.CurrentThread.ManagedThreadId;
ReaderWriterCount lrwc;
if (!fIsReentrant)
{
if (id != upgradeLockOwnerId)
{
//You have to be holding the upgrade lock to make this call.
throw new SynchronizationLockException(SR.GetString(SR.SynchronizationLockException_MisMatchedUpgrade));
}
EnterMyLock();
}
else
{
EnterMyLock();
lrwc = GetThreadRWCount(id, true);
if (lrwc == null)
{
ExitMyLock();
throw new SynchronizationLockException(SR.GetString(SR.SynchronizationLockException_MisMatchedUpgrade));
}
RecursiveCounts rc = lrwc.rc;
if (rc.upgradecount < 1)
{
ExitMyLock();
throw new SynchronizationLockException(SR.GetString(SR.SynchronizationLockException_MisMatchedUpgrade));
}
rc.upgradecount--;
if (rc.upgradecount > 0)
{
ExitMyLock();
Thread.EndCriticalRegion();
return;
}
fUpgradeThreadHoldingRead = false;
}
owners--;
upgradeLockOwnerId = -1;
ExitAndWakeUpAppropriateWaiters();
Thread.EndCriticalRegion();
}
public void ExitUpgradeableReadLock()
{
int managedThreadId = Thread.CurrentThread.ManagedThreadId;
if (!this.fIsReentrant)
{
if (managedThreadId != this.upgradeLockOwnerId)
{
throw new SynchronizationLockException(System.SR.GetString("SynchronizationLockException_MisMatchedUpgrade"));
}
this.EnterMyLock();
}
else
{
this.EnterMyLock();
ReaderWriterCount threadRWCount = this.GetThreadRWCount(managedThreadId, true);
if (threadRWCount == null)
{
this.ExitMyLock();
throw new SynchronizationLockException(System.SR.GetString("SynchronizationLockException_MisMatchedUpgrade"));
}
RecursiveCounts rc = threadRWCount.rc;
if (rc.upgradecount < 1)
{
this.ExitMyLock();
throw new SynchronizationLockException(System.SR.GetString("SynchronizationLockException_MisMatchedUpgrade"));
}
rc.upgradecount--;
if (rc.upgradecount > 0)
{
this.ExitMyLock();
Thread.EndCriticalRegion();
return;
}
this.fUpgradeThreadHoldingRead = false;
}
this.owners--;
this.upgradeLockOwnerId = -1;
this.ExitAndWakeUpAppropriateWaiters();
Thread.EndCriticalRegion();
}
public void ExitWriteLock()
{
int managedThreadId = Thread.CurrentThread.ManagedThreadId;
if (!this.fIsReentrant)
{
if (managedThreadId != this.writeLockOwnerId)
{
throw new SynchronizationLockException(System.SR.GetString("SynchronizationLockException_MisMatchedWrite"));
}
this.EnterMyLock();
}
else
{
this.EnterMyLock();
ReaderWriterCount threadRWCount = this.GetThreadRWCount(managedThreadId, false);
if (threadRWCount == null)
{
this.ExitMyLock();
throw new SynchronizationLockException(System.SR.GetString("SynchronizationLockException_MisMatchedWrite"));
}
RecursiveCounts rc = threadRWCount.rc;
if (rc.writercount < 1)
{
this.ExitMyLock();
throw new SynchronizationLockException(System.SR.GetString("SynchronizationLockException_MisMatchedWrite"));
}
rc.writercount--;
if (rc.writercount > 0)
{
this.ExitMyLock();
Thread.EndCriticalRegion();
return;
}
}
this.ClearWriterAcquired();
this.writeLockOwnerId = -1;
this.ExitAndWakeUpAppropriateWaiters();
Thread.EndCriticalRegion();
}
public ReaderWriterCount(bool isReentrant)
{
ThreadId = -1;
if (isReentrant)
Rc = new RecursiveCounts();
}
