// getCurrent
/// Gets the current log client from the top of the setack
///////////////////////////////////////////////////
public static LogClient getCurrent()
{ //Enter lock
m_threadlock.AcquireReaderLock(Timeout.Infinite);
//Get the current logclient
logstack clientstack = null;
int threadid = Thread.CurrentThread.ManagedThreadId;
try
{ //The list may be modified, so we want to remain in sync
if (!m_threads.TryGetValue(threadid, out clientstack))
{ //Failed to find anything related to the thread
//Let's assume that the stack just hasn't been created
return(null);
}
//Take a look
if (clientstack.Count == 0)
{
return(null);
}
return(clientstack.Peek());
}
finally
{ //Release again
m_threadlock.ReleaseReaderLock();
}
}
internal static void write(TLog type, string Message, Thread thread, bool bCautious)
{ //Get a reader lock
m_threadlock.AcquireReaderLock(Timeout.Infinite);
//We need to release the sync object afterwards
LogClient client = null;
try
{ //Get the current logclient
logstack clientstack = null;
int threadid = thread.ManagedThreadId;
//The list may be modified, so we want to remain in sync
if (!m_threads.TryGetValue(threadid, out clientstack))
{ //Failed to find it; make a note
lock (m_warning)
{
m_warning.WriteLine("[" + DateTime.Now.ToLongTimeString() + "][Log] Failed to find associated clientstack for thread. (write)");
m_warning.WriteLine("[" + DateTime.Now.ToLongTimeString() + "][Log] Message: " + Message);
m_warning.Flush();
}
return;
}
//If we don't have any logclients, don't bother
if (clientstack.Count == 0)
{ //Notify them
lock (m_warning)
{
m_warning.WriteLine("[" + DateTime.Now.ToLongTimeString() + "][Log] Attempted to write to log when no LogClients were active.");
m_warning.Flush();
}
return;
}
//Got it!
client = clientstack.Peek();
}
finally
{ //Release our lock
m_threadlock.ReleaseReaderLock();
}
//Redirect
write(type, Message, client, bCautious);
}
internal static void yield(LogClient client, Thread thread, bool bCautious, long sync)
{ //Validate the logclient
if (client == null)
{ //Wtf?
lock (m_error)
{
m_error.WriteLine("[" + DateTime.Now.ToLongTimeString() + "][Log] Attempted to yield null LogClient. (yield)");
m_error.Flush();
}
return;
}
//Ignore fake clients
if (client.m_bFake)
{
return;
}
//Enter the lock to access the threads list
logstack clientstack = null;
int threadid = thread.ManagedThreadId;
m_threadlock.AcquireReaderLock(Timeout.Infinite);
try
{ //Find our associated client stack
if (!m_threads.TryGetValue(threadid, out clientstack))
{ //Failed to find it; let's create a new one
LockCookie lc = new LockCookie();
lc = m_threadlock.UpgradeToWriterLock(Timeout.Infinite);
try
{
clientstack = new logstack();
//Add it to the list
m_threads.Add(threadid, clientstack);
}
finally
{
m_threadlock.DowngradeFromWriterLock(ref lc);
}
}
}
finally
{
m_threadlock.ReleaseReaderLock();
}
//Set our sync id
if (sync == -1)
{
sync = Interlocked.Increment(ref clientstack.m_runningsync);
}
//Attempt to hold the sync object
bool bSync = true;
if (bCautious)
{
bSync = DdMonitor.TryEnter(clientstack);
}
else
{
DdMonitor.Enter(clientstack);
}
//If this would block, queue the request in the threadpool
if (!bSync)
{ //Queue!
ThreadPool.QueueUserWorkItem(
delegate(object state)
{ //Reattempt the assume
yield(client, thread, false, sync);
}
);
//Done
return;
}
//We need to release the sync object afterwards
try
{ //Wait on our sync
if (!DdMonitor.bNoSync)
{
while (sync - 1 != Interlocked.Read(ref clientstack.m_actualsync))
{
Monitor.Wait(clientstack);
}
}
//Make sure the specified client holds the stack
LogClient stackowner = clientstack.Peek();
if (stackowner.m_guid != client.m_guid)
{ //You can't yield if you don't own the stack
//Report the error and do nothing
lock (m_warning)
{
m_warning.WriteLine("[" + DateTime.Now.ToLongTimeString() + "][Log] Client attempted to yield in a thread whose logging context it didn't own.");
m_warning.Flush();
}
return;
}
//Remove the client from the stack
clientstack.Pop();
//If the stack has nothing left..
if (clientstack.Count == 0)
{ //Remove it from the thread list
m_threadlock.AcquireWriterLock(Timeout.Infinite);
try
{
m_threads.Remove(threadid);
}
finally
{
m_threadlock.ReleaseWriterLock();
}
}
//Increase the count
Interlocked.Exchange(ref clientstack.m_actualsync, sync);
//Done
if (!DdMonitor.bNoSync)
{
Monitor.Pulse(clientstack);
}
}
finally
{
DdMonitor.Exit(clientstack);
}
}
internal static void assume(LogClient client, Thread thread, bool bCautious, long sync)
{ //Validate the logclient
if (client == null)
{ //Wtf?
lock (m_error)
{
m_error.WriteLine("[" + DateTime.Now.ToLongTimeString() + "][Log] Attempted to add null LogClient. (assume)");
m_error.Flush();
}
return;
}
//Ignore fake clients
if (client.m_bFake)
{
return;
}
//Enter the lock to access the threads list
logstack clientstack = null;
m_threadlock.AcquireReaderLock(Timeout.Infinite);
try
{ //Find our associated client stack
int threadid = thread.ManagedThreadId;
//We're modifying the list, so we need to be synced
if (!m_threads.TryGetValue(threadid, out clientstack))
{ //Failed to find it; let's create a new one
LockCookie lc = new LockCookie();
lc = m_threadlock.UpgradeToWriterLock(Timeout.Infinite);
try
{
clientstack = new logstack();
//Add it to the list
m_threads.Add(threadid, clientstack);
}
finally
{
m_threadlock.DowngradeFromWriterLock(ref lc);
}
}
}
finally
{
m_threadlock.ReleaseReaderLock();
}
//Set our sync id
if (sync == -1)
{
sync = Interlocked.Increment(ref clientstack.m_runningsync);
}
//Attempt to hold the sync object
bool bSync = true;
if (bCautious)
{
bSync = DdMonitor.TryEnter(clientstack);
}
else
{
DdMonitor.Enter(clientstack);
}
//If this would block, queue the request in the threadpool
if (!bSync)
{ //Queue!
ThreadPool.QueueUserWorkItem(
delegate(object state)
{ //Reattempt the assume
assume(client, thread, false, sync);
}
);
//Done
return;
}
//We need to release the sync object afterwards
try
{ //Wait on our sync
if (!DdMonitor.bNoSync)
{
while (sync - 1 != Interlocked.Read(ref clientstack.m_actualsync))
{
Monitor.Wait(clientstack);
}
}
//Add our client
clientstack.Push(client);
//Increase the count
Interlocked.Exchange(ref clientstack.m_actualsync, sync);
//Done.
if (!DdMonitor.bNoSync)
{
Monitor.Pulse(clientstack);
}
}
finally
{
DdMonitor.Exit(clientstack);
}
}
