private static unsafe void ThreadStub(int threadIndex)
{
Transitions.ThreadStart();
GC.ThreadStartNotification(threadIndex);
Thread currentThread = threadTable[threadIndex];
if (AddThread(threadIndex))
{
// Log Thread Start.
Tracing.Log(Tracing.Audit, "ThreadStub(atid={0}) Entered",
(UIntPtr) unchecked ((uint)threadIndex));
ThreadStart startFun = currentThread.threadStart;
try {
startFun();
}
catch (Exception uncaughtException) {
// Save Uncaught Exception in Thread instance.
currentThread.lastUncaughtException = uncaughtException;
// Dump (possibly nested) Exceptions to the Debugger.
// Note: The first line identifies the outer exception,
// later lines identify the inner exceptions nesting level.
string formatString;
uint nestingLevel = 0;
Exception currentException = uncaughtException;
formatString = "Thread{0,3} Outer" +
" Exception: Type '{2}', Message '{3}'.";
while (currentException != null)
{
DebugStub.WriteLine(
formatString,
__arglist(threadIndex,
nestingLevel,
currentException.GetType().ToString(),
currentException.Message));
currentException = currentException.InnerException;
formatString = "Thread{0,3} Inner{1,2}" +
" Exception: Type '{2}', Message '{3}'.";
if (++nestingLevel > 16)
{
break;
}
}
// Assert (always asserts as exception is never null here).
string message = uncaughtException.Message;
if (message == null)
{
message = String.Empty;
}
VTable.Assert(uncaughtException == null,
"Thread " + threadIndex +
" failed with Exception Type '" +
uncaughtException.GetType().ToString() +
"', Message '" + message + "'.");
}
// Log Thread Exit.
Tracing.Log(Tracing.Audit, "ThreadStub(atid={0}) Exiting",
(UIntPtr) unchecked ((uint)threadIndex));
}
currentThread.joinEvent.Set();
RemoveThread(threadIndex);
GC.DeadThreadNotification(currentThread);
bool disabled = Processor.DisableLocalPreemption();
// REVIEW: this is a dangerous locking strategy as the transition code
// may decide it needs to wake up another thread.
Thread.threadTableLock.Acquire(currentThread);
try {
Transitions.ThreadEnd(threadIndex);
// You may not do any calls out of proc after this point!
threadTable[threadIndex] = null;
Transitions.DeadThreadNotification(threadIndex);
}
finally {
Thread.threadTableLock.Release(currentThread);
Processor.RestoreLocalPreemption(disabled);
}
}